/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 BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:45:13,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:45:13,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:45:13,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:45:13,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 00:45:13,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 00:45:13,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 00:45:13,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 00:45:13,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 00:45:13,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 00:45:13,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 00:45:13,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 00:45:13,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 00:45:13,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 00:45:13,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 00:45:13,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 00:45:13,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 00:45:13,826 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 00:45:13,846 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:45:13,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:45:13,847 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:45:13,847 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:45:13,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:45:13,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:45:13,848 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:45:13,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:45:13,848 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:45:13,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:45:13,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:45:13,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:45:13,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:45:13,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:45:13,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:45:13,850 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:45:13,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:45:13,850 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:45:13,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:45:13,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:45:13,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:45:13,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:45:13,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:45:13,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:45:13,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:45:13,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:45:13,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:45:13,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:45:13,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:45:13,851 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:45:13,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:45:13,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:45:14,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:45:14,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:45:14,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:45:14,060 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:45:14,061 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:45:14,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 00:45:15,093 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:45:15,268 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:45:15,269 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 00:45:15,279 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e05a394f4/b92e3bfd76e94620813ff6d5dfccac91/FLAG001224fd9 [2023-01-28 00:45:15,289 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e05a394f4/b92e3bfd76e94620813ff6d5dfccac91 [2023-01-28 00:45:15,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:45:15,293 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:45:15,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:45:15,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:45:15,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:45:15,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:45:15" (1/1) ... [2023-01-28 00:45:15,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4290a660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:15, skipping insertion in model container [2023-01-28 00:45:15,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:45:15" (1/1) ... [2023-01-28 00:45:15,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:45:15,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:45:15,418 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/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-28 00:45:15,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:45:15,535 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:45:15,545 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/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-28 00:45:15,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:45:15,608 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:45:15,608 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:45:15,613 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:45:15,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:15 WrapperNode [2023-01-28 00:45:15,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:45:15,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:45:15,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:45:15,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:45:15,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:15" (1/1) ... [2023-01-28 00:45:15,631 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:15" (1/1) ... [2023-01-28 00:45:15,650 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-01-28 00:45:15,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:45:15,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:45:15,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:45:15,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:45:15,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:15" (1/1) ... [2023-01-28 00:45:15,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:15" (1/1) ... [2023-01-28 00:45:15,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:15" (1/1) ... [2023-01-28 00:45:15,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:15" (1/1) ... [2023-01-28 00:45:15,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:15" (1/1) ... [2023-01-28 00:45:15,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:15" (1/1) ... [2023-01-28 00:45:15,671 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:15" (1/1) ... [2023-01-28 00:45:15,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:15" (1/1) ... [2023-01-28 00:45:15,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:45:15,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:45:15,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:45:15,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:45:15,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:15" (1/1) ... [2023-01-28 00:45:15,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:45:15,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:45:15,696 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 00:45:15,720 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 00:45:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:45:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 00:45:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:45:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:45:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:45:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 00:45:15,730 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 00:45:15,732 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 00:45:15,732 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 00:45:15,732 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 00:45:15,732 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 00:45:15,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:45:15,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 00:45:15,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:45:15,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:45:15,733 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 00:45:15,821 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:45:15,822 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:45:15,962 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:45:15,967 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:45:15,967 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:45:15,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:45:15 BoogieIcfgContainer [2023-01-28 00:45:15,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:45:15,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:45:15,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:45:15,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:45:15,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:45:15" (1/3) ... [2023-01-28 00:45:15,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296d7a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:45:15, skipping insertion in model container [2023-01-28 00:45:15,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:45:15" (2/3) ... [2023-01-28 00:45:15,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296d7a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:45:15, skipping insertion in model container [2023-01-28 00:45:15,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:45:15" (3/3) ... [2023-01-28 00:45:15,975 INFO L112 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 00:45:15,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:45:15,987 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 00:45:15,987 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:45:16,051 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 00:45:16,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-01-28 00:45:16,141 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2023-01-28 00:45:16,142 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:45:16,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-01-28 00:45:16,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-01-28 00:45:16,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-01-28 00:45:16,150 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:45:16,156 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-01-28 00:45:16,158 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-01-28 00:45:16,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-01-28 00:45:16,171 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2023-01-28 00:45:16,171 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:45:16,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-01-28 00:45:16,172 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-28 00:45:17,724 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-01-28 00:45:17,725 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-01-28 00:45:17,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:45:17,739 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;@5e77219d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:45:17,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 00:45:17,743 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-01-28 00:45:17,743 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:45:17,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:17,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:17,744 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 00:45:17,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:17,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1940031658, now seen corresponding path program 1 times [2023-01-28 00:45:17,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:17,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391746135] [2023-01-28 00:45:17,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:17,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:18,179 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 00:45:18,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:18,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391746135] [2023-01-28 00:45:18,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391746135] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:18,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:18,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:45:18,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854393682] [2023-01-28 00:45:18,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:18,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:45:18,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:18,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:45:18,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:45:18,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 00:45:18,209 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 00:45:18,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:18,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 00:45:18,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:18,320 INFO L130 PetriNetUnfolder]: 398/674 cut-off events. [2023-01-28 00:45:18,320 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-01-28 00:45:18,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 674 events. 398/674 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3179 event pairs, 144 based on Foata normal form. 31/705 useless extension candidates. Maximal degree in co-relation 1362. Up to 414 conditions per place. [2023-01-28 00:45:18,327 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-01-28 00:45:18,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 133 flow [2023-01-28 00:45:18,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:45:18,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:45:18,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-01-28 00:45:18,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2023-01-28 00:45:18,339 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-01-28 00:45:18,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-01-28 00:45:18,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:18,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-01-28 00:45:18,346 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 00:45:18,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 00:45:18,349 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 00:45:18,350 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 237 transitions. [2023-01-28 00:45:18,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 133 flow [2023-01-28 00:45:18,359 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 00:45:18,359 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-01-28 00:45:18,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, 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 00:45:18,363 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-01-28 00:45:18,363 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-01-28 00:45:18,364 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 00:45:18,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:18,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:18,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:45:18,364 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 00:45:18,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:18,367 INFO L85 PathProgramCache]: Analyzing trace with hash 11438640, now seen corresponding path program 1 times [2023-01-28 00:45:18,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:18,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313165200] [2023-01-28 00:45:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:18,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:18,563 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 00:45:18,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:18,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313165200] [2023-01-28 00:45:18,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313165200] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:18,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:18,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:45:18,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279844297] [2023-01-28 00:45:18,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:18,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:45:18,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:18,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:45:18,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:45:18,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 00:45:18,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 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 00:45:18,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:18,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 00:45:18,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:18,714 INFO L130 PetriNetUnfolder]: 372/631 cut-off events. [2023-01-28 00:45:18,715 INFO L131 PetriNetUnfolder]: For 230/230 co-relation queries the response was YES. [2023-01-28 00:45:18,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1731 conditions, 631 events. 372/631 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2954 event pairs, 53 based on Foata normal form. 10/640 useless extension candidates. Maximal degree in co-relation 1719. Up to 321 conditions per place. [2023-01-28 00:45:18,717 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 31 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2023-01-28 00:45:18,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 39 transitions, 218 flow [2023-01-28 00:45:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:45:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:45:18,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2023-01-28 00:45:18,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5514184397163121 [2023-01-28 00:45:18,719 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 311 transitions. [2023-01-28 00:45:18,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 311 transitions. [2023-01-28 00:45:18,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:18,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 311 transitions. [2023-01-28 00:45:18,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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 00:45:18,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 00:45:18,722 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 00:45:18,722 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 311 transitions. [2023-01-28 00:45:18,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 39 transitions, 218 flow [2023-01-28 00:45:18,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:45:18,724 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 122 flow [2023-01-28 00:45:18,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, 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=122, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-01-28 00:45:18,724 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-01-28 00:45:18,725 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 122 flow [2023-01-28 00:45:18,725 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 00:45:18,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:18,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:18,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:45:18,725 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 00:45:18,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:18,726 INFO L85 PathProgramCache]: Analyzing trace with hash 11438609, now seen corresponding path program 1 times [2023-01-28 00:45:18,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:18,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453088228] [2023-01-28 00:45:18,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:18,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:18,848 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 00:45:18,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:18,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453088228] [2023-01-28 00:45:18,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453088228] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:18,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:18,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:45:18,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654501661] [2023-01-28 00:45:18,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:18,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:45:18,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:18,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:45:18,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:45:18,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-01-28 00:45:18,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 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 00:45:18,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:18,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-01-28 00:45:18,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:18,967 INFO L130 PetriNetUnfolder]: 587/945 cut-off events. [2023-01-28 00:45:18,967 INFO L131 PetriNetUnfolder]: For 1018/1018 co-relation queries the response was YES. [2023-01-28 00:45:18,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2879 conditions, 945 events. 587/945 cut-off events. For 1018/1018 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4220 event pairs, 59 based on Foata normal form. 16/961 useless extension candidates. Maximal degree in co-relation 2864. Up to 307 conditions per place. [2023-01-28 00:45:18,974 INFO L137 encePairwiseOnDemand]: 133/141 looper letters, 44 selfloop transitions, 20 changer transitions 0/64 dead transitions. [2023-01-28 00:45:18,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 64 transitions, 416 flow [2023-01-28 00:45:18,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:45:18,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:45:18,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2023-01-28 00:45:18,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517730496453901 [2023-01-28 00:45:18,977 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 389 transitions. [2023-01-28 00:45:18,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 389 transitions. [2023-01-28 00:45:18,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:18,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 389 transitions. [2023-01-28 00:45:18,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 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 00:45:18,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 00:45:18,981 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 00:45:18,981 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 122 flow. Second operand 5 states and 389 transitions. [2023-01-28 00:45:18,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 64 transitions, 416 flow [2023-01-28 00:45:18,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 64 transitions, 411 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:45:18,987 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 301 flow [2023-01-28 00:45:18,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=301, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-01-28 00:45:18,988 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-01-28 00:45:18,990 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 301 flow [2023-01-28 00:45:18,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 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 00:45:18,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:18,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:18,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:45:18,990 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 00:45:18,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:18,991 INFO L85 PathProgramCache]: Analyzing trace with hash 380918055, now seen corresponding path program 1 times [2023-01-28 00:45:18,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:18,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723905442] [2023-01-28 00:45:18,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:18,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:19,116 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 00:45:19,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:19,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723905442] [2023-01-28 00:45:19,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723905442] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:19,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:19,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:45:19,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584220926] [2023-01-28 00:45:19,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:19,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:45:19,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:19,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:45:19,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:45:19,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 00:45:19,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 301 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 00:45:19,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:19,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 00:45:19,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:19,201 INFO L130 PetriNetUnfolder]: 488/816 cut-off events. [2023-01-28 00:45:19,201 INFO L131 PetriNetUnfolder]: For 2180/2204 co-relation queries the response was YES. [2023-01-28 00:45:19,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3178 conditions, 816 events. 488/816 cut-off events. For 2180/2204 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3796 event pairs, 94 based on Foata normal form. 21/835 useless extension candidates. Maximal degree in co-relation 3158. Up to 353 conditions per place. [2023-01-28 00:45:19,206 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 39 selfloop transitions, 20 changer transitions 0/61 dead transitions. [2023-01-28 00:45:19,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 61 transitions, 579 flow [2023-01-28 00:45:19,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:45:19,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:45:19,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2023-01-28 00:45:19,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5514184397163121 [2023-01-28 00:45:19,209 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 311 transitions. [2023-01-28 00:45:19,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 311 transitions. [2023-01-28 00:45:19,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:19,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 311 transitions. [2023-01-28 00:45:19,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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 00:45:19,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 00:45:19,214 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 00:45:19,214 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 301 flow. Second operand 4 states and 311 transitions. [2023-01-28 00:45:19,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 61 transitions, 579 flow [2023-01-28 00:45:19,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 61 transitions, 579 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 00:45:19,220 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 495 flow [2023-01-28 00:45:19,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=495, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2023-01-28 00:45:19,221 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2023-01-28 00:45:19,221 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 495 flow [2023-01-28 00:45:19,221 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 00:45:19,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:19,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:19,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 00:45:19,223 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 00:45:19,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:19,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1503708307, now seen corresponding path program 1 times [2023-01-28 00:45:19,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:19,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802137124] [2023-01-28 00:45:19,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:19,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:19,361 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 00:45:19,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:19,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802137124] [2023-01-28 00:45:19,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802137124] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:19,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:19,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:45:19,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655301794] [2023-01-28 00:45:19,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:19,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:45:19,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:19,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:45:19,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:45:19,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 00:45:19,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 495 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 00:45:19,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:19,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 00:45:19,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:19,462 INFO L130 PetriNetUnfolder]: 481/819 cut-off events. [2023-01-28 00:45:19,463 INFO L131 PetriNetUnfolder]: For 3827/3852 co-relation queries the response was YES. [2023-01-28 00:45:19,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3474 conditions, 819 events. 481/819 cut-off events. For 3827/3852 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3950 event pairs, 71 based on Foata normal form. 35/854 useless extension candidates. Maximal degree in co-relation 3449. Up to 375 conditions per place. [2023-01-28 00:45:19,467 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 34 selfloop transitions, 23 changer transitions 1/60 dead transitions. [2023-01-28 00:45:19,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 645 flow [2023-01-28 00:45:19,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:45:19,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:45:19,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2023-01-28 00:45:19,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5549645390070922 [2023-01-28 00:45:19,469 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2023-01-28 00:45:19,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2023-01-28 00:45:19,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:19,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2023-01-28 00:45:19,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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 00:45:19,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 00:45:19,471 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 00:45:19,471 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 495 flow. Second operand 4 states and 313 transitions. [2023-01-28 00:45:19,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 645 flow [2023-01-28 00:45:19,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 645 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 00:45:19,480 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 536 flow [2023-01-28 00:45:19,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=536, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-01-28 00:45:19,482 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-01-28 00:45:19,482 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 536 flow [2023-01-28 00:45:19,483 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 00:45:19,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:19,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:19,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 00:45:19,484 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 00:45:19,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1893045975, now seen corresponding path program 1 times [2023-01-28 00:45:19,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:19,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53280109] [2023-01-28 00:45:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:19,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:19,610 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 00:45:19,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:19,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53280109] [2023-01-28 00:45:19,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53280109] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:19,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:19,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:45:19,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310880985] [2023-01-28 00:45:19,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:19,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:45:19,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:19,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:45:19,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:45:19,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-01-28 00:45:19,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 536 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 00:45:19,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:19,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-01-28 00:45:19,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:19,728 INFO L130 PetriNetUnfolder]: 610/1019 cut-off events. [2023-01-28 00:45:19,729 INFO L131 PetriNetUnfolder]: For 6109/6109 co-relation queries the response was YES. [2023-01-28 00:45:19,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 1019 events. 610/1019 cut-off events. For 6109/6109 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4898 event pairs, 130 based on Foata normal form. 24/1043 useless extension candidates. Maximal degree in co-relation 4336. Up to 452 conditions per place. [2023-01-28 00:45:19,732 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 39 selfloop transitions, 10 changer transitions 30/79 dead transitions. [2023-01-28 00:45:19,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 931 flow [2023-01-28 00:45:19,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:45:19,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:45:19,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 383 transitions. [2023-01-28 00:45:19,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5432624113475177 [2023-01-28 00:45:19,733 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 383 transitions. [2023-01-28 00:45:19,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 383 transitions. [2023-01-28 00:45:19,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:19,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 383 transitions. [2023-01-28 00:45:19,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 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 00:45:19,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 00:45:19,735 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 00:45:19,735 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 536 flow. Second operand 5 states and 383 transitions. [2023-01-28 00:45:19,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 931 flow [2023-01-28 00:45:19,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 908 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-28 00:45:19,743 INFO L231 Difference]: Finished difference. Result has 54 places, 29 transitions, 308 flow [2023-01-28 00:45:19,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=54, PETRI_TRANSITIONS=29} [2023-01-28 00:45:19,744 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 27 predicate places. [2023-01-28 00:45:19,744 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 29 transitions, 308 flow [2023-01-28 00:45:19,744 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 00:45:19,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:19,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:19,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 00:45:19,745 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 00:45:19,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:19,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1849809243, now seen corresponding path program 1 times [2023-01-28 00:45:19,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:19,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055731965] [2023-01-28 00:45:19,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:19,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:19,831 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 00:45:19,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:19,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055731965] [2023-01-28 00:45:19,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055731965] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:19,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:19,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:45:19,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747691415] [2023-01-28 00:45:19,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:19,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:45:19,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:19,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:45:19,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:45:19,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 00:45:19,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 29 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 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 00:45:19,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:19,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 00:45:19,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:19,885 INFO L130 PetriNetUnfolder]: 230/408 cut-off events. [2023-01-28 00:45:19,886 INFO L131 PetriNetUnfolder]: For 2082/2082 co-relation queries the response was YES. [2023-01-28 00:45:19,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1778 conditions, 408 events. 230/408 cut-off events. For 2082/2082 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1556 event pairs, 58 based on Foata normal form. 12/419 useless extension candidates. Maximal degree in co-relation 1747. Up to 212 conditions per place. [2023-01-28 00:45:19,887 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 17 selfloop transitions, 4 changer transitions 22/44 dead transitions. [2023-01-28 00:45:19,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 44 transitions, 464 flow [2023-01-28 00:45:19,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:45:19,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:45:19,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 380 transitions. [2023-01-28 00:45:19,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2023-01-28 00:45:19,888 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 380 transitions. [2023-01-28 00:45:19,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 380 transitions. [2023-01-28 00:45:19,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:19,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 380 transitions. [2023-01-28 00:45:19,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 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 00:45:19,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 00:45:19,890 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 00:45:19,890 INFO L175 Difference]: Start difference. First operand has 54 places, 29 transitions, 308 flow. Second operand 5 states and 380 transitions. [2023-01-28 00:45:19,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 44 transitions, 464 flow [2023-01-28 00:45:19,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 344 flow, removed 15 selfloop flow, removed 13 redundant places. [2023-01-28 00:45:19,894 INFO L231 Difference]: Finished difference. Result has 46 places, 17 transitions, 100 flow [2023-01-28 00:45:19,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=17} [2023-01-28 00:45:19,895 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-01-28 00:45:19,895 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 17 transitions, 100 flow [2023-01-28 00:45:19,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 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 00:45:19,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:45:19,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:19,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 00:45:19,895 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 00:45:19,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:45:19,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1817634963, now seen corresponding path program 2 times [2023-01-28 00:45:19,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:45:19,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407217004] [2023-01-28 00:45:19,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:45:19,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:45:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:45:19,999 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 00:45:19,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:45:19,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407217004] [2023-01-28 00:45:19,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407217004] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:45:19,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:45:19,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:45:20,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522247851] [2023-01-28 00:45:20,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:45:20,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:45:20,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:45:20,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:45:20,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:45:20,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-01-28 00:45:20,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 17 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 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 00:45:20,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:45:20,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-01-28 00:45:20,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:45:20,023 INFO L130 PetriNetUnfolder]: 47/96 cut-off events. [2023-01-28 00:45:20,023 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2023-01-28 00:45:20,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 96 events. 47/96 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 207 event pairs, 29 based on Foata normal form. 4/100 useless extension candidates. Maximal degree in co-relation 292. Up to 82 conditions per place. [2023-01-28 00:45:20,023 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2023-01-28 00:45:20,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 17 transitions, 124 flow [2023-01-28 00:45:20,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:45:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:45:20,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions. [2023-01-28 00:45:20,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5195035460992907 [2023-01-28 00:45:20,025 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 293 transitions. [2023-01-28 00:45:20,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 293 transitions. [2023-01-28 00:45:20,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:45:20,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 293 transitions. [2023-01-28 00:45:20,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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 00:45:20,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 00:45:20,027 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 00:45:20,027 INFO L175 Difference]: Start difference. First operand has 46 places, 17 transitions, 100 flow. Second operand 4 states and 293 transitions. [2023-01-28 00:45:20,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 17 transitions, 124 flow [2023-01-28 00:45:20,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 17 transitions, 76 flow, removed 3 selfloop flow, removed 18 redundant places. [2023-01-28 00:45:20,028 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-01-28 00:45:20,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-01-28 00:45:20,030 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-01-28 00:45:20,030 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-01-28 00:45:20,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 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 00:45:20,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 00:45:20,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 00:45:20,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 00:45:20,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 00:45:20,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 00:45:20,036 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-01-28 00:45:20,039 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:45:20,039 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:45:20,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:45:20 BasicIcfg [2023-01-28 00:45:20,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:45:20,045 INFO L158 Benchmark]: Toolchain (without parser) took 4752.25ms. Allocated memory was 539.0MB in the beginning and 660.6MB in the end (delta: 121.6MB). Free memory was 486.3MB in the beginning and 374.3MB in the end (delta: 112.0MB). Peak memory consumption was 236.8MB. Max. memory is 16.0GB. [2023-01-28 00:45:20,045 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 333.4MB. Free memory was 281.3MB in the beginning and 281.2MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:45:20,045 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.47ms. Allocated memory is still 539.0MB. Free memory was 486.0MB in the beginning and 466.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 00:45:20,045 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.41ms. Allocated memory is still 539.0MB. Free memory was 466.1MB in the beginning and 463.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:45:20,045 INFO L158 Benchmark]: Boogie Preprocessor took 21.48ms. Allocated memory is still 539.0MB. Free memory was 463.9MB in the beginning and 462.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:45:20,045 INFO L158 Benchmark]: RCFGBuilder took 295.86ms. Allocated memory is still 539.0MB. Free memory was 462.6MB in the beginning and 449.0MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 00:45:20,046 INFO L158 Benchmark]: TraceAbstraction took 4073.31ms. Allocated memory was 539.0MB in the beginning and 660.6MB in the end (delta: 121.6MB). Free memory was 448.2MB in the beginning and 374.3MB in the end (delta: 73.9MB). Peak memory consumption was 196.9MB. Max. memory is 16.0GB. [2023-01-28 00:45:20,047 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 333.4MB. Free memory was 281.3MB in the beginning and 281.2MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 320.47ms. Allocated memory is still 539.0MB. Free memory was 486.0MB in the beginning and 466.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.41ms. Allocated memory is still 539.0MB. Free memory was 466.1MB in the beginning and 463.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.48ms. Allocated memory is still 539.0MB. Free memory was 463.9MB in the beginning and 462.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 295.86ms. Allocated memory is still 539.0MB. Free memory was 462.6MB in the beginning and 449.0MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 4073.31ms. Allocated memory was 539.0MB in the beginning and 660.6MB in the end (delta: 121.6MB). Free memory was 448.2MB in the beginning and 374.3MB in the end (delta: 73.9MB). Peak memory consumption was 196.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1213, independent: 1136, independent conditional: 0, independent unconditional: 1136, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 575, independent: 550, independent conditional: 0, independent unconditional: 550, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1213, independent: 586, independent conditional: 0, independent unconditional: 586, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 575, unknown conditional: 0, unknown unconditional: 575] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, 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, 108 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: 4.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 304 IncrementalHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 23 mSDtfsCounter, 304 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=536occurred in iteration=5, InterpolantAutomatonStates: 34, 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, 1.1s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 00:45:20,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...