/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:03:12,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:03:12,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:03:12,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:03:12,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:03:12,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:03:12,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:03:12,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:03:12,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:03:12,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:03:12,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:03:12,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:03:12,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:03:12,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:03:12,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:03:12,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:03:12,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:03:12,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:03:12,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:03:12,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:03:12,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:03:12,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:03:12,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:03:12,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:03:12,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 07:03:12,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:03:12,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:03:12,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:03:12,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:03:12,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:03:12,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:03:12,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:03:12,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:03:12,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:03:12,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:03:12,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:03:12,959 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 07:03:12,982 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:03:12,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:03:12,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:03:12,983 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:03:12,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:03:12,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:03:12,984 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:03:12,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:03:12,984 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:03:12,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:03:12,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:03:12,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:03:12,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:03:12,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:03:12,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:03:12,984 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:03:12,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:03:12,985 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:03:12,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:03:12,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:03:12,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:03:12,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:03:12,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:03:12,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:03:12,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:03:12,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:03:12,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:03:12,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:03:12,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:03:12,986 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:03:12,986 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:03:12,986 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:03:13,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:03:13,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:03:13,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:03:13,177 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:03:13,178 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:03:13,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.i [2023-01-28 07:03:14,070 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:03:14,284 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:03:14,285 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.i [2023-01-28 07:03:14,294 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cec5cf5e8/04332bd1220f4271905f1161a2f16648/FLAGe63b48b3b [2023-01-28 07:03:14,305 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cec5cf5e8/04332bd1220f4271905f1161a2f16648 [2023-01-28 07:03:14,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:03:14,307 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:03:14,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:03:14,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:03:14,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:03:14,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:03:14" (1/1) ... [2023-01-28 07:03:14,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab21b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:14, skipping insertion in model container [2023-01-28 07:03:14,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:03:14" (1/1) ... [2023-01-28 07:03:14,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:03:14,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:03:14,466 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/safe024_tso.i[945,958] [2023-01-28 07:03:14,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:03:14,611 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:03:14,622 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/safe024_tso.i[945,958] [2023-01-28 07:03:14,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:03:14,682 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:03:14,683 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:03:14,688 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:03:14,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:14 WrapperNode [2023-01-28 07:03:14,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:03:14,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:03:14,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:03:14,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:03:14,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:14" (1/1) ... [2023-01-28 07:03:14,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:14" (1/1) ... [2023-01-28 07:03:14,737 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-01-28 07:03:14,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:03:14,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:03:14,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:03:14,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:03:14,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:14" (1/1) ... [2023-01-28 07:03:14,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:14" (1/1) ... [2023-01-28 07:03:14,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:14" (1/1) ... [2023-01-28 07:03:14,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:14" (1/1) ... [2023-01-28 07:03:14,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:14" (1/1) ... [2023-01-28 07:03:14,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:14" (1/1) ... [2023-01-28 07:03:14,763 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:14" (1/1) ... [2023-01-28 07:03:14,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:14" (1/1) ... [2023-01-28 07:03:14,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:03:14,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:03:14,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:03:14,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:03:14,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:14" (1/1) ... [2023-01-28 07:03:14,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:03:14,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:03:14,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 07:03:14,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 07:03:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:03:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:03:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:03:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:03:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:03:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 07:03:14,828 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 07:03:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 07:03:14,828 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 07:03:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 07:03:14,829 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 07:03:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:03:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:03:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:03:14,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:03:14,830 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 07:03:14,944 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:03:14,946 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:03:15,094 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:03:15,098 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:03:15,099 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:03:15,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:03:15 BoogieIcfgContainer [2023-01-28 07:03:15,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:03:15,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:03:15,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:03:15,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:03:15,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:03:14" (1/3) ... [2023-01-28 07:03:15,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520766d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:03:15, skipping insertion in model container [2023-01-28 07:03:15,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:14" (2/3) ... [2023-01-28 07:03:15,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520766d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:03:15, skipping insertion in model container [2023-01-28 07:03:15,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:03:15" (3/3) ... [2023-01-28 07:03:15,106 INFO L112 eAbstractionObserver]: Analyzing ICFG safe024_tso.i [2023-01-28 07:03:15,121 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:03:15,121 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 07:03:15,121 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:03:15,195 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:03:15,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 187 flow [2023-01-28 07:03:15,266 INFO L130 PetriNetUnfolder]: 2/83 cut-off events. [2023-01-28 07:03:15,267 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:03:15,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-01-28 07:03:15,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 187 flow [2023-01-28 07:03:15,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 71 transitions, 151 flow [2023-01-28 07:03:15,276 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:03:15,282 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 71 transitions, 151 flow [2023-01-28 07:03:15,284 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 71 transitions, 151 flow [2023-01-28 07:03:15,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 71 transitions, 151 flow [2023-01-28 07:03:15,299 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2023-01-28 07:03:15,299 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:03:15,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-01-28 07:03:15,300 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-28 07:03:16,996 INFO L134 LiptonReduction]: Checked pairs total: 1960 [2023-01-28 07:03:16,997 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-01-28 07:03:17,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:03:17,012 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;@70d5243, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:03:17,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 07:03:17,016 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-01-28 07:03:17,016 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:03:17,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:17,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:17,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:17,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:17,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1939323800, now seen corresponding path program 1 times [2023-01-28 07:03:17,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:17,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251649302] [2023-01-28 07:03:17,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:17,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:17,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:17,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251649302] [2023-01-28 07:03:17,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251649302] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:17,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:17,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:03:17,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414308067] [2023-01-28 07:03:17,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:17,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:03:17,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:17,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:03:17,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:03:17,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-01-28 07:03:17,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:17,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:17,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-01-28 07:03:17,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:17,573 INFO L130 PetriNetUnfolder]: 289/462 cut-off events. [2023-01-28 07:03:17,573 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-01-28 07:03:17,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 961 conditions, 462 events. 289/462 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1774 event pairs, 85 based on Foata normal form. 6/466 useless extension candidates. Maximal degree in co-relation 950. Up to 407 conditions per place. [2023-01-28 07:03:17,580 INFO L137 encePairwiseOnDemand]: 139/143 looper letters, 23 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-01-28 07:03:17,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 121 flow [2023-01-28 07:03:17,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:03:17,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:03:17,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-01-28 07:03:17,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5734265734265734 [2023-01-28 07:03:17,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-01-28 07:03:17,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-01-28 07:03:17,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:17,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-01-28 07:03:17,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:17,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:17,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:17,613 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 246 transitions. [2023-01-28 07:03:17,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 121 flow [2023-01-28 07:03:17,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:03:17,616 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2023-01-28 07:03:17,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, 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=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-01-28 07:03:17,620 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-01-28 07:03:17,620 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2023-01-28 07:03:17,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:17,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:17,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:17,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:03:17,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:17,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:17,621 INFO L85 PathProgramCache]: Analyzing trace with hash 10503732, now seen corresponding path program 1 times [2023-01-28 07:03:17,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:17,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134661850] [2023-01-28 07:03:17,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:17,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:17,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:17,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134661850] [2023-01-28 07:03:17,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134661850] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:17,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:17,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:03:17,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857721036] [2023-01-28 07:03:17,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:17,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:03:17,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:17,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:03:17,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:03:17,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2023-01-28 07:03:17,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:17,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:17,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2023-01-28 07:03:17,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:17,837 INFO L130 PetriNetUnfolder]: 241/442 cut-off events. [2023-01-28 07:03:17,837 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-01-28 07:03:17,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 442 events. 241/442 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1979 event pairs, 83 based on Foata normal form. 40/481 useless extension candidates. Maximal degree in co-relation 944. Up to 138 conditions per place. [2023-01-28 07:03:17,842 INFO L137 encePairwiseOnDemand]: 139/143 looper letters, 21 selfloop transitions, 4 changer transitions 4/32 dead transitions. [2023-01-28 07:03:17,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 32 transitions, 150 flow [2023-01-28 07:03:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:03:17,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:03:17,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-01-28 07:03:17,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5751748251748252 [2023-01-28 07:03:17,850 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-01-28 07:03:17,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-01-28 07:03:17,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:17,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-01-28 07:03:17,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:17,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:17,855 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:17,855 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 4 states and 329 transitions. [2023-01-28 07:03:17,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 32 transitions, 150 flow [2023-01-28 07:03:17,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 32 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:03:17,856 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 73 flow [2023-01-28 07:03:17,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=73, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-01-28 07:03:17,859 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-01-28 07:03:17,859 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 73 flow [2023-01-28 07:03:17,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:17,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:17,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:17,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:03:17,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:17,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:17,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1896609912, now seen corresponding path program 1 times [2023-01-28 07:03:17,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:17,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542439887] [2023-01-28 07:03:17,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:17,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:18,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:18,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542439887] [2023-01-28 07:03:18,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542439887] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:18,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:18,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:03:18,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718150855] [2023-01-28 07:03:18,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:18,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:03:18,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:18,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:03:18,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:03:18,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-01-28 07:03:18,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:18,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:18,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-01-28 07:03:18,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:18,282 INFO L130 PetriNetUnfolder]: 119/232 cut-off events. [2023-01-28 07:03:18,282 INFO L131 PetriNetUnfolder]: For 200/203 co-relation queries the response was YES. [2023-01-28 07:03:18,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 232 events. 119/232 cut-off events. For 200/203 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 892 event pairs, 29 based on Foata normal form. 19/247 useless extension candidates. Maximal degree in co-relation 585. Up to 139 conditions per place. [2023-01-28 07:03:18,284 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 29 selfloop transitions, 7 changer transitions 5/45 dead transitions. [2023-01-28 07:03:18,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 241 flow [2023-01-28 07:03:18,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:03:18,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:03:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 404 transitions. [2023-01-28 07:03:18,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650349650349651 [2023-01-28 07:03:18,286 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 404 transitions. [2023-01-28 07:03:18,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 404 transitions. [2023-01-28 07:03:18,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:18,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 404 transitions. [2023-01-28 07:03:18,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:18,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:18,288 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:18,288 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 73 flow. Second operand 5 states and 404 transitions. [2023-01-28 07:03:18,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 241 flow [2023-01-28 07:03:18,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:03:18,291 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 122 flow [2023-01-28 07:03:18,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-01-28 07:03:18,292 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-01-28 07:03:18,294 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 122 flow [2023-01-28 07:03:18,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:18,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:18,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:18,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:03:18,295 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:18,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:18,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1386944140, now seen corresponding path program 1 times [2023-01-28 07:03:18,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:18,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247934107] [2023-01-28 07:03:18,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:18,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:18,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:18,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247934107] [2023-01-28 07:03:18,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247934107] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:18,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:18,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:03:18,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014299829] [2023-01-28 07:03:18,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:18,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:03:18,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:18,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:03:18,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:03:18,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-01-28 07:03:18,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:18,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:18,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-01-28 07:03:18,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:18,527 INFO L130 PetriNetUnfolder]: 98/208 cut-off events. [2023-01-28 07:03:18,527 INFO L131 PetriNetUnfolder]: For 356/387 co-relation queries the response was YES. [2023-01-28 07:03:18,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 208 events. 98/208 cut-off events. For 356/387 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 811 event pairs, 14 based on Foata normal form. 32/236 useless extension candidates. Maximal degree in co-relation 701. Up to 99 conditions per place. [2023-01-28 07:03:18,528 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 32 selfloop transitions, 13 changer transitions 8/57 dead transitions. [2023-01-28 07:03:18,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 57 transitions, 368 flow [2023-01-28 07:03:18,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:03:18,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:03:18,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 562 transitions. [2023-01-28 07:03:18,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614385614385614 [2023-01-28 07:03:18,530 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 562 transitions. [2023-01-28 07:03:18,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 562 transitions. [2023-01-28 07:03:18,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:18,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 562 transitions. [2023-01-28 07:03:18,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.28571428571429) internal successors, (562), 7 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:18,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:18,538 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:18,538 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 122 flow. Second operand 7 states and 562 transitions. [2023-01-28 07:03:18,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 57 transitions, 368 flow [2023-01-28 07:03:18,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 57 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:03:18,543 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 206 flow [2023-01-28 07:03:18,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2023-01-28 07:03:18,544 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-01-28 07:03:18,544 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 206 flow [2023-01-28 07:03:18,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:18,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:18,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:18,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:03:18,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:18,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:18,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1415012507, now seen corresponding path program 1 times [2023-01-28 07:03:18,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:18,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175538600] [2023-01-28 07:03:18,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:18,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:18,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:18,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:18,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175538600] [2023-01-28 07:03:18,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175538600] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:18,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:18,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:03:18,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246003423] [2023-01-28 07:03:18,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:18,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:03:18,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:18,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:03:18,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:03:18,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-01-28 07:03:18,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:18,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:18,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-01-28 07:03:18,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:18,760 INFO L130 PetriNetUnfolder]: 84/187 cut-off events. [2023-01-28 07:03:18,761 INFO L131 PetriNetUnfolder]: For 510/542 co-relation queries the response was YES. [2023-01-28 07:03:18,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 187 events. 84/187 cut-off events. For 510/542 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 724 event pairs, 12 based on Foata normal form. 24/207 useless extension candidates. Maximal degree in co-relation 726. Up to 86 conditions per place. [2023-01-28 07:03:18,762 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 29 selfloop transitions, 17 changer transitions 7/57 dead transitions. [2023-01-28 07:03:18,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 426 flow [2023-01-28 07:03:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 07:03:18,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 07:03:18,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 708 transitions. [2023-01-28 07:03:18,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5501165501165501 [2023-01-28 07:03:18,764 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 708 transitions. [2023-01-28 07:03:18,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 708 transitions. [2023-01-28 07:03:18,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:18,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 708 transitions. [2023-01-28 07:03:18,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.66666666666667) internal successors, (708), 9 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:18,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 143.0) internal successors, (1430), 10 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:18,769 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 143.0) internal successors, (1430), 10 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:18,769 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 206 flow. Second operand 9 states and 708 transitions. [2023-01-28 07:03:18,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 426 flow [2023-01-28 07:03:18,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 396 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-01-28 07:03:18,774 INFO L231 Difference]: Finished difference. Result has 53 places, 32 transitions, 232 flow [2023-01-28 07:03:18,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=232, PETRI_PLACES=53, PETRI_TRANSITIONS=32} [2023-01-28 07:03:18,776 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2023-01-28 07:03:18,776 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 32 transitions, 232 flow [2023-01-28 07:03:18,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:18,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:18,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:18,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:03:18,777 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:18,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:18,777 INFO L85 PathProgramCache]: Analyzing trace with hash -961641232, now seen corresponding path program 1 times [2023-01-28 07:03:18,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:18,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970462556] [2023-01-28 07:03:18,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:18,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:18,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:18,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970462556] [2023-01-28 07:03:18,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970462556] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:18,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:18,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:03:18,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551492158] [2023-01-28 07:03:18,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:18,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:03:18,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:18,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:03:18,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:03:18,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 143 [2023-01-28 07:03:18,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 32 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:18,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:18,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 143 [2023-01-28 07:03:18,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:19,021 INFO L130 PetriNetUnfolder]: 160/323 cut-off events. [2023-01-28 07:03:19,021 INFO L131 PetriNetUnfolder]: For 930/930 co-relation queries the response was YES. [2023-01-28 07:03:19,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1299 conditions, 323 events. 160/323 cut-off events. For 930/930 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1425 event pairs, 12 based on Foata normal form. 1/323 useless extension candidates. Maximal degree in co-relation 1274. Up to 182 conditions per place. [2023-01-28 07:03:19,023 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 33 selfloop transitions, 7 changer transitions 37/78 dead transitions. [2023-01-28 07:03:19,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 713 flow [2023-01-28 07:03:19,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:03:19,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:03:19,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 396 transitions. [2023-01-28 07:03:19,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5538461538461539 [2023-01-28 07:03:19,024 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 396 transitions. [2023-01-28 07:03:19,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 396 transitions. [2023-01-28 07:03:19,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:19,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 396 transitions. [2023-01-28 07:03:19,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:19,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:19,028 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:19,028 INFO L175 Difference]: Start difference. First operand has 53 places, 32 transitions, 232 flow. Second operand 5 states and 396 transitions. [2023-01-28 07:03:19,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 713 flow [2023-01-28 07:03:19,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 78 transitions, 572 flow, removed 28 selfloop flow, removed 8 redundant places. [2023-01-28 07:03:19,032 INFO L231 Difference]: Finished difference. Result has 50 places, 27 transitions, 158 flow [2023-01-28 07:03:19,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=50, PETRI_TRANSITIONS=27} [2023-01-28 07:03:19,034 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-01-28 07:03:19,034 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 27 transitions, 158 flow [2023-01-28 07:03:19,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:19,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:19,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:19,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:03:19,035 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:19,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:19,035 INFO L85 PathProgramCache]: Analyzing trace with hash -528883398, now seen corresponding path program 2 times [2023-01-28 07:03:19,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:19,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113143237] [2023-01-28 07:03:19,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:19,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:19,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:19,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:19,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113143237] [2023-01-28 07:03:19,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113143237] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:19,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:19,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:03:19,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216148511] [2023-01-28 07:03:19,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:19,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:03:19,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:19,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:03:19,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:03:19,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2023-01-28 07:03:19,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 27 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:19,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:19,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2023-01-28 07:03:19,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:19,176 INFO L130 PetriNetUnfolder]: 47/115 cut-off events. [2023-01-28 07:03:19,176 INFO L131 PetriNetUnfolder]: For 234/236 co-relation queries the response was YES. [2023-01-28 07:03:19,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 115 events. 47/115 cut-off events. For 234/236 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 362 event pairs, 7 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 406. Up to 51 conditions per place. [2023-01-28 07:03:19,177 INFO L137 encePairwiseOnDemand]: 140/143 looper letters, 24 selfloop transitions, 1 changer transitions 19/46 dead transitions. [2023-01-28 07:03:19,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 338 flow [2023-01-28 07:03:19,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:03:19,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:03:19,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-01-28 07:03:19,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5751748251748252 [2023-01-28 07:03:19,178 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-01-28 07:03:19,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-01-28 07:03:19,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:19,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-01-28 07:03:19,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:19,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:19,181 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:19,181 INFO L175 Difference]: Start difference. First operand has 50 places, 27 transitions, 158 flow. Second operand 4 states and 329 transitions. [2023-01-28 07:03:19,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 338 flow [2023-01-28 07:03:19,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 316 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-01-28 07:03:19,183 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 113 flow [2023-01-28 07:03:19,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2023-01-28 07:03:19,183 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-01-28 07:03:19,183 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 113 flow [2023-01-28 07:03:19,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:19,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:19,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:19,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:03:19,184 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:03:19,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:19,184 INFO L85 PathProgramCache]: Analyzing trace with hash 154330364, now seen corresponding path program 3 times [2023-01-28 07:03:19,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:19,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31154615] [2023-01-28 07:03:19,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:19,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:19,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:19,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:19,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31154615] [2023-01-28 07:03:19,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31154615] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:19,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:19,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:03:19,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642122769] [2023-01-28 07:03:19,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:19,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:03:19,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:19,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:03:19,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:03:19,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2023-01-28 07:03:19,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:19,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:19,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2023-01-28 07:03:19,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:03:19,307 INFO L130 PetriNetUnfolder]: 21/61 cut-off events. [2023-01-28 07:03:19,307 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2023-01-28 07:03:19,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 61 events. 21/61 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 125 event pairs, 5 based on Foata normal form. 1/62 useless extension candidates. Maximal degree in co-relation 218. Up to 27 conditions per place. [2023-01-28 07:03:19,307 INFO L137 encePairwiseOnDemand]: 140/143 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-01-28 07:03:19,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 28 transitions, 189 flow [2023-01-28 07:03:19,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:03:19,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:03:19,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2023-01-28 07:03:19,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2023-01-28 07:03:19,308 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 319 transitions. [2023-01-28 07:03:19,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 319 transitions. [2023-01-28 07:03:19,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:03:19,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 319 transitions. [2023-01-28 07:03:19,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:19,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:19,310 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:19,310 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 113 flow. Second operand 4 states and 319 transitions. [2023-01-28 07:03:19,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 28 transitions, 189 flow [2023-01-28 07:03:19,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 180 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-28 07:03:19,311 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-01-28 07:03:19,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-01-28 07:03:19,313 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-01-28 07:03:19,313 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-01-28 07:03:19,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:03:19,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 07:03:19,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 07:03:19,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 07:03:19,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 07:03:19,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 07:03:19,316 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2023-01-28 07:03:19,319 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:03:19,319 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:03:19,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:03:19 BasicIcfg [2023-01-28 07:03:19,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:03:19,325 INFO L158 Benchmark]: Toolchain (without parser) took 5017.52ms. Allocated memory was 348.1MB in the beginning and 566.2MB in the end (delta: 218.1MB). Free memory was 278.3MB in the beginning and 407.3MB in the end (delta: -129.0MB). Peak memory consumption was 92.2MB. Max. memory is 16.0GB. [2023-01-28 07:03:19,325 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 348.1MB. Free memory is still 292.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:03:19,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 380.10ms. Allocated memory is still 348.1MB. Free memory was 278.3MB in the beginning and 257.9MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 07:03:19,325 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.02ms. Allocated memory is still 348.1MB. Free memory was 257.9MB in the beginning and 255.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:03:19,325 INFO L158 Benchmark]: Boogie Preprocessor took 28.10ms. Allocated memory is still 348.1MB. Free memory was 255.7MB in the beginning and 254.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:03:19,326 INFO L158 Benchmark]: RCFGBuilder took 334.54ms. Allocated memory is still 348.1MB. Free memory was 254.2MB in the beginning and 240.0MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 07:03:19,326 INFO L158 Benchmark]: TraceAbstraction took 4222.31ms. Allocated memory was 348.1MB in the beginning and 566.2MB in the end (delta: 218.1MB). Free memory was 239.5MB in the beginning and 407.3MB in the end (delta: -167.8MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. [2023-01-28 07:03:19,327 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 348.1MB. Free memory is still 292.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 380.10ms. Allocated memory is still 348.1MB. Free memory was 278.3MB in the beginning and 257.9MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.02ms. Allocated memory is still 348.1MB. Free memory was 257.9MB in the beginning and 255.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.10ms. Allocated memory is still 348.1MB. Free memory was 255.7MB in the beginning and 254.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 334.54ms. Allocated memory is still 348.1MB. Free memory was 254.2MB in the beginning and 240.0MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4222.31ms. Allocated memory was 348.1MB in the beginning and 566.2MB in the end (delta: 218.1MB). Free memory was 239.5MB in the beginning and 407.3MB in the end (delta: -167.8MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 80 PlacesBefore, 27 PlacesAfterwards, 71 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 57 TotalNumberOfCompositions, 1960 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1093, independent: 1001, independent conditional: 0, independent unconditional: 1001, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 566, independent: 542, independent conditional: 0, independent unconditional: 542, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1093, independent: 459, independent conditional: 0, independent unconditional: 459, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 566, unknown conditional: 0, unknown unconditional: 566] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, 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, 109 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 132 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 132 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 392 IncrementalHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 6 mSDtfsCounter, 392 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=5, InterpolantAutomatonStates: 41, 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, 1.3s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 363 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 07:03:19,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...