/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:01:12,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:01:12,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:01:12,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 07:01:12,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:01:12,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:01:12,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:01:12,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:01:12,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:01:12,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:01:12,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:01:12,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:01:12,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:01:12,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:01:12,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:01:12,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:01:12,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 07:01:12,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 07:01:12,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 07:01:12,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 07:01:12,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 07:01:12,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2023-01-28 07:01:12,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:01:12,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:01:12,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:01:12,619 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 07:01:12,632 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:01:12,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:01:12,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:01:12,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:01:12,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:01:12,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:01:12,633 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:01:12,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:01:12,634 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:01:12,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:01:12,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:01:12,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:01:12,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:01:12,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:01:12,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:01:12,634 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:01:12,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:01:12,635 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:01:12,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:01:12,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:01:12,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:01:12,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:01:12,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:01:12,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:01:12,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:01:12,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:01:12,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:01:12,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:01:12,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:01:12,636 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:01:12,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:01:12,636 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:01:12,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:01:12,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:01:12,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:01:12,852 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:01:12,853 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:01:12,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.i [2023-01-28 07:01:13,774 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:01:13,972 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:01:13,972 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.i [2023-01-28 07:01:13,982 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53d2a64d5/ed0814caa4e645a388a023c79c0026b2/FLAG7f41ae1d0 [2023-01-28 07:01:13,992 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53d2a64d5/ed0814caa4e645a388a023c79c0026b2 [2023-01-28 07:01:13,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:01:13,995 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:01:13,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:01:13,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:01:13,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:01:13,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:01:13" (1/1) ... [2023-01-28 07:01:13,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fccaf88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:13, skipping insertion in model container [2023-01-28 07:01:13,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:01:13" (1/1) ... [2023-01-28 07:01:14,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:01:14,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:01:14,123 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.i[945,958] [2023-01-28 07:01:14,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:01:14,260 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:01:14,271 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.i[945,958] [2023-01-28 07:01:14,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:01:14,317 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:01:14,317 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:01:14,322 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:01:14,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:14 WrapperNode [2023-01-28 07:01:14,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:01:14,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:01:14,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:01:14,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:01:14,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:14" (1/1) ... [2023-01-28 07:01:14,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:14" (1/1) ... [2023-01-28 07:01:14,367 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-01-28 07:01:14,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:01:14,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:01:14,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:01:14,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:01:14,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:14" (1/1) ... [2023-01-28 07:01:14,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:14" (1/1) ... [2023-01-28 07:01:14,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:14" (1/1) ... [2023-01-28 07:01:14,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:14" (1/1) ... [2023-01-28 07:01:14,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:14" (1/1) ... [2023-01-28 07:01:14,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:14" (1/1) ... [2023-01-28 07:01:14,397 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:14" (1/1) ... [2023-01-28 07:01:14,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:14" (1/1) ... [2023-01-28 07:01:14,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:01:14,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:01:14,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:01:14,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:01:14,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:14" (1/1) ... [2023-01-28 07:01:14,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:01:14,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:01:14,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 07:01:14,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 07:01:14,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:01:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:01:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:01:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:01:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:01:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 07:01:14,464 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 07:01:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 07:01:14,464 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 07:01:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 07:01:14,464 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 07:01:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:01:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:01:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:01:14,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:01:14,466 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 07:01:14,577 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:01:14,578 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:01:14,792 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:01:14,796 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:01:14,797 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:01:14,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:01:14 BoogieIcfgContainer [2023-01-28 07:01:14,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:01:14,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:01:14,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:01:14,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:01:14,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:01:13" (1/3) ... [2023-01-28 07:01:14,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34156e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:01:14, skipping insertion in model container [2023-01-28 07:01:14,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:14" (2/3) ... [2023-01-28 07:01:14,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34156e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:01:14, skipping insertion in model container [2023-01-28 07:01:14,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:01:14" (3/3) ... [2023-01-28 07:01:14,804 INFO L112 eAbstractionObserver]: Analyzing ICFG safe011_tso.i [2023-01-28 07:01:14,819 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:01:14,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 07:01:14,819 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:01:14,889 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:01:14,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-01-28 07:01:14,974 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2023-01-28 07:01:14,975 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:01:14,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-01-28 07:01:14,979 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-01-28 07:01:14,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-01-28 07:01:14,985 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:01:15,001 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-28 07:01:15,005 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-28 07:01:15,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-01-28 07:01:15,028 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2023-01-28 07:01:15,028 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:01:15,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-01-28 07:01:15,030 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-28 07:01:16,498 INFO L134 LiptonReduction]: Checked pairs total: 1928 [2023-01-28 07:01:16,498 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-01-28 07:01:16,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:01:16,512 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@77d014e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:01:16,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 07:01:16,515 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-01-28 07:01:16,515 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:01:16,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:16,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:16,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:01:16,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:16,519 INFO L85 PathProgramCache]: Analyzing trace with hash -885043343, now seen corresponding path program 1 times [2023-01-28 07:01:16,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:16,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162976542] [2023-01-28 07:01:16,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:16,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:01:16,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:16,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162976542] [2023-01-28 07:01:16,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162976542] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:16,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:16,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:01:16,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220691007] [2023-01-28 07:01:16,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:16,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:01:16,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:16,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:01:16,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:01:16,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 139 [2023-01-28 07:01:16,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:16,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:16,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 139 [2023-01-28 07:01:16,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:17,062 INFO L130 PetriNetUnfolder]: 408/708 cut-off events. [2023-01-28 07:01:17,062 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-01-28 07:01:17,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 708 events. 408/708 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3518 event pairs, 157 based on Foata normal form. 37/745 useless extension candidates. Maximal degree in co-relation 1420. Up to 382 conditions per place. [2023-01-28 07:01:17,067 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-01-28 07:01:17,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 133 flow [2023-01-28 07:01:17,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:01:17,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:01:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-01-28 07:01:17,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683453237410072 [2023-01-28 07:01:17,080 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-01-28 07:01:17,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-01-28 07:01:17,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:17,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-01-28 07:01:17,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,092 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,094 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 237 transitions. [2023-01-28 07:01:17,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 133 flow [2023-01-28 07:01:17,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:01:17,097 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-01-28 07:01:17,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-01-28 07:01:17,102 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-01-28 07:01:17,102 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-01-28 07:01:17,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:17,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:17,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:01:17,103 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:01:17,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:17,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1666540412, now seen corresponding path program 1 times [2023-01-28 07:01:17,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:17,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405192963] [2023-01-28 07:01:17,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:17,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:01:17,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:17,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405192963] [2023-01-28 07:01:17,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405192963] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:17,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:17,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:01:17,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383747745] [2023-01-28 07:01:17,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:17,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:01:17,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:17,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:01:17,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:01:17,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 139 [2023-01-28 07:01:17,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:17,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 139 [2023-01-28 07:01:17,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:17,355 INFO L130 PetriNetUnfolder]: 297/553 cut-off events. [2023-01-28 07:01:17,355 INFO L131 PetriNetUnfolder]: For 241/242 co-relation queries the response was YES. [2023-01-28 07:01:17,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 553 events. 297/553 cut-off events. For 241/242 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2747 event pairs, 97 based on Foata normal form. 9/558 useless extension candidates. Maximal degree in co-relation 1436. Up to 348 conditions per place. [2023-01-28 07:01:17,360 INFO L137 encePairwiseOnDemand]: 136/139 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2023-01-28 07:01:17,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 160 flow [2023-01-28 07:01:17,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:01:17,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:01:17,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-01-28 07:01:17,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875299760191847 [2023-01-28 07:01:17,365 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-01-28 07:01:17,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-01-28 07:01:17,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:17,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-01-28 07:01:17,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,368 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,368 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 3 states and 245 transitions. [2023-01-28 07:01:17,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 160 flow [2023-01-28 07:01:17,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:01:17,372 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 85 flow [2023-01-28 07:01:17,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-01-28 07:01:17,373 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-01-28 07:01:17,373 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 85 flow [2023-01-28 07:01:17,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:17,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:17,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:01:17,374 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:01:17,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:17,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1666541156, now seen corresponding path program 1 times [2023-01-28 07:01:17,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:17,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022287930] [2023-01-28 07:01:17,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:17,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:01:17,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:17,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022287930] [2023-01-28 07:01:17,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022287930] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:17,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:17,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:01:17,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84925318] [2023-01-28 07:01:17,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:17,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:01:17,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:17,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:01:17,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:01:17,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 139 [2023-01-28 07:01:17,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:17,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 139 [2023-01-28 07:01:17,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:17,598 INFO L130 PetriNetUnfolder]: 365/642 cut-off events. [2023-01-28 07:01:17,599 INFO L131 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2023-01-28 07:01:17,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1665 conditions, 642 events. 365/642 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3101 event pairs, 61 based on Foata normal form. 3/644 useless extension candidates. Maximal degree in co-relation 1652. Up to 304 conditions per place. [2023-01-28 07:01:17,602 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 33 selfloop transitions, 9 changer transitions 0/43 dead transitions. [2023-01-28 07:01:17,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 239 flow [2023-01-28 07:01:17,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:01:17,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:01:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2023-01-28 07:01:17,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683453237410072 [2023-01-28 07:01:17,604 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 316 transitions. [2023-01-28 07:01:17,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 316 transitions. [2023-01-28 07:01:17,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:17,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 316 transitions. [2023-01-28 07:01:17,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,606 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,607 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 85 flow. Second operand 4 states and 316 transitions. [2023-01-28 07:01:17,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 239 flow [2023-01-28 07:01:17,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 43 transitions, 229 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:01:17,609 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 136 flow [2023-01-28 07:01:17,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-01-28 07:01:17,610 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-01-28 07:01:17,612 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 136 flow [2023-01-28 07:01:17,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:17,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:17,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:01:17,613 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:01:17,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:17,614 INFO L85 PathProgramCache]: Analyzing trace with hash -123146519, now seen corresponding path program 1 times [2023-01-28 07:01:17,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:17,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782365739] [2023-01-28 07:01:17,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:17,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:01:17,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:17,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782365739] [2023-01-28 07:01:17,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782365739] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:17,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:17,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:01:17,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248523281] [2023-01-28 07:01:17,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:17,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:01:17,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:17,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:01:17,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:01:17,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 139 [2023-01-28 07:01:17,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:17,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 139 [2023-01-28 07:01:17,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:17,822 INFO L130 PetriNetUnfolder]: 351/626 cut-off events. [2023-01-28 07:01:17,822 INFO L131 PetriNetUnfolder]: For 490/490 co-relation queries the response was YES. [2023-01-28 07:01:17,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1847 conditions, 626 events. 351/626 cut-off events. For 490/490 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3025 event pairs, 46 based on Foata normal form. 3/629 useless extension candidates. Maximal degree in co-relation 1832. Up to 293 conditions per place. [2023-01-28 07:01:17,827 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 35 selfloop transitions, 12 changer transitions 0/48 dead transitions. [2023-01-28 07:01:17,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 48 transitions, 316 flow [2023-01-28 07:01:17,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:01:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:01:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-01-28 07:01:17,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5665467625899281 [2023-01-28 07:01:17,829 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-01-28 07:01:17,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-01-28 07:01:17,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:17,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-01-28 07:01:17,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,834 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,834 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 136 flow. Second operand 4 states and 315 transitions. [2023-01-28 07:01:17,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 48 transitions, 316 flow [2023-01-28 07:01:17,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:01:17,839 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 240 flow [2023-01-28 07:01:17,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-01-28 07:01:17,840 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-01-28 07:01:17,840 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 240 flow [2023-01-28 07:01:17,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:17,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:17,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:01:17,841 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:01:17,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:17,842 INFO L85 PathProgramCache]: Analyzing trace with hash 389716013, now seen corresponding path program 1 times [2023-01-28 07:01:17,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:17,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886638362] [2023-01-28 07:01:17,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:17,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:01:17,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:17,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886638362] [2023-01-28 07:01:17,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886638362] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:17,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:17,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:01:17,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968663554] [2023-01-28 07:01:17,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:17,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:01:17,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:17,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:01:17,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:01:17,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 139 [2023-01-28 07:01:17,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:17,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:17,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 139 [2023-01-28 07:01:17,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:18,063 INFO L130 PetriNetUnfolder]: 374/665 cut-off events. [2023-01-28 07:01:18,064 INFO L131 PetriNetUnfolder]: For 1128/1128 co-relation queries the response was YES. [2023-01-28 07:01:18,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 665 events. 374/665 cut-off events. For 1128/1128 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3303 event pairs, 75 based on Foata normal form. 6/671 useless extension candidates. Maximal degree in co-relation 2238. Up to 295 conditions per place. [2023-01-28 07:01:18,067 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 33 selfloop transitions, 17 changer transitions 0/51 dead transitions. [2023-01-28 07:01:18,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 391 flow [2023-01-28 07:01:18,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:01:18,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:01:18,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2023-01-28 07:01:18,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683453237410072 [2023-01-28 07:01:18,068 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 316 transitions. [2023-01-28 07:01:18,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 316 transitions. [2023-01-28 07:01:18,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:18,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 316 transitions. [2023-01-28 07:01:18,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,070 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,070 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 240 flow. Second operand 4 states and 316 transitions. [2023-01-28 07:01:18,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 391 flow [2023-01-28 07:01:18,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 51 transitions, 391 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:01:18,075 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 310 flow [2023-01-28 07:01:18,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2023-01-28 07:01:18,077 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-01-28 07:01:18,077 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 310 flow [2023-01-28 07:01:18,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:18,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:18,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:01:18,078 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:01:18,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:18,078 INFO L85 PathProgramCache]: Analyzing trace with hash 477446011, now seen corresponding path program 1 times [2023-01-28 07:01:18,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:18,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832320501] [2023-01-28 07:01:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:18,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:18,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:01:18,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:18,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832320501] [2023-01-28 07:01:18,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832320501] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:18,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:18,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:01:18,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48840776] [2023-01-28 07:01:18,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:18,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:01:18,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:18,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:01:18,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:01:18,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 07:01:18,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:18,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 07:01:18,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:18,313 INFO L130 PetriNetUnfolder]: 625/1025 cut-off events. [2023-01-28 07:01:18,313 INFO L131 PetriNetUnfolder]: For 3768/3768 co-relation queries the response was YES. [2023-01-28 07:01:18,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3891 conditions, 1025 events. 625/1025 cut-off events. For 3768/3768 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4660 event pairs, 85 based on Foata normal form. 9/1034 useless extension candidates. Maximal degree in co-relation 3867. Up to 360 conditions per place. [2023-01-28 07:01:18,318 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 46 selfloop transitions, 23 changer transitions 9/78 dead transitions. [2023-01-28 07:01:18,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 78 transitions, 788 flow [2023-01-28 07:01:18,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:01:18,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:01:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 387 transitions. [2023-01-28 07:01:18,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568345323741007 [2023-01-28 07:01:18,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 387 transitions. [2023-01-28 07:01:18,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 387 transitions. [2023-01-28 07:01:18,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:18,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 387 transitions. [2023-01-28 07:01:18,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,323 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,323 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 310 flow. Second operand 5 states and 387 transitions. [2023-01-28 07:01:18,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 78 transitions, 788 flow [2023-01-28 07:01:18,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 78 transitions, 780 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-28 07:01:18,330 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 549 flow [2023-01-28 07:01:18,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=549, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-01-28 07:01:18,331 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2023-01-28 07:01:18,331 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 549 flow [2023-01-28 07:01:18,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:18,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:18,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:01:18,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:01:18,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:18,332 INFO L85 PathProgramCache]: Analyzing trace with hash 461971741, now seen corresponding path program 2 times [2023-01-28 07:01:18,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:18,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119128769] [2023-01-28 07:01:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:18,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:18,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:01:18,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:18,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119128769] [2023-01-28 07:01:18,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119128769] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:18,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:18,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:01:18,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000453042] [2023-01-28 07:01:18,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:18,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:01:18,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:18,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:01:18,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:01:18,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 07:01:18,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 549 flow. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:18,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 07:01:18,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:18,556 INFO L130 PetriNetUnfolder]: 629/1066 cut-off events. [2023-01-28 07:01:18,556 INFO L131 PetriNetUnfolder]: For 6510/6510 co-relation queries the response was YES. [2023-01-28 07:01:18,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4506 conditions, 1066 events. 629/1066 cut-off events. For 6510/6510 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5101 event pairs, 150 based on Foata normal form. 33/1099 useless extension candidates. Maximal degree in co-relation 4476. Up to 468 conditions per place. [2023-01-28 07:01:18,561 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 31 selfloop transitions, 7 changer transitions 35/73 dead transitions. [2023-01-28 07:01:18,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 881 flow [2023-01-28 07:01:18,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:01:18,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:01:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 377 transitions. [2023-01-28 07:01:18,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424460431654676 [2023-01-28 07:01:18,563 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 377 transitions. [2023-01-28 07:01:18,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 377 transitions. [2023-01-28 07:01:18,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:18,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 377 transitions. [2023-01-28 07:01:18,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,565 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,565 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 549 flow. Second operand 5 states and 377 transitions. [2023-01-28 07:01:18,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 881 flow [2023-01-28 07:01:18,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 73 transitions, 877 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-28 07:01:18,576 INFO L231 Difference]: Finished difference. Result has 57 places, 25 transitions, 269 flow [2023-01-28 07:01:18,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=57, PETRI_TRANSITIONS=25} [2023-01-28 07:01:18,577 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2023-01-28 07:01:18,577 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 25 transitions, 269 flow [2023-01-28 07:01:18,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:18,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:18,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:01:18,578 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:01:18,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:18,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1109219873, now seen corresponding path program 1 times [2023-01-28 07:01:18,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:18,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319890328] [2023-01-28 07:01:18,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:18,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:01:18,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:18,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319890328] [2023-01-28 07:01:18,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319890328] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:18,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:18,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:01:18,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925328111] [2023-01-28 07:01:18,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:18,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:01:18,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:18,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:01:18,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:01:18,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-28 07:01:18,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 25 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:18,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-28 07:01:18,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:18,732 INFO L130 PetriNetUnfolder]: 149/317 cut-off events. [2023-01-28 07:01:18,732 INFO L131 PetriNetUnfolder]: For 2319/2325 co-relation queries the response was YES. [2023-01-28 07:01:18,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 317 events. 149/317 cut-off events. For 2319/2325 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1460 event pairs, 32 based on Foata normal form. 13/322 useless extension candidates. Maximal degree in co-relation 1296. Up to 176 conditions per place. [2023-01-28 07:01:18,734 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 25 selfloop transitions, 4 changer transitions 18/54 dead transitions. [2023-01-28 07:01:18,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 616 flow [2023-01-28 07:01:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:01:18,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:01:18,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2023-01-28 07:01:18,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5669064748201439 [2023-01-28 07:01:18,735 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 394 transitions. [2023-01-28 07:01:18,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 394 transitions. [2023-01-28 07:01:18,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:18,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 394 transitions. [2023-01-28 07:01:18,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,737 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,737 INFO L175 Difference]: Start difference. First operand has 57 places, 25 transitions, 269 flow. Second operand 5 states and 394 transitions. [2023-01-28 07:01:18,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 616 flow [2023-01-28 07:01:18,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 392 flow, removed 21 selfloop flow, removed 18 redundant places. [2023-01-28 07:01:18,740 INFO L231 Difference]: Finished difference. Result has 46 places, 28 transitions, 187 flow [2023-01-28 07:01:18,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=187, PETRI_PLACES=46, PETRI_TRANSITIONS=28} [2023-01-28 07:01:18,740 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-01-28 07:01:18,740 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 28 transitions, 187 flow [2023-01-28 07:01:18,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:18,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:18,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 07:01:18,741 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:01:18,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:18,741 INFO L85 PathProgramCache]: Analyzing trace with hash -332577174, now seen corresponding path program 1 times [2023-01-28 07:01:18,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:18,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70833190] [2023-01-28 07:01:18,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:18,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:01:18,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:18,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70833190] [2023-01-28 07:01:18,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70833190] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:18,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:18,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:01:18,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252881443] [2023-01-28 07:01:18,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:18,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:01:18,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:18,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:01:18,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:01:18,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-28 07:01:18,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 28 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:18,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-28 07:01:18,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:18,880 INFO L130 PetriNetUnfolder]: 94/219 cut-off events. [2023-01-28 07:01:18,880 INFO L131 PetriNetUnfolder]: For 485/520 co-relation queries the response was YES. [2023-01-28 07:01:18,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 219 events. 94/219 cut-off events. For 485/520 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 927 event pairs, 12 based on Foata normal form. 24/237 useless extension candidates. Maximal degree in co-relation 860. Up to 121 conditions per place. [2023-01-28 07:01:18,881 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 25 selfloop transitions, 7 changer transitions 19/56 dead transitions. [2023-01-28 07:01:18,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 56 transitions, 451 flow [2023-01-28 07:01:18,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:01:18,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:01:18,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 471 transitions. [2023-01-28 07:01:18,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564748201438849 [2023-01-28 07:01:18,883 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 471 transitions. [2023-01-28 07:01:18,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 471 transitions. [2023-01-28 07:01:18,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:18,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 471 transitions. [2023-01-28 07:01:18,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.5) internal successors, (471), 6 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,885 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,885 INFO L175 Difference]: Start difference. First operand has 46 places, 28 transitions, 187 flow. Second operand 6 states and 471 transitions. [2023-01-28 07:01:18,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 56 transitions, 451 flow [2023-01-28 07:01:18,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 56 transitions, 445 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 07:01:18,887 INFO L231 Difference]: Finished difference. Result has 50 places, 26 transitions, 204 flow [2023-01-28 07:01:18,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=50, PETRI_TRANSITIONS=26} [2023-01-28 07:01:18,887 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-01-28 07:01:18,888 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 26 transitions, 204 flow [2023-01-28 07:01:18,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:18,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:18,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:18,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 07:01:18,888 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:01:18,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:18,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1050758185, now seen corresponding path program 1 times [2023-01-28 07:01:18,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:18,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670878710] [2023-01-28 07:01:18,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:18,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:01:19,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:19,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670878710] [2023-01-28 07:01:19,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670878710] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:19,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:19,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:01:19,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124647470] [2023-01-28 07:01:19,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:19,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:01:19,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:19,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:01:19,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:01:19,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-28 07:01:19,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 26 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:19,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:19,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-28 07:01:19,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:19,052 INFO L130 PetriNetUnfolder]: 46/121 cut-off events. [2023-01-28 07:01:19,052 INFO L131 PetriNetUnfolder]: For 422/463 co-relation queries the response was YES. [2023-01-28 07:01:19,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 121 events. 46/121 cut-off events. For 422/463 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 414 event pairs, 8 based on Foata normal form. 19/135 useless extension candidates. Maximal degree in co-relation 547. Up to 61 conditions per place. [2023-01-28 07:01:19,052 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2023-01-28 07:01:19,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 41 transitions, 357 flow [2023-01-28 07:01:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:01:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:01:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 532 transitions. [2023-01-28 07:01:19,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467625899280576 [2023-01-28 07:01:19,054 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 532 transitions. [2023-01-28 07:01:19,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 532 transitions. [2023-01-28 07:01:19,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:19,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 532 transitions. [2023-01-28 07:01:19,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:19,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:19,056 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:19,056 INFO L175 Difference]: Start difference. First operand has 50 places, 26 transitions, 204 flow. Second operand 7 states and 532 transitions. [2023-01-28 07:01:19,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 41 transitions, 357 flow [2023-01-28 07:01:19,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 276 flow, removed 18 selfloop flow, removed 9 redundant places. [2023-01-28 07:01:19,058 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-01-28 07:01:19,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-01-28 07:01:19,058 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-01-28 07:01:19,058 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-01-28 07:01:19,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:19,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 07:01:19,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 07:01:19,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 07:01:19,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 07:01:19,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 07:01:19,061 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:19,063 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:01:19,063 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:01:19,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:01:19 BasicIcfg [2023-01-28 07:01:19,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:01:19,066 INFO L158 Benchmark]: Toolchain (without parser) took 5070.75ms. Allocated memory was 572.5MB in the beginning and 687.9MB in the end (delta: 115.3MB). Free memory was 518.2MB in the beginning and 409.2MB in the end (delta: 109.1MB). Peak memory consumption was 226.4MB. Max. memory is 16.0GB. [2023-01-28 07:01:19,066 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 343.9MB. Free memory is still 289.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:01:19,066 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.26ms. Allocated memory is still 572.5MB. Free memory was 518.2MB in the beginning and 498.2MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 07:01:19,066 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.79ms. Allocated memory is still 572.5MB. Free memory was 498.2MB in the beginning and 496.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:01:19,066 INFO L158 Benchmark]: Boogie Preprocessor took 31.02ms. Allocated memory is still 572.5MB. Free memory was 496.1MB in the beginning and 494.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:01:19,066 INFO L158 Benchmark]: RCFGBuilder took 398.77ms. Allocated memory is still 572.5MB. Free memory was 494.7MB in the beginning and 480.5MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 07:01:19,067 INFO L158 Benchmark]: TraceAbstraction took 4265.69ms. Allocated memory was 572.5MB in the beginning and 687.9MB in the end (delta: 115.3MB). Free memory was 480.0MB in the beginning and 409.2MB in the end (delta: 70.9MB). Peak memory consumption was 188.6MB. Max. memory is 16.0GB. [2023-01-28 07:01:19,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 343.9MB. Free memory is still 289.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 327.26ms. Allocated memory is still 572.5MB. Free memory was 518.2MB in the beginning and 498.2MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.79ms. Allocated memory is still 572.5MB. Free memory was 498.2MB in the beginning and 496.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.02ms. Allocated memory is still 572.5MB. Free memory was 496.1MB in the beginning and 494.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 398.77ms. Allocated memory is still 572.5MB. Free memory was 494.7MB in the beginning and 480.5MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4265.69ms. Allocated memory was 572.5MB in the beginning and 687.9MB in the end (delta: 115.3MB). Free memory was 480.0MB in the beginning and 409.2MB in the end (delta: 70.9MB). Peak memory consumption was 188.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1928 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1242, independent: 1164, independent conditional: 0, independent unconditional: 1164, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 575, independent: 558, independent conditional: 0, independent unconditional: 558, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1242, independent: 606, independent conditional: 0, independent unconditional: 606, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 575, unknown conditional: 0, unknown unconditional: 575] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.1s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 169 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 169 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 451 IncrementalHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 21 mSDtfsCounter, 451 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=549occurred in iteration=6, InterpolantAutomatonStates: 46, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 401 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 07:01:19,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...