/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/safe010_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:01:04,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:01:04,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:01:04,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 07:01:04,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:01:04,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:01:04,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:01:04,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:01:04,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:01:04,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:01:04,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:01:04,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:01:04,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:01:04,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:01:04,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:01:04,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:01:04,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 07:01:04,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:01:04,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:01:04,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:01:04,418 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 07:01:04,431 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:01:04,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:01:04,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:01:04,432 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:01:04,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:01:04,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:01:04,432 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:01:04,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:01:04,433 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:01:04,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:01:04,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:01:04,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:01:04,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:01:04,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:01:04,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:01:04,433 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:01:04,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:01:04,433 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:01:04,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:01:04,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:01:04,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:01:04,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:01:04,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:01:04,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:01:04,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:01:04,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:01:04,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:01:04,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:01:04,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:01:04,434 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:01:04,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:01:04,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:01:04,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:01:04,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:01:04,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:01:04,640 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:01:04,642 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:01:04,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.i [2023-01-28 07:01:05,577 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:01:05,806 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:01:05,806 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.i [2023-01-28 07:01:05,829 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78884ce7d/f678577c55114dd4945532b69e0991dc/FLAG6cc32b42e [2023-01-28 07:01:05,838 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78884ce7d/f678577c55114dd4945532b69e0991dc [2023-01-28 07:01:05,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:01:05,842 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:01:05,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:01:05,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:01:05,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:01:05,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:01:05" (1/1) ... [2023-01-28 07:01:05,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cfae810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:05, skipping insertion in model container [2023-01-28 07:01:05,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:01:05" (1/1) ... [2023-01-28 07:01:05,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:01:05,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:01:06,018 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/safe010_tso.i[945,958] [2023-01-28 07:01:06,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:01:06,162 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:01:06,171 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/safe010_tso.i[945,958] [2023-01-28 07:01:06,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:01:06,227 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:01:06,227 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:01:06,232 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:01:06,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:06 WrapperNode [2023-01-28 07:01:06,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:01:06,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:01:06,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:01:06,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:01:06,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:06" (1/1) ... [2023-01-28 07:01:06,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:06" (1/1) ... [2023-01-28 07:01:06,278 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-01-28 07:01:06,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:01:06,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:01:06,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:01:06,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:01:06,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:06" (1/1) ... [2023-01-28 07:01:06,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:06" (1/1) ... [2023-01-28 07:01:06,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:06" (1/1) ... [2023-01-28 07:01:06,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:06" (1/1) ... [2023-01-28 07:01:06,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:06" (1/1) ... [2023-01-28 07:01:06,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:06" (1/1) ... [2023-01-28 07:01:06,309 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:06" (1/1) ... [2023-01-28 07:01:06,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:06" (1/1) ... [2023-01-28 07:01:06,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:01:06,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:01:06,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:01:06,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:01:06,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:06" (1/1) ... [2023-01-28 07:01:06,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:01:06,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:01:06,341 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 07:01:06,358 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 07:01:06,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:01:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:01:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:01:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:01:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:01:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 07:01:06,373 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 07:01:06,374 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 07:01:06,374 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 07:01:06,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:01:06,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:01:06,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:01:06,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:01:06,376 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 07:01:06,522 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:01:06,524 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:01:06,668 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:01:06,672 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:01:06,672 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:01:06,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:01:06 BoogieIcfgContainer [2023-01-28 07:01:06,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:01:06,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:01:06,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:01:06,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:01:06,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:01:05" (1/3) ... [2023-01-28 07:01:06,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260cdf68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:01:06, skipping insertion in model container [2023-01-28 07:01:06,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:06" (2/3) ... [2023-01-28 07:01:06,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260cdf68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:01:06, skipping insertion in model container [2023-01-28 07:01:06,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:01:06" (3/3) ... [2023-01-28 07:01:06,682 INFO L112 eAbstractionObserver]: Analyzing ICFG safe010_tso.i [2023-01-28 07:01:06,694 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:01:06,694 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 07:01:06,694 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:01:06,732 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:01:06,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 144 flow [2023-01-28 07:01:06,781 INFO L130 PetriNetUnfolder]: 2/65 cut-off events. [2023-01-28 07:01:06,781 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:01:06,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-01-28 07:01:06,784 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 144 flow [2023-01-28 07:01:06,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 55 transitions, 116 flow [2023-01-28 07:01:06,789 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:01:06,794 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 55 transitions, 116 flow [2023-01-28 07:01:06,796 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 55 transitions, 116 flow [2023-01-28 07:01:06,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 55 transitions, 116 flow [2023-01-28 07:01:06,808 INFO L130 PetriNetUnfolder]: 1/55 cut-off events. [2023-01-28 07:01:06,808 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:01:06,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-01-28 07:01:06,809 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2023-01-28 07:01:08,269 INFO L134 LiptonReduction]: Checked pairs total: 938 [2023-01-28 07:01:08,269 INFO L136 LiptonReduction]: Total number of compositions: 47 [2023-01-28 07:01:08,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:01:08,283 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;@3a1f3812, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:01:08,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 07:01:08,286 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2023-01-28 07:01:08,286 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:01:08,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:08,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-28 07:01:08,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 07:01:08,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:08,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1712912524, now seen corresponding path program 1 times [2023-01-28 07:01:08,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:08,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350347803] [2023-01-28 07:01:08,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:08,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:08,709 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 07:01:08,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:08,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350347803] [2023-01-28 07:01:08,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350347803] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:08,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:08,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:01:08,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331078007] [2023-01-28 07:01:08,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:08,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:01:08,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:08,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:01:08,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:01:08,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 114 [2023-01-28 07:01:08,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 07:01:08,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:08,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 114 [2023-01-28 07:01:08,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:08,789 INFO L130 PetriNetUnfolder]: 40/87 cut-off events. [2023-01-28 07:01:08,790 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 07:01:08,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 87 events. 40/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 260 event pairs, 14 based on Foata normal form. 2/89 useless extension candidates. Maximal degree in co-relation 170. Up to 74 conditions per place. [2023-01-28 07:01:08,792 INFO L137 encePairwiseOnDemand]: 110/114 looper letters, 14 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2023-01-28 07:01:08,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 18 transitions, 79 flow [2023-01-28 07:01:08,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:01:08,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:01:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2023-01-28 07:01:08,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2023-01-28 07:01:08,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2023-01-28 07:01:08,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2023-01-28 07:01:08,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:08,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2023-01-28 07:01:08,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 07:01:08,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 07:01:08,817 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 07:01:08,818 INFO L175 Difference]: Start difference. First operand has 19 places, 12 transitions, 30 flow. Second operand 3 states and 192 transitions. [2023-01-28 07:01:08,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 18 transitions, 79 flow [2023-01-28 07:01:08,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:01:08,822 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 47 flow [2023-01-28 07:01:08,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-01-28 07:01:08,826 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2023-01-28 07:01:08,827 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 47 flow [2023-01-28 07:01:08,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 07:01:08,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:08,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:08,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:01:08,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 07:01:08,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:08,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1560681388, now seen corresponding path program 1 times [2023-01-28 07:01:08,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:08,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010517027] [2023-01-28 07:01:08,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:08,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:08,988 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 07:01:08,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:08,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010517027] [2023-01-28 07:01:08,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010517027] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:08,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:08,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:01:08,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922178216] [2023-01-28 07:01:08,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:08,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:01:08,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:08,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:01:08,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:01:08,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 114 [2023-01-28 07:01:08,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 07:01:08,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:08,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 114 [2023-01-28 07:01:08,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:09,026 INFO L130 PetriNetUnfolder]: 32/73 cut-off events. [2023-01-28 07:01:09,027 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-01-28 07:01:09,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 73 events. 32/73 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 212 event pairs, 11 based on Foata normal form. 2/74 useless extension candidates. Maximal degree in co-relation 174. Up to 45 conditions per place. [2023-01-28 07:01:09,029 INFO L137 encePairwiseOnDemand]: 111/114 looper letters, 12 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2023-01-28 07:01:09,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 84 flow [2023-01-28 07:01:09,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:01:09,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:01:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2023-01-28 07:01:09,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5584795321637427 [2023-01-28 07:01:09,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 191 transitions. [2023-01-28 07:01:09,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 191 transitions. [2023-01-28 07:01:09,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:09,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 191 transitions. [2023-01-28 07:01:09,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 07:01:09,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 07:01:09,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 07:01:09,037 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 47 flow. Second operand 3 states and 191 transitions. [2023-01-28 07:01:09,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 84 flow [2023-01-28 07:01:09,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:01:09,038 INFO L231 Difference]: Finished difference. Result has 22 places, 14 transitions, 52 flow [2023-01-28 07:01:09,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2023-01-28 07:01:09,040 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-01-28 07:01:09,040 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 52 flow [2023-01-28 07:01:09,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 07:01:09,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:09,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:09,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:01:09,041 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 07:01:09,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:09,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1121780385, now seen corresponding path program 1 times [2023-01-28 07:01:09,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:09,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591610247] [2023-01-28 07:01:09,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:09,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:09,178 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 07:01:09,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:09,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591610247] [2023-01-28 07:01:09,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591610247] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:09,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:09,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:01:09,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219344725] [2023-01-28 07:01:09,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:09,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:01:09,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:09,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:01:09,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:01:09,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 114 [2023-01-28 07:01:09,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 14 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 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 07:01:09,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:09,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 114 [2023-01-28 07:01:09,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:09,226 INFO L130 PetriNetUnfolder]: 44/100 cut-off events. [2023-01-28 07:01:09,226 INFO L131 PetriNetUnfolder]: For 63/66 co-relation queries the response was YES. [2023-01-28 07:01:09,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 100 events. 44/100 cut-off events. For 63/66 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 332 event pairs, 13 based on Foata normal form. 13/110 useless extension candidates. Maximal degree in co-relation 242. Up to 34 conditions per place. [2023-01-28 07:01:09,228 INFO L137 encePairwiseOnDemand]: 110/114 looper letters, 13 selfloop transitions, 3 changer transitions 5/22 dead transitions. [2023-01-28 07:01:09,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 22 transitions, 113 flow [2023-01-28 07:01:09,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:01:09,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:01:09,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2023-01-28 07:01:09,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460526315789473 [2023-01-28 07:01:09,230 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 249 transitions. [2023-01-28 07:01:09,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 249 transitions. [2023-01-28 07:01:09,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:09,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 249 transitions. [2023-01-28 07:01:09,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 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 07:01:09,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 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 07:01:09,232 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 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 07:01:09,232 INFO L175 Difference]: Start difference. First operand has 22 places, 14 transitions, 52 flow. Second operand 4 states and 249 transitions. [2023-01-28 07:01:09,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 22 transitions, 113 flow [2023-01-28 07:01:09,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 22 transitions, 107 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:01:09,233 INFO L231 Difference]: Finished difference. Result has 25 places, 12 transitions, 54 flow [2023-01-28 07:01:09,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=25, PETRI_TRANSITIONS=12} [2023-01-28 07:01:09,234 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 6 predicate places. [2023-01-28 07:01:09,236 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 12 transitions, 54 flow [2023-01-28 07:01:09,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 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 07:01:09,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:09,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:09,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:01:09,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 07:01:09,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:09,238 INFO L85 PathProgramCache]: Analyzing trace with hash -415476583, now seen corresponding path program 1 times [2023-01-28 07:01:09,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:09,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034205463] [2023-01-28 07:01:09,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:09,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:09,329 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 07:01:09,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:09,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034205463] [2023-01-28 07:01:09,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034205463] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:09,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:09,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:01:09,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156479393] [2023-01-28 07:01:09,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:09,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:01:09,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:09,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:01:09,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:01:09,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 114 [2023-01-28 07:01:09,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 12 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 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 07:01:09,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:09,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 114 [2023-01-28 07:01:09,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:09,366 INFO L130 PetriNetUnfolder]: 16/48 cut-off events. [2023-01-28 07:01:09,366 INFO L131 PetriNetUnfolder]: For 100/103 co-relation queries the response was YES. [2023-01-28 07:01:09,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 48 events. 16/48 cut-off events. For 100/103 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 113 event pairs, 5 based on Foata normal form. 7/53 useless extension candidates. Maximal degree in co-relation 135. Up to 24 conditions per place. [2023-01-28 07:01:09,368 INFO L137 encePairwiseOnDemand]: 109/114 looper letters, 12 selfloop transitions, 3 changer transitions 8/25 dead transitions. [2023-01-28 07:01:09,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 142 flow [2023-01-28 07:01:09,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:01:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:01:09,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 305 transitions. [2023-01-28 07:01:09,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2023-01-28 07:01:09,370 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 305 transitions. [2023-01-28 07:01:09,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 305 transitions. [2023-01-28 07:01:09,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:09,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 305 transitions. [2023-01-28 07:01:09,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 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 07:01:09,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 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 07:01:09,377 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 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 07:01:09,378 INFO L175 Difference]: Start difference. First operand has 25 places, 12 transitions, 54 flow. Second operand 5 states and 305 transitions. [2023-01-28 07:01:09,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 142 flow [2023-01-28 07:01:09,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 25 transitions, 121 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-01-28 07:01:09,379 INFO L231 Difference]: Finished difference. Result has 27 places, 14 transitions, 67 flow [2023-01-28 07:01:09,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=67, PETRI_PLACES=27, PETRI_TRANSITIONS=14} [2023-01-28 07:01:09,380 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 8 predicate places. [2023-01-28 07:01:09,380 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 14 transitions, 67 flow [2023-01-28 07:01:09,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 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 07:01:09,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:09,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:09,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:01:09,382 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 07:01:09,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:09,382 INFO L85 PathProgramCache]: Analyzing trace with hash -37568623, now seen corresponding path program 1 times [2023-01-28 07:01:09,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:09,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078819891] [2023-01-28 07:01:09,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:09,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:09,507 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 07:01:09,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:09,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078819891] [2023-01-28 07:01:09,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078819891] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:09,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:09,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:01:09,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960271099] [2023-01-28 07:01:09,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:09,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:01:09,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:09,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:01:09,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:01:09,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 114 [2023-01-28 07:01:09,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 14 transitions, 67 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 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 07:01:09,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:09,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 114 [2023-01-28 07:01:09,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:09,542 INFO L130 PetriNetUnfolder]: 8/31 cut-off events. [2023-01-28 07:01:09,542 INFO L131 PetriNetUnfolder]: For 44/47 co-relation queries the response was YES. [2023-01-28 07:01:09,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 31 events. 8/31 cut-off events. For 44/47 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 2 based on Foata normal form. 5/35 useless extension candidates. Maximal degree in co-relation 97. Up to 14 conditions per place. [2023-01-28 07:01:09,543 INFO L137 encePairwiseOnDemand]: 109/114 looper letters, 10 selfloop transitions, 5 changer transitions 4/21 dead transitions. [2023-01-28 07:01:09,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 21 transitions, 135 flow [2023-01-28 07:01:09,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:01:09,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:01:09,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 357 transitions. [2023-01-28 07:01:09,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5219298245614035 [2023-01-28 07:01:09,545 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 357 transitions. [2023-01-28 07:01:09,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 357 transitions. [2023-01-28 07:01:09,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:09,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 357 transitions. [2023-01-28 07:01:09,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.5) internal successors, (357), 6 states have internal predecessors, (357), 0 states have call successors, (0), 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 07:01:09,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 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 07:01:09,547 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 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 07:01:09,547 INFO L175 Difference]: Start difference. First operand has 27 places, 14 transitions, 67 flow. Second operand 6 states and 357 transitions. [2023-01-28 07:01:09,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 21 transitions, 135 flow [2023-01-28 07:01:09,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 120 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-28 07:01:09,549 INFO L231 Difference]: Finished difference. Result has 31 places, 14 transitions, 76 flow [2023-01-28 07:01:09,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=76, PETRI_PLACES=31, PETRI_TRANSITIONS=14} [2023-01-28 07:01:09,549 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 12 predicate places. [2023-01-28 07:01:09,550 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 14 transitions, 76 flow [2023-01-28 07:01:09,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 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 07:01:09,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:09,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:09,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:01:09,550 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 07:01:09,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:09,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1744939018, now seen corresponding path program 1 times [2023-01-28 07:01:09,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:09,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011455709] [2023-01-28 07:01:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:09,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:09,623 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 07:01:09,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:09,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011455709] [2023-01-28 07:01:09,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011455709] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:09,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:09,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:01:09,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833550747] [2023-01-28 07:01:09,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:09,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:01:09,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:09,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:01:09,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:01:09,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 114 [2023-01-28 07:01:09,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 14 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 07:01:09,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:09,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 114 [2023-01-28 07:01:09,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:09,643 INFO L130 PetriNetUnfolder]: 7/26 cut-off events. [2023-01-28 07:01:09,643 INFO L131 PetriNetUnfolder]: For 45/46 co-relation queries the response was YES. [2023-01-28 07:01:09,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 26 events. 7/26 cut-off events. For 45/46 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 5 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 87. Up to 18 conditions per place. [2023-01-28 07:01:09,643 INFO L137 encePairwiseOnDemand]: 112/114 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2023-01-28 07:01:09,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 14 transitions, 97 flow [2023-01-28 07:01:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:01:09,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:01:09,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2023-01-28 07:01:09,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2023-01-28 07:01:09,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 186 transitions. [2023-01-28 07:01:09,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 186 transitions. [2023-01-28 07:01:09,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:09,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 186 transitions. [2023-01-28 07:01:09,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 07:01:09,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 07:01:09,646 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 07:01:09,646 INFO L175 Difference]: Start difference. First operand has 31 places, 14 transitions, 76 flow. Second operand 3 states and 186 transitions. [2023-01-28 07:01:09,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 14 transitions, 97 flow [2023-01-28 07:01:09,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 14 transitions, 82 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-28 07:01:09,648 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-01-28 07:01:09,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-01-28 07:01:09,650 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2023-01-28 07:01:09,650 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-01-28 07:01:09,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 07:01:09,656 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 07:01:09,656 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 07:01:09,657 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 07:01:09,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:01:09,657 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-01-28 07:01:09,660 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:01:09,660 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:01:09,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:01:09 BasicIcfg [2023-01-28 07:01:09,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:01:09,662 INFO L158 Benchmark]: Toolchain (without parser) took 3820.19ms. Allocated memory is still 633.3MB. Free memory was 589.7MB in the beginning and 527.3MB in the end (delta: 62.4MB). Peak memory consumption was 63.6MB. Max. memory is 16.0GB. [2023-01-28 07:01:09,663 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 364.9MB. Free memory is still 310.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:01:09,666 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.29ms. Allocated memory is still 633.3MB. Free memory was 589.3MB in the beginning and 569.5MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 07:01:09,667 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.17ms. Allocated memory is still 633.3MB. Free memory was 569.5MB in the beginning and 567.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:01:09,667 INFO L158 Benchmark]: Boogie Preprocessor took 31.85ms. Allocated memory is still 633.3MB. Free memory was 567.8MB in the beginning and 566.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:01:09,668 INFO L158 Benchmark]: RCFGBuilder took 362.20ms. Allocated memory is still 633.3MB. Free memory was 566.3MB in the beginning and 553.6MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 07:01:09,668 INFO L158 Benchmark]: TraceAbstraction took 2984.22ms. Allocated memory is still 633.3MB. Free memory was 552.7MB in the beginning and 527.3MB in the end (delta: 25.5MB). Peak memory consumption was 25.8MB. Max. memory is 16.0GB. [2023-01-28 07:01:09,669 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 364.9MB. Free memory is still 310.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 389.29ms. Allocated memory is still 633.3MB. Free memory was 589.3MB in the beginning and 569.5MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.17ms. Allocated memory is still 633.3MB. Free memory was 569.5MB in the beginning and 567.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 31.85ms. Allocated memory is still 633.3MB. Free memory was 567.8MB in the beginning and 566.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 362.20ms. Allocated memory is still 633.3MB. Free memory was 566.3MB in the beginning and 553.6MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2984.22ms. Allocated memory is still 633.3MB. Free memory was 552.7MB in the beginning and 527.3MB in the end (delta: 25.5MB). Peak memory consumption was 25.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 61 PlacesBefore, 19 PlacesAfterwards, 55 TransitionsBefore, 12 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 47 TotalNumberOfCompositions, 938 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 561, independent: 506, independent conditional: 0, independent unconditional: 506, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 299, independent: 282, independent conditional: 0, independent unconditional: 282, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 561, independent: 224, independent conditional: 0, independent unconditional: 224, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 299, unknown conditional: 0, unknown unconditional: 299] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, 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 5 procedures, 82 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 146 IncrementalHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 3 mSDtfsCounter, 146 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=5, InterpolantAutomatonStates: 24, 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, 0.8s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 07:01:09,687 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...