/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/safe005_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:00:26,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:00:26,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:00:26,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:00:26,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:00:26,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:00:26,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:00:26,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:00:26,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:00:26,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:00:26,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:00:26,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:00:26,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:00:26,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:00:26,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:00:26,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:00:26,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:00:26,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:00:26,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:00:26,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:00:26,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:00:26,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:00:26,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:00:26,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:00:26,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 07:00:26,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:00:26,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:00:26,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:00:26,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:00:26,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:00:26,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:00:26,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:00:26,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:00:26,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:00:26,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:00:26,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:00:26,448 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 07:00:26,471 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:00:26,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:00:26,472 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:00:26,472 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:00:26,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:00:26,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:00:26,472 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:00:26,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:00:26,473 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:00:26,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:00:26,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:00:26,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:00:26,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:00:26,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:00:26,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:00:26,473 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:00:26,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:00:26,473 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:00:26,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:00:26,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:00:26,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:00:26,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:00:26,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:00:26,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:00:26,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:00:26,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:00:26,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:00:26,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:00:26,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:00:26,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:00:26,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:00:26,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:00:26,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:00:26,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:00:26,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:00:26,684 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:00:26,684 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:00:26,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2023-01-28 07:00:27,563 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:00:27,707 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:00:27,708 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2023-01-28 07:00:27,716 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/184870f5e/c4b1b7935a3145daad067885b4c3b165/FLAG56624178c [2023-01-28 07:00:27,726 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/184870f5e/c4b1b7935a3145daad067885b4c3b165 [2023-01-28 07:00:27,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:00:27,729 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:00:27,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:00:27,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:00:27,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:00:27,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:00:27" (1/1) ... [2023-01-28 07:00:27,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7706850c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:27, skipping insertion in model container [2023-01-28 07:00:27,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:00:27" (1/1) ... [2023-01-28 07:00:27,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:00:27,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:00:27,894 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/safe005_tso.i[945,958] [2023-01-28 07:00:28,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:00:28,022 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:00:28,033 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/safe005_tso.i[945,958] [2023-01-28 07:00:28,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:00:28,077 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:00:28,077 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:00:28,082 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:00:28,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:28 WrapperNode [2023-01-28 07:00:28,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:00:28,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:00:28,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:00:28,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:00:28,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:28" (1/1) ... [2023-01-28 07:00:28,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:28" (1/1) ... [2023-01-28 07:00:28,113 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-01-28 07:00:28,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:00:28,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:00:28,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:00:28,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:00:28,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:28" (1/1) ... [2023-01-28 07:00:28,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:28" (1/1) ... [2023-01-28 07:00:28,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:28" (1/1) ... [2023-01-28 07:00:28,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:28" (1/1) ... [2023-01-28 07:00:28,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:28" (1/1) ... [2023-01-28 07:00:28,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:28" (1/1) ... [2023-01-28 07:00:28,126 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:28" (1/1) ... [2023-01-28 07:00:28,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:28" (1/1) ... [2023-01-28 07:00:28,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:00:28,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:00:28,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:00:28,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:00:28,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:28" (1/1) ... [2023-01-28 07:00:28,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:00:28,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:00:28,162 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 07:00:28,166 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 07:00:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:00:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:00:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:00:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:00:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:00:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 07:00:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 07:00:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 07:00:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 07:00:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 07:00:28,188 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 07:00:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:00:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:00:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:00:28,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:00:28,189 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 07:00:28,310 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:00:28,316 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:00:28,420 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:00:28,425 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:00:28,425 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:00:28,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:00:28 BoogieIcfgContainer [2023-01-28 07:00:28,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:00:28,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:00:28,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:00:28,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:00:28,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:00:27" (1/3) ... [2023-01-28 07:00:28,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6259c4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:00:28, skipping insertion in model container [2023-01-28 07:00:28,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:00:28" (2/3) ... [2023-01-28 07:00:28,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6259c4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:00:28, skipping insertion in model container [2023-01-28 07:00:28,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:00:28" (3/3) ... [2023-01-28 07:00:28,432 INFO L112 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2023-01-28 07:00:28,443 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:00:28,444 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 07:00:28,444 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:00:28,482 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:00:28,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-01-28 07:00:28,546 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2023-01-28 07:00:28,546 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:00:28,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-01-28 07:00:28,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-01-28 07:00:28,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-01-28 07:00:28,557 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:00:28,564 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-01-28 07:00:28,565 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-01-28 07:00:28,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-01-28 07:00:28,588 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2023-01-28 07:00:28,588 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:00:28,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-01-28 07:00:28,590 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-28 07:00:30,043 INFO L134 LiptonReduction]: Checked pairs total: 2098 [2023-01-28 07:00:30,043 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-01-28 07:00:30,053 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:00:30,057 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;@5cdd73d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:00:30,057 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 07:00:30,060 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-01-28 07:00:30,060 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:00:30,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:30,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:30,060 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 07:00:30,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:30,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1331089238, now seen corresponding path program 1 times [2023-01-28 07:00:30,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:30,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003355908] [2023-01-28 07:00:30,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:30,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:30,436 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 07:00:30,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:30,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003355908] [2023-01-28 07:00:30,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003355908] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:30,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:30,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:00:30,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339804728] [2023-01-28 07:00:30,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:30,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:00:30,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:30,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:00:30,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:00:30,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 143 [2023-01-28 07:00:30,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:30,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:30,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 143 [2023-01-28 07:00:30,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:30,560 INFO L130 PetriNetUnfolder]: 143/265 cut-off events. [2023-01-28 07:00:30,560 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 07:00:30,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 265 events. 143/265 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1077 event pairs, 53 based on Foata normal form. 9/270 useless extension candidates. Maximal degree in co-relation 525. Up to 154 conditions per place. [2023-01-28 07:00:30,565 INFO L137 encePairwiseOnDemand]: 139/143 looper letters, 17 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-01-28 07:00:30,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 91 flow [2023-01-28 07:00:30,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:00:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:00:30,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2023-01-28 07:00:30,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5827505827505828 [2023-01-28 07:00:30,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 250 transitions. [2023-01-28 07:00:30,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 250 transitions. [2023-01-28 07:00:30,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:30,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 250 transitions. [2023-01-28 07:00:30,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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 07:00:30,586 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 07:00:30,587 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 07:00:30,588 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 250 transitions. [2023-01-28 07:00:30,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 91 flow [2023-01-28 07:00:30,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 88 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:00:30,591 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2023-01-28 07:00:30,592 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-01-28 07:00:30,595 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-01-28 07:00:30,595 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2023-01-28 07:00:30,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:30,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:30,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:30,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:00:30,596 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 07:00:30,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:30,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1685907729, now seen corresponding path program 1 times [2023-01-28 07:00:30,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:30,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444310185] [2023-01-28 07:00:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:30,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:30,806 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 07:00:30,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:30,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444310185] [2023-01-28 07:00:30,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444310185] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:30,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:30,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:00:30,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88750012] [2023-01-28 07:00:30,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:30,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:00:30,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:30,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:00:30,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:00:30,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-01-28 07:00:30,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:30,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:30,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-01-28 07:00:30,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:30,947 INFO L130 PetriNetUnfolder]: 531/862 cut-off events. [2023-01-28 07:00:30,947 INFO L131 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2023-01-28 07:00:30,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1907 conditions, 862 events. 531/862 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3831 event pairs, 39 based on Foata normal form. 48/910 useless extension candidates. Maximal degree in co-relation 1896. Up to 421 conditions per place. [2023-01-28 07:00:30,954 INFO L137 encePairwiseOnDemand]: 136/143 looper letters, 31 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2023-01-28 07:00:30,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 182 flow [2023-01-28 07:00:30,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:00:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:00:30,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2023-01-28 07:00:30,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5541958041958042 [2023-01-28 07:00:30,958 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 317 transitions. [2023-01-28 07:00:30,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 317 transitions. [2023-01-28 07:00:30,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:30,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 317 transitions. [2023-01-28 07:00:30,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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 07:00:30,962 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 07:00:30,963 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 07:00:30,963 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 317 transitions. [2023-01-28 07:00:30,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 182 flow [2023-01-28 07:00:30,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:00:30,964 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 101 flow [2023-01-28 07:00:30,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2023-01-28 07:00:30,965 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-01-28 07:00:30,965 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 101 flow [2023-01-28 07:00:30,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:30,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:30,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:30,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:00:30,966 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 07:00:30,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:30,968 INFO L85 PathProgramCache]: Analyzing trace with hash -724801001, now seen corresponding path program 1 times [2023-01-28 07:00:30,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:30,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401732561] [2023-01-28 07:00:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:30,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:31,127 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 07:00:31,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:31,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401732561] [2023-01-28 07:00:31,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401732561] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:31,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:31,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:00:31,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394769087] [2023-01-28 07:00:31,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:31,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:00:31,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:31,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:00:31,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:00:31,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-01-28 07:00:31,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 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 07:00:31,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:31,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-01-28 07:00:31,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:31,251 INFO L130 PetriNetUnfolder]: 702/1153 cut-off events. [2023-01-28 07:00:31,251 INFO L131 PetriNetUnfolder]: For 712/712 co-relation queries the response was YES. [2023-01-28 07:00:31,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3160 conditions, 1153 events. 702/1153 cut-off events. For 712/712 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5558 event pairs, 90 based on Foata normal form. 36/1189 useless extension candidates. Maximal degree in co-relation 3146. Up to 576 conditions per place. [2023-01-28 07:00:31,254 INFO L137 encePairwiseOnDemand]: 136/143 looper letters, 30 selfloop transitions, 9 changer transitions 10/49 dead transitions. [2023-01-28 07:00:31,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 49 transitions, 282 flow [2023-01-28 07:00:31,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:00:31,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:00:31,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 391 transitions. [2023-01-28 07:00:31,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468531468531469 [2023-01-28 07:00:31,256 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 391 transitions. [2023-01-28 07:00:31,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 391 transitions. [2023-01-28 07:00:31,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:31,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 391 transitions. [2023-01-28 07:00:31,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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 07:00:31,258 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 07:00:31,258 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 07:00:31,258 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 101 flow. Second operand 5 states and 391 transitions. [2023-01-28 07:00:31,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 49 transitions, 282 flow [2023-01-28 07:00:31,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 49 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:00:31,260 INFO L231 Difference]: Finished difference. Result has 38 places, 25 transitions, 152 flow [2023-01-28 07:00:31,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2023-01-28 07:00:31,261 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-01-28 07:00:31,261 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 152 flow [2023-01-28 07:00:31,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 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 07:00:31,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:31,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:31,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:00:31,261 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 07:00:31,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:31,262 INFO L85 PathProgramCache]: Analyzing trace with hash -954009263, now seen corresponding path program 1 times [2023-01-28 07:00:31,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:31,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352964938] [2023-01-28 07:00:31,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:31,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:31,381 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 07:00:31,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:31,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352964938] [2023-01-28 07:00:31,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352964938] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:31,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:31,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:00:31,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017805370] [2023-01-28 07:00:31,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:31,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:00:31,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:31,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:00:31,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:00:31,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-01-28 07:00:31,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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 07:00:31,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:31,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-01-28 07:00:31,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:31,524 INFO L130 PetriNetUnfolder]: 624/1063 cut-off events. [2023-01-28 07:00:31,524 INFO L131 PetriNetUnfolder]: For 1823/1823 co-relation queries the response was YES. [2023-01-28 07:00:31,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3241 conditions, 1063 events. 624/1063 cut-off events. For 1823/1823 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5171 event pairs, 103 based on Foata normal form. 36/1099 useless extension candidates. Maximal degree in co-relation 3222. Up to 296 conditions per place. [2023-01-28 07:00:31,528 INFO L137 encePairwiseOnDemand]: 136/143 looper letters, 31 selfloop transitions, 8 changer transitions 21/60 dead transitions. [2023-01-28 07:00:31,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 406 flow [2023-01-28 07:00:31,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:00:31,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:00:31,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2023-01-28 07:00:31,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394605394605395 [2023-01-28 07:00:31,530 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2023-01-28 07:00:31,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2023-01-28 07:00:31,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:31,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2023-01-28 07:00:31,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 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 07:00:31,532 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 07:00:31,533 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 07:00:31,533 INFO L175 Difference]: Start difference. First operand has 38 places, 25 transitions, 152 flow. Second operand 7 states and 540 transitions. [2023-01-28 07:00:31,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 406 flow [2023-01-28 07:00:31,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 388 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 07:00:31,536 INFO L231 Difference]: Finished difference. Result has 44 places, 23 transitions, 147 flow [2023-01-28 07:00:31,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=147, PETRI_PLACES=44, PETRI_TRANSITIONS=23} [2023-01-28 07:00:31,537 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-01-28 07:00:31,537 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 23 transitions, 147 flow [2023-01-28 07:00:31,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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 07:00:31,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:31,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:31,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:00:31,538 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 07:00:31,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:31,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1296776372, now seen corresponding path program 1 times [2023-01-28 07:00:31,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:31,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314412031] [2023-01-28 07:00:31,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:31,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:31,617 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 07:00:31,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:31,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314412031] [2023-01-28 07:00:31,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314412031] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:31,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:31,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:00:31,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731238412] [2023-01-28 07:00:31,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:31,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:00:31,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:31,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:00:31,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:00:31,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-01-28 07:00:31,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 23 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:31,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:31,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-01-28 07:00:31,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:31,673 INFO L130 PetriNetUnfolder]: 279/496 cut-off events. [2023-01-28 07:00:31,673 INFO L131 PetriNetUnfolder]: For 974/974 co-relation queries the response was YES. [2023-01-28 07:00:31,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 496 events. 279/496 cut-off events. For 974/974 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1936 event pairs, 115 based on Foata normal form. 10/506 useless extension candidates. Maximal degree in co-relation 1516. Up to 220 conditions per place. [2023-01-28 07:00:31,675 INFO L137 encePairwiseOnDemand]: 138/143 looper letters, 23 selfloop transitions, 6 changer transitions 4/33 dead transitions. [2023-01-28 07:00:31,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 33 transitions, 256 flow [2023-01-28 07:00:31,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:00:31,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:00:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2023-01-28 07:00:31,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314685314685315 [2023-01-28 07:00:31,676 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 304 transitions. [2023-01-28 07:00:31,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 304 transitions. [2023-01-28 07:00:31,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:31,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 304 transitions. [2023-01-28 07:00:31,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 07:00:31,678 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 07:00:31,678 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 07:00:31,678 INFO L175 Difference]: Start difference. First operand has 44 places, 23 transitions, 147 flow. Second operand 4 states and 304 transitions. [2023-01-28 07:00:31,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 33 transitions, 256 flow [2023-01-28 07:00:31,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 215 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-28 07:00:31,681 INFO L231 Difference]: Finished difference. Result has 41 places, 24 transitions, 148 flow [2023-01-28 07:00:31,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=41, PETRI_TRANSITIONS=24} [2023-01-28 07:00:31,682 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-01-28 07:00:31,682 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 24 transitions, 148 flow [2023-01-28 07:00:31,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:31,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:31,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:31,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:00:31,682 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 07:00:31,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:31,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1545352258, now seen corresponding path program 1 times [2023-01-28 07:00:31,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:31,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011293043] [2023-01-28 07:00:31,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:31,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:31,766 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 07:00:31,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:31,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011293043] [2023-01-28 07:00:31,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011293043] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:31,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:31,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:00:31,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446593388] [2023-01-28 07:00:31,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:31,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:00:31,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:31,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:00:31,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:00:31,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 143 [2023-01-28 07:00:31,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 24 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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 07:00:31,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:31,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 143 [2023-01-28 07:00:31,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:31,836 INFO L130 PetriNetUnfolder]: 235/452 cut-off events. [2023-01-28 07:00:31,836 INFO L131 PetriNetUnfolder]: For 569/569 co-relation queries the response was YES. [2023-01-28 07:00:31,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1318 conditions, 452 events. 235/452 cut-off events. For 569/569 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1988 event pairs, 91 based on Foata normal form. 8/454 useless extension candidates. Maximal degree in co-relation 1298. Up to 207 conditions per place. [2023-01-28 07:00:31,838 INFO L137 encePairwiseOnDemand]: 139/143 looper letters, 24 selfloop transitions, 4 changer transitions 7/37 dead transitions. [2023-01-28 07:00:31,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 246 flow [2023-01-28 07:00:31,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:00:31,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:00:31,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-01-28 07:00:31,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611888111888111 [2023-01-28 07:00:31,840 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-01-28 07:00:31,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-01-28 07:00:31,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:31,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-01-28 07:00:31,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 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 07:00:31,841 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 07:00:31,841 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 07:00:31,841 INFO L175 Difference]: Start difference. First operand has 41 places, 24 transitions, 148 flow. Second operand 4 states and 321 transitions. [2023-01-28 07:00:31,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 246 flow [2023-01-28 07:00:31,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 233 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 07:00:31,843 INFO L231 Difference]: Finished difference. Result has 42 places, 21 transitions, 114 flow [2023-01-28 07:00:31,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=42, PETRI_TRANSITIONS=21} [2023-01-28 07:00:31,844 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-01-28 07:00:31,844 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 21 transitions, 114 flow [2023-01-28 07:00:31,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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 07:00:31,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:31,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:31,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:00:31,845 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 07:00:31,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:31,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1546390138, now seen corresponding path program 2 times [2023-01-28 07:00:31,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:31,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145897840] [2023-01-28 07:00:31,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:31,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:31,945 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 07:00:31,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:31,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145897840] [2023-01-28 07:00:31,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145897840] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:31,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:31,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:00:31,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363347313] [2023-01-28 07:00:31,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:31,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:00:31,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:31,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:00:31,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:00:31,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 143 [2023-01-28 07:00:31,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 21 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 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 07:00:31,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:31,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 143 [2023-01-28 07:00:31,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:32,012 INFO L130 PetriNetUnfolder]: 213/394 cut-off events. [2023-01-28 07:00:32,012 INFO L131 PetriNetUnfolder]: For 488/488 co-relation queries the response was YES. [2023-01-28 07:00:32,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 394 events. 213/394 cut-off events. For 488/488 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1511 event pairs, 64 based on Foata normal form. 16/410 useless extension candidates. Maximal degree in co-relation 1112. Up to 297 conditions per place. [2023-01-28 07:00:32,014 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 19 selfloop transitions, 4 changer transitions 16/39 dead transitions. [2023-01-28 07:00:32,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 246 flow [2023-01-28 07:00:32,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:00:32,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:00:32,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 373 transitions. [2023-01-28 07:00:32,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216783216783217 [2023-01-28 07:00:32,015 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 373 transitions. [2023-01-28 07:00:32,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 373 transitions. [2023-01-28 07:00:32,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:32,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 373 transitions. [2023-01-28 07:00:32,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 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 07:00:32,018 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 07:00:32,018 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 07:00:32,019 INFO L175 Difference]: Start difference. First operand has 42 places, 21 transitions, 114 flow. Second operand 5 states and 373 transitions. [2023-01-28 07:00:32,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 246 flow [2023-01-28 07:00:32,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 214 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-01-28 07:00:32,021 INFO L231 Difference]: Finished difference. Result has 37 places, 17 transitions, 77 flow [2023-01-28 07:00:32,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=77, PETRI_PLACES=37, PETRI_TRANSITIONS=17} [2023-01-28 07:00:32,021 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-01-28 07:00:32,022 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 17 transitions, 77 flow [2023-01-28 07:00:32,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 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 07:00:32,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:32,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:32,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:00:32,022 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 07:00:32,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:32,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2020347454, now seen corresponding path program 1 times [2023-01-28 07:00:32,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:32,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149613212] [2023-01-28 07:00:32,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:32,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:32,125 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 07:00:32,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:32,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149613212] [2023-01-28 07:00:32,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149613212] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:32,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:32,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:00:32,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376455423] [2023-01-28 07:00:32,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:32,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:00:32,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:32,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:00:32,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:00:32,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-01-28 07:00:32,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 17 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 07:00:32,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:32,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-01-28 07:00:32,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:32,154 INFO L130 PetriNetUnfolder]: 33/81 cut-off events. [2023-01-28 07:00:32,154 INFO L131 PetriNetUnfolder]: For 86/90 co-relation queries the response was YES. [2023-01-28 07:00:32,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 81 events. 33/81 cut-off events. For 86/90 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 198 event pairs, 11 based on Foata normal form. 4/83 useless extension candidates. Maximal degree in co-relation 217. Up to 62 conditions per place. [2023-01-28 07:00:32,154 INFO L137 encePairwiseOnDemand]: 138/143 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2023-01-28 07:00:32,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 24 transitions, 145 flow [2023-01-28 07:00:32,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:00:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:00:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-01-28 07:00:32,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5687645687645687 [2023-01-28 07:00:32,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-01-28 07:00:32,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-01-28 07:00:32,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:32,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-01-28 07:00:32,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 07:00:32,157 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 07:00:32,157 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 07:00:32,157 INFO L175 Difference]: Start difference. First operand has 37 places, 17 transitions, 77 flow. Second operand 3 states and 244 transitions. [2023-01-28 07:00:32,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 24 transitions, 145 flow [2023-01-28 07:00:32,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 113 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-01-28 07:00:32,158 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 73 flow [2023-01-28 07:00:32,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, 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=73, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-01-28 07:00:32,160 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-01-28 07:00:32,160 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 73 flow [2023-01-28 07:00:32,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 07:00:32,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:32,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:32,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 07:00:32,161 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:00:32,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:32,161 INFO L85 PathProgramCache]: Analyzing trace with hash 659536286, now seen corresponding path program 1 times [2023-01-28 07:00:32,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:32,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280540542] [2023-01-28 07:00:32,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:32,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:32,280 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 07:00:32,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:32,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280540542] [2023-01-28 07:00:32,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280540542] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:32,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:32,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:00:32,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105070254] [2023-01-28 07:00:32,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:32,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:00:32,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:32,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:00:32,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:00:32,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-01-28 07:00:32,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 07:00:32,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:32,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-01-28 07:00:32,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:32,305 INFO L130 PetriNetUnfolder]: 16/53 cut-off events. [2023-01-28 07:00:32,305 INFO L131 PetriNetUnfolder]: For 21/26 co-relation queries the response was YES. [2023-01-28 07:00:32,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 53 events. 16/53 cut-off events. For 21/26 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 3 based on Foata normal form. 7/59 useless extension candidates. Maximal degree in co-relation 151. Up to 26 conditions per place. [2023-01-28 07:00:32,306 INFO L137 encePairwiseOnDemand]: 138/143 looper letters, 16 selfloop transitions, 5 changer transitions 3/27 dead transitions. [2023-01-28 07:00:32,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 150 flow [2023-01-28 07:00:32,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:00:32,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:00:32,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-01-28 07:00:32,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611888111888111 [2023-01-28 07:00:32,309 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-01-28 07:00:32,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-01-28 07:00:32,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:32,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-01-28 07:00:32,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 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 07:00:32,311 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 07:00:32,311 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 07:00:32,311 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 73 flow. Second operand 4 states and 321 transitions. [2023-01-28 07:00:32,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 150 flow [2023-01-28 07:00:32,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 143 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 07:00:32,312 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 84 flow [2023-01-28 07:00:32,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-01-28 07:00:32,312 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-01-28 07:00:32,313 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 84 flow [2023-01-28 07:00:32,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 07:00:32,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:00:32,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:32,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 07:00:32,313 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:00:32,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:00:32,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1416706244, now seen corresponding path program 1 times [2023-01-28 07:00:32,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:00:32,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176060621] [2023-01-28 07:00:32,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:00:32,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:00:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:00:32,448 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 07:00:32,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:00:32,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176060621] [2023-01-28 07:00:32,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176060621] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:00:32,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:00:32,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:00:32,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992153319] [2023-01-28 07:00:32,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:00:32,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:00:32,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:00:32,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:00:32,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:00:32,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-01-28 07:00:32,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:32,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:00:32,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-01-28 07:00:32,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:00:32,469 INFO L130 PetriNetUnfolder]: 10/36 cut-off events. [2023-01-28 07:00:32,469 INFO L131 PetriNetUnfolder]: For 50/57 co-relation queries the response was YES. [2023-01-28 07:00:32,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 36 events. 10/36 cut-off events. For 50/57 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 2 based on Foata normal form. 6/41 useless extension candidates. Maximal degree in co-relation 113. Up to 14 conditions per place. [2023-01-28 07:00:32,470 INFO L137 encePairwiseOnDemand]: 138/143 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2023-01-28 07:00:32,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 23 transitions, 137 flow [2023-01-28 07:00:32,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:00:32,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:00:32,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 391 transitions. [2023-01-28 07:00:32,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468531468531469 [2023-01-28 07:00:32,471 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 391 transitions. [2023-01-28 07:00:32,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 391 transitions. [2023-01-28 07:00:32,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:00:32,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 391 transitions. [2023-01-28 07:00:32,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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 07:00:32,473 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 07:00:32,473 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 07:00:32,473 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 84 flow. Second operand 5 states and 391 transitions. [2023-01-28 07:00:32,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 23 transitions, 137 flow [2023-01-28 07:00:32,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 23 transitions, 122 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 07:00:32,474 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2023-01-28 07:00:32,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2023-01-28 07:00:32,475 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-01-28 07:00:32,475 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2023-01-28 07:00:32,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:00:32,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 07:00:32,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 07:00:32,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 07:00:32,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 07:00:32,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 07:00:32,478 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:00:32,481 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:00:32,481 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:00:32,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:00:32 BasicIcfg [2023-01-28 07:00:32,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:00:32,484 INFO L158 Benchmark]: Toolchain (without parser) took 4754.80ms. Allocated memory was 348.1MB in the beginning and 419.4MB in the end (delta: 71.3MB). Free memory was 307.0MB in the beginning and 152.0MB in the end (delta: 155.0MB). Peak memory consumption was 226.9MB. Max. memory is 16.0GB. [2023-01-28 07:00:32,484 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 212.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:00:32,484 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.90ms. Allocated memory is still 348.1MB. Free memory was 306.7MB in the beginning and 286.6MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 07:00:32,484 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.81ms. Allocated memory is still 348.1MB. Free memory was 286.6MB in the beginning and 284.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:00:32,484 INFO L158 Benchmark]: Boogie Preprocessor took 15.14ms. Allocated memory is still 348.1MB. Free memory was 284.5MB in the beginning and 283.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:00:32,485 INFO L158 Benchmark]: RCFGBuilder took 297.39ms. Allocated memory is still 348.1MB. Free memory was 283.1MB in the beginning and 269.1MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 07:00:32,485 INFO L158 Benchmark]: TraceAbstraction took 4055.75ms. Allocated memory was 348.1MB in the beginning and 419.4MB in the end (delta: 71.3MB). Free memory was 268.7MB in the beginning and 152.0MB in the end (delta: 116.7MB). Peak memory consumption was 189.1MB. Max. memory is 16.0GB. [2023-01-28 07:00:32,486 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 255.9MB. Free memory is still 212.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 352.90ms. Allocated memory is still 348.1MB. Free memory was 306.7MB in the beginning and 286.6MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.81ms. Allocated memory is still 348.1MB. Free memory was 286.6MB in the beginning and 284.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 15.14ms. Allocated memory is still 348.1MB. Free memory was 284.5MB in the beginning and 283.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 297.39ms. Allocated memory is still 348.1MB. Free memory was 283.1MB in the beginning and 269.1MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4055.75ms. Allocated memory was 348.1MB in the beginning and 419.4MB in the end (delta: 71.3MB). Free memory was 268.7MB in the beginning and 152.0MB in the end (delta: 116.7MB). Peak memory consumption was 189.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 58 TotalNumberOfCompositions, 2098 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1269, independent: 1185, independent conditional: 0, independent unconditional: 1185, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 586, independent: 562, independent conditional: 0, independent unconditional: 562, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1269, independent: 623, independent conditional: 0, independent unconditional: 623, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 586, unknown conditional: 0, unknown unconditional: 586] , Statistics on independence cache: Total cache size (in pairs): 54, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, 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, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 158 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 158 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 407 IncrementalHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 18 mSDtfsCounter, 407 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=3, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 343 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 07:00:32,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...