/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-RepeatedSemanticLbeWithPredicates.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-8d0d62b [2022-12-06 05:08:13,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 05:08:13,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 05:08:14,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 05:08:14,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 05:08:14,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 05:08:14,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 05:08:14,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 05:08:14,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 05:08:14,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 05:08:14,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 05:08:14,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 05:08:14,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 05:08:14,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 05:08:14,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 05:08:14,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 05:08:14,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 05:08:14,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 05:08:14,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 05:08:14,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 05:08:14,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 05:08:14,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 05:08:14,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 05:08:14,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 05:08:14,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 05:08:14,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 05:08:14,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 05:08:14,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 05:08:14,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 05:08:14,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 05:08:14,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 05:08:14,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 05:08:14,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 05:08:14,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 05:08:14,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 05:08:14,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 05:08:14,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 05:08:14,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 05:08:14,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 05:08:14,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 05:08:14,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 05:08:14,069 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-RepeatedSemanticLbeWithPredicates.epf [2022-12-06 05:08:14,097 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 05:08:14,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 05:08:14,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 05:08:14,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 05:08:14,098 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 05:08:14,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 05:08:14,099 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 05:08:14,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 05:08:14,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 05:08:14,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 05:08:14,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 05:08:14,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 05:08:14,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 05:08:14,100 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 05:08:14,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 05:08:14,101 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 05:08:14,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 05:08:14,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 05:08:14,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 05:08:14,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 05:08:14,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 05:08:14,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 05:08:14,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 05:08:14,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 05:08:14,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 05:08:14,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 05:08:14,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 05:08:14,102 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-06 05:08:14,102 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-06 05:08:14,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 05:08:14,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 05:08:14,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 05:08:14,368 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 05:08:14,368 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 05:08:14,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2022-12-06 05:08:15,284 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 05:08:15,463 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 05:08:15,463 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2022-12-06 05:08:15,468 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ee4b8f02/c2549168bd2641f8a245f72e84404db3/FLAG765020478 [2022-12-06 05:08:15,479 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ee4b8f02/c2549168bd2641f8a245f72e84404db3 [2022-12-06 05:08:15,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 05:08:15,481 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 05:08:15,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 05:08:15,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 05:08:15,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 05:08:15,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:08:15" (1/1) ... [2022-12-06 05:08:15,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6915a0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:08:15, skipping insertion in model container [2022-12-06 05:08:15,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:08:15" (1/1) ... [2022-12-06 05:08:15,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 05:08:15,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 05:08:15,642 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] [2022-12-06 05:08:15,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 05:08:15,666 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 05:08:15,702 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] [2022-12-06 05:08:15,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 05:08:15,717 INFO L208 MainTranslator]: Completed translation [2022-12-06 05:08:15,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:08:15 WrapperNode [2022-12-06 05:08:15,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 05:08:15,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 05:08:15,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 05:08:15,720 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 05:08:15,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:08:15" (1/1) ... [2022-12-06 05:08:15,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:08:15" (1/1) ... [2022-12-06 05:08:15,780 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 388 [2022-12-06 05:08:15,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 05:08:15,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 05:08:15,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 05:08:15,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 05:08:15,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:08:15" (1/1) ... [2022-12-06 05:08:15,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:08:15" (1/1) ... [2022-12-06 05:08:15,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:08:15" (1/1) ... [2022-12-06 05:08:15,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:08:15" (1/1) ... [2022-12-06 05:08:15,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:08:15" (1/1) ... [2022-12-06 05:08:15,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:08:15" (1/1) ... [2022-12-06 05:08:15,820 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:08:15" (1/1) ... [2022-12-06 05:08:15,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:08:15" (1/1) ... [2022-12-06 05:08:15,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 05:08:15,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 05:08:15,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 05:08:15,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 05:08:15,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:08:15" (1/1) ... [2022-12-06 05:08:15,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 05:08:15,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 05:08:15,853 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) [2022-12-06 05:08:15,865 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 [2022-12-06 05:08:15,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 05:08:15,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 05:08:15,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 05:08:15,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 05:08:15,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 05:08:15,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 05:08:15,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 05:08:15,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 05:08:15,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 05:08:15,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 05:08:15,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 05:08:15,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 05:08:15,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 05:08:15,893 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 05:08:16,006 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 05:08:16,007 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 05:08:16,443 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 05:08:16,453 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 05:08:16,453 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-06 05:08:16,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:08:16 BoogieIcfgContainer [2022-12-06 05:08:16,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 05:08:16,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 05:08:16,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 05:08:16,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 05:08:16,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:08:15" (1/3) ... [2022-12-06 05:08:16,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc0377d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:08:16, skipping insertion in model container [2022-12-06 05:08:16,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:08:15" (2/3) ... [2022-12-06 05:08:16,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc0377d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:08:16, skipping insertion in model container [2022-12-06 05:08:16,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:08:16" (3/3) ... [2022-12-06 05:08:16,460 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2022-12-06 05:08:16,471 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 05:08:16,472 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 05:08:16,472 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 05:08:16,590 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-06 05:08:16,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 467 transitions, 950 flow [2022-12-06 05:08:16,849 INFO L130 PetriNetUnfolder]: 49/465 cut-off events. [2022-12-06 05:08:16,849 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 05:08:16,857 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. [2022-12-06 05:08:16,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 425 places, 467 transitions, 950 flow [2022-12-06 05:08:16,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 415 places, 457 transitions, 926 flow [2022-12-06 05:08:16,865 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 05:08:16,877 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 415 places, 457 transitions, 926 flow [2022-12-06 05:08:16,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 415 places, 457 transitions, 926 flow [2022-12-06 05:08:16,941 INFO L130 PetriNetUnfolder]: 49/457 cut-off events. [2022-12-06 05:08:16,942 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 05:08:16,946 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. [2022-12-06 05:08:16,967 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 415 places, 457 transitions, 926 flow [2022-12-06 05:08:16,968 INFO L188 LiptonReduction]: Number of co-enabled transitions 52052 [2022-12-06 05:08:33,790 INFO L203 LiptonReduction]: Total number of compositions: 428 [2022-12-06 05:08:33,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 05:08:33,806 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;@50eaf4d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 05:08:33,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 05:08:33,810 INFO L130 PetriNetUnfolder]: 7/28 cut-off events. [2022-12-06 05:08:33,810 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 05:08:33,810 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 05:08:33,811 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 05:08:33,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 05:08:33,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 05:08:33,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1337779771, now seen corresponding path program 1 times [2022-12-06 05:08:33,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 05:08:33,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998912959] [2022-12-06 05:08:33,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 05:08:33,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 05:08:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 05:08:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 05:08:34,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 05:08:34,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998912959] [2022-12-06 05:08:34,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998912959] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 05:08:34,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 05:08:34,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-06 05:08:34,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65143030] [2022-12-06 05:08:34,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 05:08:34,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 05:08:34,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 05:08:34,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 05:08:34,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 05:08:34,169 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-06 05:08:34,170 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) [2022-12-06 05:08:34,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 05:08:34,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-06 05:08:34,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 05:08:34,269 INFO L130 PetriNetUnfolder]: 157/250 cut-off events. [2022-12-06 05:08:34,270 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-12-06 05:08:34,270 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. [2022-12-06 05:08:34,272 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2022-12-06 05:08:34,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 136 flow [2022-12-06 05:08:34,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 05:08:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 05:08:34,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2022-12-06 05:08:34,281 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2022-12-06 05:08:34,282 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 70 flow. Second operand 3 states and 33 transitions. [2022-12-06 05:08:34,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 136 flow [2022-12-06 05:08:34,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-06 05:08:34,286 INFO L231 Difference]: Finished difference. Result has 28 places, 31 transitions, 84 flow [2022-12-06 05:08:34,287 INFO L276 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} [2022-12-06 05:08:34,290 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2022-12-06 05:08:34,290 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 05:08:34,291 INFO L89 Accepts]: Start accepts. Operand has 28 places, 31 transitions, 84 flow [2022-12-06 05:08:34,293 INFO L95 Accepts]: Finished accepts. [2022-12-06 05:08:34,293 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 05:08:34,293 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 31 transitions, 84 flow [2022-12-06 05:08:34,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 31 transitions, 84 flow [2022-12-06 05:08:34,300 INFO L130 PetriNetUnfolder]: 7/31 cut-off events. [2022-12-06 05:08:34,300 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 05:08:34,300 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. [2022-12-06 05:08:34,300 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 31 transitions, 84 flow [2022-12-06 05:08:34,300 INFO L188 LiptonReduction]: Number of co-enabled transitions 192 [2022-12-06 05:08:34,334 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 05:08:34,335 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 45 [2022-12-06 05:08:34,335 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 31 transitions, 84 flow [2022-12-06 05:08:34,335 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) [2022-12-06 05:08:34,336 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 05:08:34,336 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 05:08:34,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 05:08:34,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 05:08:34,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 05:08:34,336 INFO L85 PathProgramCache]: Analyzing trace with hash -685768648, now seen corresponding path program 1 times [2022-12-06 05:08:34,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 05:08:34,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538311893] [2022-12-06 05:08:34,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 05:08:34,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 05:08:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 05:08:34,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 05:08:34,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 05:08:34,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538311893] [2022-12-06 05:08:34,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538311893] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 05:08:34,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438195227] [2022-12-06 05:08:34,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 05:08:34,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 05:08:34,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 05:08:34,441 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) [2022-12-06 05:08:34,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 05:08:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 05:08:34,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-06 05:08:34,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 05:08:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 05:08:34,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 05:08:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 05:08:34,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438195227] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 05:08:34,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 05:08:34,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-12-06 05:08:34,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710746915] [2022-12-06 05:08:34,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 05:08:34,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-06 05:08:34,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 05:08:34,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-06 05:08:34,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-06 05:08:34,600 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-06 05:08:34,600 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) [2022-12-06 05:08:34,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 05:08:34,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-06 05:08:34,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 05:08:34,757 INFO L130 PetriNetUnfolder]: 157/256 cut-off events. [2022-12-06 05:08:34,757 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 05:08:34,758 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. [2022-12-06 05:08:34,759 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 10 changer transitions 0/37 dead transitions. [2022-12-06 05:08:34,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 182 flow [2022-12-06 05:08:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 05:08:34,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 05:08:34,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 43 transitions. [2022-12-06 05:08:34,760 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2471264367816092 [2022-12-06 05:08:34,760 INFO L175 Difference]: Start difference. First operand has 28 places, 31 transitions, 84 flow. Second operand 6 states and 43 transitions. [2022-12-06 05:08:34,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 182 flow [2022-12-06 05:08:34,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-06 05:08:34,762 INFO L231 Difference]: Finished difference. Result has 35 places, 37 transitions, 146 flow [2022-12-06 05:08:34,762 INFO L276 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} [2022-12-06 05:08:34,762 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2022-12-06 05:08:34,762 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 05:08:34,763 INFO L89 Accepts]: Start accepts. Operand has 35 places, 37 transitions, 146 flow [2022-12-06 05:08:34,763 INFO L95 Accepts]: Finished accepts. [2022-12-06 05:08:34,764 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 05:08:34,764 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 37 transitions, 146 flow [2022-12-06 05:08:34,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 37 transitions, 146 flow [2022-12-06 05:08:34,769 INFO L130 PetriNetUnfolder]: 7/37 cut-off events. [2022-12-06 05:08:34,769 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-06 05:08:34,769 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. [2022-12-06 05:08:34,769 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 37 transitions, 146 flow [2022-12-06 05:08:34,769 INFO L188 LiptonReduction]: Number of co-enabled transitions 192 [2022-12-06 05:08:34,770 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 05:08:34,771 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 9 [2022-12-06 05:08:34,771 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 37 transitions, 146 flow [2022-12-06 05:08:34,771 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) [2022-12-06 05:08:34,771 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 05:08:34,771 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 05:08:34,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-06 05:08:34,978 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 [2022-12-06 05:08:34,978 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 05:08:34,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 05:08:34,979 INFO L85 PathProgramCache]: Analyzing trace with hash 154811961, now seen corresponding path program 2 times [2022-12-06 05:08:34,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 05:08:34,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296650970] [2022-12-06 05:08:34,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 05:08:34,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 05:08:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 05:08:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-06 05:08:35,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 05:08:35,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296650970] [2022-12-06 05:08:35,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296650970] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 05:08:35,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919323837] [2022-12-06 05:08:35,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 05:08:35,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 05:08:35,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 05:08:35,113 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) [2022-12-06 05:08:35,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 05:08:35,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-06 05:08:35,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 05:08:35,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-06 05:08:35,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 05:08:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-06 05:08:35,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 05:08:35,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919323837] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 05:08:35,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 05:08:35,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2022-12-06 05:08:35,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937548762] [2022-12-06 05:08:35,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 05:08:35,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 05:08:35,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 05:08:35,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 05:08:35,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-06 05:08:35,487 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-06 05:08:35,487 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) [2022-12-06 05:08:35,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 05:08:35,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-06 05:08:35,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 05:08:35,710 INFO L130 PetriNetUnfolder]: 165/285 cut-off events. [2022-12-06 05:08:35,710 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-06 05:08:35,710 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. [2022-12-06 05:08:35,712 INFO L137 encePairwiseOnDemand]: 25/29 looper letters, 43 selfloop transitions, 1 changer transitions 7/51 dead transitions. [2022-12-06 05:08:35,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 281 flow [2022-12-06 05:08:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 05:08:35,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 05:08:35,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2022-12-06 05:08:35,713 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3879310344827586 [2022-12-06 05:08:35,713 INFO L175 Difference]: Start difference. First operand has 35 places, 37 transitions, 146 flow. Second operand 4 states and 45 transitions. [2022-12-06 05:08:35,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 281 flow [2022-12-06 05:08:35,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 265 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-06 05:08:35,715 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 139 flow [2022-12-06 05:08:35,715 INFO L276 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} [2022-12-06 05:08:35,715 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2022-12-06 05:08:35,715 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 05:08:35,716 INFO L89 Accepts]: Start accepts. Operand has 39 places, 37 transitions, 139 flow [2022-12-06 05:08:35,716 INFO L95 Accepts]: Finished accepts. [2022-12-06 05:08:35,716 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 05:08:35,717 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 37 transitions, 139 flow [2022-12-06 05:08:35,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 37 transitions, 139 flow [2022-12-06 05:08:35,722 INFO L130 PetriNetUnfolder]: 6/47 cut-off events. [2022-12-06 05:08:35,722 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-06 05:08:35,722 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. [2022-12-06 05:08:35,722 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 37 transitions, 139 flow [2022-12-06 05:08:35,722 INFO L188 LiptonReduction]: Number of co-enabled transitions 188 [2022-12-06 05:08:35,723 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 05:08:35,724 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 9 [2022-12-06 05:08:35,724 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 139 flow [2022-12-06 05:08:35,724 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) [2022-12-06 05:08:35,724 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 05:08:35,724 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 05:08:35,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-06 05:08:35,927 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 [2022-12-06 05:08:35,928 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 05:08:35,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 05:08:35,928 INFO L85 PathProgramCache]: Analyzing trace with hash 672446397, now seen corresponding path program 3 times [2022-12-06 05:08:35,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 05:08:35,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804580744] [2022-12-06 05:08:35,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 05:08:35,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 05:08:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 05:08:36,041 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-06 05:08:36,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 05:08:36,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804580744] [2022-12-06 05:08:36,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804580744] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 05:08:36,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508676980] [2022-12-06 05:08:36,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 05:08:36,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 05:08:36,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 05:08:36,045 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) [2022-12-06 05:08:36,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 05:08:36,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-06 05:08:36,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 05:08:36,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-06 05:08:36,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 05:08:36,404 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-06 05:08:36,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 05:08:36,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508676980] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 05:08:36,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 05:08:36,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2022-12-06 05:08:36,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178423660] [2022-12-06 05:08:36,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 05:08:36,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 05:08:36,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 05:08:36,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 05:08:36,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-06 05:08:36,406 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-06 05:08:36,406 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) [2022-12-06 05:08:36,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 05:08:36,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-06 05:08:36,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 05:08:36,597 INFO L130 PetriNetUnfolder]: 173/317 cut-off events. [2022-12-06 05:08:36,598 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-12-06 05:08:36,598 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. [2022-12-06 05:08:36,599 INFO L137 encePairwiseOnDemand]: 25/29 looper letters, 51 selfloop transitions, 1 changer transitions 5/57 dead transitions. [2022-12-06 05:08:36,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 302 flow [2022-12-06 05:08:36,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 05:08:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 05:08:36,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 51 transitions. [2022-12-06 05:08:36,600 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4396551724137931 [2022-12-06 05:08:36,601 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 139 flow. Second operand 4 states and 51 transitions. [2022-12-06 05:08:36,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 302 flow [2022-12-06 05:08:36,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 296 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-06 05:08:36,603 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 145 flow [2022-12-06 05:08:36,603 INFO L276 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} [2022-12-06 05:08:36,603 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2022-12-06 05:08:36,603 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 05:08:36,604 INFO L89 Accepts]: Start accepts. Operand has 41 places, 37 transitions, 145 flow [2022-12-06 05:08:36,604 INFO L95 Accepts]: Finished accepts. [2022-12-06 05:08:36,604 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 05:08:36,605 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 37 transitions, 145 flow [2022-12-06 05:08:36,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions, 145 flow [2022-12-06 05:08:36,610 INFO L130 PetriNetUnfolder]: 5/47 cut-off events. [2022-12-06 05:08:36,610 INFO L131 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2022-12-06 05:08:36,610 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. [2022-12-06 05:08:36,610 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 37 transitions, 145 flow [2022-12-06 05:08:36,610 INFO L188 LiptonReduction]: Number of co-enabled transitions 186 [2022-12-06 05:08:36,611 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 05:08:36,612 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 9 [2022-12-06 05:08:36,612 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 145 flow [2022-12-06 05:08:36,612 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) [2022-12-06 05:08:36,612 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 05:08:36,612 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 05:08:36,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-06 05:08:36,819 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 [2022-12-06 05:08:36,819 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 05:08:36,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 05:08:36,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1666563630, now seen corresponding path program 1 times [2022-12-06 05:08:36,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 05:08:36,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584781350] [2022-12-06 05:08:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 05:08:36,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 05:08:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 05:08:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-06 05:08:36,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 05:08:36,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584781350] [2022-12-06 05:08:36,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584781350] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 05:08:36,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444376677] [2022-12-06 05:08:36,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 05:08:36,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 05:08:36,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 05:08:36,922 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) [2022-12-06 05:08:36,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 05:08:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 05:08:37,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 05:08:37,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 05:08:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-06 05:08:37,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 05:08:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-06 05:08:37,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444376677] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 05:08:37,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 05:08:37,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-12-06 05:08:37,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218360410] [2022-12-06 05:08:37,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 05:08:37,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-06 05:08:37,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 05:08:37,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-06 05:08:37,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-12-06 05:08:37,120 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-06 05:08:37,120 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) [2022-12-06 05:08:37,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 05:08:37,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-06 05:08:37,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 05:08:37,236 INFO L130 PetriNetUnfolder]: 172/313 cut-off events. [2022-12-06 05:08:37,236 INFO L131 PetriNetUnfolder]: For 181/181 co-relation queries the response was YES. [2022-12-06 05:08:37,236 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. [2022-12-06 05:08:37,237 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 12 changer transitions 0/39 dead transitions. [2022-12-06 05:08:37,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 235 flow [2022-12-06 05:08:37,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 05:08:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 05:08:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 41 transitions. [2022-12-06 05:08:37,264 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2019704433497537 [2022-12-06 05:08:37,264 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 145 flow. Second operand 7 states and 41 transitions. [2022-12-06 05:08:37,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 235 flow [2022-12-06 05:08:37,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 232 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-06 05:08:37,265 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 188 flow [2022-12-06 05:08:37,266 INFO L276 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} [2022-12-06 05:08:37,266 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2022-12-06 05:08:37,266 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 05:08:37,266 INFO L89 Accepts]: Start accepts. Operand has 45 places, 39 transitions, 188 flow [2022-12-06 05:08:37,267 INFO L95 Accepts]: Finished accepts. [2022-12-06 05:08:37,267 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 05:08:37,267 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 39 transitions, 188 flow [2022-12-06 05:08:37,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 39 transitions, 188 flow [2022-12-06 05:08:37,273 INFO L130 PetriNetUnfolder]: 5/49 cut-off events. [2022-12-06 05:08:37,273 INFO L131 PetriNetUnfolder]: For 7/9 co-relation queries the response was YES. [2022-12-06 05:08:37,273 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. [2022-12-06 05:08:37,273 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 39 transitions, 188 flow [2022-12-06 05:08:37,273 INFO L188 LiptonReduction]: Number of co-enabled transitions 186 [2022-12-06 05:08:37,274 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 05:08:37,274 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 8 [2022-12-06 05:08:37,275 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 188 flow [2022-12-06 05:08:37,275 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) [2022-12-06 05:08:37,275 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 05:08:37,275 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 05:08:37,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-06 05:08:37,483 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 [2022-12-06 05:08:37,483 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 05:08:37,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 05:08:37,484 INFO L85 PathProgramCache]: Analyzing trace with hash -508501901, now seen corresponding path program 2 times [2022-12-06 05:08:37,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 05:08:37,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020526390] [2022-12-06 05:08:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 05:08:37,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 05:08:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 05:08:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-06 05:08:37,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 05:08:37,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020526390] [2022-12-06 05:08:37,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020526390] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 05:08:37,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 05:08:37,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 05:08:37,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271348198] [2022-12-06 05:08:37,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 05:08:37,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 05:08:37,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 05:08:37,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 05:08:37,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 05:08:37,599 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-06 05:08:37,599 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) [2022-12-06 05:08:37,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 05:08:37,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-06 05:08:37,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 05:08:37,697 INFO L130 PetriNetUnfolder]: 211/378 cut-off events. [2022-12-06 05:08:37,697 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-12-06 05:08:37,697 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. [2022-12-06 05:08:37,698 INFO L137 encePairwiseOnDemand]: 26/29 looper letters, 53 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2022-12-06 05:08:37,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 337 flow [2022-12-06 05:08:37,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 05:08:37,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 05:08:37,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2022-12-06 05:08:37,699 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2022-12-06 05:08:37,700 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 188 flow. Second operand 3 states and 46 transitions. [2022-12-06 05:08:37,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 337 flow [2022-12-06 05:08:37,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 313 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-12-06 05:08:37,701 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 176 flow [2022-12-06 05:08:37,701 INFO L276 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} [2022-12-06 05:08:37,702 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2022-12-06 05:08:37,702 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 05:08:37,702 INFO L89 Accepts]: Start accepts. Operand has 44 places, 40 transitions, 176 flow [2022-12-06 05:08:37,715 INFO L95 Accepts]: Finished accepts. [2022-12-06 05:08:37,715 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 05:08:37,715 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 40 transitions, 176 flow [2022-12-06 05:08:37,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 40 transitions, 176 flow [2022-12-06 05:08:37,721 INFO L130 PetriNetUnfolder]: 5/50 cut-off events. [2022-12-06 05:08:37,721 INFO L131 PetriNetUnfolder]: For 16/18 co-relation queries the response was YES. [2022-12-06 05:08:37,722 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. [2022-12-06 05:08:37,722 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 40 transitions, 176 flow [2022-12-06 05:08:37,722 INFO L188 LiptonReduction]: Number of co-enabled transitions 216 [2022-12-06 05:08:39,379 INFO L203 LiptonReduction]: Total number of compositions: 1 [2022-12-06 05:08:39,380 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1678 [2022-12-06 05:08:39,380 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 172 flow [2022-12-06 05:08:39,380 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) [2022-12-06 05:08:39,380 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 05:08:39,381 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 05:08:39,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 05:08:39,381 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 05:08:39,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 05:08:39,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1343580082, now seen corresponding path program 1 times [2022-12-06 05:08:39,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 05:08:39,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491615199] [2022-12-06 05:08:39,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 05:08:39,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 05:08:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 05:08:39,509 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-06 05:08:39,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 05:08:39,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491615199] [2022-12-06 05:08:39,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491615199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 05:08:39,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 05:08:39,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 05:08:39,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500159620] [2022-12-06 05:08:39,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 05:08:39,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 05:08:39,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 05:08:39,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 05:08:39,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 05:08:39,511 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-06 05:08:39,511 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) [2022-12-06 05:08:39,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 05:08:39,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-06 05:08:39,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 05:08:39,618 INFO L130 PetriNetUnfolder]: 266/467 cut-off events. [2022-12-06 05:08:39,618 INFO L131 PetriNetUnfolder]: For 354/354 co-relation queries the response was YES. [2022-12-06 05:08:39,618 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. [2022-12-06 05:08:39,620 INFO L137 encePairwiseOnDemand]: 25/29 looper letters, 50 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2022-12-06 05:08:39,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 321 flow [2022-12-06 05:08:39,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 05:08:39,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 05:08:39,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2022-12-06 05:08:39,622 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2022-12-06 05:08:39,622 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 172 flow. Second operand 3 states and 44 transitions. [2022-12-06 05:08:39,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 321 flow [2022-12-06 05:08:39,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 305 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-06 05:08:39,624 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 183 flow [2022-12-06 05:08:39,624 INFO L276 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} [2022-12-06 05:08:39,625 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2022-12-06 05:08:39,625 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 05:08:39,625 INFO L89 Accepts]: Start accepts. Operand has 44 places, 41 transitions, 183 flow [2022-12-06 05:08:39,626 INFO L95 Accepts]: Finished accepts. [2022-12-06 05:08:39,626 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 05:08:39,626 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 41 transitions, 183 flow [2022-12-06 05:08:39,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 41 transitions, 183 flow [2022-12-06 05:08:39,632 INFO L130 PetriNetUnfolder]: 6/56 cut-off events. [2022-12-06 05:08:39,633 INFO L131 PetriNetUnfolder]: For 16/18 co-relation queries the response was YES. [2022-12-06 05:08:39,633 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. [2022-12-06 05:08:39,633 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 41 transitions, 183 flow [2022-12-06 05:08:39,633 INFO L188 LiptonReduction]: Number of co-enabled transitions 214 [2022-12-06 05:08:39,643 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 05:08:39,644 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 19 [2022-12-06 05:08:39,644 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 183 flow [2022-12-06 05:08:39,645 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) [2022-12-06 05:08:39,645 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 05:08:39,646 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 05:08:39,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 05:08:39,646 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 05:08:39,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 05:08:39,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1460399636, now seen corresponding path program 1 times [2022-12-06 05:08:39,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 05:08:39,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066341753] [2022-12-06 05:08:39,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 05:08:39,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 05:08:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 05:08:39,744 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-06 05:08:39,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 05:08:39,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066341753] [2022-12-06 05:08:39,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066341753] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 05:08:39,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 05:08:39,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 05:08:39,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50595845] [2022-12-06 05:08:39,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 05:08:39,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 05:08:39,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 05:08:39,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 05:08:39,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 05:08:39,746 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-06 05:08:39,746 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) [2022-12-06 05:08:39,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 05:08:39,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-06 05:08:39,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 05:08:39,848 INFO L130 PetriNetUnfolder]: 205/362 cut-off events. [2022-12-06 05:08:39,848 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2022-12-06 05:08:39,848 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. [2022-12-06 05:08:39,850 INFO L137 encePairwiseOnDemand]: 25/29 looper letters, 42 selfloop transitions, 2 changer transitions 4/48 dead transitions. [2022-12-06 05:08:39,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 302 flow [2022-12-06 05:08:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 05:08:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 05:08:39,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2022-12-06 05:08:39,850 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4367816091954023 [2022-12-06 05:08:39,850 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 183 flow. Second operand 3 states and 38 transitions. [2022-12-06 05:08:39,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 302 flow [2022-12-06 05:08:39,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-06 05:08:39,852 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 188 flow [2022-12-06 05:08:39,852 INFO L276 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} [2022-12-06 05:08:39,852 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2022-12-06 05:08:39,852 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 05:08:39,852 INFO L89 Accepts]: Start accepts. Operand has 46 places, 41 transitions, 188 flow [2022-12-06 05:08:39,853 INFO L95 Accepts]: Finished accepts. [2022-12-06 05:08:39,853 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 05:08:39,853 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 41 transitions, 188 flow [2022-12-06 05:08:39,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 41 transitions, 188 flow [2022-12-06 05:08:39,860 INFO L130 PetriNetUnfolder]: 8/48 cut-off events. [2022-12-06 05:08:39,860 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-12-06 05:08:39,860 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. [2022-12-06 05:08:39,860 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 41 transitions, 188 flow [2022-12-06 05:08:39,860 INFO L188 LiptonReduction]: Number of co-enabled transitions 176 [2022-12-06 05:08:39,861 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 05:08:39,861 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 9 [2022-12-06 05:08:39,861 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 188 flow [2022-12-06 05:08:39,862 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) [2022-12-06 05:08:39,862 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 05:08:39,862 INFO L213 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] [2022-12-06 05:08:39,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-06 05:08:39,862 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 05:08:39,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 05:08:39,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1898492142, now seen corresponding path program 1 times [2022-12-06 05:08:39,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 05:08:39,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998550921] [2022-12-06 05:08:39,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 05:08:39,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 05:08:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 05:08:42,194 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-06 05:08:42,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 05:08:42,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998550921] [2022-12-06 05:08:42,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998550921] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 05:08:42,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323750007] [2022-12-06 05:08:42,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 05:08:42,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 05:08:42,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 05:08:42,196 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) [2022-12-06 05:08:42,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 05:08:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 05:08:42,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-06 05:08:42,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 05:08:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-06 05:08:43,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 05:08:55,087 WARN L233 SmtUtils]: Spent 10.18s 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) [2022-12-06 05:08:56,025 INFO L321 Elim1Store]: treesize reduction 37, result has 92.9 percent of original size [2022-12-06 05:08:56,026 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... [2022-12-06 05:21:51,094 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 [2022-12-06 05:21:51,094 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 [2022-12-06 05:21:51,096 WARN L249 SmtUtils]: Removed 2 from assertion stack [2022-12-06 05:21:51,098 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-06 05:21:51,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-06 05:21:51,298 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 [2022-12-06 05:21:51,299 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 5 for 7ms.. [2022-12-06 05:21:51,300 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-06 05:21:51,300 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-06 05:21:51,300 INFO L458 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2022-12-06 05:21:51,303 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 05:21:51,303 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 05:21:51,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:21:51 BasicIcfg [2022-12-06 05:21:51,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 05:21:51,305 INFO L158 Benchmark]: Toolchain (without parser) took 815823.69ms. Allocated memory was 200.3MB in the beginning and 767.6MB in the end (delta: 567.3MB). Free memory was 176.2MB in the beginning and 522.8MB in the end (delta: -346.6MB). Peak memory consumption was 491.2MB. Max. memory is 8.0GB. [2022-12-06 05:21:51,305 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 200.3MB. Free memory was 176.7MB in the beginning and 176.6MB in the end (delta: 83.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 05:21:51,305 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.17ms. Allocated memory is still 200.3MB. Free memory was 176.2MB in the beginning and 162.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-06 05:21:51,305 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.41ms. Allocated memory is still 200.3MB. Free memory was 162.6MB in the beginning and 159.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-06 05:21:51,306 INFO L158 Benchmark]: Boogie Preprocessor took 42.16ms. Allocated memory is still 200.3MB. Free memory was 159.4MB in the beginning and 156.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-06 05:21:51,306 INFO L158 Benchmark]: RCFGBuilder took 631.11ms. Allocated memory is still 200.3MB. Free memory was 156.8MB in the beginning and 124.8MB in the end (delta: 32.0MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2022-12-06 05:21:51,306 INFO L158 Benchmark]: TraceAbstraction took 814848.43ms. Allocated memory was 200.3MB in the beginning and 767.6MB in the end (delta: 567.3MB). Free memory was 124.3MB in the beginning and 522.8MB in the end (delta: -398.5MB). Peak memory consumption was 438.8MB. Max. memory is 8.0GB. [2022-12-06 05:21:51,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 200.3MB. Free memory was 176.7MB in the beginning and 176.6MB in the end (delta: 83.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 236.17ms. Allocated memory is still 200.3MB. Free memory was 176.2MB in the beginning and 162.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.41ms. Allocated memory is still 200.3MB. Free memory was 162.6MB in the beginning and 159.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.16ms. Allocated memory is still 200.3MB. Free memory was 159.4MB in the beginning and 156.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 631.11ms. Allocated memory is still 200.3MB. Free memory was 156.8MB in the beginning and 124.8MB in the end (delta: 32.0MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * TraceAbstraction took 814848.43ms. Allocated memory was 200.3MB in the beginning and 767.6MB in the end (delta: 567.3MB). Free memory was 124.3MB in the beginning and 522.8MB in the end (delta: -398.5MB). Peak memory consumption was 438.8MB. 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: 70, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 70, dependent conditional: 0, dependent unconditional: 70, 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: 32, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 32, dependent conditional: 0, dependent unconditional: 32, 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: 1.7s, 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: 9, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 9, dependent conditional: 9, 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 5 for 7ms.. - 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 5 for 7ms.. - 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 5 for 7ms.. - 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: 814.7s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 17.2s, 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, 0.4s 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, 0.3s SatisfiabilityAnalysisTime, 1.5s 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