/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 04:29:26,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 04:29:26,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 04:29:26,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 04:29:26,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 04:29:26,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 04:29:26,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 04:29:26,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 04:29:26,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 04:29:26,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 04:29:26,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 04:29:26,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 04:29:26,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 04:29:26,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 04:29:26,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 04:29:26,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 04:29:26,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 04:29:26,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 04:29:26,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 04:29:26,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 04:29:26,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 04:29:26,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 04:29:26,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 04:29:26,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 04:29:26,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 04:29:26,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 04:29:26,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 04:29:26,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 04:29:26,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 04:29:26,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 04:29:26,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 04:29:26,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 04:29:26,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 04:29:26,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 04:29:26,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 04:29:26,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 04:29:26,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 04:29:26,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 04:29:26,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 04:29:26,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 04:29:26,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 04:29:26,459 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 04:29:26,480 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 04:29:26,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 04:29:26,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 04:29:26,481 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 04:29:26,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 04:29:26,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 04:29:26,482 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 04:29:26,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 04:29:26,482 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 04:29:26,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 04:29:26,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 04:29:26,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 04:29:26,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 04:29:26,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 04:29:26,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 04:29:26,483 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 04:29:26,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 04:29:26,483 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 04:29:26,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 04:29:26,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 04:29:26,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 04:29:26,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 04:29:26,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 04:29:26,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:29:26,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 04:29:26,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 04:29:26,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 04:29:26,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 04:29:26,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 04:29:26,485 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 04:29:26,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 04:29:26,485 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 04:29:26,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 04:29:26,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 04:29:26,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 04:29:26,661 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 04:29:26,661 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 04:29:26,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2023-01-28 04:29:27,640 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 04:29:27,853 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 04:29:27,854 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2023-01-28 04:29:27,860 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ea3f90a/c6fb8dacb04f49779667e7a815fc3548/FLAGcc052330d [2023-01-28 04:29:28,259 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ea3f90a/c6fb8dacb04f49779667e7a815fc3548 [2023-01-28 04:29:28,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 04:29:28,261 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 04:29:28,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 04:29:28,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 04:29:28,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 04:29:28,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:29:28" (1/1) ... [2023-01-28 04:29:28,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15672c9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:29:28, skipping insertion in model container [2023-01-28 04:29:28,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:29:28" (1/1) ... [2023-01-28 04:29:28,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 04:29:28,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 04:29:28,424 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2023-01-28 04:29:28,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:29:28,436 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 04:29:28,456 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2023-01-28 04:29:28,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:29:28,470 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:29:28,470 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:29:28,475 INFO L208 MainTranslator]: Completed translation [2023-01-28 04:29:28,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:29:28 WrapperNode [2023-01-28 04:29:28,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 04:29:28,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 04:29:28,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 04:29:28,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 04:29:28,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:29:28" (1/1) ... [2023-01-28 04:29:28,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:29:28" (1/1) ... [2023-01-28 04:29:28,520 INFO L138 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 311 [2023-01-28 04:29:28,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 04:29:28,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 04:29:28,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 04:29:28,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 04:29:28,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:29:28" (1/1) ... [2023-01-28 04:29:28,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:29:28" (1/1) ... [2023-01-28 04:29:28,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:29:28" (1/1) ... [2023-01-28 04:29:28,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:29:28" (1/1) ... [2023-01-28 04:29:28,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:29:28" (1/1) ... [2023-01-28 04:29:28,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:29:28" (1/1) ... [2023-01-28 04:29:28,553 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:29:28" (1/1) ... [2023-01-28 04:29:28,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:29:28" (1/1) ... [2023-01-28 04:29:28,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 04:29:28,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 04:29:28,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 04:29:28,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 04:29:28,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:29:28" (1/1) ... [2023-01-28 04:29:28,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:29:28,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:29:28,578 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 04:29:28,580 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 04:29:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 04:29:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 04:29:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 04:29:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 04:29:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 04:29:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 04:29:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 04:29:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 04:29:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 04:29:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 04:29:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 04:29:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 04:29:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 04:29:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 04:29:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 04:29:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 04:29:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 04:29:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 04:29:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 04:29:28,613 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 04:29:28,749 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 04:29:28,750 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 04:29:29,083 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 04:29:29,193 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 04:29:29,193 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 04:29:29,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:29:29 BoogieIcfgContainer [2023-01-28 04:29:29,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 04:29:29,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 04:29:29,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 04:29:29,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 04:29:29,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 04:29:28" (1/3) ... [2023-01-28 04:29:29,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55df9f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:29:29, skipping insertion in model container [2023-01-28 04:29:29,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:29:28" (2/3) ... [2023-01-28 04:29:29,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55df9f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:29:29, skipping insertion in model container [2023-01-28 04:29:29,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:29:29" (3/3) ... [2023-01-28 04:29:29,202 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2023-01-28 04:29:29,217 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 04:29:29,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 04:29:29,218 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 04:29:29,302 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 04:29:29,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 220 transitions, 472 flow [2023-01-28 04:29:29,383 INFO L130 PetriNetUnfolder]: 18/216 cut-off events. [2023-01-28 04:29:29,383 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 04:29:29,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 216 events. 18/216 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 114 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 179. Up to 2 conditions per place. [2023-01-28 04:29:29,388 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 220 transitions, 472 flow [2023-01-28 04:29:29,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 204 transitions, 432 flow [2023-01-28 04:29:29,394 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 04:29:29,400 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 204 transitions, 432 flow [2023-01-28 04:29:29,402 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 204 transitions, 432 flow [2023-01-28 04:29:29,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 204 transitions, 432 flow [2023-01-28 04:29:29,427 INFO L130 PetriNetUnfolder]: 18/204 cut-off events. [2023-01-28 04:29:29,427 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 04:29:29,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 204 events. 18/204 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 115 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 179. Up to 2 conditions per place. [2023-01-28 04:29:29,429 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-01-28 04:29:35,103 INFO L134 LiptonReduction]: Checked pairs total: 2906 [2023-01-28 04:29:35,104 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-01-28 04:29:35,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 04:29:35,128 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;@f902f1c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 04:29:35,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 04:29:35,157 INFO L130 PetriNetUnfolder]: 6/34 cut-off events. [2023-01-28 04:29:35,157 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 04:29:35,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:29:35,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:29:35,158 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 2 more)] === [2023-01-28 04:29:35,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:29:35,163 INFO L85 PathProgramCache]: Analyzing trace with hash -126291369, now seen corresponding path program 1 times [2023-01-28 04:29:35,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:29:35,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882545160] [2023-01-28 04:29:35,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:29:35,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:29:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:29:35,600 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 04:29:35,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:29:35,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882545160] [2023-01-28 04:29:35,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882545160] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:29:35,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:29:35,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 04:29:35,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092234847] [2023-01-28 04:29:35,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:29:35,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:29:35,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:29:35,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:29:35,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:29:35,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 420 [2023-01-28 04:29:35,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 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 04:29:35,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:29:35,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 420 [2023-01-28 04:29:35,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:29:35,885 INFO L130 PetriNetUnfolder]: 1615/2213 cut-off events. [2023-01-28 04:29:35,886 INFO L131 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2023-01-28 04:29:35,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4407 conditions, 2213 events. 1615/2213 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8955 event pairs, 271 based on Foata normal form. 1/1331 useless extension candidates. Maximal degree in co-relation 3408. Up to 1413 conditions per place. [2023-01-28 04:29:35,899 INFO L137 encePairwiseOnDemand]: 416/420 looper letters, 43 selfloop transitions, 3 changer transitions 1/53 dead transitions. [2023-01-28 04:29:35,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 239 flow [2023-01-28 04:29:35,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:29:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:29:35,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2023-01-28 04:29:35,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976190476190476 [2023-01-28 04:29:35,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2023-01-28 04:29:35,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2023-01-28 04:29:35,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:29:35,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2023-01-28 04:29:35,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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 04:29:35,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 04:29:35,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 04:29:35,935 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 94 flow. Second operand 3 states and 627 transitions. [2023-01-28 04:29:35,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 239 flow [2023-01-28 04:29:35,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 53 transitions, 213 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 04:29:35,942 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 97 flow [2023-01-28 04:29:35,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-01-28 04:29:35,945 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-01-28 04:29:35,946 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 97 flow [2023-01-28 04:29:35,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 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 04:29:35,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:29:35,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:29:35,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 04:29:35,968 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 2 more)] === [2023-01-28 04:29:35,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:29:35,974 INFO L85 PathProgramCache]: Analyzing trace with hash -166356890, now seen corresponding path program 1 times [2023-01-28 04:29:35,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:29:35,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145074982] [2023-01-28 04:29:35,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:29:35,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:29:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:29:36,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:29:36,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:29:36,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145074982] [2023-01-28 04:29:36,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145074982] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:29:36,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:29:36,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 04:29:36,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801438727] [2023-01-28 04:29:36,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:29:36,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:29:36,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:29:36,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:29:36,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:29:36,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 420 [2023-01-28 04:29:36,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 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 04:29:36,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:29:36,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 420 [2023-01-28 04:29:36,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:29:36,308 INFO L130 PetriNetUnfolder]: 2187/2885 cut-off events. [2023-01-28 04:29:36,308 INFO L131 PetriNetUnfolder]: For 465/465 co-relation queries the response was YES. [2023-01-28 04:29:36,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6425 conditions, 2885 events. 2187/2885 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 11793 event pairs, 596 based on Foata normal form. 76/2337 useless extension candidates. Maximal degree in co-relation 2214. Up to 1820 conditions per place. [2023-01-28 04:29:36,319 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 53 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-01-28 04:29:36,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 59 transitions, 264 flow [2023-01-28 04:29:36,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:29:36,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:29:36,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2023-01-28 04:29:36,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2023-01-28 04:29:36,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2023-01-28 04:29:36,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2023-01-28 04:29:36,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:29:36,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2023-01-28 04:29:36,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 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 04:29:36,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 04:29:36,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 04:29:36,325 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 97 flow. Second operand 3 states and 620 transitions. [2023-01-28 04:29:36,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 59 transitions, 264 flow [2023-01-28 04:29:36,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 04:29:36,329 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 108 flow [2023-01-28 04:29:36,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-01-28 04:29:36,329 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-01-28 04:29:36,329 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 108 flow [2023-01-28 04:29:36,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 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 04:29:36,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:29:36,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:29:36,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 04:29:36,330 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 2 more)] === [2023-01-28 04:29:36,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:29:36,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1584924050, now seen corresponding path program 1 times [2023-01-28 04:29:36,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:29:36,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250608142] [2023-01-28 04:29:36,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:29:36,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:29:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:29:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:29:36,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:29:36,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250608142] [2023-01-28 04:29:36,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250608142] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:29:36,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:29:36,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 04:29:36,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994114801] [2023-01-28 04:29:36,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:29:36,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:29:36,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:29:36,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:29:36,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:29:36,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 420 [2023-01-28 04:29:36,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 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 04:29:36,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:29:36,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 420 [2023-01-28 04:29:36,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:29:36,688 INFO L130 PetriNetUnfolder]: 2417/3353 cut-off events. [2023-01-28 04:29:36,688 INFO L131 PetriNetUnfolder]: For 1265/1265 co-relation queries the response was YES. [2023-01-28 04:29:36,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7906 conditions, 3353 events. 2417/3353 cut-off events. For 1265/1265 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15584 event pairs, 747 based on Foata normal form. 100/3107 useless extension candidates. Maximal degree in co-relation 3828. Up to 2227 conditions per place. [2023-01-28 04:29:36,701 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 57 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-01-28 04:29:36,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 63 transitions, 298 flow [2023-01-28 04:29:36,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:29:36,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:29:36,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 622 transitions. [2023-01-28 04:29:36,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4936507936507937 [2023-01-28 04:29:36,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 622 transitions. [2023-01-28 04:29:36,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 622 transitions. [2023-01-28 04:29:36,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:29:36,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 622 transitions. [2023-01-28 04:29:36,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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 04:29:36,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 04:29:36,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 04:29:36,706 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 108 flow. Second operand 3 states and 622 transitions. [2023-01-28 04:29:36,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 63 transitions, 298 flow [2023-01-28 04:29:36,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 63 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 04:29:36,708 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 120 flow [2023-01-28 04:29:36,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-01-28 04:29:36,709 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-01-28 04:29:36,709 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 120 flow [2023-01-28 04:29:36,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 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 04:29:36,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:29:36,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:29:36,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 04:29:36,710 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 2 more)] === [2023-01-28 04:29:36,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:29:36,710 INFO L85 PathProgramCache]: Analyzing trace with hash 830249853, now seen corresponding path program 1 times [2023-01-28 04:29:36,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:29:36,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178456018] [2023-01-28 04:29:36,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:29:36,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:29:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:29:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:29:36,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:29:36,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178456018] [2023-01-28 04:29:36,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178456018] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:29:36,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:29:36,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 04:29:36,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297595848] [2023-01-28 04:29:36,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:29:36,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:29:36,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:29:36,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:29:36,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:29:36,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 420 [2023-01-28 04:29:36,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:29:36,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:29:36,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 420 [2023-01-28 04:29:36,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:29:37,068 INFO L130 PetriNetUnfolder]: 2112/3127 cut-off events. [2023-01-28 04:29:37,068 INFO L131 PetriNetUnfolder]: For 1778/1778 co-relation queries the response was YES. [2023-01-28 04:29:37,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7659 conditions, 3127 events. 2112/3127 cut-off events. For 1778/1778 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 16392 event pairs, 1532 based on Foata normal form. 100/3148 useless extension candidates. Maximal degree in co-relation 3812. Up to 2237 conditions per place. [2023-01-28 04:29:37,081 INFO L137 encePairwiseOnDemand]: 416/420 looper letters, 56 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2023-01-28 04:29:37,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 65 transitions, 313 flow [2023-01-28 04:29:37,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 04:29:37,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 04:29:37,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 734 transitions. [2023-01-28 04:29:37,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369047619047619 [2023-01-28 04:29:37,083 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 734 transitions. [2023-01-28 04:29:37,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 734 transitions. [2023-01-28 04:29:37,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:29:37,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 734 transitions. [2023-01-28 04:29:37,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 183.5) internal successors, (734), 4 states have internal predecessors, (734), 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 04:29:37,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 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 04:29:37,087 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 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 04:29:37,087 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 120 flow. Second operand 4 states and 734 transitions. [2023-01-28 04:29:37,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 65 transitions, 313 flow [2023-01-28 04:29:37,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 65 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 04:29:37,089 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 138 flow [2023-01-28 04:29:37,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-01-28 04:29:37,089 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-01-28 04:29:37,089 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 138 flow [2023-01-28 04:29:37,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:29:37,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:29:37,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:29:37,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 04:29:37,090 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 2 more)] === [2023-01-28 04:29:37,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:29:37,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1828692873, now seen corresponding path program 1 times [2023-01-28 04:29:37,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:29:37,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571442754] [2023-01-28 04:29:37,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:29:37,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:29:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:29:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:29:37,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:29:37,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571442754] [2023-01-28 04:29:37,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571442754] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:29:37,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:29:37,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 04:29:37,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271505551] [2023-01-28 04:29:37,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:29:37,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:29:37,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:29:37,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:29:37,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:29:37,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 420 [2023-01-28 04:29:37,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:29:37,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:29:37,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 420 [2023-01-28 04:29:37,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:29:37,500 INFO L130 PetriNetUnfolder]: 2699/4094 cut-off events. [2023-01-28 04:29:37,501 INFO L131 PetriNetUnfolder]: For 2330/2330 co-relation queries the response was YES. [2023-01-28 04:29:37,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9854 conditions, 4094 events. 2699/4094 cut-off events. For 2330/2330 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 23414 event pairs, 2028 based on Foata normal form. 104/4122 useless extension candidates. Maximal degree in co-relation 5833. Up to 2990 conditions per place. [2023-01-28 04:29:37,516 INFO L137 encePairwiseOnDemand]: 415/420 looper letters, 60 selfloop transitions, 4 changer transitions 20/90 dead transitions. [2023-01-28 04:29:37,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 90 transitions, 450 flow [2023-01-28 04:29:37,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:29:37,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:29:37,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 928 transitions. [2023-01-28 04:29:37,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419047619047619 [2023-01-28 04:29:37,519 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 928 transitions. [2023-01-28 04:29:37,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 928 transitions. [2023-01-28 04:29:37,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:29:37,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 928 transitions. [2023-01-28 04:29:37,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.6) internal successors, (928), 5 states have internal predecessors, (928), 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 04:29:37,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 420.0) internal successors, (2520), 6 states have internal predecessors, (2520), 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 04:29:37,524 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 420.0) internal successors, (2520), 6 states have internal predecessors, (2520), 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 04:29:37,524 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 138 flow. Second operand 5 states and 928 transitions. [2023-01-28 04:29:37,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 90 transitions, 450 flow [2023-01-28 04:29:37,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 90 transitions, 442 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 04:29:37,526 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 166 flow [2023-01-28 04:29:37,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-01-28 04:29:37,527 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-01-28 04:29:37,527 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 166 flow [2023-01-28 04:29:37,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:29:37,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:29:37,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:29:37,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 04:29:37,528 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 2 more)] === [2023-01-28 04:29:37,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:29:37,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2023714045, now seen corresponding path program 1 times [2023-01-28 04:29:37,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:29:37,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190979248] [2023-01-28 04:29:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:29:37,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:29:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:29:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:29:37,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:29:37,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190979248] [2023-01-28 04:29:37,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190979248] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:29:37,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47868450] [2023-01-28 04:29:37,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:29:37,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:29:37,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:29:37,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:29:37,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 04:29:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:29:37,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 04:29:37,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:29:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:29:38,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:29:38,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:29:38,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47868450] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:29:38,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:29:38,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5] total 14 [2023-01-28 04:29:38,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724678036] [2023-01-28 04:29:38,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:29:38,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 04:29:38,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:29:38,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 04:29:38,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-01-28 04:29:38,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 420 [2023-01-28 04:29:38,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 166 flow. Second operand has 7 states, 7 states have (on average 176.42857142857142) internal successors, (1235), 7 states have internal predecessors, (1235), 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 04:29:38,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:29:38,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 420 [2023-01-28 04:29:38,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:29:39,707 INFO L130 PetriNetUnfolder]: 11849/16855 cut-off events. [2023-01-28 04:29:39,707 INFO L131 PetriNetUnfolder]: For 7043/7043 co-relation queries the response was YES. [2023-01-28 04:29:39,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39886 conditions, 16855 events. 11849/16855 cut-off events. For 7043/7043 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 92074 event pairs, 1914 based on Foata normal form. 360/17213 useless extension candidates. Maximal degree in co-relation 30932. Up to 3696 conditions per place. [2023-01-28 04:29:39,766 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 200 selfloop transitions, 33 changer transitions 9/242 dead transitions. [2023-01-28 04:29:39,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 242 transitions, 1214 flow [2023-01-28 04:29:39,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 04:29:39,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 04:29:39,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2465 transitions. [2023-01-28 04:29:39,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45146520146520147 [2023-01-28 04:29:39,770 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2465 transitions. [2023-01-28 04:29:39,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2465 transitions. [2023-01-28 04:29:39,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:29:39,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2465 transitions. [2023-01-28 04:29:39,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 189.6153846153846) internal successors, (2465), 13 states have internal predecessors, (2465), 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 04:29:39,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 420.0) internal successors, (5880), 14 states have internal predecessors, (5880), 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 04:29:39,781 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 420.0) internal successors, (5880), 14 states have internal predecessors, (5880), 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 04:29:39,781 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 166 flow. Second operand 13 states and 2465 transitions. [2023-01-28 04:29:39,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 242 transitions, 1214 flow [2023-01-28 04:29:39,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 242 transitions, 1210 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 04:29:39,787 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 445 flow [2023-01-28 04:29:39,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=445, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2023-01-28 04:29:39,789 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2023-01-28 04:29:39,789 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 445 flow [2023-01-28 04:29:39,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 176.42857142857142) internal successors, (1235), 7 states have internal predecessors, (1235), 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 04:29:39,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:29:39,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:29:39,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 04:29:39,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-28 04:29:39,996 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 2 more)] === [2023-01-28 04:29:39,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:29:39,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1097017845, now seen corresponding path program 2 times [2023-01-28 04:29:39,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:29:39,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683684608] [2023-01-28 04:29:39,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:29:39,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:29:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:29:40,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:29:40,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:29:40,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683684608] [2023-01-28 04:29:40,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683684608] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:29:40,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:29:40,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:29:40,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792435483] [2023-01-28 04:29:40,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:29:40,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:29:40,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:29:40,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:29:40,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-01-28 04:29:40,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2023-01-28 04:29:40,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 445 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:29:40,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:29:40,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2023-01-28 04:29:40,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:29:41,736 INFO L130 PetriNetUnfolder]: 12313/17699 cut-off events. [2023-01-28 04:29:41,736 INFO L131 PetriNetUnfolder]: For 31798/31798 co-relation queries the response was YES. [2023-01-28 04:29:41,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57552 conditions, 17699 events. 12313/17699 cut-off events. For 31798/31798 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 98739 event pairs, 3658 based on Foata normal form. 52/17749 useless extension candidates. Maximal degree in co-relation 48026. Up to 13071 conditions per place. [2023-01-28 04:29:41,821 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 102 selfloop transitions, 13 changer transitions 30/145 dead transitions. [2023-01-28 04:29:41,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 145 transitions, 1003 flow [2023-01-28 04:29:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 04:29:41,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 04:29:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1173 transitions. [2023-01-28 04:29:41,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654761904761905 [2023-01-28 04:29:41,824 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1173 transitions. [2023-01-28 04:29:41,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1173 transitions. [2023-01-28 04:29:41,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:29:41,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1173 transitions. [2023-01-28 04:29:41,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 195.5) internal successors, (1173), 6 states have internal predecessors, (1173), 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 04:29:41,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 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 04:29:41,829 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 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 04:29:41,829 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 445 flow. Second operand 6 states and 1173 transitions. [2023-01-28 04:29:41,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 145 transitions, 1003 flow [2023-01-28 04:29:41,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 145 transitions, 982 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-28 04:29:41,967 INFO L231 Difference]: Finished difference. Result has 79 places, 79 transitions, 519 flow [2023-01-28 04:29:41,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=519, PETRI_PLACES=79, PETRI_TRANSITIONS=79} [2023-01-28 04:29:41,968 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2023-01-28 04:29:41,968 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 79 transitions, 519 flow [2023-01-28 04:29:41,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:29:41,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:29:41,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:29:41,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 04:29:41,969 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 2 more)] === [2023-01-28 04:29:41,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:29:41,969 INFO L85 PathProgramCache]: Analyzing trace with hash -378640933, now seen corresponding path program 3 times [2023-01-28 04:29:41,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:29:41,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512897973] [2023-01-28 04:29:41,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:29:41,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:29:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:29:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:29:42,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:29:42,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512897973] [2023-01-28 04:29:42,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512897973] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:29:42,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:29:42,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:29:42,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519121810] [2023-01-28 04:29:42,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:29:42,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:29:42,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:29:42,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:29:42,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 04:29:42,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2023-01-28 04:29:42,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 79 transitions, 519 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:29:42,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:29:42,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2023-01-28 04:29:42,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:29:44,396 INFO L130 PetriNetUnfolder]: 17203/24645 cut-off events. [2023-01-28 04:29:44,396 INFO L131 PetriNetUnfolder]: For 57201/57201 co-relation queries the response was YES. [2023-01-28 04:29:44,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84027 conditions, 24645 events. 17203/24645 cut-off events. For 57201/57201 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 142765 event pairs, 5212 based on Foata normal form. 208/24851 useless extension candidates. Maximal degree in co-relation 65471. Up to 13027 conditions per place. [2023-01-28 04:29:44,524 INFO L137 encePairwiseOnDemand]: 412/420 looper letters, 165 selfloop transitions, 30 changer transitions 11/206 dead transitions. [2023-01-28 04:29:44,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 206 transitions, 1605 flow [2023-01-28 04:29:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:29:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:29:44,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1561 transitions. [2023-01-28 04:29:44,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46458333333333335 [2023-01-28 04:29:44,527 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1561 transitions. [2023-01-28 04:29:44,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1561 transitions. [2023-01-28 04:29:44,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:29:44,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1561 transitions. [2023-01-28 04:29:44,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 195.125) internal successors, (1561), 8 states have internal predecessors, (1561), 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 04:29:44,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 420.0) internal successors, (3780), 9 states have internal predecessors, (3780), 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 04:29:44,533 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 420.0) internal successors, (3780), 9 states have internal predecessors, (3780), 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 04:29:44,533 INFO L175 Difference]: Start difference. First operand has 79 places, 79 transitions, 519 flow. Second operand 8 states and 1561 transitions. [2023-01-28 04:29:44,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 206 transitions, 1605 flow [2023-01-28 04:29:44,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 206 transitions, 1513 flow, removed 24 selfloop flow, removed 2 redundant places. [2023-01-28 04:29:44,724 INFO L231 Difference]: Finished difference. Result has 87 places, 97 transitions, 745 flow [2023-01-28 04:29:44,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=745, PETRI_PLACES=87, PETRI_TRANSITIONS=97} [2023-01-28 04:29:44,725 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2023-01-28 04:29:44,725 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 97 transitions, 745 flow [2023-01-28 04:29:44,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:29:44,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:29:44,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:29:44,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 04:29:44,726 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 2 more)] === [2023-01-28 04:29:44,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:29:44,726 INFO L85 PathProgramCache]: Analyzing trace with hash 105860259, now seen corresponding path program 4 times [2023-01-28 04:29:44,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:29:44,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215965195] [2023-01-28 04:29:44,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:29:44,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:29:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:29:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:29:45,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:29:45,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215965195] [2023-01-28 04:29:45,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215965195] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:29:45,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:29:45,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:29:45,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324050045] [2023-01-28 04:29:45,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:29:45,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:29:45,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:29:45,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:29:45,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 04:29:45,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2023-01-28 04:29:45,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 97 transitions, 745 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:29:45,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:29:45,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2023-01-28 04:29:45,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:29:47,934 INFO L130 PetriNetUnfolder]: 22917/33653 cut-off events. [2023-01-28 04:29:47,934 INFO L131 PetriNetUnfolder]: For 89298/89298 co-relation queries the response was YES. [2023-01-28 04:29:48,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122905 conditions, 33653 events. 22917/33653 cut-off events. For 89298/89298 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 217178 event pairs, 6526 based on Foata normal form. 368/34019 useless extension candidates. Maximal degree in co-relation 102762. Up to 16763 conditions per place. [2023-01-28 04:29:48,140 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 208 selfloop transitions, 37 changer transitions 11/256 dead transitions. [2023-01-28 04:29:48,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 256 transitions, 2098 flow [2023-01-28 04:29:48,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:29:48,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:29:48,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1585 transitions. [2023-01-28 04:29:48,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47172619047619047 [2023-01-28 04:29:48,144 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1585 transitions. [2023-01-28 04:29:48,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1585 transitions. [2023-01-28 04:29:48,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:29:48,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1585 transitions. [2023-01-28 04:29:48,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 198.125) internal successors, (1585), 8 states have internal predecessors, (1585), 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 04:29:48,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 420.0) internal successors, (3780), 9 states have internal predecessors, (3780), 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 04:29:48,150 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 420.0) internal successors, (3780), 9 states have internal predecessors, (3780), 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 04:29:48,150 INFO L175 Difference]: Start difference. First operand has 87 places, 97 transitions, 745 flow. Second operand 8 states and 1585 transitions. [2023-01-28 04:29:48,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 256 transitions, 2098 flow [2023-01-28 04:29:48,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 256 transitions, 2029 flow, removed 31 selfloop flow, removed 1 redundant places. [2023-01-28 04:29:48,666 INFO L231 Difference]: Finished difference. Result has 98 places, 115 transitions, 1055 flow [2023-01-28 04:29:48,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1055, PETRI_PLACES=98, PETRI_TRANSITIONS=115} [2023-01-28 04:29:48,667 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 56 predicate places. [2023-01-28 04:29:48,667 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 115 transitions, 1055 flow [2023-01-28 04:29:48,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:29:48,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:29:48,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:29:48,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 04:29:48,668 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 2 more)] === [2023-01-28 04:29:48,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:29:48,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2028839541, now seen corresponding path program 5 times [2023-01-28 04:29:48,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:29:48,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104764184] [2023-01-28 04:29:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:29:48,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:29:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:29:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:29:48,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:29:48,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104764184] [2023-01-28 04:29:48,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104764184] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:29:48,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:29:48,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:29:48,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351470254] [2023-01-28 04:29:48,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:29:48,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:29:48,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:29:48,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:29:48,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 04:29:48,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2023-01-28 04:29:48,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 115 transitions, 1055 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:29:48,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:29:48,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2023-01-28 04:29:48,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:29:51,698 INFO L130 PetriNetUnfolder]: 20461/29645 cut-off events. [2023-01-28 04:29:51,698 INFO L131 PetriNetUnfolder]: For 109577/109577 co-relation queries the response was YES. [2023-01-28 04:29:51,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116455 conditions, 29645 events. 20461/29645 cut-off events. For 109577/109577 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 181315 event pairs, 7882 based on Foata normal form. 148/29791 useless extension candidates. Maximal degree in co-relation 100526. Up to 23679 conditions per place. [2023-01-28 04:29:52,023 INFO L137 encePairwiseOnDemand]: 413/420 looper letters, 136 selfloop transitions, 32 changer transitions 28/196 dead transitions. [2023-01-28 04:29:52,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 196 transitions, 1687 flow [2023-01-28 04:29:52,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:29:52,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:29:52,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1558 transitions. [2023-01-28 04:29:52,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636904761904762 [2023-01-28 04:29:52,029 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1558 transitions. [2023-01-28 04:29:52,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1558 transitions. [2023-01-28 04:29:52,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:29:52,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1558 transitions. [2023-01-28 04:29:52,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 194.75) internal successors, (1558), 8 states have internal predecessors, (1558), 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 04:29:52,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 420.0) internal successors, (3780), 9 states have internal predecessors, (3780), 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 04:29:52,048 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 420.0) internal successors, (3780), 9 states have internal predecessors, (3780), 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 04:29:52,049 INFO L175 Difference]: Start difference. First operand has 98 places, 115 transitions, 1055 flow. Second operand 8 states and 1558 transitions. [2023-01-28 04:29:52,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 196 transitions, 1687 flow [2023-01-28 04:29:52,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 196 transitions, 1653 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-01-28 04:29:52,845 INFO L231 Difference]: Finished difference. Result has 106 places, 110 transitions, 1033 flow [2023-01-28 04:29:52,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1033, PETRI_PLACES=106, PETRI_TRANSITIONS=110} [2023-01-28 04:29:52,845 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 64 predicate places. [2023-01-28 04:29:52,845 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 110 transitions, 1033 flow [2023-01-28 04:29:52,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:29:52,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:29:52,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:29:52,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 04:29:52,846 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:29:52,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:29:52,847 INFO L85 PathProgramCache]: Analyzing trace with hash -763011869, now seen corresponding path program 6 times [2023-01-28 04:29:52,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:29:52,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960362424] [2023-01-28 04:29:52,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:29:52,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:29:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:29:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:29:53,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:29:53,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960362424] [2023-01-28 04:29:53,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960362424] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:29:53,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518465571] [2023-01-28 04:29:53,112 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:29:53,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:29:53,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:29:53,130 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:29:53,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 04:29:53,247 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:29:53,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:29:53,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 04:29:53,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:29:53,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:29:53,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 04:29:53,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518465571] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:29:53,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 04:29:53,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-01-28 04:29:53,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646350073] [2023-01-28 04:29:53,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:29:53,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:29:53,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:29:53,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:29:53,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-01-28 04:29:53,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 420 [2023-01-28 04:29:53,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 110 transitions, 1033 flow. Second operand has 6 states, 6 states have (on average 179.16666666666666) internal successors, (1075), 6 states have internal predecessors, (1075), 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 04:29:53,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:29:53,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 420 [2023-01-28 04:29:53,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:29:57,379 INFO L130 PetriNetUnfolder]: 28379/41777 cut-off events. [2023-01-28 04:29:57,379 INFO L131 PetriNetUnfolder]: For 145249/145249 co-relation queries the response was YES. [2023-01-28 04:29:57,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162728 conditions, 41777 events. 28379/41777 cut-off events. For 145249/145249 co-relation queries the response was YES. Maximal size of possible extension queue 1499. Compared 278659 event pairs, 10660 based on Foata normal form. 176/41951 useless extension candidates. Maximal degree in co-relation 140570. Up to 25651 conditions per place. [2023-01-28 04:29:57,669 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 228 selfloop transitions, 99 changer transitions 19/346 dead transitions. [2023-01-28 04:29:57,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 346 transitions, 3641 flow [2023-01-28 04:29:57,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 04:29:57,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 04:29:57,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2275 transitions. [2023-01-28 04:29:57,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4513888888888889 [2023-01-28 04:29:57,673 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2275 transitions. [2023-01-28 04:29:57,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2275 transitions. [2023-01-28 04:29:57,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:29:57,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2275 transitions. [2023-01-28 04:29:57,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 189.58333333333334) internal successors, (2275), 12 states have internal predecessors, (2275), 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 04:29:57,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 420.0) internal successors, (5460), 13 states have internal predecessors, (5460), 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 04:29:57,681 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 420.0) internal successors, (5460), 13 states have internal predecessors, (5460), 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 04:29:57,681 INFO L175 Difference]: Start difference. First operand has 106 places, 110 transitions, 1033 flow. Second operand 12 states and 2275 transitions. [2023-01-28 04:29:57,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 346 transitions, 3641 flow [2023-01-28 04:29:58,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 346 transitions, 3472 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-01-28 04:29:58,829 INFO L231 Difference]: Finished difference. Result has 114 places, 182 transitions, 2131 flow [2023-01-28 04:29:58,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2131, PETRI_PLACES=114, PETRI_TRANSITIONS=182} [2023-01-28 04:29:58,830 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2023-01-28 04:29:58,830 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 182 transitions, 2131 flow [2023-01-28 04:29:58,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 179.16666666666666) internal successors, (1075), 6 states have internal predecessors, (1075), 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 04:29:58,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:29:58,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:29:58,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 04:29:59,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-01-28 04:29:59,035 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:29:59,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:29:59,036 INFO L85 PathProgramCache]: Analyzing trace with hash -269105815, now seen corresponding path program 7 times [2023-01-28 04:29:59,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:29:59,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796076587] [2023-01-28 04:29:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:29:59,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:29:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:29:59,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:29:59,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:29:59,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796076587] [2023-01-28 04:29:59,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796076587] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:29:59,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201840660] [2023-01-28 04:29:59,272 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:29:59,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:29:59,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:29:59,287 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:29:59,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 04:29:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:29:59,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:29:59,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:29:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:29:59,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:29:59,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:29:59,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201840660] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:29:59,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:29:59,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 12 [2023-01-28 04:29:59,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378246818] [2023-01-28 04:29:59,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:29:59,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:29:59,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:29:59,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:29:59,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-01-28 04:29:59,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2023-01-28 04:29:59,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 182 transitions, 2131 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:29:59,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:29:59,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2023-01-28 04:29:59,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:30:04,229 INFO L130 PetriNetUnfolder]: 30215/44493 cut-off events. [2023-01-28 04:30:04,229 INFO L131 PetriNetUnfolder]: For 199034/199034 co-relation queries the response was YES. [2023-01-28 04:30:04,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188172 conditions, 44493 events. 30215/44493 cut-off events. For 199034/199034 co-relation queries the response was YES. Maximal size of possible extension queue 1687. Compared 302567 event pairs, 6554 based on Foata normal form. 2056/46547 useless extension candidates. Maximal degree in co-relation 170418. Up to 14235 conditions per place. [2023-01-28 04:30:04,566 INFO L137 encePairwiseOnDemand]: 412/420 looper letters, 205 selfloop transitions, 114 changer transitions 0/319 dead transitions. [2023-01-28 04:30:04,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 319 transitions, 3626 flow [2023-01-28 04:30:04,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 04:30:04,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 04:30:04,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1378 transitions. [2023-01-28 04:30:04,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46870748299319726 [2023-01-28 04:30:04,570 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1378 transitions. [2023-01-28 04:30:04,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1378 transitions. [2023-01-28 04:30:04,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:30:04,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1378 transitions. [2023-01-28 04:30:04,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 196.85714285714286) internal successors, (1378), 7 states have internal predecessors, (1378), 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 04:30:04,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 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 04:30:04,575 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 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 04:30:04,575 INFO L175 Difference]: Start difference. First operand has 114 places, 182 transitions, 2131 flow. Second operand 7 states and 1378 transitions. [2023-01-28 04:30:04,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 319 transitions, 3626 flow [2023-01-28 04:30:06,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 319 transitions, 3610 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-28 04:30:06,373 INFO L231 Difference]: Finished difference. Result has 121 places, 212 transitions, 2808 flow [2023-01-28 04:30:06,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2808, PETRI_PLACES=121, PETRI_TRANSITIONS=212} [2023-01-28 04:30:06,374 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 79 predicate places. [2023-01-28 04:30:06,374 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 212 transitions, 2808 flow [2023-01-28 04:30:06,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:30:06,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:30:06,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:30:06,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 04:30:06,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:30:06,586 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:30:06,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:30:06,586 INFO L85 PathProgramCache]: Analyzing trace with hash -643399995, now seen corresponding path program 8 times [2023-01-28 04:30:06,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:30:06,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223963690] [2023-01-28 04:30:06,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:30:06,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:30:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:30:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:30:07,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:30:07,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223963690] [2023-01-28 04:30:07,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223963690] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:30:07,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:30:07,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:30:07,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107796668] [2023-01-28 04:30:07,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:30:07,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:30:07,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:30:07,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:30:07,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-01-28 04:30:07,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2023-01-28 04:30:07,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 212 transitions, 2808 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:30:07,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:30:07,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2023-01-28 04:30:07,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:30:11,384 INFO L130 PetriNetUnfolder]: 27307/39969 cut-off events. [2023-01-28 04:30:11,384 INFO L131 PetriNetUnfolder]: For 219713/219713 co-relation queries the response was YES. [2023-01-28 04:30:11,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182852 conditions, 39969 events. 27307/39969 cut-off events. For 219713/219713 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 262416 event pairs, 11204 based on Foata normal form. 1096/41063 useless extension candidates. Maximal degree in co-relation 165853. Up to 33509 conditions per place. [2023-01-28 04:30:11,665 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 177 selfloop transitions, 88 changer transitions 6/271 dead transitions. [2023-01-28 04:30:11,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 271 transitions, 3657 flow [2023-01-28 04:30:11,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 04:30:11,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 04:30:11,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1163 transitions. [2023-01-28 04:30:11,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46150793650793653 [2023-01-28 04:30:11,673 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1163 transitions. [2023-01-28 04:30:11,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1163 transitions. [2023-01-28 04:30:11,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:30:11,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1163 transitions. [2023-01-28 04:30:11,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 193.83333333333334) internal successors, (1163), 6 states have internal predecessors, (1163), 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 04:30:11,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 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 04:30:11,686 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 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 04:30:11,686 INFO L175 Difference]: Start difference. First operand has 121 places, 212 transitions, 2808 flow. Second operand 6 states and 1163 transitions. [2023-01-28 04:30:11,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 271 transitions, 3657 flow [2023-01-28 04:30:14,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 271 transitions, 3433 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-01-28 04:30:14,023 INFO L231 Difference]: Finished difference. Result has 119 places, 208 transitions, 2735 flow [2023-01-28 04:30:14,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2735, PETRI_PLACES=119, PETRI_TRANSITIONS=208} [2023-01-28 04:30:14,024 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 77 predicate places. [2023-01-28 04:30:14,024 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 208 transitions, 2735 flow [2023-01-28 04:30:14,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:30:14,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:30:14,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:30:14,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 04:30:14,025 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:30:14,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:30:14,025 INFO L85 PathProgramCache]: Analyzing trace with hash 121245286, now seen corresponding path program 1 times [2023-01-28 04:30:14,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:30:14,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182940384] [2023-01-28 04:30:14,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:30:14,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:30:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:30:14,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:30:14,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:30:14,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182940384] [2023-01-28 04:30:14,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182940384] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:30:14,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:30:14,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:30:14,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826094355] [2023-01-28 04:30:14,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:30:14,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:30:14,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:30:14,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:30:14,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 04:30:14,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 420 [2023-01-28 04:30:14,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 208 transitions, 2735 flow. Second operand has 6 states, 6 states have (on average 179.16666666666666) internal successors, (1075), 6 states have internal predecessors, (1075), 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 04:30:14,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:30:14,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 420 [2023-01-28 04:30:14,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:30:18,142 INFO L130 PetriNetUnfolder]: 25995/37549 cut-off events. [2023-01-28 04:30:18,142 INFO L131 PetriNetUnfolder]: For 150771/150771 co-relation queries the response was YES. [2023-01-28 04:30:18,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157381 conditions, 37549 events. 25995/37549 cut-off events. For 150771/150771 co-relation queries the response was YES. Maximal size of possible extension queue 1425. Compared 240288 event pairs, 7975 based on Foata normal form. 770/38317 useless extension candidates. Maximal degree in co-relation 150660. Up to 16603 conditions per place. [2023-01-28 04:30:18,462 INFO L137 encePairwiseOnDemand]: 413/420 looper letters, 292 selfloop transitions, 44 changer transitions 29/365 dead transitions. [2023-01-28 04:30:18,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 365 transitions, 4269 flow [2023-01-28 04:30:18,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:30:18,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:30:18,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1541 transitions. [2023-01-28 04:30:18,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45863095238095236 [2023-01-28 04:30:18,465 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1541 transitions. [2023-01-28 04:30:18,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1541 transitions. [2023-01-28 04:30:18,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:30:18,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1541 transitions. [2023-01-28 04:30:18,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 192.625) internal successors, (1541), 8 states have internal predecessors, (1541), 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 04:30:18,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 420.0) internal successors, (3780), 9 states have internal predecessors, (3780), 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 04:30:18,471 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 420.0) internal successors, (3780), 9 states have internal predecessors, (3780), 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 04:30:18,471 INFO L175 Difference]: Start difference. First operand has 119 places, 208 transitions, 2735 flow. Second operand 8 states and 1541 transitions. [2023-01-28 04:30:18,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 365 transitions, 4269 flow [2023-01-28 04:30:20,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 365 transitions, 3923 flow, removed 91 selfloop flow, removed 5 redundant places. [2023-01-28 04:30:20,090 INFO L231 Difference]: Finished difference. Result has 125 places, 200 transitions, 2307 flow [2023-01-28 04:30:20,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=2154, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2307, PETRI_PLACES=125, PETRI_TRANSITIONS=200} [2023-01-28 04:30:20,090 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 83 predicate places. [2023-01-28 04:30:20,090 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 200 transitions, 2307 flow [2023-01-28 04:30:20,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 179.16666666666666) internal successors, (1075), 6 states have internal predecessors, (1075), 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 04:30:20,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:30:20,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:30:20,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 04:30:20,091 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:30:20,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:30:20,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2003128858, now seen corresponding path program 2 times [2023-01-28 04:30:20,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:30:20,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706825454] [2023-01-28 04:30:20,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:30:20,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:30:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:30:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:30:20,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:30:20,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706825454] [2023-01-28 04:30:20,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706825454] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:30:20,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206845549] [2023-01-28 04:30:20,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:30:20,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:30:20,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:30:20,337 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:30:20,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 04:30:20,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:30:20,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:30:20,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:30:20,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:30:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:30:20,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:30:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:30:20,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206845549] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:30:20,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:30:20,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 13 [2023-01-28 04:30:20,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790151141] [2023-01-28 04:30:20,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:30:20,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:30:20,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:30:20,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:30:20,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-01-28 04:30:20,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2023-01-28 04:30:20,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 200 transitions, 2307 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:30:20,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:30:20,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2023-01-28 04:30:20,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:30:25,356 INFO L130 PetriNetUnfolder]: 34401/50117 cut-off events. [2023-01-28 04:30:25,356 INFO L131 PetriNetUnfolder]: For 219223/219223 co-relation queries the response was YES. [2023-01-28 04:30:25,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219129 conditions, 50117 events. 34401/50117 cut-off events. For 219223/219223 co-relation queries the response was YES. Maximal size of possible extension queue 1863. Compared 342644 event pairs, 7853 based on Foata normal form. 488/50603 useless extension candidates. Maximal degree in co-relation 214606. Up to 17700 conditions per place. [2023-01-28 04:30:26,029 INFO L137 encePairwiseOnDemand]: 413/420 looper letters, 283 selfloop transitions, 81 changer transitions 3/367 dead transitions. [2023-01-28 04:30:26,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 367 transitions, 4066 flow [2023-01-28 04:30:26,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:30:26,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:30:26,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1582 transitions. [2023-01-28 04:30:26,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2023-01-28 04:30:26,032 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1582 transitions. [2023-01-28 04:30:26,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1582 transitions. [2023-01-28 04:30:26,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:30:26,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1582 transitions. [2023-01-28 04:30:26,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 197.75) internal successors, (1582), 8 states have internal predecessors, (1582), 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 04:30:26,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 420.0) internal successors, (3780), 9 states have internal predecessors, (3780), 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 04:30:26,037 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 420.0) internal successors, (3780), 9 states have internal predecessors, (3780), 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 04:30:26,037 INFO L175 Difference]: Start difference. First operand has 125 places, 200 transitions, 2307 flow. Second operand 8 states and 1582 transitions. [2023-01-28 04:30:26,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 367 transitions, 4066 flow [2023-01-28 04:30:28,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 367 transitions, 3983 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 04:30:28,295 INFO L231 Difference]: Finished difference. Result has 133 places, 221 transitions, 2771 flow [2023-01-28 04:30:28,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2771, PETRI_PLACES=133, PETRI_TRANSITIONS=221} [2023-01-28 04:30:28,295 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 91 predicate places. [2023-01-28 04:30:28,295 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 221 transitions, 2771 flow [2023-01-28 04:30:28,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:30:28,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:30:28,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:30:28,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 04:30:28,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 04:30:28,502 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:30:28,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:30:28,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1008138826, now seen corresponding path program 3 times [2023-01-28 04:30:28,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:30:28,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80954537] [2023-01-28 04:30:28,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:30:28,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:30:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:30:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:30:28,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:30:28,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80954537] [2023-01-28 04:30:28,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80954537] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:30:28,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:30:28,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:30:28,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679650621] [2023-01-28 04:30:28,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:30:28,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:30:28,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:30:28,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:30:28,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 04:30:28,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2023-01-28 04:30:28,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 221 transitions, 2771 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:30:28,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:30:28,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2023-01-28 04:30:28,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:30:35,803 INFO L130 PetriNetUnfolder]: 34933/50957 cut-off events. [2023-01-28 04:30:35,803 INFO L131 PetriNetUnfolder]: For 312871/312871 co-relation queries the response was YES. [2023-01-28 04:30:36,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239304 conditions, 50957 events. 34933/50957 cut-off events. For 312871/312871 co-relation queries the response was YES. Maximal size of possible extension queue 1927. Compared 344134 event pairs, 13516 based on Foata normal form. 580/51535 useless extension candidates. Maximal degree in co-relation 234591. Up to 39127 conditions per place. [2023-01-28 04:30:36,394 INFO L137 encePairwiseOnDemand]: 413/420 looper letters, 248 selfloop transitions, 71 changer transitions 19/338 dead transitions. [2023-01-28 04:30:36,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 338 transitions, 4240 flow [2023-01-28 04:30:36,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:30:36,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:30:36,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1552 transitions. [2023-01-28 04:30:36,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2023-01-28 04:30:36,397 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1552 transitions. [2023-01-28 04:30:36,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1552 transitions. [2023-01-28 04:30:36,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:30:36,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1552 transitions. [2023-01-28 04:30:36,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 194.0) internal successors, (1552), 8 states have internal predecessors, (1552), 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 04:30:36,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 420.0) internal successors, (3780), 9 states have internal predecessors, (3780), 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 04:30:36,401 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 420.0) internal successors, (3780), 9 states have internal predecessors, (3780), 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 04:30:36,401 INFO L175 Difference]: Start difference. First operand has 133 places, 221 transitions, 2771 flow. Second operand 8 states and 1552 transitions. [2023-01-28 04:30:36,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 338 transitions, 4240 flow [2023-01-28 04:30:39,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 338 transitions, 4174 flow, removed 33 selfloop flow, removed 0 redundant places. [2023-01-28 04:30:39,271 INFO L231 Difference]: Finished difference. Result has 141 places, 228 transitions, 2978 flow [2023-01-28 04:30:39,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=2617, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2978, PETRI_PLACES=141, PETRI_TRANSITIONS=228} [2023-01-28 04:30:39,271 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2023-01-28 04:30:39,272 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 228 transitions, 2978 flow [2023-01-28 04:30:39,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:30:39,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:30:39,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:30:39,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 04:30:39,272 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:30:39,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:30:39,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1255457046, now seen corresponding path program 4 times [2023-01-28 04:30:39,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:30:39,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690727591] [2023-01-28 04:30:39,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:30:39,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:30:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:30:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:30:39,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:30:39,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690727591] [2023-01-28 04:30:39,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690727591] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:30:39,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675362015] [2023-01-28 04:30:39,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:30:39,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:30:39,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:30:39,461 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:30:39,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 04:30:39,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:30:39,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:30:39,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 04:30:39,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:30:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:30:39,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:30:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:30:39,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675362015] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:30:39,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:30:39,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8] total 16 [2023-01-28 04:30:39,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799282776] [2023-01-28 04:30:39,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:30:39,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 04:30:39,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:30:39,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 04:30:39,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-01-28 04:30:39,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 420 [2023-01-28 04:30:39,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 228 transitions, 2978 flow. Second operand has 17 states, 17 states have (on average 171.94117647058823) internal successors, (2923), 17 states have internal predecessors, (2923), 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 04:30:39,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:30:39,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 420 [2023-01-28 04:30:39,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:30:48,333 INFO L130 PetriNetUnfolder]: 42691/63978 cut-off events. [2023-01-28 04:30:48,333 INFO L131 PetriNetUnfolder]: For 379837/379837 co-relation queries the response was YES. [2023-01-28 04:30:48,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298546 conditions, 63978 events. 42691/63978 cut-off events. For 379837/379837 co-relation queries the response was YES. Maximal size of possible extension queue 2551. Compared 480074 event pairs, 4324 based on Foata normal form. 1990/65966 useless extension candidates. Maximal degree in co-relation 293268. Up to 14382 conditions per place. [2023-01-28 04:30:49,005 INFO L137 encePairwiseOnDemand]: 407/420 looper letters, 548 selfloop transitions, 334 changer transitions 31/913 dead transitions. [2023-01-28 04:30:49,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 913 transitions, 11117 flow [2023-01-28 04:30:49,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-28 04:30:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-28 04:30:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 5267 transitions. [2023-01-28 04:30:49,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243021346469623 [2023-01-28 04:30:49,009 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 5267 transitions. [2023-01-28 04:30:49,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 5267 transitions. [2023-01-28 04:30:49,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:30:49,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 5267 transitions. [2023-01-28 04:30:49,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 181.6206896551724) internal successors, (5267), 29 states have internal predecessors, (5267), 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 04:30:49,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 420.0) internal successors, (12600), 30 states have internal predecessors, (12600), 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 04:30:49,022 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 420.0) internal successors, (12600), 30 states have internal predecessors, (12600), 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 04:30:49,022 INFO L175 Difference]: Start difference. First operand has 141 places, 228 transitions, 2978 flow. Second operand 29 states and 5267 transitions. [2023-01-28 04:30:49,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 913 transitions, 11117 flow [2023-01-28 04:30:52,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 913 transitions, 10870 flow, removed 42 selfloop flow, removed 4 redundant places. [2023-01-28 04:30:52,800 INFO L231 Difference]: Finished difference. Result has 182 places, 471 transitions, 7007 flow [2023-01-28 04:30:52,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=2861, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7007, PETRI_PLACES=182, PETRI_TRANSITIONS=471} [2023-01-28 04:30:52,801 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 140 predicate places. [2023-01-28 04:30:52,801 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 471 transitions, 7007 flow [2023-01-28 04:30:52,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 171.94117647058823) internal successors, (2923), 17 states have internal predecessors, (2923), 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 04:30:52,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:30:52,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:30:52,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 04:30:53,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 04:30:53,006 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:30:53,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:30:53,007 INFO L85 PathProgramCache]: Analyzing trace with hash 417644422, now seen corresponding path program 5 times [2023-01-28 04:30:53,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:30:53,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336033326] [2023-01-28 04:30:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:30:53,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:30:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:30:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:30:53,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:30:53,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336033326] [2023-01-28 04:30:53,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336033326] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:30:53,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069608929] [2023-01-28 04:30:53,278 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:30:53,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:30:53,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:30:53,293 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:30:53,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 04:30:53,408 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:30:53,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:30:53,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 04:30:53,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:30:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:30:53,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:30:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:30:53,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069608929] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:30:53,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:30:53,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 6] total 16 [2023-01-28 04:30:53,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205399833] [2023-01-28 04:30:53,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:30:53,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 04:30:53,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:30:53,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 04:30:53,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-01-28 04:30:53,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 420 [2023-01-28 04:30:53,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 471 transitions, 7007 flow. Second operand has 8 states, 8 states have (on average 179.875) internal successors, (1439), 8 states have internal predecessors, (1439), 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 04:30:53,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:30:53,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 420 [2023-01-28 04:30:53,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:06,645 INFO L130 PetriNetUnfolder]: 55583/83322 cut-off events. [2023-01-28 04:31:06,645 INFO L131 PetriNetUnfolder]: For 801227/801227 co-relation queries the response was YES. [2023-01-28 04:31:07,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468428 conditions, 83322 events. 55583/83322 cut-off events. For 801227/801227 co-relation queries the response was YES. Maximal size of possible extension queue 3392. Compared 643358 event pairs, 10228 based on Foata normal form. 288/83608 useless extension candidates. Maximal degree in co-relation 461270. Up to 24841 conditions per place. [2023-01-28 04:31:08,033 INFO L137 encePairwiseOnDemand]: 408/420 looper letters, 496 selfloop transitions, 328 changer transitions 14/838 dead transitions. [2023-01-28 04:31:08,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 838 transitions, 13046 flow [2023-01-28 04:31:08,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 04:31:08,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 04:31:08,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1948 transitions. [2023-01-28 04:31:08,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638095238095238 [2023-01-28 04:31:08,035 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1948 transitions. [2023-01-28 04:31:08,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1948 transitions. [2023-01-28 04:31:08,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:08,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1948 transitions. [2023-01-28 04:31:08,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 194.8) internal successors, (1948), 10 states have internal predecessors, (1948), 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 04:31:08,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 420.0) internal successors, (4620), 11 states have internal predecessors, (4620), 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 04:31:08,039 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 420.0) internal successors, (4620), 11 states have internal predecessors, (4620), 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 04:31:08,039 INFO L175 Difference]: Start difference. First operand has 182 places, 471 transitions, 7007 flow. Second operand 10 states and 1948 transitions. [2023-01-28 04:31:08,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 838 transitions, 13046 flow [2023-01-28 04:31:31,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 838 transitions, 12366 flow, removed 283 selfloop flow, removed 3 redundant places. [2023-01-28 04:31:31,240 INFO L231 Difference]: Finished difference. Result has 194 places, 606 transitions, 9816 flow [2023-01-28 04:31:31,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=6631, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9816, PETRI_PLACES=194, PETRI_TRANSITIONS=606} [2023-01-28 04:31:31,240 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 152 predicate places. [2023-01-28 04:31:31,240 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 606 transitions, 9816 flow [2023-01-28 04:31:31,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 179.875) internal successors, (1439), 8 states have internal predecessors, (1439), 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 04:31:31,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:31,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:31:31,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 04:31:31,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 04:31:31,445 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:31:31,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:31,445 INFO L85 PathProgramCache]: Analyzing trace with hash 134795650, now seen corresponding path program 6 times [2023-01-28 04:31:31,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:31,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528626936] [2023-01-28 04:31:31,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:31,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:31:31,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:31,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528626936] [2023-01-28 04:31:31,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528626936] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:31:31,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018049212] [2023-01-28 04:31:31,680 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:31:31,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:31:31,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:31:31,681 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:31:31,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 04:31:31,813 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:31:31,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:31:31,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 04:31:31,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:31:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:31:31,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:31:32,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:31:32,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018049212] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:31:32,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:31:32,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5] total 15 [2023-01-28 04:31:32,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51548859] [2023-01-28 04:31:32,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:32,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 04:31:32,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:32,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 04:31:32,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-01-28 04:31:32,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 420 [2023-01-28 04:31:32,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 606 transitions, 9816 flow. Second operand has 8 states, 8 states have (on average 179.875) internal successors, (1439), 8 states have internal predecessors, (1439), 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 04:31:32,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:32,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 420 [2023-01-28 04:31:32,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:42,229 INFO L130 PetriNetUnfolder]: 41247/60598 cut-off events. [2023-01-28 04:31:42,229 INFO L131 PetriNetUnfolder]: For 693625/693625 co-relation queries the response was YES. [2023-01-28 04:31:43,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362765 conditions, 60598 events. 41247/60598 cut-off events. For 693625/693625 co-relation queries the response was YES. Maximal size of possible extension queue 2465. Compared 430731 event pairs, 7858 based on Foata normal form. 1388/61984 useless extension candidates. Maximal degree in co-relation 355822. Up to 24977 conditions per place. [2023-01-28 04:31:43,384 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 461 selfloop transitions, 330 changer transitions 0/791 dead transitions. [2023-01-28 04:31:43,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 791 transitions, 13306 flow [2023-01-28 04:31:43,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:31:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:31:43,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1737 transitions. [2023-01-28 04:31:43,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595238095238095 [2023-01-28 04:31:43,386 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1737 transitions. [2023-01-28 04:31:43,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1737 transitions. [2023-01-28 04:31:43,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:43,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1737 transitions. [2023-01-28 04:31:43,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 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 04:31:43,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 420.0) internal successors, (4200), 10 states have internal predecessors, (4200), 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 04:31:43,411 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 420.0) internal successors, (4200), 10 states have internal predecessors, (4200), 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 04:31:43,411 INFO L175 Difference]: Start difference. First operand has 194 places, 606 transitions, 9816 flow. Second operand 9 states and 1737 transitions. [2023-01-28 04:31:43,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 791 transitions, 13306 flow [2023-01-28 04:31:59,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 791 transitions, 12897 flow, removed 190 selfloop flow, removed 2 redundant places. [2023-01-28 04:31:59,445 INFO L231 Difference]: Finished difference. Result has 201 places, 617 transitions, 10488 flow [2023-01-28 04:31:59,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=9285, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10488, PETRI_PLACES=201, PETRI_TRANSITIONS=617} [2023-01-28 04:31:59,446 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2023-01-28 04:31:59,446 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 617 transitions, 10488 flow [2023-01-28 04:31:59,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 179.875) internal successors, (1439), 8 states have internal predecessors, (1439), 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 04:31:59,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:59,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:31:59,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 04:31:59,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:31:59,650 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:31:59,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:59,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1448728976, now seen corresponding path program 7 times [2023-01-28 04:31:59,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:59,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447248427] [2023-01-28 04:31:59,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:59,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:31:59,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:59,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447248427] [2023-01-28 04:31:59,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447248427] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:31:59,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:31:59,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:31:59,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286998133] [2023-01-28 04:31:59,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:31:59,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:31:59,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:59,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:31:59,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-01-28 04:31:59,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 420 [2023-01-28 04:31:59,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 617 transitions, 10488 flow. Second operand has 6 states, 6 states have (on average 179.16666666666666) internal successors, (1075), 6 states have internal predecessors, (1075), 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 04:31:59,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:59,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 420 [2023-01-28 04:31:59,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:32:10,144 INFO L130 PetriNetUnfolder]: 41672/60924 cut-off events. [2023-01-28 04:32:10,145 INFO L131 PetriNetUnfolder]: For 718443/718443 co-relation queries the response was YES. [2023-01-28 04:32:10,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365245 conditions, 60924 events. 41672/60924 cut-off events. For 718443/718443 co-relation queries the response was YES. Maximal size of possible extension queue 2362. Compared 424766 event pairs, 10407 based on Foata normal form. 1350/62272 useless extension candidates. Maximal degree in co-relation 360715. Up to 27439 conditions per place. [2023-01-28 04:32:11,320 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 569 selfloop transitions, 345 changer transitions 16/930 dead transitions. [2023-01-28 04:32:11,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 930 transitions, 14930 flow [2023-01-28 04:32:11,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 04:32:11,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 04:32:11,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1921 transitions. [2023-01-28 04:32:11,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573809523809524 [2023-01-28 04:32:11,322 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1921 transitions. [2023-01-28 04:32:11,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1921 transitions. [2023-01-28 04:32:11,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:32:11,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1921 transitions. [2023-01-28 04:32:11,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 192.1) internal successors, (1921), 10 states have internal predecessors, (1921), 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 04:32:11,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 420.0) internal successors, (4620), 11 states have internal predecessors, (4620), 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 04:32:11,326 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 420.0) internal successors, (4620), 11 states have internal predecessors, (4620), 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 04:32:11,326 INFO L175 Difference]: Start difference. First operand has 201 places, 617 transitions, 10488 flow. Second operand 10 states and 1921 transitions. [2023-01-28 04:32:11,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 930 transitions, 14930 flow [2023-01-28 04:32:23,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 930 transitions, 13916 flow, removed 61 selfloop flow, removed 18 redundant places. [2023-01-28 04:32:23,894 INFO L231 Difference]: Finished difference. Result has 195 places, 674 transitions, 11215 flow [2023-01-28 04:32:23,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=9036, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11215, PETRI_PLACES=195, PETRI_TRANSITIONS=674} [2023-01-28 04:32:23,895 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 153 predicate places. [2023-01-28 04:32:23,895 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 674 transitions, 11215 flow [2023-01-28 04:32:23,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 179.16666666666666) internal successors, (1075), 6 states have internal predecessors, (1075), 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 04:32:23,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:32:23,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:32:23,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 04:32:23,895 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:32:23,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:32:23,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1389569998, now seen corresponding path program 8 times [2023-01-28 04:32:23,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:32:23,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428025159] [2023-01-28 04:32:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:32:23,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:32:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:32:24,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:32:24,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428025159] [2023-01-28 04:32:24,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428025159] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:32:24,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:32:24,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:32:24,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713173399] [2023-01-28 04:32:24,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:32:24,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:32:24,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:32:24,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:32:24,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 04:32:24,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 420 [2023-01-28 04:32:24,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 674 transitions, 11215 flow. Second operand has 6 states, 6 states have (on average 179.16666666666666) internal successors, (1075), 6 states have internal predecessors, (1075), 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 04:32:24,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:32:24,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 420 [2023-01-28 04:32:24,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:32:34,522 INFO L130 PetriNetUnfolder]: 41800/61210 cut-off events. [2023-01-28 04:32:34,523 INFO L131 PetriNetUnfolder]: For 689343/689343 co-relation queries the response was YES. [2023-01-28 04:32:35,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366155 conditions, 61210 events. 41800/61210 cut-off events. For 689343/689343 co-relation queries the response was YES. Maximal size of possible extension queue 2382. Compared 427813 event pairs, 13356 based on Foata normal form. 158/61366 useless extension candidates. Maximal degree in co-relation 358977. Up to 60114 conditions per place. [2023-01-28 04:32:35,448 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 616 selfloop transitions, 78 changer transitions 35/729 dead transitions. [2023-01-28 04:32:35,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 729 transitions, 13211 flow [2023-01-28 04:32:35,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 04:32:35,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 04:32:35,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1304 transitions. [2023-01-28 04:32:35,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435374149659864 [2023-01-28 04:32:35,450 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1304 transitions. [2023-01-28 04:32:35,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1304 transitions. [2023-01-28 04:32:35,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:32:35,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1304 transitions. [2023-01-28 04:32:35,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 186.28571428571428) internal successors, (1304), 7 states have internal predecessors, (1304), 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 04:32:35,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 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 04:32:35,452 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 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 04:32:35,452 INFO L175 Difference]: Start difference. First operand has 195 places, 674 transitions, 11215 flow. Second operand 7 states and 1304 transitions. [2023-01-28 04:32:35,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 729 transitions, 13211 flow [2023-01-28 04:32:48,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 729 transitions, 12919 flow, removed 32 selfloop flow, removed 3 redundant places. [2023-01-28 04:32:48,115 INFO L231 Difference]: Finished difference. Result has 199 places, 670 transitions, 11023 flow [2023-01-28 04:32:48,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=10929, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11023, PETRI_PLACES=199, PETRI_TRANSITIONS=670} [2023-01-28 04:32:48,115 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2023-01-28 04:32:48,115 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 670 transitions, 11023 flow [2023-01-28 04:32:48,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 179.16666666666666) internal successors, (1075), 6 states have internal predecessors, (1075), 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 04:32:48,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:32:48,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:32:48,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-28 04:32:48,116 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:32:48,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:32:48,116 INFO L85 PathProgramCache]: Analyzing trace with hash -21062198, now seen corresponding path program 9 times [2023-01-28 04:32:48,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:32:48,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394811604] [2023-01-28 04:32:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:32:48,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:32:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:32:48,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:32:48,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394811604] [2023-01-28 04:32:48,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394811604] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:32:48,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:32:48,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:32:48,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870879728] [2023-01-28 04:32:48,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:32:48,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:32:48,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:32:48,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:32:48,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-01-28 04:32:48,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2023-01-28 04:32:48,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 670 transitions, 11023 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:32:48,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:32:48,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2023-01-28 04:32:48,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:32:57,808 INFO L130 PetriNetUnfolder]: 38600/56104 cut-off events. [2023-01-28 04:32:57,809 INFO L131 PetriNetUnfolder]: For 621315/621315 co-relation queries the response was YES. [2023-01-28 04:32:58,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340561 conditions, 56104 events. 38600/56104 cut-off events. For 621315/621315 co-relation queries the response was YES. Maximal size of possible extension queue 2110. Compared 381594 event pairs, 11452 based on Foata normal form. 544/56646 useless extension candidates. Maximal degree in co-relation 339559. Up to 51966 conditions per place. [2023-01-28 04:32:58,535 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 592 selfloop transitions, 148 changer transitions 2/742 dead transitions. [2023-01-28 04:32:58,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 742 transitions, 13371 flow [2023-01-28 04:32:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 04:32:58,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 04:32:58,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1155 transitions. [2023-01-28 04:32:58,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-01-28 04:32:58,537 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1155 transitions. [2023-01-28 04:32:58,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1155 transitions. [2023-01-28 04:32:58,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:32:58,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1155 transitions. [2023-01-28 04:32:58,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 192.5) internal successors, (1155), 6 states have internal predecessors, (1155), 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 04:32:58,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 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 04:32:58,539 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 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 04:32:58,539 INFO L175 Difference]: Start difference. First operand has 199 places, 670 transitions, 11023 flow. Second operand 6 states and 1155 transitions. [2023-01-28 04:32:58,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 742 transitions, 13371 flow [2023-01-28 04:33:11,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 742 transitions, 12927 flow, removed 142 selfloop flow, removed 5 redundant places. [2023-01-28 04:33:11,808 INFO L231 Difference]: Finished difference. Result has 198 places, 682 transitions, 11360 flow [2023-01-28 04:33:11,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=10575, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11360, PETRI_PLACES=198, PETRI_TRANSITIONS=682} [2023-01-28 04:33:11,809 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 156 predicate places. [2023-01-28 04:33:11,809 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 682 transitions, 11360 flow [2023-01-28 04:33:11,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 04:33:11,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:33:11,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:33:11,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-28 04:33:11,810 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:33:11,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:33:11,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1569054635, now seen corresponding path program 1 times [2023-01-28 04:33:11,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:33:11,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934324439] [2023-01-28 04:33:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:33:11,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:33:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:33:11,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:33:11,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:33:11,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934324439] [2023-01-28 04:33:11,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934324439] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:33:11,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:33:11,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 04:33:11,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72758836] [2023-01-28 04:33:11,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:33:11,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:33:11,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:33:11,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:33:11,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:33:11,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 420 [2023-01-28 04:33:11,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 682 transitions, 11360 flow. Second operand has 5 states, 5 states have (on average 192.8) internal successors, (964), 5 states have internal predecessors, (964), 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 04:33:11,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:33:11,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 420 [2023-01-28 04:33:11,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:33:25,047 INFO L130 PetriNetUnfolder]: 52129/76065 cut-off events. [2023-01-28 04:33:25,047 INFO L131 PetriNetUnfolder]: For 850680/852570 co-relation queries the response was YES. [2023-01-28 04:33:25,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454232 conditions, 76065 events. 52129/76065 cut-off events. For 850680/852570 co-relation queries the response was YES. Maximal size of possible extension queue 3147. Compared 560101 event pairs, 8634 based on Foata normal form. 3287/79014 useless extension candidates. Maximal degree in co-relation 454142. Up to 29059 conditions per place. [2023-01-28 04:33:26,293 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 1008 selfloop transitions, 220 changer transitions 2/1346 dead transitions. [2023-01-28 04:33:26,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 1346 transitions, 24810 flow [2023-01-28 04:33:26,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 04:33:26,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 04:33:26,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1206 transitions. [2023-01-28 04:33:26,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2023-01-28 04:33:26,295 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1206 transitions. [2023-01-28 04:33:26,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1206 transitions. [2023-01-28 04:33:26,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:33:26,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1206 transitions. [2023-01-28 04:33:26,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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 04:33:26,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 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 04:33:26,297 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 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 04:33:26,297 INFO L175 Difference]: Start difference. First operand has 198 places, 682 transitions, 11360 flow. Second operand 6 states and 1206 transitions. [2023-01-28 04:33:26,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 1346 transitions, 24810 flow [2023-01-28 04:33:45,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 1346 transitions, 23541 flow, removed 474 selfloop flow, removed 6 redundant places. [2023-01-28 04:33:45,836 INFO L231 Difference]: Finished difference. Result has 199 places, 773 transitions, 12766 flow [2023-01-28 04:33:45,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=10751, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12766, PETRI_PLACES=199, PETRI_TRANSITIONS=773} [2023-01-28 04:33:45,836 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2023-01-28 04:33:45,836 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 773 transitions, 12766 flow [2023-01-28 04:33:45,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.8) internal successors, (964), 5 states have internal predecessors, (964), 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 04:33:45,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:33:45,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:33:45,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-28 04:33:45,837 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:33:45,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:33:45,837 INFO L85 PathProgramCache]: Analyzing trace with hash -658408053, now seen corresponding path program 2 times [2023-01-28 04:33:45,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:33:45,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413644339] [2023-01-28 04:33:45,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:33:45,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:33:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:33:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:33:46,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:33:46,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413644339] [2023-01-28 04:33:46,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413644339] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:33:46,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381643396] [2023-01-28 04:33:46,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:33:46,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:46,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:33:46,045 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:33:46,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 04:33:46,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:33:46,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:33:46,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:33:46,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:33:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:33:46,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 04:33:46,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381643396] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:33:46,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 04:33:46,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2023-01-28 04:33:46,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410688288] [2023-01-28 04:33:46,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:33:46,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:33:46,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:33:46,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:33:46,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-01-28 04:33:46,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 420 [2023-01-28 04:33:46,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 773 transitions, 12766 flow. Second operand has 6 states, 6 states have (on average 178.5) internal successors, (1071), 6 states have internal predecessors, (1071), 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 04:33:46,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:33:46,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 420 [2023-01-28 04:33:46,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:34:09,724 INFO L130 PetriNetUnfolder]: 88853/127326 cut-off events. [2023-01-28 04:34:09,724 INFO L131 PetriNetUnfolder]: For 1553122/1553122 co-relation queries the response was YES. [2023-01-28 04:34:11,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 819598 conditions, 127326 events. 88853/127326 cut-off events. For 1553122/1553122 co-relation queries the response was YES. Maximal size of possible extension queue 4717. Compared 940162 event pairs, 6222 based on Foata normal form. 2118/129443 useless extension candidates. Maximal degree in co-relation 819506. Up to 37655 conditions per place. [2023-01-28 04:34:12,305 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 1250 selfloop transitions, 890 changer transitions 64/2204 dead transitions. [2023-01-28 04:34:12,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 2204 transitions, 37585 flow [2023-01-28 04:34:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 04:34:12,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 04:34:12,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2094 transitions. [2023-01-28 04:34:12,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45324675324675323 [2023-01-28 04:34:12,307 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2094 transitions. [2023-01-28 04:34:12,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2094 transitions. [2023-01-28 04:34:12,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:34:12,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2094 transitions. [2023-01-28 04:34:12,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 190.36363636363637) internal successors, (2094), 11 states have internal predecessors, (2094), 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 04:34:12,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 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 04:34:12,312 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 420.0) internal successors, (5040), 12 states have internal predecessors, (5040), 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 04:34:12,312 INFO L175 Difference]: Start difference. First operand has 199 places, 773 transitions, 12766 flow. Second operand 11 states and 2094 transitions. [2023-01-28 04:34:12,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 2204 transitions, 37585 flow [2023-01-28 04:35:20,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 2204 transitions, 37470 flow, removed 57 selfloop flow, removed 1 redundant places. [2023-01-28 04:35:20,256 INFO L231 Difference]: Finished difference. Result has 218 places, 1405 transitions, 26739 flow [2023-01-28 04:35:20,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=12350, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=26739, PETRI_PLACES=218, PETRI_TRANSITIONS=1405} [2023-01-28 04:35:20,257 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 176 predicate places. [2023-01-28 04:35:20,257 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 1405 transitions, 26739 flow [2023-01-28 04:35:20,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 178.5) internal successors, (1071), 6 states have internal predecessors, (1071), 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 04:35:20,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:35:20,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:35:20,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-28 04:35:20,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-01-28 04:35:20,463 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:35:20,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:35:20,463 INFO L85 PathProgramCache]: Analyzing trace with hash -223242563, now seen corresponding path program 3 times [2023-01-28 04:35:20,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:35:20,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466738563] [2023-01-28 04:35:20,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:35:20,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:35:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:35:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:35:20,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:35:20,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466738563] [2023-01-28 04:35:20,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466738563] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:35:20,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312646918] [2023-01-28 04:35:20,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:35:20,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:35:20,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:35:20,698 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:35:20,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 04:35:20,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:35:20,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:35:20,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 04:35:20,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:35:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:35:21,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 04:35:21,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312646918] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:35:21,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 04:35:21,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2023-01-28 04:35:21,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973349648] [2023-01-28 04:35:21,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:35:21,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 04:35:21,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:35:21,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 04:35:21,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-01-28 04:35:21,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 420 [2023-01-28 04:35:21,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 1405 transitions, 26739 flow. Second operand has 8 states, 8 states have (on average 180.125) internal successors, (1441), 8 states have internal predecessors, (1441), 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 04:35:21,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:35:21,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 420 [2023-01-28 04:35:21,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand