/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:37:39,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:37:39,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:37:39,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:37:39,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:37:39,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:37:39,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:37:39,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:37:39,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:37:39,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:37:39,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:37:39,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:37:39,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:37:39,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:37:39,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:37:39,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:37:39,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:37:39,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:37:39,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:37:39,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:37:39,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:37:39,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:37:39,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:37:39,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:37:39,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:37:39,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:37:39,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:37:39,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:37:39,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:37:39,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:37:39,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:37:39,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:37:39,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:37:39,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:37:39,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:37:39,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:37:39,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:37:39,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:37:39,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:37:39,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:37:39,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:37:39,628 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 09:37:39,646 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:37:39,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:37:39,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:37:39,647 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:37:39,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:37:39,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:37:39,648 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:37:39,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:37:39,654 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:37:39,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:37:39,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:37:39,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:37:39,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:37:39,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:37:39,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:37:39,656 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:37:39,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:37:39,656 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:37:39,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:37:39,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:37:39,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:37:39,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:37:39,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:37:39,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:37:39,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:37:39,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:37:39,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:37:39,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:37:39,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:37:39,658 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:37:39,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:37:39,658 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:37:39,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:37:39,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:37:39,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:37:39,900 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:37:39,900 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:37:39,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2023-01-28 09:37:41,003 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:37:41,177 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:37:41,177 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2023-01-28 09:37:41,183 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d055e5113/f06c23d3743c4714b93004eacd51584a/FLAG80695c6bb [2023-01-28 09:37:41,195 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d055e5113/f06c23d3743c4714b93004eacd51584a [2023-01-28 09:37:41,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:37:41,198 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:37:41,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:37:41,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:37:41,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:37:41,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:37:41" (1/1) ... [2023-01-28 09:37:41,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322750b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:41, skipping insertion in model container [2023-01-28 09:37:41,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:37:41" (1/1) ... [2023-01-28 09:37:41,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:37:41,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:37:41,368 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/parallel-bakery-3.wvr.c[5426,5439] [2023-01-28 09:37:41,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:37:41,379 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:37:41,402 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/parallel-bakery-3.wvr.c[5426,5439] [2023-01-28 09:37:41,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:37:41,409 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:37:41,409 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:37:41,415 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:37:41,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:41 WrapperNode [2023-01-28 09:37:41,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:37:41,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:37:41,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:37:41,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:37:41,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:41" (1/1) ... [2023-01-28 09:37:41,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:41" (1/1) ... [2023-01-28 09:37:41,451 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 265 [2023-01-28 09:37:41,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:37:41,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:37:41,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:37:41,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:37:41,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:41" (1/1) ... [2023-01-28 09:37:41,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:41" (1/1) ... [2023-01-28 09:37:41,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:41" (1/1) ... [2023-01-28 09:37:41,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:41" (1/1) ... [2023-01-28 09:37:41,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:41" (1/1) ... [2023-01-28 09:37:41,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:41" (1/1) ... [2023-01-28 09:37:41,472 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:41" (1/1) ... [2023-01-28 09:37:41,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:41" (1/1) ... [2023-01-28 09:37:41,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:37:41,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:37:41,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:37:41,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:37:41,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:41" (1/1) ... [2023-01-28 09:37:41,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:37:41,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:37:41,506 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 09:37:41,518 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 09:37:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:37:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:37:41,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:37:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:37:41,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:37:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 09:37:41,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 09:37:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:37:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:37:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:37:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 09:37:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 09:37:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:37:41,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:37:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:37:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:37:41,551 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 09:37:41,656 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:37:41,658 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:37:41,971 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:37:42,116 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:37:42,116 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 09:37:42,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:37:42 BoogieIcfgContainer [2023-01-28 09:37:42,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:37:42,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:37:42,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:37:42,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:37:42,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:37:41" (1/3) ... [2023-01-28 09:37:42,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197fc5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:37:42, skipping insertion in model container [2023-01-28 09:37:42,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:41" (2/3) ... [2023-01-28 09:37:42,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197fc5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:37:42, skipping insertion in model container [2023-01-28 09:37:42,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:37:42" (3/3) ... [2023-01-28 09:37:42,125 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2023-01-28 09:37:42,139 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:37:42,139 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:37:42,140 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:37:42,195 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 09:37:42,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 155 transitions, 334 flow [2023-01-28 09:37:42,295 INFO L130 PetriNetUnfolder]: 2/152 cut-off events. [2023-01-28 09:37:42,296 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:37:42,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 152 events. 2/152 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-01-28 09:37:42,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 155 transitions, 334 flow [2023-01-28 09:37:42,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 142 transitions, 302 flow [2023-01-28 09:37:42,311 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:37:42,326 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 142 transitions, 302 flow [2023-01-28 09:37:42,328 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 142 transitions, 302 flow [2023-01-28 09:37:42,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 142 transitions, 302 flow [2023-01-28 09:37:42,363 INFO L130 PetriNetUnfolder]: 2/142 cut-off events. [2023-01-28 09:37:42,363 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:37:42,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 142 events. 2/142 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 105 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-01-28 09:37:42,365 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-01-28 09:37:46,124 INFO L134 LiptonReduction]: Checked pairs total: 20861 [2023-01-28 09:37:46,124 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-01-28 09:37:46,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:37:46,153 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;@89ec01, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:37:46,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 09:37:46,175 INFO L130 PetriNetUnfolder]: 0/48 cut-off events. [2023-01-28 09:37:46,176 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:37:46,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:37:46,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:37:46,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:37:46,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:37:46,184 INFO L85 PathProgramCache]: Analyzing trace with hash -685701629, now seen corresponding path program 1 times [2023-01-28 09:37:46,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:37:46,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849045113] [2023-01-28 09:37:46,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:37:46,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:37:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:37:46,989 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 09:37:46,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:37:46,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849045113] [2023-01-28 09:37:46,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849045113] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:37:46,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:37:46,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:37:46,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052445449] [2023-01-28 09:37:46,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:37:47,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:37:47,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:37:47,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:37:47,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:37:47,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-28 09:37:47,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 116 flow. Second operand has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:47,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:37:47,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-28 09:37:47,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:37:48,123 INFO L130 PetriNetUnfolder]: 4666/7168 cut-off events. [2023-01-28 09:37:48,123 INFO L131 PetriNetUnfolder]: For 394/394 co-relation queries the response was YES. [2023-01-28 09:37:48,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14639 conditions, 7168 events. 4666/7168 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 41262 event pairs, 1653 based on Foata normal form. 1/7108 useless extension candidates. Maximal degree in co-relation 12818. Up to 2475 conditions per place. [2023-01-28 09:37:48,163 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 147 selfloop transitions, 15 changer transitions 19/193 dead transitions. [2023-01-28 09:37:48,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 193 transitions, 820 flow [2023-01-28 09:37:48,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 09:37:48,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 09:37:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1447 transitions. [2023-01-28 09:37:48,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158645276292335 [2023-01-28 09:37:48,182 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1447 transitions. [2023-01-28 09:37:48,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1447 transitions. [2023-01-28 09:37:48,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:37:48,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1447 transitions. [2023-01-28 09:37:48,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.54545454545453) internal successors, (1447), 11 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:48,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:48,201 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:48,203 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 116 flow. Second operand 11 states and 1447 transitions. [2023-01-28 09:37:48,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 193 transitions, 820 flow [2023-01-28 09:37:48,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 193 transitions, 772 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 09:37:48,214 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 196 flow [2023-01-28 09:37:48,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=196, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-01-28 09:37:48,219 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2023-01-28 09:37:48,219 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 196 flow [2023-01-28 09:37:48,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:48,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:37:48,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:37:48,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:37:48,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:37:48,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:37:48,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1882952335, now seen corresponding path program 2 times [2023-01-28 09:37:48,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:37:48,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593804488] [2023-01-28 09:37:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:37:48,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:37:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:37:48,983 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 09:37:48,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:37:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593804488] [2023-01-28 09:37:48,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593804488] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:37:48,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:37:48,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:37:48,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395790721] [2023-01-28 09:37:48,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:37:48,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:37:48,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:37:48,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:37:48,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:37:48,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-28 09:37:48,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:48,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:37:48,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-28 09:37:48,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:37:50,673 INFO L130 PetriNetUnfolder]: 11054/18913 cut-off events. [2023-01-28 09:37:50,674 INFO L131 PetriNetUnfolder]: For 301/309 co-relation queries the response was YES. [2023-01-28 09:37:50,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38130 conditions, 18913 events. 11054/18913 cut-off events. For 301/309 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 146935 event pairs, 2687 based on Foata normal form. 190/18773 useless extension candidates. Maximal degree in co-relation 38108. Up to 6944 conditions per place. [2023-01-28 09:37:50,831 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 138 selfloop transitions, 37 changer transitions 0/203 dead transitions. [2023-01-28 09:37:50,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 203 transitions, 830 flow [2023-01-28 09:37:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:37:50,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:37:50,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1213 transitions. [2023-01-28 09:37:50,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285403050108932 [2023-01-28 09:37:50,835 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1213 transitions. [2023-01-28 09:37:50,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1213 transitions. [2023-01-28 09:37:50,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:37:50,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1213 transitions. [2023-01-28 09:37:50,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.77777777777777) internal successors, (1213), 9 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:50,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:50,843 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:50,843 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 196 flow. Second operand 9 states and 1213 transitions. [2023-01-28 09:37:50,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 203 transitions, 830 flow [2023-01-28 09:37:50,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 203 transitions, 828 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 09:37:50,856 INFO L231 Difference]: Finished difference. Result has 80 places, 104 transitions, 460 flow [2023-01-28 09:37:50,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=460, PETRI_PLACES=80, PETRI_TRANSITIONS=104} [2023-01-28 09:37:50,858 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 21 predicate places. [2023-01-28 09:37:50,858 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 104 transitions, 460 flow [2023-01-28 09:37:50,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:50,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:37:50,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:37:50,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 09:37:50,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:37:50,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:37:50,859 INFO L85 PathProgramCache]: Analyzing trace with hash -396490139, now seen corresponding path program 3 times [2023-01-28 09:37:50,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:37:50,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914189597] [2023-01-28 09:37:50,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:37:50,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:37:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:37:51,044 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 09:37:51,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:37:51,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914189597] [2023-01-28 09:37:51,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914189597] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:37:51,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:37:51,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:37:51,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30616338] [2023-01-28 09:37:51,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:37:51,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:37:51,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:37:51,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:37:51,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:37:51,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 255 [2023-01-28 09:37:51,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 104 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:51,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:37:51,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 255 [2023-01-28 09:37:51,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:37:52,424 INFO L130 PetriNetUnfolder]: 7985/14097 cut-off events. [2023-01-28 09:37:52,424 INFO L131 PetriNetUnfolder]: For 9371/9798 co-relation queries the response was YES. [2023-01-28 09:37:52,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36629 conditions, 14097 events. 7985/14097 cut-off events. For 9371/9798 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 109271 event pairs, 5244 based on Foata normal form. 450/13895 useless extension candidates. Maximal degree in co-relation 26097. Up to 10070 conditions per place. [2023-01-28 09:37:52,496 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 84 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-01-28 09:37:52,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 131 transitions, 756 flow [2023-01-28 09:37:52,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:37:52,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:37:52,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-01-28 09:37:52,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5594771241830065 [2023-01-28 09:37:52,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-01-28 09:37:52,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-01-28 09:37:52,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:37:52,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-01-28 09:37:52,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:52,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:52,501 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:52,501 INFO L175 Difference]: Start difference. First operand has 80 places, 104 transitions, 460 flow. Second operand 3 states and 428 transitions. [2023-01-28 09:37:52,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 131 transitions, 756 flow [2023-01-28 09:37:52,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 131 transitions, 756 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 09:37:52,540 INFO L231 Difference]: Finished difference. Result has 83 places, 103 transitions, 464 flow [2023-01-28 09:37:52,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=83, PETRI_TRANSITIONS=103} [2023-01-28 09:37:52,541 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 24 predicate places. [2023-01-28 09:37:52,541 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 103 transitions, 464 flow [2023-01-28 09:37:52,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:52,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:37:52,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:37:52,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 09:37:52,542 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:37:52,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:37:52,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1911915813, now seen corresponding path program 4 times [2023-01-28 09:37:52,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:37:52,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105900715] [2023-01-28 09:37:52,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:37:52,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:37:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:37:52,687 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 09:37:52,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:37:52,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105900715] [2023-01-28 09:37:52,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105900715] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:37:52,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:37:52,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:37:52,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736101276] [2023-01-28 09:37:52,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:37:52,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:37:52,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:37:52,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:37:52,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:37:52,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 255 [2023-01-28 09:37:52,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 103 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:52,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:37:52,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 255 [2023-01-28 09:37:52,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:37:53,985 INFO L130 PetriNetUnfolder]: 8352/15087 cut-off events. [2023-01-28 09:37:53,986 INFO L131 PetriNetUnfolder]: For 10572/10975 co-relation queries the response was YES. [2023-01-28 09:37:54,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39577 conditions, 15087 events. 8352/15087 cut-off events. For 10572/10975 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 121387 event pairs, 5810 based on Foata normal form. 451/14808 useless extension candidates. Maximal degree in co-relation 27830. Up to 10310 conditions per place. [2023-01-28 09:37:54,186 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 85 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2023-01-28 09:37:54,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 132 transitions, 766 flow [2023-01-28 09:37:54,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:37:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:37:54,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-01-28 09:37:54,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5594771241830065 [2023-01-28 09:37:54,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-01-28 09:37:54,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-01-28 09:37:54,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:37:54,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-01-28 09:37:54,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:54,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:54,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:54,198 INFO L175 Difference]: Start difference. First operand has 83 places, 103 transitions, 464 flow. Second operand 3 states and 428 transitions. [2023-01-28 09:37:54,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 132 transitions, 766 flow [2023-01-28 09:37:54,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 132 transitions, 762 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 09:37:54,257 INFO L231 Difference]: Finished difference. Result has 84 places, 103 transitions, 470 flow [2023-01-28 09:37:54,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=84, PETRI_TRANSITIONS=103} [2023-01-28 09:37:54,259 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 25 predicate places. [2023-01-28 09:37:54,259 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 103 transitions, 470 flow [2023-01-28 09:37:54,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:54,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:37:54,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:37:54,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 09:37:54,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:37:54,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:37:54,261 INFO L85 PathProgramCache]: Analyzing trace with hash -909351973, now seen corresponding path program 5 times [2023-01-28 09:37:54,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:37:54,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029155942] [2023-01-28 09:37:54,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:37:54,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:37:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:37:54,403 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 09:37:54,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:37:54,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029155942] [2023-01-28 09:37:54,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029155942] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:37:54,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:37:54,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:37:54,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645226817] [2023-01-28 09:37:54,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:37:54,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:37:54,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:37:54,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:37:54,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:37:54,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 255 [2023-01-28 09:37:54,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 103 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:54,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:37:54,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 255 [2023-01-28 09:37:54,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:37:55,801 INFO L130 PetriNetUnfolder]: 8350/15312 cut-off events. [2023-01-28 09:37:55,802 INFO L131 PetriNetUnfolder]: For 11435/11808 co-relation queries the response was YES. [2023-01-28 09:37:55,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41560 conditions, 15312 events. 8350/15312 cut-off events. For 11435/11808 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 123633 event pairs, 5801 based on Foata normal form. 366/14902 useless extension candidates. Maximal degree in co-relation 28969. Up to 10791 conditions per place. [2023-01-28 09:37:55,902 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 82 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2023-01-28 09:37:55,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 129 transitions, 754 flow [2023-01-28 09:37:55,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:37:55,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:37:55,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-01-28 09:37:55,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5594771241830065 [2023-01-28 09:37:55,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-01-28 09:37:55,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-01-28 09:37:55,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:37:55,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-01-28 09:37:55,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:55,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:55,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:55,907 INFO L175 Difference]: Start difference. First operand has 84 places, 103 transitions, 470 flow. Second operand 3 states and 428 transitions. [2023-01-28 09:37:55,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 129 transitions, 754 flow [2023-01-28 09:37:55,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 129 transitions, 750 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 09:37:55,948 INFO L231 Difference]: Finished difference. Result has 85 places, 103 transitions, 476 flow [2023-01-28 09:37:55,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=85, PETRI_TRANSITIONS=103} [2023-01-28 09:37:55,950 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 26 predicate places. [2023-01-28 09:37:55,950 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 103 transitions, 476 flow [2023-01-28 09:37:55,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:55,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:37:55,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:37:55,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 09:37:55,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:37:55,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:37:55,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1824534595, now seen corresponding path program 6 times [2023-01-28 09:37:55,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:37:55,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656420489] [2023-01-28 09:37:55,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:37:55,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:37:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:37:56,307 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 09:37:56,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:37:56,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656420489] [2023-01-28 09:37:56,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656420489] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:37:56,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:37:56,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:37:56,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982846792] [2023-01-28 09:37:56,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:37:56,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:37:56,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:37:56,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:37:56,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:37:56,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-28 09:37:56,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 103 transitions, 476 flow. Second operand has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:56,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:37:56,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-28 09:37:56,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:37:58,701 INFO L130 PetriNetUnfolder]: 18082/28043 cut-off events. [2023-01-28 09:37:58,701 INFO L131 PetriNetUnfolder]: For 22570/23192 co-relation queries the response was YES. [2023-01-28 09:37:58,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82612 conditions, 28043 events. 18082/28043 cut-off events. For 22570/23192 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 193012 event pairs, 6131 based on Foata normal form. 506/28130 useless extension candidates. Maximal degree in co-relation 48840. Up to 7851 conditions per place. [2023-01-28 09:37:58,835 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 262 selfloop transitions, 29 changer transitions 41/357 dead transitions. [2023-01-28 09:37:58,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 357 transitions, 2256 flow [2023-01-28 09:37:58,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 09:37:58,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 09:37:58,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1463 transitions. [2023-01-28 09:37:58,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215686274509804 [2023-01-28 09:37:58,839 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1463 transitions. [2023-01-28 09:37:58,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1463 transitions. [2023-01-28 09:37:58,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:37:58,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1463 transitions. [2023-01-28 09:37:58,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 133.0) internal successors, (1463), 11 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:58,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:58,846 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:58,846 INFO L175 Difference]: Start difference. First operand has 85 places, 103 transitions, 476 flow. Second operand 11 states and 1463 transitions. [2023-01-28 09:37:58,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 357 transitions, 2256 flow [2023-01-28 09:37:58,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 357 transitions, 2252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 09:37:58,916 INFO L231 Difference]: Finished difference. Result has 99 places, 128 transitions, 717 flow [2023-01-28 09:37:58,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=717, PETRI_PLACES=99, PETRI_TRANSITIONS=128} [2023-01-28 09:37:58,919 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 40 predicate places. [2023-01-28 09:37:58,919 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 128 transitions, 717 flow [2023-01-28 09:37:58,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:58,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:37:58,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:37:58,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 09:37:58,920 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:37:58,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:37:58,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1285316251, now seen corresponding path program 7 times [2023-01-28 09:37:58,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:37:58,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970655342] [2023-01-28 09:37:58,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:37:58,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:37:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:37:59,513 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 09:37:59,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:37:59,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970655342] [2023-01-28 09:37:59,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970655342] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:37:59,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:37:59,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:37:59,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213283064] [2023-01-28 09:37:59,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:37:59,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:37:59,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:37:59,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:37:59,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:37:59,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-28 09:37:59,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 128 transitions, 717 flow. Second operand has 7 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:59,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:37:59,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-28 09:37:59,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:38:01,822 INFO L130 PetriNetUnfolder]: 13978/25086 cut-off events. [2023-01-28 09:38:01,823 INFO L131 PetriNetUnfolder]: For 23764/24118 co-relation queries the response was YES. [2023-01-28 09:38:01,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74557 conditions, 25086 events. 13978/25086 cut-off events. For 23764/24118 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 207913 event pairs, 7108 based on Foata normal form. 218/24379 useless extension candidates. Maximal degree in co-relation 74485. Up to 17134 conditions per place. [2023-01-28 09:38:01,939 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 133 selfloop transitions, 28 changer transitions 0/214 dead transitions. [2023-01-28 09:38:01,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 214 transitions, 1417 flow [2023-01-28 09:38:01,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:38:01,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:38:01,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 910 transitions. [2023-01-28 09:38:01,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2023-01-28 09:38:01,943 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 910 transitions. [2023-01-28 09:38:01,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 910 transitions. [2023-01-28 09:38:01,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:38:01,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 910 transitions. [2023-01-28 09:38:01,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:01,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:01,948 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:01,948 INFO L175 Difference]: Start difference. First operand has 99 places, 128 transitions, 717 flow. Second operand 7 states and 910 transitions. [2023-01-28 09:38:01,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 214 transitions, 1417 flow [2023-01-28 09:38:02,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 214 transitions, 1411 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-28 09:38:02,236 INFO L231 Difference]: Finished difference. Result has 107 places, 155 transitions, 970 flow [2023-01-28 09:38:02,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=970, PETRI_PLACES=107, PETRI_TRANSITIONS=155} [2023-01-28 09:38:02,239 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 48 predicate places. [2023-01-28 09:38:02,239 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 155 transitions, 970 flow [2023-01-28 09:38:02,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:02,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:38:02,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:38:02,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 09:38:02,241 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:38:02,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:38:02,247 INFO L85 PathProgramCache]: Analyzing trace with hash 148963389, now seen corresponding path program 8 times [2023-01-28 09:38:02,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:38:02,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169127542] [2023-01-28 09:38:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:38:02,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:38:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:38:02,514 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 09:38:02,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:38:02,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169127542] [2023-01-28 09:38:02,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169127542] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:38:02,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:38:02,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:38:02,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588913800] [2023-01-28 09:38:02,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:38:02,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:38:02,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:38:02,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:38:02,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:38:02,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-28 09:38:02,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 155 transitions, 970 flow. Second operand has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:02,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:38:02,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-28 09:38:02,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:38:05,976 INFO L130 PetriNetUnfolder]: 22105/34134 cut-off events. [2023-01-28 09:38:05,976 INFO L131 PetriNetUnfolder]: For 48159/49735 co-relation queries the response was YES. [2023-01-28 09:38:06,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114966 conditions, 34134 events. 22105/34134 cut-off events. For 48159/49735 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 238816 event pairs, 8350 based on Foata normal form. 916/34559 useless extension candidates. Maximal degree in co-relation 109903. Up to 11640 conditions per place. [2023-01-28 09:38:06,200 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 256 selfloop transitions, 30 changer transitions 29/347 dead transitions. [2023-01-28 09:38:06,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 347 transitions, 2556 flow [2023-01-28 09:38:06,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 09:38:06,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 09:38:06,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1447 transitions. [2023-01-28 09:38:06,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158645276292335 [2023-01-28 09:38:06,206 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1447 transitions. [2023-01-28 09:38:06,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1447 transitions. [2023-01-28 09:38:06,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:38:06,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1447 transitions. [2023-01-28 09:38:06,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.54545454545453) internal successors, (1447), 11 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:06,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:06,225 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:06,225 INFO L175 Difference]: Start difference. First operand has 107 places, 155 transitions, 970 flow. Second operand 11 states and 1447 transitions. [2023-01-28 09:38:06,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 347 transitions, 2556 flow [2023-01-28 09:38:06,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 347 transitions, 2554 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-28 09:38:06,908 INFO L231 Difference]: Finished difference. Result has 121 places, 160 transitions, 1093 flow [2023-01-28 09:38:06,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1093, PETRI_PLACES=121, PETRI_TRANSITIONS=160} [2023-01-28 09:38:06,909 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 62 predicate places. [2023-01-28 09:38:06,909 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 160 transitions, 1093 flow [2023-01-28 09:38:06,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:06,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:38:06,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:38:06,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 09:38:06,910 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:38:06,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:38:06,910 INFO L85 PathProgramCache]: Analyzing trace with hash -436772047, now seen corresponding path program 9 times [2023-01-28 09:38:06,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:38:06,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583040764] [2023-01-28 09:38:06,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:38:06,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:38:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:38:07,548 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 09:38:07,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:38:07,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583040764] [2023-01-28 09:38:07,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583040764] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:38:07,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:38:07,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 09:38:07,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20639783] [2023-01-28 09:38:07,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:38:07,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:38:07,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:38:07,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:38:07,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-01-28 09:38:07,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-28 09:38:07,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 160 transitions, 1093 flow. Second operand has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:07,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:38:07,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-28 09:38:07,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:38:10,880 INFO L130 PetriNetUnfolder]: 16971/30843 cut-off events. [2023-01-28 09:38:10,881 INFO L131 PetriNetUnfolder]: For 46509/47101 co-relation queries the response was YES. [2023-01-28 09:38:10,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103352 conditions, 30843 events. 16971/30843 cut-off events. For 46509/47101 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 267662 event pairs, 6779 based on Foata normal form. 206/30019 useless extension candidates. Maximal degree in co-relation 103264. Up to 21490 conditions per place. [2023-01-28 09:38:11,064 INFO L137 encePairwiseOnDemand]: 240/255 looper letters, 197 selfloop transitions, 72 changer transitions 0/327 dead transitions. [2023-01-28 09:38:11,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 327 transitions, 2486 flow [2023-01-28 09:38:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 09:38:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 09:38:11,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1441 transitions. [2023-01-28 09:38:11,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137254901960784 [2023-01-28 09:38:11,068 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1441 transitions. [2023-01-28 09:38:11,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1441 transitions. [2023-01-28 09:38:11,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:38:11,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1441 transitions. [2023-01-28 09:38:11,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.0) internal successors, (1441), 11 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 09:38:11,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:11,077 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:11,077 INFO L175 Difference]: Start difference. First operand has 121 places, 160 transitions, 1093 flow. Second operand 11 states and 1441 transitions. [2023-01-28 09:38:11,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 327 transitions, 2486 flow [2023-01-28 09:38:11,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 327 transitions, 2451 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-01-28 09:38:11,676 INFO L231 Difference]: Finished difference. Result has 134 places, 231 transitions, 1851 flow [2023-01-28 09:38:11,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1851, PETRI_PLACES=134, PETRI_TRANSITIONS=231} [2023-01-28 09:38:11,677 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 75 predicate places. [2023-01-28 09:38:11,677 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 231 transitions, 1851 flow [2023-01-28 09:38:11,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:11,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:38:11,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:38:11,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 09:38:11,678 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:38:11,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:38:11,678 INFO L85 PathProgramCache]: Analyzing trace with hash -857038051, now seen corresponding path program 10 times [2023-01-28 09:38:11,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:38:11,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134985325] [2023-01-28 09:38:11,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:38:11,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:38:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:38:12,242 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 09:38:12,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:38:12,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134985325] [2023-01-28 09:38:12,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134985325] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:38:12,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:38:12,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:38:12,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236172173] [2023-01-28 09:38:12,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:38:12,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:38:12,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:38:12,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:38:12,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:38:12,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-28 09:38:12,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 231 transitions, 1851 flow. Second operand has 7 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:12,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:38:12,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-28 09:38:12,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:38:16,005 INFO L130 PetriNetUnfolder]: 19229/35474 cut-off events. [2023-01-28 09:38:16,005 INFO L131 PetriNetUnfolder]: For 83077/84707 co-relation queries the response was YES. [2023-01-28 09:38:16,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129691 conditions, 35474 events. 19229/35474 cut-off events. For 83077/84707 co-relation queries the response was YES. Maximal size of possible extension queue 1079. Compared 315917 event pairs, 6318 based on Foata normal form. 628/35197 useless extension candidates. Maximal degree in co-relation 127131. Up to 13300 conditions per place. [2023-01-28 09:38:16,199 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 241 selfloop transitions, 72 changer transitions 3/374 dead transitions. [2023-01-28 09:38:16,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 374 transitions, 3347 flow [2023-01-28 09:38:16,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:38:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:38:16,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 954 transitions. [2023-01-28 09:38:16,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.534453781512605 [2023-01-28 09:38:16,202 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 954 transitions. [2023-01-28 09:38:16,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 954 transitions. [2023-01-28 09:38:16,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:38:16,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 954 transitions. [2023-01-28 09:38:16,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.28571428571428) internal successors, (954), 7 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:16,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:16,208 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:16,208 INFO L175 Difference]: Start difference. First operand has 134 places, 231 transitions, 1851 flow. Second operand 7 states and 954 transitions. [2023-01-28 09:38:16,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 374 transitions, 3347 flow [2023-01-28 09:38:16,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 374 transitions, 3291 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-01-28 09:38:16,805 INFO L231 Difference]: Finished difference. Result has 144 places, 252 transitions, 2266 flow [2023-01-28 09:38:16,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2266, PETRI_PLACES=144, PETRI_TRANSITIONS=252} [2023-01-28 09:38:16,806 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 85 predicate places. [2023-01-28 09:38:16,806 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 252 transitions, 2266 flow [2023-01-28 09:38:16,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:16,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:38:16,807 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:38:16,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 09:38:16,807 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 1 more)] === [2023-01-28 09:38:16,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:38:16,808 INFO L85 PathProgramCache]: Analyzing trace with hash 584626605, now seen corresponding path program 11 times [2023-01-28 09:38:16,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:38:16,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105453270] [2023-01-28 09:38:16,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:38:16,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:38:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:38:17,160 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 09:38:17,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:38:17,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105453270] [2023-01-28 09:38:17,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105453270] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:38:17,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:38:17,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:38:17,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694581407] [2023-01-28 09:38:17,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:38:17,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:38:17,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:38:17,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:38:17,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:38:17,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-28 09:38:17,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 252 transitions, 2266 flow. Second operand has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:17,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:38:17,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-28 09:38:17,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:38:22,688 INFO L130 PetriNetUnfolder]: 30033/48681 cut-off events. [2023-01-28 09:38:22,689 INFO L131 PetriNetUnfolder]: For 150267/152327 co-relation queries the response was YES. [2023-01-28 09:38:22,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196148 conditions, 48681 events. 30033/48681 cut-off events. For 150267/152327 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 376948 event pairs, 10902 based on Foata normal form. 694/48786 useless extension candidates. Maximal degree in co-relation 191277. Up to 13549 conditions per place. [2023-01-28 09:38:23,042 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 377 selfloop transitions, 32 changer transitions 61/533 dead transitions. [2023-01-28 09:38:23,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 533 transitions, 5194 flow [2023-01-28 09:38:23,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 09:38:23,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 09:38:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1459 transitions. [2023-01-28 09:38:23,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201426024955437 [2023-01-28 09:38:23,046 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1459 transitions. [2023-01-28 09:38:23,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1459 transitions. [2023-01-28 09:38:23,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:38:23,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1459 transitions. [2023-01-28 09:38:23,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 132.63636363636363) internal successors, (1459), 11 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:23,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:23,054 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:23,054 INFO L175 Difference]: Start difference. First operand has 144 places, 252 transitions, 2266 flow. Second operand 11 states and 1459 transitions. [2023-01-28 09:38:23,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 533 transitions, 5194 flow [2023-01-28 09:38:24,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 533 transitions, 5170 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-01-28 09:38:24,649 INFO L231 Difference]: Finished difference. Result has 158 places, 257 transitions, 2395 flow [2023-01-28 09:38:24,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2395, PETRI_PLACES=158, PETRI_TRANSITIONS=257} [2023-01-28 09:38:24,650 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 99 predicate places. [2023-01-28 09:38:24,650 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 257 transitions, 2395 flow [2023-01-28 09:38:24,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:24,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:38:24,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:38:24,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 09:38:24,651 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 1 more)] === [2023-01-28 09:38:24,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:38:24,652 INFO L85 PathProgramCache]: Analyzing trace with hash 287506541, now seen corresponding path program 12 times [2023-01-28 09:38:24,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:38:24,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027553596] [2023-01-28 09:38:24,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:38:24,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:38:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:38:25,189 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 09:38:25,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:38:25,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027553596] [2023-01-28 09:38:25,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027553596] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:38:25,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:38:25,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 09:38:25,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383640927] [2023-01-28 09:38:25,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:38:25,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:38:25,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:38:25,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:38:25,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-01-28 09:38:25,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-28 09:38:25,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 257 transitions, 2395 flow. Second operand has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:25,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:38:25,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-28 09:38:25,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:38:29,257 INFO L130 PetriNetUnfolder]: 20882/39316 cut-off events. [2023-01-28 09:38:29,258 INFO L131 PetriNetUnfolder]: For 134764/136909 co-relation queries the response was YES. [2023-01-28 09:38:29,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159052 conditions, 39316 events. 20882/39316 cut-off events. For 134764/136909 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 363365 event pairs, 6541 based on Foata normal form. 524/39208 useless extension candidates. Maximal degree in co-relation 158754. Up to 19860 conditions per place. [2023-01-28 09:38:29,689 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 277 selfloop transitions, 75 changer transitions 1/416 dead transitions. [2023-01-28 09:38:29,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 416 transitions, 4380 flow [2023-01-28 09:38:29,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:38:29,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:38:29,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 930 transitions. [2023-01-28 09:38:29,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2023-01-28 09:38:29,692 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 930 transitions. [2023-01-28 09:38:29,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 930 transitions. [2023-01-28 09:38:29,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:38:29,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 930 transitions. [2023-01-28 09:38:29,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 132.85714285714286) internal successors, (930), 7 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:29,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:29,697 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:29,697 INFO L175 Difference]: Start difference. First operand has 158 places, 257 transitions, 2395 flow. Second operand 7 states and 930 transitions. [2023-01-28 09:38:29,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 416 transitions, 4380 flow [2023-01-28 09:38:31,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 416 transitions, 4341 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-01-28 09:38:31,285 INFO L231 Difference]: Finished difference. Result has 162 places, 298 transitions, 3043 flow [2023-01-28 09:38:31,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2358, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3043, PETRI_PLACES=162, PETRI_TRANSITIONS=298} [2023-01-28 09:38:31,285 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 103 predicate places. [2023-01-28 09:38:31,286 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 298 transitions, 3043 flow [2023-01-28 09:38:31,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:31,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:38:31,287 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:38:31,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 09:38:31,287 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 1 more)] === [2023-01-28 09:38:31,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:38:31,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1525849507, now seen corresponding path program 13 times [2023-01-28 09:38:31,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:38:31,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448125630] [2023-01-28 09:38:31,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:38:31,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:38:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:38:31,786 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 09:38:31,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:38:31,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448125630] [2023-01-28 09:38:31,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448125630] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:38:31,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:38:31,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:38:31,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579968069] [2023-01-28 09:38:31,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:38:31,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:38:31,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:38:31,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:38:31,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:38:31,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-28 09:38:31,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 298 transitions, 3043 flow. Second operand has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:31,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:38:31,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-28 09:38:31,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:38:37,273 INFO L130 PetriNetUnfolder]: 25276/47397 cut-off events. [2023-01-28 09:38:37,274 INFO L131 PetriNetUnfolder]: For 205259/208158 co-relation queries the response was YES. [2023-01-28 09:38:37,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197136 conditions, 47397 events. 25276/47397 cut-off events. For 205259/208158 co-relation queries the response was YES. Maximal size of possible extension queue 1428. Compared 449293 event pairs, 9715 based on Foata normal form. 686/47189 useless extension candidates. Maximal degree in co-relation 193261. Up to 26189 conditions per place. [2023-01-28 09:38:37,917 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 335 selfloop transitions, 51 changer transitions 36/485 dead transitions. [2023-01-28 09:38:37,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 485 transitions, 5307 flow [2023-01-28 09:38:37,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:38:37,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:38:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1200 transitions. [2023-01-28 09:38:37,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228758169934641 [2023-01-28 09:38:37,920 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1200 transitions. [2023-01-28 09:38:37,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1200 transitions. [2023-01-28 09:38:37,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:38:37,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1200 transitions. [2023-01-28 09:38:37,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.33333333333334) internal successors, (1200), 9 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:37,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:37,926 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:37,926 INFO L175 Difference]: Start difference. First operand has 162 places, 298 transitions, 3043 flow. Second operand 9 states and 1200 transitions. [2023-01-28 09:38:37,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 485 transitions, 5307 flow [2023-01-28 09:38:40,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 485 transitions, 5299 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-28 09:38:40,703 INFO L231 Difference]: Finished difference. Result has 174 places, 331 transitions, 3515 flow [2023-01-28 09:38:40,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=3041, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3515, PETRI_PLACES=174, PETRI_TRANSITIONS=331} [2023-01-28 09:38:40,704 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 115 predicate places. [2023-01-28 09:38:40,704 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 331 transitions, 3515 flow [2023-01-28 09:38:40,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:40,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:38:40,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:38:40,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 09:38:40,705 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 1 more)] === [2023-01-28 09:38:40,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:38:40,705 INFO L85 PathProgramCache]: Analyzing trace with hash 403579719, now seen corresponding path program 14 times [2023-01-28 09:38:40,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:38:40,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478816312] [2023-01-28 09:38:40,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:38:40,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:38:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:38:41,057 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 09:38:41,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:38:41,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478816312] [2023-01-28 09:38:41,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478816312] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:38:41,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:38:41,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:38:41,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185494115] [2023-01-28 09:38:41,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:38:41,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:38:41,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:38:41,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:38:41,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:38:41,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-28 09:38:41,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 331 transitions, 3515 flow. Second operand has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:41,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:38:41,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-28 09:38:41,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:38:50,121 INFO L130 PetriNetUnfolder]: 31515/59522 cut-off events. [2023-01-28 09:38:50,121 INFO L131 PetriNetUnfolder]: For 307688/310757 co-relation queries the response was YES. [2023-01-28 09:38:50,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259390 conditions, 59522 events. 31515/59522 cut-off events. For 307688/310757 co-relation queries the response was YES. Maximal size of possible extension queue 1784. Compared 586012 event pairs, 9979 based on Foata normal form. 1325/59881 useless extension candidates. Maximal degree in co-relation 254710. Up to 21355 conditions per place. [2023-01-28 09:38:50,732 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 367 selfloop transitions, 122 changer transitions 13/565 dead transitions. [2023-01-28 09:38:50,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 565 transitions, 6706 flow [2023-01-28 09:38:50,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:38:50,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:38:50,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1194 transitions. [2023-01-28 09:38:50,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202614379084968 [2023-01-28 09:38:50,734 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1194 transitions. [2023-01-28 09:38:50,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1194 transitions. [2023-01-28 09:38:50,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:38:50,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1194 transitions. [2023-01-28 09:38:50,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.66666666666666) internal successors, (1194), 9 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:50,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:50,738 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:50,738 INFO L175 Difference]: Start difference. First operand has 174 places, 331 transitions, 3515 flow. Second operand 9 states and 1194 transitions. [2023-01-28 09:38:50,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 565 transitions, 6706 flow [2023-01-28 09:38:55,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 565 transitions, 6626 flow, removed 32 selfloop flow, removed 1 redundant places. [2023-01-28 09:38:55,054 INFO L231 Difference]: Finished difference. Result has 187 places, 395 transitions, 4738 flow [2023-01-28 09:38:55,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=3455, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4738, PETRI_PLACES=187, PETRI_TRANSITIONS=395} [2023-01-28 09:38:55,054 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 128 predicate places. [2023-01-28 09:38:55,054 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 395 transitions, 4738 flow [2023-01-28 09:38:55,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:55,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:38:55,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:38:55,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 09:38:55,055 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 1 more)] === [2023-01-28 09:38:55,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:38:55,056 INFO L85 PathProgramCache]: Analyzing trace with hash 830023509, now seen corresponding path program 15 times [2023-01-28 09:38:55,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:38:55,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484543480] [2023-01-28 09:38:55,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:38:55,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:38:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:38:55,371 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 09:38:55,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:38:55,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484543480] [2023-01-28 09:38:55,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484543480] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:38:55,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:38:55,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:38:55,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783850578] [2023-01-28 09:38:55,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:38:55,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:38:55,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:38:55,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:38:55,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:38:55,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-28 09:38:55,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 395 transitions, 4738 flow. Second operand has 7 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:38:55,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:38:55,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-28 09:38:55,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:39:04,892 INFO L130 PetriNetUnfolder]: 34836/66146 cut-off events. [2023-01-28 09:39:04,893 INFO L131 PetriNetUnfolder]: For 423231/427594 co-relation queries the response was YES. [2023-01-28 09:39:05,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306590 conditions, 66146 events. 34836/66146 cut-off events. For 423231/427594 co-relation queries the response was YES. Maximal size of possible extension queue 2028. Compared 661301 event pairs, 17209 based on Foata normal form. 261/65358 useless extension candidates. Maximal degree in co-relation 301351. Up to 46642 conditions per place. [2023-01-28 09:39:05,544 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 334 selfloop transitions, 68 changer transitions 8/473 dead transitions. [2023-01-28 09:39:05,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 473 transitions, 6158 flow [2023-01-28 09:39:05,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:39:05,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:39:05,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 921 transitions. [2023-01-28 09:39:05,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159663865546219 [2023-01-28 09:39:05,546 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 921 transitions. [2023-01-28 09:39:05,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 921 transitions. [2023-01-28 09:39:05,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:39:05,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 921 transitions. [2023-01-28 09:39:05,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 131.57142857142858) internal successors, (921), 7 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:05,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:05,550 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:05,550 INFO L175 Difference]: Start difference. First operand has 187 places, 395 transitions, 4738 flow. Second operand 7 states and 921 transitions. [2023-01-28 09:39:05,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 473 transitions, 6158 flow [2023-01-28 09:39:11,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 473 transitions, 6113 flow, removed 22 selfloop flow, removed 1 redundant places. [2023-01-28 09:39:11,685 INFO L231 Difference]: Finished difference. Result has 195 places, 410 transitions, 5090 flow [2023-01-28 09:39:11,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=4695, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5090, PETRI_PLACES=195, PETRI_TRANSITIONS=410} [2023-01-28 09:39:11,685 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 136 predicate places. [2023-01-28 09:39:11,685 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 410 transitions, 5090 flow [2023-01-28 09:39:11,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:11,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:39:11,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:39:11,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 09:39:11,686 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 1 more)] === [2023-01-28 09:39:11,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:39:11,687 INFO L85 PathProgramCache]: Analyzing trace with hash 2083692493, now seen corresponding path program 16 times [2023-01-28 09:39:11,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:39:11,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755684486] [2023-01-28 09:39:11,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:39:11,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:39:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:39:12,087 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 09:39:12,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:39:12,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755684486] [2023-01-28 09:39:12,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755684486] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:39:12,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:39:12,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:39:12,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655134726] [2023-01-28 09:39:12,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:39:12,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:39:12,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:39:12,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:39:12,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:39:12,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-28 09:39:12,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 410 transitions, 5090 flow. Second operand has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:12,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:39:12,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-28 09:39:12,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:39:19,331 INFO L130 PetriNetUnfolder]: 27082/50443 cut-off events. [2023-01-28 09:39:19,331 INFO L131 PetriNetUnfolder]: For 338931/341536 co-relation queries the response was YES. [2023-01-28 09:39:19,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234147 conditions, 50443 events. 27082/50443 cut-off events. For 338931/341536 co-relation queries the response was YES. Maximal size of possible extension queue 1463. Compared 477804 event pairs, 12878 based on Foata normal form. 1201/50771 useless extension candidates. Maximal degree in co-relation 231219. Up to 35064 conditions per place. [2023-01-28 09:39:20,026 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 293 selfloop transitions, 113 changer transitions 39/508 dead transitions. [2023-01-28 09:39:20,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 508 transitions, 6978 flow [2023-01-28 09:39:20,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:39:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:39:20,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1039 transitions. [2023-01-28 09:39:20,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509313725490196 [2023-01-28 09:39:20,028 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1039 transitions. [2023-01-28 09:39:20,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1039 transitions. [2023-01-28 09:39:20,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:39:20,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1039 transitions. [2023-01-28 09:39:20,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.875) internal successors, (1039), 8 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:20,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:20,032 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:20,032 INFO L175 Difference]: Start difference. First operand has 195 places, 410 transitions, 5090 flow. Second operand 8 states and 1039 transitions. [2023-01-28 09:39:20,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 508 transitions, 6978 flow [2023-01-28 09:39:23,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 508 transitions, 6833 flow, removed 50 selfloop flow, removed 3 redundant places. [2023-01-28 09:39:23,099 INFO L231 Difference]: Finished difference. Result has 205 places, 404 transitions, 5339 flow [2023-01-28 09:39:23,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=4774, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5339, PETRI_PLACES=205, PETRI_TRANSITIONS=404} [2023-01-28 09:39:23,099 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 146 predicate places. [2023-01-28 09:39:23,099 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 404 transitions, 5339 flow [2023-01-28 09:39:23,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:23,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:39:23,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:39:23,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 09:39:23,100 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 1 more)] === [2023-01-28 09:39:23,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:39:23,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1614492047, now seen corresponding path program 17 times [2023-01-28 09:39:23,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:39:23,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908155896] [2023-01-28 09:39:23,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:39:23,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:39:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:39:23,463 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 09:39:23,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:39:23,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908155896] [2023-01-28 09:39:23,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908155896] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:39:23,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:39:23,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:39:23,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331452914] [2023-01-28 09:39:23,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:39:23,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:39:23,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:39:23,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:39:23,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:39:23,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-28 09:39:23,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 404 transitions, 5339 flow. Second operand has 6 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:23,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:39:23,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-28 09:39:23,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:39:30,533 INFO L130 PetriNetUnfolder]: 24767/47254 cut-off events. [2023-01-28 09:39:30,534 INFO L131 PetriNetUnfolder]: For 350644/352726 co-relation queries the response was YES. [2023-01-28 09:39:30,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227676 conditions, 47254 events. 24767/47254 cut-off events. For 350644/352726 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 453335 event pairs, 11810 based on Foata normal form. 250/46824 useless extension candidates. Maximal degree in co-relation 225824. Up to 34941 conditions per place. [2023-01-28 09:39:30,993 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 374 selfloop transitions, 42 changer transitions 9/488 dead transitions. [2023-01-28 09:39:30,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 488 transitions, 6852 flow [2023-01-28 09:39:30,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:39:30,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:39:30,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 808 transitions. [2023-01-28 09:39:30,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5281045751633987 [2023-01-28 09:39:30,994 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 808 transitions. [2023-01-28 09:39:30,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 808 transitions. [2023-01-28 09:39:30,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:39:30,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 808 transitions. [2023-01-28 09:39:30,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 134.66666666666666) internal successors, (808), 6 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:30,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:30,998 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:30,998 INFO L175 Difference]: Start difference. First operand has 205 places, 404 transitions, 5339 flow. Second operand 6 states and 808 transitions. [2023-01-28 09:39:30,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 488 transitions, 6852 flow [2023-01-28 09:39:33,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 488 transitions, 6745 flow, removed 50 selfloop flow, removed 1 redundant places. [2023-01-28 09:39:33,969 INFO L231 Difference]: Finished difference. Result has 213 places, 411 transitions, 5505 flow [2023-01-28 09:39:33,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=5244, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5505, PETRI_PLACES=213, PETRI_TRANSITIONS=411} [2023-01-28 09:39:33,970 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 154 predicate places. [2023-01-28 09:39:33,970 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 411 transitions, 5505 flow [2023-01-28 09:39:33,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:33,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:39:33,970 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:39:33,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 09:39:33,970 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 1 more)] === [2023-01-28 09:39:33,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:39:33,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1386162823, now seen corresponding path program 18 times [2023-01-28 09:39:33,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:39:33,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091386889] [2023-01-28 09:39:33,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:39:33,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:39:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:39:34,300 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 09:39:34,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:39:34,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091386889] [2023-01-28 09:39:34,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091386889] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:39:34,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:39:34,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:39:34,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246106040] [2023-01-28 09:39:34,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:39:34,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:39:34,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:39:34,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:39:34,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:39:34,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-28 09:39:34,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 411 transitions, 5505 flow. Second operand has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:34,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:39:34,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-28 09:39:34,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:39:43,066 INFO L130 PetriNetUnfolder]: 29217/55517 cut-off events. [2023-01-28 09:39:43,066 INFO L131 PetriNetUnfolder]: For 445388/448332 co-relation queries the response was YES. [2023-01-28 09:39:43,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272719 conditions, 55517 events. 29217/55517 cut-off events. For 445388/448332 co-relation queries the response was YES. Maximal size of possible extension queue 1667. Compared 544896 event pairs, 11296 based on Foata normal form. 450/55147 useless extension candidates. Maximal degree in co-relation 270935. Up to 19838 conditions per place. [2023-01-28 09:39:43,652 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 371 selfloop transitions, 144 changer transitions 9/587 dead transitions. [2023-01-28 09:39:43,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 587 transitions, 8274 flow [2023-01-28 09:39:43,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:39:43,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:39:43,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1083 transitions. [2023-01-28 09:39:43,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308823529411765 [2023-01-28 09:39:43,653 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1083 transitions. [2023-01-28 09:39:43,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1083 transitions. [2023-01-28 09:39:43,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:39:43,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1083 transitions. [2023-01-28 09:39:43,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 135.375) internal successors, (1083), 8 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:43,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:43,656 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:43,656 INFO L175 Difference]: Start difference. First operand has 213 places, 411 transitions, 5505 flow. Second operand 8 states and 1083 transitions. [2023-01-28 09:39:43,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 587 transitions, 8274 flow [2023-01-28 09:39:47,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 587 transitions, 8203 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-01-28 09:39:47,890 INFO L231 Difference]: Finished difference. Result has 223 places, 438 transitions, 6416 flow [2023-01-28 09:39:47,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=5434, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6416, PETRI_PLACES=223, PETRI_TRANSITIONS=438} [2023-01-28 09:39:47,890 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 164 predicate places. [2023-01-28 09:39:47,890 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 438 transitions, 6416 flow [2023-01-28 09:39:47,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:47,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:39:47,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:39:47,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 09:39:47,891 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 1 more)] === [2023-01-28 09:39:47,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:39:47,892 INFO L85 PathProgramCache]: Analyzing trace with hash 906622927, now seen corresponding path program 19 times [2023-01-28 09:39:47,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:39:47,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225330298] [2023-01-28 09:39:47,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:39:47,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:39:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:39:48,359 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 09:39:48,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:39:48,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225330298] [2023-01-28 09:39:48,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225330298] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:39:48,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:39:48,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 09:39:48,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943523692] [2023-01-28 09:39:48,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:39:48,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:39:48,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:39:48,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:39:48,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-01-28 09:39:48,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-28 09:39:48,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 438 transitions, 6416 flow. Second operand has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:39:48,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:39:48,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-28 09:39:48,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand