/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 01:31:21,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 01:31:21,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 01:31:21,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 01:31:21,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 01:31:21,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 01:31:21,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 01:31:21,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 01:31:21,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 01:31:21,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 01:31:21,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 01:31:21,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 01:31:21,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 01:31:21,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 01:31:21,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 01:31:21,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 01:31:21,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 01:31:21,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 01:31:21,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 01:31:21,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 01:31:21,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 01:31:21,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 01:31:21,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 01:31:21,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 01:31:21,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 01:31:21,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 01:31:21,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 01:31:21,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 01:31:21,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 01:31:21,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 01:31:21,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 01:31:21,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 01:31:21,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 01:31:21,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 01:31:21,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 01:31:21,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 01:31:21,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 01:31:21,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 01:31:21,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 01:31:21,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 01:31:21,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 01:31:21,631 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-RepeatedSemanticLbe.epf [2022-12-13 01:31:21,658 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 01:31:21,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 01:31:21,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 01:31:21,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 01:31:21,660 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 01:31:21,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 01:31:21,661 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 01:31:21,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 01:31:21,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 01:31:21,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 01:31:21,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 01:31:21,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 01:31:21,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 01:31:21,662 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 01:31:21,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 01:31:21,662 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 01:31:21,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 01:31:21,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 01:31:21,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 01:31:21,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 01:31:21,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 01:31:21,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 01:31:21,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 01:31:21,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 01:31:21,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 01:31:21,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 01:31:21,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 01:31:21,664 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 01:31:21,664 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 01:31:21,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 01:31:21,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 01:31:21,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 01:31:21,953 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 01:31:21,954 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 01:31:21,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2022-12-13 01:31:23,020 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 01:31:23,225 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 01:31:23,225 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2022-12-13 01:31:23,231 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71f298341/5ffe425a458041ce9462b5d161c7cafd/FLAG3efd306db [2022-12-13 01:31:23,245 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71f298341/5ffe425a458041ce9462b5d161c7cafd [2022-12-13 01:31:23,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 01:31:23,248 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 01:31:23,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 01:31:23,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 01:31:23,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 01:31:23,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:31:23" (1/1) ... [2022-12-13 01:31:23,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b09fb73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:31:23, skipping insertion in model container [2022-12-13 01:31:23,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:31:23" (1/1) ... [2022-12-13 01:31:23,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 01:31:23,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 01:31:23,440 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-12-13 01:31:23,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 01:31:23,454 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 01:31:23,487 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-12-13 01:31:23,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 01:31:23,505 INFO L208 MainTranslator]: Completed translation [2022-12-13 01:31:23,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:31:23 WrapperNode [2022-12-13 01:31:23,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 01:31:23,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 01:31:23,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 01:31:23,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 01:31:23,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:31:23" (1/1) ... [2022-12-13 01:31:23,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:31:23" (1/1) ... [2022-12-13 01:31:23,588 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 388 [2022-12-13 01:31:23,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 01:31:23,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 01:31:23,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 01:31:23,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 01:31:23,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:31:23" (1/1) ... [2022-12-13 01:31:23,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:31:23" (1/1) ... [2022-12-13 01:31:23,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:31:23" (1/1) ... [2022-12-13 01:31:23,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:31:23" (1/1) ... [2022-12-13 01:31:23,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:31:23" (1/1) ... [2022-12-13 01:31:23,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:31:23" (1/1) ... [2022-12-13 01:31:23,630 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:31:23" (1/1) ... [2022-12-13 01:31:23,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:31:23" (1/1) ... [2022-12-13 01:31:23,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 01:31:23,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 01:31:23,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 01:31:23,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 01:31:23,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:31:23" (1/1) ... [2022-12-13 01:31:23,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 01:31:23,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 01:31:23,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 01:31:23,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 01:31:23,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 01:31:23,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 01:31:23,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 01:31:23,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 01:31:23,748 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 01:31:23,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 01:31:23,748 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 01:31:23,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 01:31:23,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 01:31:23,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 01:31:23,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 01:31:23,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 01:31:23,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 01:31:23,753 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 01:31:23,829 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 01:31:23,831 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 01:31:24,244 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 01:31:24,252 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 01:31:24,253 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 01:31:24,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:31:24 BoogieIcfgContainer [2022-12-13 01:31:24,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 01:31:24,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 01:31:24,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 01:31:24,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 01:31:24,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:31:23" (1/3) ... [2022-12-13 01:31:24,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b115a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:31:24, skipping insertion in model container [2022-12-13 01:31:24,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:31:23" (2/3) ... [2022-12-13 01:31:24,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b115a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:31:24, skipping insertion in model container [2022-12-13 01:31:24,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:31:24" (3/3) ... [2022-12-13 01:31:24,264 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2022-12-13 01:31:24,277 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 01:31:24,277 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 01:31:24,277 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 01:31:24,408 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 01:31:24,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 467 transitions, 950 flow [2022-12-13 01:31:24,600 INFO L130 PetriNetUnfolder]: 49/465 cut-off events. [2022-12-13 01:31:24,601 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 01:31:24,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 465 events. 49/465 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1352 event pairs, 0 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 319. Up to 2 conditions per place. [2022-12-13 01:31:24,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 425 places, 467 transitions, 950 flow [2022-12-13 01:31:24,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 415 places, 457 transitions, 926 flow [2022-12-13 01:31:24,626 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:31:24,641 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 415 places, 457 transitions, 926 flow [2022-12-13 01:31:24,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 415 places, 457 transitions, 926 flow [2022-12-13 01:31:24,718 INFO L130 PetriNetUnfolder]: 49/457 cut-off events. [2022-12-13 01:31:24,718 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 01:31:24,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 457 events. 49/457 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1332 event pairs, 0 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 319. Up to 2 conditions per place. [2022-12-13 01:31:24,743 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 415 places, 457 transitions, 926 flow [2022-12-13 01:31:24,743 INFO L226 LiptonReduction]: Number of co-enabled transitions 52052 [2022-12-13 01:31:41,532 INFO L241 LiptonReduction]: Total number of compositions: 428 [2022-12-13 01:31:41,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 01:31:41,547 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=REPEATED_LIPTON_PN, 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;@36bdb324, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 01:31:41,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 01:31:41,552 INFO L130 PetriNetUnfolder]: 7/28 cut-off events. [2022-12-13 01:31:41,552 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 01:31:41,552 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 01:31:41,552 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 01:31:41,552 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 01:31:41,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 01:31:41,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1337779771, now seen corresponding path program 1 times [2022-12-13 01:31:41,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 01:31:41,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117476411] [2022-12-13 01:31:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:31:41,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 01:31:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:31:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 01:31:41,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 01:31:41,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117476411] [2022-12-13 01:31:41,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117476411] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 01:31:41,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 01:31:41,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 01:31:41,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366230044] [2022-12-13 01:31:41,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 01:31:41,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 01:31:41,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 01:31:41,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 01:31:41,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 01:31:41,866 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-13 01:31:41,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:31:41,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 01:31:41,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-13 01:31:41,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 01:31:41,966 INFO L130 PetriNetUnfolder]: 157/250 cut-off events. [2022-12-13 01:31:41,966 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-12-13 01:31:41,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 250 events. 157/250 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 639 event pairs, 87 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 472. Up to 249 conditions per place. [2022-12-13 01:31:41,969 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2022-12-13 01:31:41,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 136 flow [2022-12-13 01:31:41,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 01:31:41,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 01:31:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2022-12-13 01:31:41,979 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2022-12-13 01:31:41,980 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 70 flow. Second operand 3 states and 33 transitions. [2022-12-13 01:31:41,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 136 flow [2022-12-13 01:31:41,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 01:31:41,984 INFO L231 Difference]: Finished difference. Result has 28 places, 31 transitions, 84 flow [2022-12-13 01:31:41,986 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=28, PETRI_TRANSITIONS=31} [2022-12-13 01:31:41,990 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2022-12-13 01:31:41,990 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 01:31:41,990 INFO L89 Accepts]: Start accepts. Operand has 28 places, 31 transitions, 84 flow [2022-12-13 01:31:41,992 INFO L95 Accepts]: Finished accepts. [2022-12-13 01:31:41,992 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:31:41,993 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 31 transitions, 84 flow [2022-12-13 01:31:42,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 31 transitions, 84 flow [2022-12-13 01:31:42,005 INFO L130 PetriNetUnfolder]: 7/31 cut-off events. [2022-12-13 01:31:42,005 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 01:31:42,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 31 events. 7/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 30. Up to 6 conditions per place. [2022-12-13 01:31:42,007 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 31 transitions, 84 flow [2022-12-13 01:31:42,007 INFO L226 LiptonReduction]: Number of co-enabled transitions 192 [2022-12-13 01:31:42,052 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 01:31:42,055 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 65 [2022-12-13 01:31:42,055 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 31 transitions, 84 flow [2022-12-13 01:31:42,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:31:42,055 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 01:31:42,055 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 01:31:42,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 01:31:42,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 01:31:42,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 01:31:42,059 INFO L85 PathProgramCache]: Analyzing trace with hash -685768648, now seen corresponding path program 1 times [2022-12-13 01:31:42,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 01:31:42,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570957127] [2022-12-13 01:31:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:31:42,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 01:31:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:31:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 01:31:42,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 01:31:42,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570957127] [2022-12-13 01:31:42,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570957127] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 01:31:42,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833098235] [2022-12-13 01:31:42,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:31:42,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 01:31:42,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 01:31:42,190 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 01:31:42,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 01:31:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:31:42,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 01:31:42,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 01:31:42,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 01:31:42,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 01:31:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 01:31:42,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833098235] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 01:31:42,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 01:31:42,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-12-13 01:31:42,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626136222] [2022-12-13 01:31:42,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 01:31:42,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 01:31:42,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 01:31:42,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 01:31:42,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-13 01:31:42,378 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-13 01:31:42,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 31 transitions, 84 flow. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:31:42,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 01:31:42,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-13 01:31:42,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 01:31:42,499 INFO L130 PetriNetUnfolder]: 157/256 cut-off events. [2022-12-13 01:31:42,500 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 01:31:42,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 256 events. 157/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 642 event pairs, 87 based on Foata normal form. 3/190 useless extension candidates. Maximal degree in co-relation 512. Up to 249 conditions per place. [2022-12-13 01:31:42,501 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 10 changer transitions 0/37 dead transitions. [2022-12-13 01:31:42,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 182 flow [2022-12-13 01:31:42,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 01:31:42,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 01:31:42,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 43 transitions. [2022-12-13 01:31:42,502 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2471264367816092 [2022-12-13 01:31:42,502 INFO L175 Difference]: Start difference. First operand has 28 places, 31 transitions, 84 flow. Second operand 6 states and 43 transitions. [2022-12-13 01:31:42,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 182 flow [2022-12-13 01:31:42,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 01:31:42,503 INFO L231 Difference]: Finished difference. Result has 35 places, 37 transitions, 146 flow [2022-12-13 01:31:42,504 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=35, PETRI_TRANSITIONS=37} [2022-12-13 01:31:42,504 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2022-12-13 01:31:42,504 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 01:31:42,504 INFO L89 Accepts]: Start accepts. Operand has 35 places, 37 transitions, 146 flow [2022-12-13 01:31:42,519 INFO L95 Accepts]: Finished accepts. [2022-12-13 01:31:42,519 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:31:42,519 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 37 transitions, 146 flow [2022-12-13 01:31:42,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 37 transitions, 146 flow [2022-12-13 01:31:42,524 INFO L130 PetriNetUnfolder]: 7/37 cut-off events. [2022-12-13 01:31:42,524 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 01:31:42,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 37 events. 7/37 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 31. Up to 12 conditions per place. [2022-12-13 01:31:42,525 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 37 transitions, 146 flow [2022-12-13 01:31:42,525 INFO L226 LiptonReduction]: Number of co-enabled transitions 192 [2022-12-13 01:31:42,526 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 01:31:42,526 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 22 [2022-12-13 01:31:42,526 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 37 transitions, 146 flow [2022-12-13 01:31:42,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:31:42,527 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 01:31:42,527 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 01:31:42,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-13 01:31:42,734 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 [2022-12-13 01:31:42,734 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 01:31:42,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 01:31:42,735 INFO L85 PathProgramCache]: Analyzing trace with hash 154811961, now seen corresponding path program 2 times [2022-12-13 01:31:42,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 01:31:42,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242017656] [2022-12-13 01:31:42,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:31:42,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 01:31:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:31:42,875 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 01:31:42,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 01:31:42,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242017656] [2022-12-13 01:31:42,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242017656] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 01:31:42,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985252238] [2022-12-13 01:31:42,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 01:31:42,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 01:31:42,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 01:31:42,893 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 01:31:42,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 01:31:42,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 01:31:42,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 01:31:42,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 01:31:42,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 01:31:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 01:31:43,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 01:31:43,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985252238] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 01:31:43,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 01:31:43,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2022-12-13 01:31:43,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070567255] [2022-12-13 01:31:43,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 01:31:43,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 01:31:43,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 01:31:43,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 01:31:43,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-13 01:31:43,321 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-13 01:31:43,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 146 flow. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:31:43,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 01:31:43,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-13 01:31:43,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 01:31:43,584 INFO L130 PetriNetUnfolder]: 165/285 cut-off events. [2022-12-13 01:31:43,584 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 01:31:43,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 285 events. 165/285 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 854 event pairs, 87 based on Foata normal form. 1/213 useless extension candidates. Maximal degree in co-relation 562. Up to 249 conditions per place. [2022-12-13 01:31:43,586 INFO L137 encePairwiseOnDemand]: 25/29 looper letters, 43 selfloop transitions, 1 changer transitions 7/51 dead transitions. [2022-12-13 01:31:43,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 281 flow [2022-12-13 01:31:43,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 01:31:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 01:31:43,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2022-12-13 01:31:43,588 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3879310344827586 [2022-12-13 01:31:43,588 INFO L175 Difference]: Start difference. First operand has 35 places, 37 transitions, 146 flow. Second operand 4 states and 45 transitions. [2022-12-13 01:31:43,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 281 flow [2022-12-13 01:31:43,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 265 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 01:31:43,590 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 139 flow [2022-12-13 01:31:43,590 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2022-12-13 01:31:43,591 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2022-12-13 01:31:43,591 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 01:31:43,591 INFO L89 Accepts]: Start accepts. Operand has 39 places, 37 transitions, 139 flow [2022-12-13 01:31:43,593 INFO L95 Accepts]: Finished accepts. [2022-12-13 01:31:43,593 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:31:43,593 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 37 transitions, 139 flow [2022-12-13 01:31:43,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 37 transitions, 139 flow [2022-12-13 01:31:43,599 INFO L130 PetriNetUnfolder]: 6/47 cut-off events. [2022-12-13 01:31:43,599 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 01:31:43,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 47 events. 6/47 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 95 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 78. Up to 6 conditions per place. [2022-12-13 01:31:43,599 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 37 transitions, 139 flow [2022-12-13 01:31:43,599 INFO L226 LiptonReduction]: Number of co-enabled transitions 188 [2022-12-13 01:31:43,600 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 01:31:43,601 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 10 [2022-12-13 01:31:43,601 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 139 flow [2022-12-13 01:31:43,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:31:43,602 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 01:31:43,602 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 01:31:43,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 01:31:43,806 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 [2022-12-13 01:31:43,807 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 01:31:43,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 01:31:43,807 INFO L85 PathProgramCache]: Analyzing trace with hash 672446397, now seen corresponding path program 3 times [2022-12-13 01:31:43,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 01:31:43,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476124666] [2022-12-13 01:31:43,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:31:43,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 01:31:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:31:43,926 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 01:31:43,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 01:31:43,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476124666] [2022-12-13 01:31:43,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476124666] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 01:31:43,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416789912] [2022-12-13 01:31:43,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 01:31:43,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 01:31:43,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 01:31:43,933 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 01:31:43,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 01:31:44,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 01:31:44,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 01:31:44,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 01:31:44,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 01:31:44,297 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 01:31:44,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 01:31:44,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416789912] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 01:31:44,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 01:31:44,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2022-12-13 01:31:44,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749337098] [2022-12-13 01:31:44,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 01:31:44,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 01:31:44,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 01:31:44,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 01:31:44,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-13 01:31:44,300 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-13 01:31:44,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 139 flow. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:31:44,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 01:31:44,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-13 01:31:44,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 01:31:44,530 INFO L130 PetriNetUnfolder]: 173/317 cut-off events. [2022-12-13 01:31:44,530 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-12-13 01:31:44,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 317 events. 173/317 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1082 event pairs, 96 based on Foata normal form. 3/251 useless extension candidates. Maximal degree in co-relation 720. Up to 256 conditions per place. [2022-12-13 01:31:44,531 INFO L137 encePairwiseOnDemand]: 25/29 looper letters, 51 selfloop transitions, 1 changer transitions 5/57 dead transitions. [2022-12-13 01:31:44,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 302 flow [2022-12-13 01:31:44,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 01:31:44,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 01:31:44,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 51 transitions. [2022-12-13 01:31:44,532 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4396551724137931 [2022-12-13 01:31:44,532 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 139 flow. Second operand 4 states and 51 transitions. [2022-12-13 01:31:44,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 302 flow [2022-12-13 01:31:44,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 296 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 01:31:44,534 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 145 flow [2022-12-13 01:31:44,534 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2022-12-13 01:31:44,535 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2022-12-13 01:31:44,535 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 01:31:44,535 INFO L89 Accepts]: Start accepts. Operand has 41 places, 37 transitions, 145 flow [2022-12-13 01:31:44,535 INFO L95 Accepts]: Finished accepts. [2022-12-13 01:31:44,535 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:31:44,535 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 37 transitions, 145 flow [2022-12-13 01:31:44,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions, 145 flow [2022-12-13 01:31:44,540 INFO L130 PetriNetUnfolder]: 5/47 cut-off events. [2022-12-13 01:31:44,540 INFO L131 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2022-12-13 01:31:44,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 47 events. 5/47 cut-off events. For 11/13 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 89 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 82. Up to 6 conditions per place. [2022-12-13 01:31:44,541 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 37 transitions, 145 flow [2022-12-13 01:31:44,541 INFO L226 LiptonReduction]: Number of co-enabled transitions 186 [2022-12-13 01:31:44,541 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 01:31:44,542 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 7 [2022-12-13 01:31:44,542 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 145 flow [2022-12-13 01:31:44,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:31:44,542 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 01:31:44,542 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 01:31:44,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 01:31:44,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 01:31:44,747 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 01:31:44,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 01:31:44,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1666563630, now seen corresponding path program 1 times [2022-12-13 01:31:44,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 01:31:44,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928306069] [2022-12-13 01:31:44,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:31:44,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 01:31:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:31:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 01:31:44,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 01:31:44,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928306069] [2022-12-13 01:31:44,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928306069] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 01:31:44,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545434823] [2022-12-13 01:31:44,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:31:44,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 01:31:44,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 01:31:44,868 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 01:31:44,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 01:31:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:31:44,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 01:31:44,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 01:31:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 01:31:45,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 01:31:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 01:31:45,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545434823] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 01:31:45,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 01:31:45,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-12-13 01:31:45,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923414198] [2022-12-13 01:31:45,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 01:31:45,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 01:31:45,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 01:31:45,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 01:31:45,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-12-13 01:31:45,087 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-13 01:31:45,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 145 flow. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:31:45,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 01:31:45,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-13 01:31:45,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 01:31:45,205 INFO L130 PetriNetUnfolder]: 172/313 cut-off events. [2022-12-13 01:31:45,206 INFO L131 PetriNetUnfolder]: For 181/181 co-relation queries the response was YES. [2022-12-13 01:31:45,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 313 events. 172/313 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1004 event pairs, 124 based on Foata normal form. 1/267 useless extension candidates. Maximal degree in co-relation 752. Up to 304 conditions per place. [2022-12-13 01:31:45,207 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 12 changer transitions 0/39 dead transitions. [2022-12-13 01:31:45,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 235 flow [2022-12-13 01:31:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 01:31:45,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 01:31:45,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 41 transitions. [2022-12-13 01:31:45,208 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2019704433497537 [2022-12-13 01:31:45,208 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 145 flow. Second operand 7 states and 41 transitions. [2022-12-13 01:31:45,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 235 flow [2022-12-13 01:31:45,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 232 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 01:31:45,210 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 188 flow [2022-12-13 01:31:45,210 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2022-12-13 01:31:45,210 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2022-12-13 01:31:45,210 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 01:31:45,210 INFO L89 Accepts]: Start accepts. Operand has 45 places, 39 transitions, 188 flow [2022-12-13 01:31:45,224 INFO L95 Accepts]: Finished accepts. [2022-12-13 01:31:45,224 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:31:45,224 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 39 transitions, 188 flow [2022-12-13 01:31:45,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 39 transitions, 188 flow [2022-12-13 01:31:45,230 INFO L130 PetriNetUnfolder]: 5/49 cut-off events. [2022-12-13 01:31:45,230 INFO L131 PetriNetUnfolder]: For 7/9 co-relation queries the response was YES. [2022-12-13 01:31:45,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 49 events. 5/49 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 89 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 82. Up to 8 conditions per place. [2022-12-13 01:31:45,230 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 39 transitions, 188 flow [2022-12-13 01:31:45,230 INFO L226 LiptonReduction]: Number of co-enabled transitions 186 [2022-12-13 01:31:45,231 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 01:31:45,231 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 21 [2022-12-13 01:31:45,231 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 188 flow [2022-12-13 01:31:45,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:31:45,231 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 01:31:45,232 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 01:31:45,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 01:31:45,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 01:31:45,438 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 01:31:45,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 01:31:45,439 INFO L85 PathProgramCache]: Analyzing trace with hash -508501901, now seen corresponding path program 2 times [2022-12-13 01:31:45,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 01:31:45,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069535456] [2022-12-13 01:31:45,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:31:45,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 01:31:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:31:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 01:31:45,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 01:31:45,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069535456] [2022-12-13 01:31:45,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069535456] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 01:31:45,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 01:31:45,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 01:31:45,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615964315] [2022-12-13 01:31:45,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 01:31:45,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 01:31:45,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 01:31:45,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 01:31:45,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 01:31:45,535 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-13 01:31:45,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:31:45,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 01:31:45,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-13 01:31:45,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 01:31:45,662 INFO L130 PetriNetUnfolder]: 211/378 cut-off events. [2022-12-13 01:31:45,662 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-12-13 01:31:45,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 378 events. 211/378 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1314 event pairs, 124 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 846. Up to 318 conditions per place. [2022-12-13 01:31:45,664 INFO L137 encePairwiseOnDemand]: 26/29 looper letters, 53 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2022-12-13 01:31:45,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 337 flow [2022-12-13 01:31:45,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 01:31:45,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 01:31:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2022-12-13 01:31:45,665 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2022-12-13 01:31:45,665 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 188 flow. Second operand 3 states and 46 transitions. [2022-12-13 01:31:45,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 337 flow [2022-12-13 01:31:45,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 313 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-12-13 01:31:45,666 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 176 flow [2022-12-13 01:31:45,666 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2022-12-13 01:31:45,667 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2022-12-13 01:31:45,667 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 01:31:45,667 INFO L89 Accepts]: Start accepts. Operand has 44 places, 40 transitions, 176 flow [2022-12-13 01:31:45,668 INFO L95 Accepts]: Finished accepts. [2022-12-13 01:31:45,668 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:31:45,668 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 40 transitions, 176 flow [2022-12-13 01:31:45,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 40 transitions, 176 flow [2022-12-13 01:31:45,673 INFO L130 PetriNetUnfolder]: 5/50 cut-off events. [2022-12-13 01:31:45,674 INFO L131 PetriNetUnfolder]: For 16/18 co-relation queries the response was YES. [2022-12-13 01:31:45,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 50 events. 5/50 cut-off events. For 16/18 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 96 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 83. Up to 7 conditions per place. [2022-12-13 01:31:45,674 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 40 transitions, 176 flow [2022-12-13 01:31:45,674 INFO L226 LiptonReduction]: Number of co-enabled transitions 216 [2022-12-13 01:31:47,490 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 01:31:47,491 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1824 [2022-12-13 01:31:47,491 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 172 flow [2022-12-13 01:31:47,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:31:47,491 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 01:31:47,491 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 01:31:47,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 01:31:47,492 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 01:31:47,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 01:31:47,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1343580082, now seen corresponding path program 1 times [2022-12-13 01:31:47,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 01:31:47,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930883572] [2022-12-13 01:31:47,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:31:47,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 01:31:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:31:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 01:31:47,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 01:31:47,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930883572] [2022-12-13 01:31:47,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930883572] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 01:31:47,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 01:31:47,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 01:31:47,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670672991] [2022-12-13 01:31:47,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 01:31:47,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 01:31:47,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 01:31:47,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 01:31:47,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 01:31:47,622 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-13 01:31:47,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:31:47,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 01:31:47,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-13 01:31:47,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 01:31:47,728 INFO L130 PetriNetUnfolder]: 266/467 cut-off events. [2022-12-13 01:31:47,728 INFO L131 PetriNetUnfolder]: For 354/354 co-relation queries the response was YES. [2022-12-13 01:31:47,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 467 events. 266/467 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1543 event pairs, 132 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 1204. Up to 326 conditions per place. [2022-12-13 01:31:47,730 INFO L137 encePairwiseOnDemand]: 25/29 looper letters, 50 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2022-12-13 01:31:47,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 321 flow [2022-12-13 01:31:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 01:31:47,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 01:31:47,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2022-12-13 01:31:47,731 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2022-12-13 01:31:47,731 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 172 flow. Second operand 3 states and 44 transitions. [2022-12-13 01:31:47,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 321 flow [2022-12-13 01:31:47,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 305 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-13 01:31:47,733 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 183 flow [2022-12-13 01:31:47,733 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2022-12-13 01:31:47,733 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2022-12-13 01:31:47,733 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 01:31:47,734 INFO L89 Accepts]: Start accepts. Operand has 44 places, 41 transitions, 183 flow [2022-12-13 01:31:47,734 INFO L95 Accepts]: Finished accepts. [2022-12-13 01:31:47,734 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:31:47,734 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 41 transitions, 183 flow [2022-12-13 01:31:47,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 41 transitions, 183 flow [2022-12-13 01:31:47,740 INFO L130 PetriNetUnfolder]: 6/56 cut-off events. [2022-12-13 01:31:47,740 INFO L131 PetriNetUnfolder]: For 16/18 co-relation queries the response was YES. [2022-12-13 01:31:47,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 56 events. 6/56 cut-off events. For 16/18 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 85 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 85. Up to 7 conditions per place. [2022-12-13 01:31:47,741 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 41 transitions, 183 flow [2022-12-13 01:31:47,741 INFO L226 LiptonReduction]: Number of co-enabled transitions 214 [2022-12-13 01:31:47,752 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 01:31:47,752 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 19 [2022-12-13 01:31:47,752 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 183 flow [2022-12-13 01:31:47,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:31:47,752 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 01:31:47,752 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 01:31:47,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 01:31:47,753 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 01:31:47,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 01:31:47,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1460399636, now seen corresponding path program 1 times [2022-12-13 01:31:47,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 01:31:47,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966609877] [2022-12-13 01:31:47,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:31:47,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 01:31:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:31:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 01:31:47,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 01:31:47,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966609877] [2022-12-13 01:31:47,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966609877] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 01:31:47,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 01:31:47,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 01:31:47,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759364093] [2022-12-13 01:31:47,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 01:31:47,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 01:31:47,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 01:31:47,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 01:31:47,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 01:31:47,829 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-13 01:31:47,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:31:47,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 01:31:47,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-13 01:31:47,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 01:31:47,951 INFO L130 PetriNetUnfolder]: 205/362 cut-off events. [2022-12-13 01:31:47,951 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2022-12-13 01:31:47,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 908 conditions, 362 events. 205/362 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1069 event pairs, 64 based on Foata normal form. 36/348 useless extension candidates. Maximal degree in co-relation 842. Up to 331 conditions per place. [2022-12-13 01:31:47,953 INFO L137 encePairwiseOnDemand]: 25/29 looper letters, 42 selfloop transitions, 2 changer transitions 4/48 dead transitions. [2022-12-13 01:31:47,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 302 flow [2022-12-13 01:31:47,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 01:31:47,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 01:31:47,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2022-12-13 01:31:47,953 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4367816091954023 [2022-12-13 01:31:47,953 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 183 flow. Second operand 3 states and 38 transitions. [2022-12-13 01:31:47,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 302 flow [2022-12-13 01:31:47,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 01:31:47,955 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 188 flow [2022-12-13 01:31:47,955 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2022-12-13 01:31:47,955 INFO L295 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2022-12-13 01:31:47,955 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 01:31:47,955 INFO L89 Accepts]: Start accepts. Operand has 46 places, 41 transitions, 188 flow [2022-12-13 01:31:47,956 INFO L95 Accepts]: Finished accepts. [2022-12-13 01:31:47,956 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:31:47,956 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 41 transitions, 188 flow [2022-12-13 01:31:47,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 41 transitions, 188 flow [2022-12-13 01:31:47,963 INFO L130 PetriNetUnfolder]: 8/48 cut-off events. [2022-12-13 01:31:47,963 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-12-13 01:31:47,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 48 events. 8/48 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 85. Up to 7 conditions per place. [2022-12-13 01:31:47,963 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 41 transitions, 188 flow [2022-12-13 01:31:47,963 INFO L226 LiptonReduction]: Number of co-enabled transitions 176 [2022-12-13 01:31:47,964 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 01:31:47,964 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 9 [2022-12-13 01:31:47,964 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 188 flow [2022-12-13 01:31:47,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:31:47,964 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 01:31:47,964 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 01:31:47,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 01:31:47,965 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 01:31:47,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 01:31:47,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1898492142, now seen corresponding path program 1 times [2022-12-13 01:31:47,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 01:31:47,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859464716] [2022-12-13 01:31:47,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:31:47,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 01:31:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:31:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 01:31:50,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 01:31:50,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859464716] [2022-12-13 01:31:50,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859464716] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 01:31:50,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84483286] [2022-12-13 01:31:50,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:31:50,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 01:31:50,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 01:31:50,116 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 01:31:50,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 01:31:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:31:50,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 01:31:50,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 01:31:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 01:31:51,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 01:32:03,396 WARN L233 SmtUtils]: Spent 10.19s on a formula simplification. DAG size of input: 60 DAG size of output: 52 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 01:32:04,377 INFO L321 Elim1Store]: treesize reduction 37, result has 92.9 percent of original size [2022-12-13 01:32:04,378 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 131 treesize of output 560 Received shutdown request... [2022-12-13 01:45:31,717 WARN L249 SmtUtils]: Removed 2 from assertion stack [2022-12-13 01:45:31,719 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-13 01:45:31,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 01:45:31,762 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-13 01:45:31,762 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-13 01:45:31,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 01:45:31,920 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNetWithRepeatedLiptonReduction was analyzing trace of length 33 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 0ms.. [2022-12-13 01:45:31,921 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-13 01:45:31,921 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-13 01:45:31,921 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2022-12-13 01:45:31,923 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 01:45:31,923 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 01:45:31,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:45:31 BasicIcfg [2022-12-13 01:45:31,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 01:45:31,925 INFO L158 Benchmark]: Toolchain (without parser) took 848676.75ms. Allocated memory was 191.9MB in the beginning and 934.3MB in the end (delta: 742.4MB). Free memory was 168.7MB in the beginning and 574.0MB in the end (delta: -405.3MB). Peak memory consumption was 602.8MB. Max. memory is 8.0GB. [2022-12-13 01:45:31,925 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 191.9MB. Free memory was 168.3MB in the beginning and 168.3MB in the end (delta: 57.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-13 01:45:31,925 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.85ms. Allocated memory is still 191.9MB. Free memory was 168.6MB in the beginning and 155.0MB in the end (delta: 13.5MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-13 01:45:31,926 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.12ms. Allocated memory is still 191.9MB. Free memory was 155.0MB in the beginning and 151.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-13 01:45:31,926 INFO L158 Benchmark]: Boogie Preprocessor took 52.12ms. Allocated memory is still 191.9MB. Free memory was 151.9MB in the beginning and 149.2MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-13 01:45:31,926 INFO L158 Benchmark]: RCFGBuilder took 612.49ms. Allocated memory is still 191.9MB. Free memory was 149.2MB in the beginning and 117.3MB in the end (delta: 31.9MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2022-12-13 01:45:31,926 INFO L158 Benchmark]: TraceAbstraction took 847668.39ms. Allocated memory was 191.9MB in the beginning and 934.3MB in the end (delta: 742.4MB). Free memory was 116.2MB in the beginning and 574.0MB in the end (delta: -457.8MB). Peak memory consumption was 550.4MB. Max. memory is 8.0GB. [2022-12-13 01:45:31,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 191.9MB. Free memory was 168.3MB in the beginning and 168.3MB in the end (delta: 57.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 253.85ms. Allocated memory is still 191.9MB. Free memory was 168.6MB in the beginning and 155.0MB in the end (delta: 13.5MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 82.12ms. Allocated memory is still 191.9MB. Free memory was 155.0MB in the beginning and 151.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 52.12ms. Allocated memory is still 191.9MB. Free memory was 151.9MB in the beginning and 149.2MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 612.49ms. Allocated memory is still 191.9MB. Free memory was 149.2MB in the beginning and 117.3MB in the end (delta: 31.9MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * TraceAbstraction took 847668.39ms. Allocated memory was 191.9MB in the beginning and 934.3MB in the end (delta: 742.4MB). Free memory was 116.2MB in the beginning and 574.0MB in the end (delta: -457.8MB). Peak memory consumption was 550.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.8s, 415 PlacesBefore, 29 PlacesAfterwards, 457 TransitionsBefore, 29 TransitionsAfterwards, 52052 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 122 TrivialYvCompositions, 264 ConcurrentYvCompositions, 42 ChoiceCompositions, 428 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 36100, independent: 36049, independent conditional: 36049, independent unconditional: 0, dependent: 51, dependent conditional: 51, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 36100, independent: 36049, independent conditional: 0, independent unconditional: 36049, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 36100, independent: 36049, independent conditional: 0, independent unconditional: 36049, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 36100, independent: 36049, independent conditional: 0, independent unconditional: 36049, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 30546, independent: 30518, independent conditional: 0, independent unconditional: 30518, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 30546, independent: 30518, independent conditional: 0, independent unconditional: 30518, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 28, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 95, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 36100, independent: 5531, independent conditional: 0, independent unconditional: 5531, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 30546, unknown conditional: 0, unknown unconditional: 30546] , Statistics on independence cache: Total cache size (in pairs): 68635, Positive cache size: 68607, Positive conditional cache size: 0, Positive unconditional cache size: 68607, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 28 PlacesBefore, 28 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 192 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 72, independent: 54, independent conditional: 54, independent unconditional: 0, dependent: 18, dependent conditional: 18, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 72, independent: 54, independent conditional: 0, independent unconditional: 54, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 72, independent: 54, independent conditional: 0, independent unconditional: 54, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 72, independent: 54, independent conditional: 0, independent unconditional: 54, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 64, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 64, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 43, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 72, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 64, unknown conditional: 0, unknown unconditional: 64] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 35 PlacesBefore, 35 PlacesAfterwards, 37 TransitionsBefore, 37 TransitionsAfterwards, 192 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 108, independent unconditional: 0, dependent: 18, dependent conditional: 18, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 48, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 48, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 126, independent: 60, independent conditional: 0, independent unconditional: 60, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 48, unknown conditional: 0, unknown unconditional: 48] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 96, Positive conditional cache size: 0, Positive unconditional cache size: 96, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 38 PlacesBefore, 38 PlacesAfterwards, 37 TransitionsBefore, 37 TransitionsAfterwards, 188 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 108, independent unconditional: 0, dependent: 18, dependent conditional: 18, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 96, Positive conditional cache size: 0, Positive unconditional cache size: 96, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 40 PlacesBefore, 40 PlacesAfterwards, 37 TransitionsBefore, 37 TransitionsAfterwards, 186 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 108, independent unconditional: 0, dependent: 18, dependent conditional: 18, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 96, Positive conditional cache size: 0, Positive unconditional cache size: 96, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 45 PlacesBefore, 45 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 186 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 18, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 18, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 18, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 18, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 18, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 96, Positive conditional cache size: 0, Positive unconditional cache size: 96, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 44 PlacesBefore, 43 PlacesAfterwards, 40 TransitionsBefore, 39 TransitionsAfterwards, 216 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 51, independent: 15, independent conditional: 15, independent unconditional: 0, dependent: 36, dependent conditional: 36, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 51, independent: 15, independent conditional: 15, independent unconditional: 0, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 51, independent: 15, independent conditional: 15, independent unconditional: 0, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 51, independent: 15, independent conditional: 15, independent unconditional: 0, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7, independent: 7, independent conditional: 7, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 51, independent: 8, independent conditional: 8, independent unconditional: 0, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 7, unknown conditional: 7, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 135, Positive cache size: 119, Positive conditional cache size: 7, Positive unconditional cache size: 112, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 44 PlacesBefore, 44 PlacesAfterwards, 41 TransitionsBefore, 41 TransitionsAfterwards, 214 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 22, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 4, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 4, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 4, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 10, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 10, dependent conditional: 10, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 139, Positive cache size: 119, Positive conditional cache size: 7, Positive unconditional cache size: 112, Negative cache size: 20, Negative conditional cache size: 4, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 44 PlacesBefore, 44 PlacesAfterwards, 41 TransitionsBefore, 41 TransitionsAfterwards, 176 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 22, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 4, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 4, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 4, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 4, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 139, Positive cache size: 119, Positive conditional cache size: 7, Positive unconditional cache size: 112, Negative cache size: 20, Negative conditional cache size: 4, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNetWithRepeatedLiptonReduction was analyzing trace of length 33 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 0ms.. - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNetWithRepeatedLiptonReduction was analyzing trace of length 33 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 0ms.. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNetWithRepeatedLiptonReduction was analyzing trace of length 33 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 0ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 691 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 847.5s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 17.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 722 IncrementalHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 0 mSDtfsCounter, 722 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=188occurred in iteration=5, InterpolantAutomatonStates: 33, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 243 NumberOfCodeBlocks, 227 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 266 ConstructedInterpolants, 0 QuantifiedInterpolants, 937 SizeOfPredicates, 46 NumberOfNonLiveVariables, 776 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 183/236 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