/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-ticket-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:58:05,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:58:05,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:58:05,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:58:05,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:58:05,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:58:05,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:58:05,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:58:05,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:58:05,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:58:05,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:58:05,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:58:05,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:58:05,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:58:05,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:58:05,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:58:05,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:58:05,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:58:05,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:58:05,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:58:05,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:58:05,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:58:05,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:58:05,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:58:05,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:58:05,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:58:05,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:58:05,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:58:05,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:58:05,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:58:05,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:58:05,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:58:05,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:58:05,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:58:05,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:58:05,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:58:05,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:58:05,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:58:05,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:58:05,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:58:05,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:58:05,551 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 09:58:05,572 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:58:05,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:58:05,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:58:05,573 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:58:05,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:58:05,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:58:05,574 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:58:05,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:58:05,574 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:58:05,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:58:05,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:58:05,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:58:05,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:58:05,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:58:05,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:58:05,575 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:58:05,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:58:05,575 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:58:05,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:58:05,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:58:05,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:58:05,575 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:58:05,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:58:05,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:58:05,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:58:05,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:58:05,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:58:05,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:58:05,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:58:05,576 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:58:05,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:58:05,577 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:58:05,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:58:05,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:58:05,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:58:05,785 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:58:05,786 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:58:05,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2023-01-28 09:58:06,782 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:58:06,954 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:58:06,955 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2023-01-28 09:58:06,960 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3eb8e8a/119f5a82ea564549aed2a14f813bef70/FLAG24900bda8 [2023-01-28 09:58:06,973 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3eb8e8a/119f5a82ea564549aed2a14f813bef70 [2023-01-28 09:58:06,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:58:06,976 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:58:06,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:58:06,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:58:06,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:58:06,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:58:06" (1/1) ... [2023-01-28 09:58:06,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7efbb0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:58:06, skipping insertion in model container [2023-01-28 09:58:06,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:58:06" (1/1) ... [2023-01-28 09:58:06,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:58:07,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:58:07,110 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-ticket-5.wvr.c[3963,3976] [2023-01-28 09:58:07,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:58:07,120 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:58:07,137 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-ticket-5.wvr.c[3963,3976] [2023-01-28 09:58:07,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:58:07,143 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:58:07,144 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:58:07,148 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:58:07,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:58:07 WrapperNode [2023-01-28 09:58:07,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:58:07,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:58:07,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:58:07,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:58:07,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:58:07" (1/1) ... [2023-01-28 09:58:07,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:58:07" (1/1) ... [2023-01-28 09:58:07,176 INFO L138 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 247 [2023-01-28 09:58:07,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:58:07,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:58:07,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:58:07,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:58:07,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:58:07" (1/1) ... [2023-01-28 09:58:07,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:58:07" (1/1) ... [2023-01-28 09:58:07,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:58:07" (1/1) ... [2023-01-28 09:58:07,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:58:07" (1/1) ... [2023-01-28 09:58:07,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:58:07" (1/1) ... [2023-01-28 09:58:07,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:58:07" (1/1) ... [2023-01-28 09:58:07,193 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:58:07" (1/1) ... [2023-01-28 09:58:07,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:58:07" (1/1) ... [2023-01-28 09:58:07,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:58:07,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:58:07,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:58:07,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:58:07,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:58:07" (1/1) ... [2023-01-28 09:58:07,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:58:07,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:58:07,244 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 09:58:07,246 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 09:58:07,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:58:07,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:58:07,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:58:07,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:58:07,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:58:07,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 09:58:07,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 09:58:07,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 09:58:07,282 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 09:58:07,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:58:07,282 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-01-28 09:58:07,282 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-01-28 09:58:07,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:58:07,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:58:07,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 09:58:07,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 09:58:07,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:58:07,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:58:07,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:58:07,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:58:07,284 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 09:58:07,373 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:58:07,375 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:58:07,637 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:58:07,701 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:58:07,701 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 09:58:07,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:58:07 BoogieIcfgContainer [2023-01-28 09:58:07,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:58:07,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:58:07,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:58:07,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:58:07,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:58:06" (1/3) ... [2023-01-28 09:58:07,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2207cd24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:58:07, skipping insertion in model container [2023-01-28 09:58:07,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:58:07" (2/3) ... [2023-01-28 09:58:07,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2207cd24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:58:07, skipping insertion in model container [2023-01-28 09:58:07,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:58:07" (3/3) ... [2023-01-28 09:58:07,708 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2023-01-28 09:58:07,720 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:58:07,720 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:58:07,720 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:58:07,818 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 09:58:07,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 167 transitions, 374 flow [2023-01-28 09:58:07,930 INFO L130 PetriNetUnfolder]: 2/162 cut-off events. [2023-01-28 09:58:07,930 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-28 09:58:07,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 162 events. 2/162 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2023-01-28 09:58:07,935 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 167 transitions, 374 flow [2023-01-28 09:58:07,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 148 transitions, 326 flow [2023-01-28 09:58:07,943 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:58:07,960 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 148 transitions, 326 flow [2023-01-28 09:58:07,962 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 148 transitions, 326 flow [2023-01-28 09:58:07,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 148 transitions, 326 flow [2023-01-28 09:58:07,999 INFO L130 PetriNetUnfolder]: 2/148 cut-off events. [2023-01-28 09:58:07,999 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-28 09:58:07,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 148 events. 2/148 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2023-01-28 09:58:08,000 INFO L119 LiptonReduction]: Number of co-enabled transitions 2082 [2023-01-28 09:58:11,218 INFO L134 LiptonReduction]: Checked pairs total: 10775 [2023-01-28 09:58:11,218 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-01-28 09:58:11,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:58:11,241 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;@50d67d45, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:58:11,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-28 09:58:11,262 INFO L130 PetriNetUnfolder]: 0/41 cut-off events. [2023-01-28 09:58:11,262 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-28 09:58:11,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:11,263 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] [2023-01-28 09:58:11,263 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 3 more)] === [2023-01-28 09:58:11,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:11,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1886582129, now seen corresponding path program 1 times [2023-01-28 09:58:11,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:11,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88451829] [2023-01-28 09:58:11,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:11,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:12,798 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 09:58:12,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:12,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88451829] [2023-01-28 09:58:12,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88451829] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:12,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:12,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:58:12,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606855314] [2023-01-28 09:58:12,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:12,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:58:12,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:12,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:58:12,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:58:12,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 281 [2023-01-28 09:58:12,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 114 flow. Second operand has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:12,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:12,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 281 [2023-01-28 09:58:12,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:16,879 INFO L130 PetriNetUnfolder]: 64349/83635 cut-off events. [2023-01-28 09:58:16,880 INFO L131 PetriNetUnfolder]: For 5019/5019 co-relation queries the response was YES. [2023-01-28 09:58:17,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171328 conditions, 83635 events. 64349/83635 cut-off events. For 5019/5019 co-relation queries the response was YES. Maximal size of possible extension queue 2027. Compared 448494 event pairs, 14972 based on Foata normal form. 1/83636 useless extension candidates. Maximal degree in co-relation 170159. Up to 35393 conditions per place. [2023-01-28 09:58:17,248 INFO L137 encePairwiseOnDemand]: 268/281 looper letters, 153 selfloop transitions, 26 changer transitions 15/194 dead transitions. [2023-01-28 09:58:17,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 194 transitions, 875 flow [2023-01-28 09:58:17,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:58:17,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:58:17,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1284 transitions. [2023-01-28 09:58:17,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5077105575326216 [2023-01-28 09:58:17,267 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1284 transitions. [2023-01-28 09:58:17,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1284 transitions. [2023-01-28 09:58:17,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:17,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1284 transitions. [2023-01-28 09:58:17,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 142.66666666666666) internal successors, (1284), 9 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:17,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:17,288 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:17,289 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 114 flow. Second operand 9 states and 1284 transitions. [2023-01-28 09:58:17,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 194 transitions, 875 flow [2023-01-28 09:58:17,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 194 transitions, 809 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-01-28 09:58:17,442 INFO L231 Difference]: Finished difference. Result has 60 places, 74 transitions, 273 flow [2023-01-28 09:58:17,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=273, PETRI_PLACES=60, PETRI_TRANSITIONS=74} [2023-01-28 09:58:17,445 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-01-28 09:58:17,446 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 74 transitions, 273 flow [2023-01-28 09:58:17,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:17,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:17,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:58:17,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:58:17,447 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 3 more)] === [2023-01-28 09:58:17,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:17,447 INFO L85 PathProgramCache]: Analyzing trace with hash -169135167, now seen corresponding path program 2 times [2023-01-28 09:58:17,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:17,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740922656] [2023-01-28 09:58:17,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:17,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:17,642 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 09:58:17,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:17,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740922656] [2023-01-28 09:58:17,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740922656] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:17,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:17,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:58:17,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949639132] [2023-01-28 09:58:17,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:17,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:58:17,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:17,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:58:17,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:58:17,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-28 09:58:17,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 74 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:17,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:17,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-28 09:58:17,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:19,586 INFO L130 PetriNetUnfolder]: 22462/32041 cut-off events. [2023-01-28 09:58:19,586 INFO L131 PetriNetUnfolder]: For 6920/7024 co-relation queries the response was YES. [2023-01-28 09:58:19,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72603 conditions, 32041 events. 22462/32041 cut-off events. For 6920/7024 co-relation queries the response was YES. Maximal size of possible extension queue 1524. Compared 206335 event pairs, 3182 based on Foata normal form. 472/30857 useless extension candidates. Maximal degree in co-relation 50401. Up to 22809 conditions per place. [2023-01-28 09:58:19,770 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 101 selfloop transitions, 25 changer transitions 0/158 dead transitions. [2023-01-28 09:58:19,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 158 transitions, 738 flow [2023-01-28 09:58:19,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:58:19,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:58:19,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1038 transitions. [2023-01-28 09:58:19,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277071682765633 [2023-01-28 09:58:19,773 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1038 transitions. [2023-01-28 09:58:19,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1038 transitions. [2023-01-28 09:58:19,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:19,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1038 transitions. [2023-01-28 09:58:19,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.28571428571428) internal successors, (1038), 7 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:19,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:19,779 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:19,780 INFO L175 Difference]: Start difference. First operand has 60 places, 74 transitions, 273 flow. Second operand 7 states and 1038 transitions. [2023-01-28 09:58:19,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 158 transitions, 738 flow [2023-01-28 09:58:19,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 158 transitions, 731 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 09:58:19,938 INFO L231 Difference]: Finished difference. Result has 68 places, 92 transitions, 390 flow [2023-01-28 09:58:19,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=68, PETRI_TRANSITIONS=92} [2023-01-28 09:58:19,938 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2023-01-28 09:58:19,939 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 92 transitions, 390 flow [2023-01-28 09:58:19,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:19,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:19,939 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] [2023-01-28 09:58:19,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 09:58:19,940 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 3 more)] === [2023-01-28 09:58:19,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:19,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1209127043, now seen corresponding path program 3 times [2023-01-28 09:58:19,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:19,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940448071] [2023-01-28 09:58:19,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:19,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:20,247 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 09:58:20,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:20,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940448071] [2023-01-28 09:58:20,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940448071] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:20,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:20,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:58:20,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244910379] [2023-01-28 09:58:20,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:20,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:58:20,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:20,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:58:20,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:58:20,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-28 09:58:20,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 92 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:20,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:20,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-28 09:58:20,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:21,875 INFO L130 PetriNetUnfolder]: 19232/28041 cut-off events. [2023-01-28 09:58:21,875 INFO L131 PetriNetUnfolder]: For 17437/18411 co-relation queries the response was YES. [2023-01-28 09:58:21,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77155 conditions, 28041 events. 19232/28041 cut-off events. For 17437/18411 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 184532 event pairs, 3723 based on Foata normal form. 896/27579 useless extension candidates. Maximal degree in co-relation 50573. Up to 19959 conditions per place. [2023-01-28 09:58:22,039 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 97 selfloop transitions, 36 changer transitions 0/164 dead transitions. [2023-01-28 09:58:22,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 164 transitions, 886 flow [2023-01-28 09:58:22,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:58:22,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:58:22,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1032 transitions. [2023-01-28 09:58:22,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5246568378240977 [2023-01-28 09:58:22,042 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1032 transitions. [2023-01-28 09:58:22,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1032 transitions. [2023-01-28 09:58:22,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:22,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1032 transitions. [2023-01-28 09:58:22,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.42857142857142) internal successors, (1032), 7 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:22,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:22,048 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:22,048 INFO L175 Difference]: Start difference. First operand has 68 places, 92 transitions, 390 flow. Second operand 7 states and 1032 transitions. [2023-01-28 09:58:22,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 164 transitions, 886 flow [2023-01-28 09:58:22,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 164 transitions, 880 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:58:22,141 INFO L231 Difference]: Finished difference. Result has 75 places, 104 transitions, 534 flow [2023-01-28 09:58:22,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=534, PETRI_PLACES=75, PETRI_TRANSITIONS=104} [2023-01-28 09:58:22,142 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2023-01-28 09:58:22,142 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 104 transitions, 534 flow [2023-01-28 09:58:22,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:22,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:22,143 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] [2023-01-28 09:58:22,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 09:58:22,143 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 3 more)] === [2023-01-28 09:58:22,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:22,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1580156935, now seen corresponding path program 4 times [2023-01-28 09:58:22,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:22,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234941530] [2023-01-28 09:58:22,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:22,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:22,341 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 09:58:22,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:22,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234941530] [2023-01-28 09:58:22,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234941530] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:22,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:22,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:58:22,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56977178] [2023-01-28 09:58:22,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:22,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:58:22,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:22,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:58:22,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:58:22,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-28 09:58:22,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 104 transitions, 534 flow. Second operand has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:22,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:22,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-28 09:58:22,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:26,290 INFO L130 PetriNetUnfolder]: 43502/65145 cut-off events. [2023-01-28 09:58:26,291 INFO L131 PetriNetUnfolder]: For 57077/57949 co-relation queries the response was YES. [2023-01-28 09:58:26,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186197 conditions, 65145 events. 43502/65145 cut-off events. For 57077/57949 co-relation queries the response was YES. Maximal size of possible extension queue 3147. Compared 507173 event pairs, 6834 based on Foata normal form. 868/63085 useless extension candidates. Maximal degree in co-relation 111031. Up to 19576 conditions per place. [2023-01-28 09:58:26,840 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 134 selfloop transitions, 85 changer transitions 0/250 dead transitions. [2023-01-28 09:58:26,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 250 transitions, 1560 flow [2023-01-28 09:58:26,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:58:26,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:58:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1338 transitions. [2023-01-28 09:58:26,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5290628706998813 [2023-01-28 09:58:26,851 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1338 transitions. [2023-01-28 09:58:26,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1338 transitions. [2023-01-28 09:58:26,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:26,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1338 transitions. [2023-01-28 09:58:26,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 148.66666666666666) internal successors, (1338), 9 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:26,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:26,857 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:26,857 INFO L175 Difference]: Start difference. First operand has 75 places, 104 transitions, 534 flow. Second operand 9 states and 1338 transitions. [2023-01-28 09:58:26,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 250 transitions, 1560 flow [2023-01-28 09:58:27,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 250 transitions, 1554 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:58:27,764 INFO L231 Difference]: Finished difference. Result has 86 places, 155 transitions, 1138 flow [2023-01-28 09:58:27,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1138, PETRI_PLACES=86, PETRI_TRANSITIONS=155} [2023-01-28 09:58:27,765 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2023-01-28 09:58:27,765 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 155 transitions, 1138 flow [2023-01-28 09:58:27,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:27,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:27,765 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] [2023-01-28 09:58:27,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 09:58:27,766 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 3 more)] === [2023-01-28 09:58:27,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:27,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1901603651, now seen corresponding path program 5 times [2023-01-28 09:58:27,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:27,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136367066] [2023-01-28 09:58:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:27,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:27,937 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 09:58:27,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:27,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136367066] [2023-01-28 09:58:27,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136367066] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:27,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:27,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:58:27,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650725781] [2023-01-28 09:58:27,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:27,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:58:27,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:27,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:58:27,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:58:27,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-28 09:58:27,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 155 transitions, 1138 flow. Second operand has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:27,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:27,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-28 09:58:27,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:33,878 INFO L130 PetriNetUnfolder]: 53657/81911 cut-off events. [2023-01-28 09:58:33,878 INFO L131 PetriNetUnfolder]: For 163467/170473 co-relation queries the response was YES. [2023-01-28 09:58:34,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286265 conditions, 81911 events. 53657/81911 cut-off events. For 163467/170473 co-relation queries the response was YES. Maximal size of possible extension queue 4020. Compared 678860 event pairs, 9236 based on Foata normal form. 1728/80203 useless extension candidates. Maximal degree in co-relation 160961. Up to 22391 conditions per place. [2023-01-28 09:58:34,633 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 145 selfloop transitions, 178 changer transitions 3/357 dead transitions. [2023-01-28 09:58:34,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 357 transitions, 2957 flow [2023-01-28 09:58:34,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 09:58:34,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 09:58:34,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1631 transitions. [2023-01-28 09:58:34,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276609511484956 [2023-01-28 09:58:34,656 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1631 transitions. [2023-01-28 09:58:34,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1631 transitions. [2023-01-28 09:58:34,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:34,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1631 transitions. [2023-01-28 09:58:34,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 148.27272727272728) internal successors, (1631), 11 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:34,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:34,662 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:34,662 INFO L175 Difference]: Start difference. First operand has 86 places, 155 transitions, 1138 flow. Second operand 11 states and 1631 transitions. [2023-01-28 09:58:34,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 357 transitions, 2957 flow [2023-01-28 09:58:36,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 357 transitions, 2911 flow, removed 20 selfloop flow, removed 1 redundant places. [2023-01-28 09:58:36,415 INFO L231 Difference]: Finished difference. Result has 100 places, 250 transitions, 2543 flow [2023-01-28 09:58:36,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2543, PETRI_PLACES=100, PETRI_TRANSITIONS=250} [2023-01-28 09:58:36,417 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2023-01-28 09:58:36,417 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 250 transitions, 2543 flow [2023-01-28 09:58:36,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:36,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:36,418 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] [2023-01-28 09:58:36,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 09:58:36,418 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 3 more)] === [2023-01-28 09:58:36,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:36,418 INFO L85 PathProgramCache]: Analyzing trace with hash 480139849, now seen corresponding path program 6 times [2023-01-28 09:58:36,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:36,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632552531] [2023-01-28 09:58:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:36,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:36,719 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 09:58:36,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:36,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632552531] [2023-01-28 09:58:36,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632552531] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:36,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:36,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 09:58:36,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763843484] [2023-01-28 09:58:36,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:36,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:58:36,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:36,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:58:36,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-01-28 09:58:36,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-28 09:58:36,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 250 transitions, 2543 flow. Second operand has 10 states, 10 states have (on average 133.6) internal successors, (1336), 10 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:36,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:36,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-28 09:58:36,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:43,635 INFO L130 PetriNetUnfolder]: 52963/80980 cut-off events. [2023-01-28 09:58:43,635 INFO L131 PetriNetUnfolder]: For 327024/341072 co-relation queries the response was YES. [2023-01-28 09:58:44,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344916 conditions, 80980 events. 52963/80980 cut-off events. For 327024/341072 co-relation queries the response was YES. Maximal size of possible extension queue 4072. Compared 667582 event pairs, 15921 based on Foata normal form. 4340/82124 useless extension candidates. Maximal degree in co-relation 264833. Up to 58116 conditions per place. [2023-01-28 09:58:44,552 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 266 selfloop transitions, 184 changer transitions 16/495 dead transitions. [2023-01-28 09:58:44,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 495 transitions, 5235 flow [2023-01-28 09:58:44,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 09:58:44,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 09:58:44,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2759 transitions. [2023-01-28 09:58:44,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167634388462259 [2023-01-28 09:58:44,575 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2759 transitions. [2023-01-28 09:58:44,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2759 transitions. [2023-01-28 09:58:44,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:44,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2759 transitions. [2023-01-28 09:58:44,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 145.21052631578948) internal successors, (2759), 19 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:44,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 281.0) internal successors, (5620), 20 states have internal predecessors, (5620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:44,605 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 281.0) internal successors, (5620), 20 states have internal predecessors, (5620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:44,605 INFO L175 Difference]: Start difference. First operand has 100 places, 250 transitions, 2543 flow. Second operand 19 states and 2759 transitions. [2023-01-28 09:58:44,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 495 transitions, 5235 flow [2023-01-28 09:58:46,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 495 transitions, 5102 flow, removed 61 selfloop flow, removed 2 redundant places. [2023-01-28 09:58:46,763 INFO L231 Difference]: Finished difference. Result has 125 places, 321 transitions, 3939 flow [2023-01-28 09:58:46,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3939, PETRI_PLACES=125, PETRI_TRANSITIONS=321} [2023-01-28 09:58:46,764 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 67 predicate places. [2023-01-28 09:58:46,764 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 321 transitions, 3939 flow [2023-01-28 09:58:46,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 133.6) internal successors, (1336), 10 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:46,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:46,765 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] [2023-01-28 09:58:46,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 09:58:46,765 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 3 more)] === [2023-01-28 09:58:46,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:46,765 INFO L85 PathProgramCache]: Analyzing trace with hash -72860955, now seen corresponding path program 7 times [2023-01-28 09:58:46,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:46,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947221013] [2023-01-28 09:58:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:46,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:46,932 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 09:58:46,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:46,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947221013] [2023-01-28 09:58:46,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947221013] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:46,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:46,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:58:46,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412530426] [2023-01-28 09:58:46,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:46,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:58:46,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:46,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:58:46,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:58:46,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-28 09:58:46,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 321 transitions, 3939 flow. Second operand has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:46,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:46,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-28 09:58:46,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:54,453 INFO L130 PetriNetUnfolder]: 52693/80659 cut-off events. [2023-01-28 09:58:54,453 INFO L131 PetriNetUnfolder]: For 470916/484287 co-relation queries the response was YES. [2023-01-28 09:58:54,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373274 conditions, 80659 events. 52693/80659 cut-off events. For 470916/484287 co-relation queries the response was YES. Maximal size of possible extension queue 4008. Compared 664669 event pairs, 16059 based on Foata normal form. 1300/78809 useless extension candidates. Maximal degree in co-relation 296902. Up to 62649 conditions per place. [2023-01-28 09:58:55,526 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 200 selfloop transitions, 159 changer transitions 16/404 dead transitions. [2023-01-28 09:58:55,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 404 transitions, 5302 flow [2023-01-28 09:58:55,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:58:55,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:58:55,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1309 transitions. [2023-01-28 09:58:55,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175958877026493 [2023-01-28 09:58:55,528 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1309 transitions. [2023-01-28 09:58:55,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1309 transitions. [2023-01-28 09:58:55,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:55,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1309 transitions. [2023-01-28 09:58:55,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.44444444444446) internal successors, (1309), 9 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:55,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:55,533 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:55,533 INFO L175 Difference]: Start difference. First operand has 125 places, 321 transitions, 3939 flow. Second operand 9 states and 1309 transitions. [2023-01-28 09:58:55,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 404 transitions, 5302 flow [2023-01-28 09:58:58,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 404 transitions, 5189 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-01-28 09:58:58,795 INFO L231 Difference]: Finished difference. Result has 128 places, 335 transitions, 4563 flow [2023-01-28 09:58:58,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=3706, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4563, PETRI_PLACES=128, PETRI_TRANSITIONS=335} [2023-01-28 09:58:58,796 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 70 predicate places. [2023-01-28 09:58:58,796 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 335 transitions, 4563 flow [2023-01-28 09:58:58,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:58,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:58,796 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] [2023-01-28 09:58:58,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 09:58:58,797 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 3 more)] === [2023-01-28 09:58:58,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:58,797 INFO L85 PathProgramCache]: Analyzing trace with hash -156230979, now seen corresponding path program 8 times [2023-01-28 09:58:58,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:58,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425572994] [2023-01-28 09:58:58,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:58,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:58,925 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 09:58:58,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:58,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425572994] [2023-01-28 09:58:58,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425572994] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:58,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:58,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:58:58,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180424461] [2023-01-28 09:58:58,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:58,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:58:58,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:58,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:58:58,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:58:58,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-28 09:58:58,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 335 transitions, 4563 flow. Second operand has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:58:58,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:58,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-28 09:58:58,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:59:06,042 INFO L130 PetriNetUnfolder]: 47585/73441 cut-off events. [2023-01-28 09:59:06,043 INFO L131 PetriNetUnfolder]: For 433084/441886 co-relation queries the response was YES. [2023-01-28 09:59:06,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341779 conditions, 73441 events. 47585/73441 cut-off events. For 433084/441886 co-relation queries the response was YES. Maximal size of possible extension queue 3871. Compared 607612 event pairs, 15596 based on Foata normal form. 1202/71697 useless extension candidates. Maximal degree in co-relation 341326. Up to 57735 conditions per place. [2023-01-28 09:59:06,835 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 178 selfloop transitions, 151 changer transitions 20/377 dead transitions. [2023-01-28 09:59:06,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 377 transitions, 5533 flow [2023-01-28 09:59:06,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:59:06,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:59:06,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1011 transitions. [2023-01-28 09:59:06,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5139806812404677 [2023-01-28 09:59:06,845 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1011 transitions. [2023-01-28 09:59:06,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1011 transitions. [2023-01-28 09:59:06,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:59:06,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1011 transitions. [2023-01-28 09:59:06,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 144.42857142857142) internal successors, (1011), 7 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:06,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:06,866 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:06,866 INFO L175 Difference]: Start difference. First operand has 128 places, 335 transitions, 4563 flow. Second operand 7 states and 1011 transitions. [2023-01-28 09:59:06,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 377 transitions, 5533 flow [2023-01-28 09:59:08,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 377 transitions, 5353 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-01-28 09:59:08,557 INFO L231 Difference]: Finished difference. Result has 126 places, 324 transitions, 4751 flow [2023-01-28 09:59:08,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=4010, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4751, PETRI_PLACES=126, PETRI_TRANSITIONS=324} [2023-01-28 09:59:08,558 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 68 predicate places. [2023-01-28 09:59:08,558 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 324 transitions, 4751 flow [2023-01-28 09:59:08,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:08,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:59:08,558 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] [2023-01-28 09:59:08,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 09:59:08,559 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 3 more)] === [2023-01-28 09:59:08,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:59:08,559 INFO L85 PathProgramCache]: Analyzing trace with hash -977038993, now seen corresponding path program 9 times [2023-01-28 09:59:08,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:59:08,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47952750] [2023-01-28 09:59:08,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:59:08,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:59:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:59:08,728 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 09:59:08,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:59:08,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47952750] [2023-01-28 09:59:08,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47952750] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:59:08,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:59:08,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:59:08,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871142335] [2023-01-28 09:59:08,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:59:08,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:59:08,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:59:08,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:59:08,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:59:08,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-28 09:59:08,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 324 transitions, 4751 flow. Second operand has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:08,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:59:08,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-28 09:59:08,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:59:15,683 INFO L130 PetriNetUnfolder]: 45993/71560 cut-off events. [2023-01-28 09:59:15,683 INFO L131 PetriNetUnfolder]: For 392738/402925 co-relation queries the response was YES. [2023-01-28 09:59:16,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329380 conditions, 71560 events. 45993/71560 cut-off events. For 392738/402925 co-relation queries the response was YES. Maximal size of possible extension queue 3768. Compared 598508 event pairs, 16223 based on Foata normal form. 932/69863 useless extension candidates. Maximal degree in co-relation 329344. Up to 58847 conditions per place. [2023-01-28 09:59:16,432 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 295 selfloop transitions, 50 changer transitions 0/372 dead transitions. [2023-01-28 09:59:16,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 372 transitions, 5883 flow [2023-01-28 09:59:16,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:59:16,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:59:16,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 723 transitions. [2023-01-28 09:59:16,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145907473309609 [2023-01-28 09:59:16,434 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 723 transitions. [2023-01-28 09:59:16,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 723 transitions. [2023-01-28 09:59:16,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:59:16,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 723 transitions. [2023-01-28 09:59:16,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:16,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:16,451 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:16,451 INFO L175 Difference]: Start difference. First operand has 126 places, 324 transitions, 4751 flow. Second operand 5 states and 723 transitions. [2023-01-28 09:59:16,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 372 transitions, 5883 flow [2023-01-28 09:59:18,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 372 transitions, 5655 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-01-28 09:59:18,533 INFO L231 Difference]: Finished difference. Result has 113 places, 332 transitions, 4836 flow [2023-01-28 09:59:18,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=4383, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4836, PETRI_PLACES=113, PETRI_TRANSITIONS=332} [2023-01-28 09:59:18,533 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 55 predicate places. [2023-01-28 09:59:18,533 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 332 transitions, 4836 flow [2023-01-28 09:59:18,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:18,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:59:18,534 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] [2023-01-28 09:59:18,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 09:59:18,534 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 3 more)] === [2023-01-28 09:59:18,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:59:18,534 INFO L85 PathProgramCache]: Analyzing trace with hash -444821677, now seen corresponding path program 10 times [2023-01-28 09:59:18,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:59:18,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394489159] [2023-01-28 09:59:18,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:59:18,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:59:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:59:18,713 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 09:59:18,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:59:18,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394489159] [2023-01-28 09:59:18,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394489159] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:59:18,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:59:18,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:59:18,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435901949] [2023-01-28 09:59:18,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:59:18,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:59:18,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:59:18,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:59:18,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:59:18,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-28 09:59:18,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 332 transitions, 4836 flow. Second operand has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:18,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:59:18,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-28 09:59:18,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:59:25,320 INFO L130 PetriNetUnfolder]: 45908/71973 cut-off events. [2023-01-28 09:59:25,320 INFO L131 PetriNetUnfolder]: For 355428/365764 co-relation queries the response was YES. [2023-01-28 09:59:25,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317514 conditions, 71973 events. 45908/71973 cut-off events. For 355428/365764 co-relation queries the response was YES. Maximal size of possible extension queue 3721. Compared 605377 event pairs, 9981 based on Foata normal form. 2652/71980 useless extension candidates. Maximal degree in co-relation 317481. Up to 44942 conditions per place. [2023-01-28 09:59:26,015 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 231 selfloop transitions, 238 changer transitions 0/496 dead transitions. [2023-01-28 09:59:26,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 496 transitions, 7138 flow [2023-01-28 09:59:26,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 09:59:26,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 09:59:26,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1594 transitions. [2023-01-28 09:59:26,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5156907149789712 [2023-01-28 09:59:26,018 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1594 transitions. [2023-01-28 09:59:26,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1594 transitions. [2023-01-28 09:59:26,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:59:26,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1594 transitions. [2023-01-28 09:59:26,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 144.9090909090909) internal successors, (1594), 11 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:26,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:26,023 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:26,023 INFO L175 Difference]: Start difference. First operand has 113 places, 332 transitions, 4836 flow. Second operand 11 states and 1594 transitions. [2023-01-28 09:59:26,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 496 transitions, 7138 flow [2023-01-28 09:59:27,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 496 transitions, 7088 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 09:59:27,300 INFO L231 Difference]: Finished difference. Result has 123 places, 386 transitions, 6192 flow [2023-01-28 09:59:27,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=4786, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6192, PETRI_PLACES=123, PETRI_TRANSITIONS=386} [2023-01-28 09:59:27,301 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 65 predicate places. [2023-01-28 09:59:27,301 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 386 transitions, 6192 flow [2023-01-28 09:59:27,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:27,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:59:27,301 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] [2023-01-28 09:59:27,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 09:59:27,302 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 3 more)] === [2023-01-28 09:59:27,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:59:27,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1085046347, now seen corresponding path program 11 times [2023-01-28 09:59:27,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:59:27,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806558323] [2023-01-28 09:59:27,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:59:27,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:59:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:59:27,458 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 09:59:27,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:59:27,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806558323] [2023-01-28 09:59:27,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806558323] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:59:27,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:59:27,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:59:27,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069593649] [2023-01-28 09:59:27,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:59:27,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:59:27,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:59:27,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:59:27,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:59:27,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-28 09:59:27,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 386 transitions, 6192 flow. Second operand has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:27,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:59:27,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-28 09:59:27,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:59:35,220 INFO L130 PetriNetUnfolder]: 46704/73161 cut-off events. [2023-01-28 09:59:35,220 INFO L131 PetriNetUnfolder]: For 460825/474473 co-relation queries the response was YES. [2023-01-28 09:59:36,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347926 conditions, 73161 events. 46704/73161 cut-off events. For 460825/474473 co-relation queries the response was YES. Maximal size of possible extension queue 3753. Compared 615344 event pairs, 10463 based on Foata normal form. 4456/74946 useless extension candidates. Maximal degree in co-relation 347891. Up to 45586 conditions per place. [2023-01-28 09:59:36,622 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 232 selfloop transitions, 250 changer transitions 0/509 dead transitions. [2023-01-28 09:59:36,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 509 transitions, 8028 flow [2023-01-28 09:59:36,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 09:59:36,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 09:59:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1600 transitions. [2023-01-28 09:59:36,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.517631834357813 [2023-01-28 09:59:36,627 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1600 transitions. [2023-01-28 09:59:36,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1600 transitions. [2023-01-28 09:59:36,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:59:36,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1600 transitions. [2023-01-28 09:59:36,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 145.45454545454547) internal successors, (1600), 11 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:36,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:36,642 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:36,642 INFO L175 Difference]: Start difference. First operand has 123 places, 386 transitions, 6192 flow. Second operand 11 states and 1600 transitions. [2023-01-28 09:59:36,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 509 transitions, 8028 flow [2023-01-28 09:59:38,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 509 transitions, 7694 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-01-28 09:59:38,586 INFO L231 Difference]: Finished difference. Result has 130 places, 405 transitions, 6867 flow [2023-01-28 09:59:38,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=5874, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6867, PETRI_PLACES=130, PETRI_TRANSITIONS=405} [2023-01-28 09:59:38,587 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 72 predicate places. [2023-01-28 09:59:38,587 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 405 transitions, 6867 flow [2023-01-28 09:59:38,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:38,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:59:38,588 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] [2023-01-28 09:59:38,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 09:59:38,588 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 3 more)] === [2023-01-28 09:59:38,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:59:38,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1710255359, now seen corresponding path program 12 times [2023-01-28 09:59:38,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:59:38,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139301648] [2023-01-28 09:59:38,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:59:38,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:59:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:59:38,802 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 09:59:38,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:59:38,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139301648] [2023-01-28 09:59:38,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139301648] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:59:38,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:59:38,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:59:38,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299610859] [2023-01-28 09:59:38,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:59:38,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:59:38,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:59:38,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:59:38,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:59:38,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-28 09:59:38,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 405 transitions, 6867 flow. Second operand has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:38,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:59:38,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-28 09:59:38,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:59:49,983 INFO L130 PetriNetUnfolder]: 47161/74505 cut-off events. [2023-01-28 09:59:49,984 INFO L131 PetriNetUnfolder]: For 530125/551656 co-relation queries the response was YES. [2023-01-28 09:59:50,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373452 conditions, 74505 events. 47161/74505 cut-off events. For 530125/551656 co-relation queries the response was YES. Maximal size of possible extension queue 3938. Compared 639660 event pairs, 8013 based on Foata normal form. 8133/79817 useless extension candidates. Maximal degree in co-relation 373415. Up to 31268 conditions per place. [2023-01-28 09:59:51,091 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 193 selfloop transitions, 327 changer transitions 6/553 dead transitions. [2023-01-28 09:59:51,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 553 transitions, 9176 flow [2023-01-28 09:59:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:59:51,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:59:51,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1331 transitions. [2023-01-28 09:59:51,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262949782522737 [2023-01-28 09:59:51,094 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1331 transitions. [2023-01-28 09:59:51,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1331 transitions. [2023-01-28 09:59:51,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:59:51,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1331 transitions. [2023-01-28 09:59:51,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 147.88888888888889) internal successors, (1331), 9 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:51,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:51,099 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:51,099 INFO L175 Difference]: Start difference. First operand has 130 places, 405 transitions, 6867 flow. Second operand 9 states and 1331 transitions. [2023-01-28 09:59:51,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 553 transitions, 9176 flow [2023-01-28 09:59:54,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 553 transitions, 8967 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-01-28 09:59:54,271 INFO L231 Difference]: Finished difference. Result has 135 places, 445 transitions, 8175 flow [2023-01-28 09:59:54,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=6696, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8175, PETRI_PLACES=135, PETRI_TRANSITIONS=445} [2023-01-28 09:59:54,272 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 77 predicate places. [2023-01-28 09:59:54,273 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 445 transitions, 8175 flow [2023-01-28 09:59:54,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:54,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:59:54,273 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] [2023-01-28 09:59:54,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 09:59:54,273 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 3 more)] === [2023-01-28 09:59:54,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:59:54,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1006455521, now seen corresponding path program 13 times [2023-01-28 09:59:54,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:59:54,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907413819] [2023-01-28 09:59:54,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:59:54,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:59:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:59:54,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:59:54,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:59:54,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907413819] [2023-01-28 09:59:54,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907413819] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:59:54,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:59:54,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 09:59:54,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772721184] [2023-01-28 09:59:54,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:59:54,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 09:59:54,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:59:54,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 09:59:54,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-01-28 09:59:54,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-28 09:59:54,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 445 transitions, 8175 flow. Second operand has 11 states, 11 states have (on average 133.27272727272728) internal successors, (1466), 11 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:59:54,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:59:54,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-28 09:59:54,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:00:07,898 INFO L130 PetriNetUnfolder]: 55494/88480 cut-off events. [2023-01-28 10:00:07,899 INFO L131 PetriNetUnfolder]: For 824747/847499 co-relation queries the response was YES. [2023-01-28 10:00:08,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470900 conditions, 88480 events. 55494/88480 cut-off events. For 824747/847499 co-relation queries the response was YES. Maximal size of possible extension queue 4912. Compared 791366 event pairs, 13611 based on Foata normal form. 7426/92345 useless extension candidates. Maximal degree in co-relation 470862. Up to 47855 conditions per place. [2023-01-28 10:00:09,195 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 342 selfloop transitions, 316 changer transitions 1/686 dead transitions. [2023-01-28 10:00:09,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 686 transitions, 12055 flow [2023-01-28 10:00:09,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 10:00:09,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 10:00:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2605 transitions. [2023-01-28 10:00:09,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150257018584421 [2023-01-28 10:00:09,198 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2605 transitions. [2023-01-28 10:00:09,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2605 transitions. [2023-01-28 10:00:09,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:00:09,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2605 transitions. [2023-01-28 10:00:09,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 144.72222222222223) internal successors, (2605), 18 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:09,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:09,234 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:09,234 INFO L175 Difference]: Start difference. First operand has 135 places, 445 transitions, 8175 flow. Second operand 18 states and 2605 transitions. [2023-01-28 10:00:09,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 686 transitions, 12055 flow [2023-01-28 10:00:12,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 686 transitions, 11573 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 10:00:12,064 INFO L231 Difference]: Finished difference. Result has 153 places, 542 transitions, 10556 flow [2023-01-28 10:00:12,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=7809, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10556, PETRI_PLACES=153, PETRI_TRANSITIONS=542} [2023-01-28 10:00:12,065 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 95 predicate places. [2023-01-28 10:00:12,065 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 542 transitions, 10556 flow [2023-01-28 10:00:12,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.27272727272728) internal successors, (1466), 11 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:12,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:00:12,065 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] [2023-01-28 10:00:12,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 10:00:12,066 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 3 more)] === [2023-01-28 10:00:12,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:00:12,066 INFO L85 PathProgramCache]: Analyzing trace with hash -27895093, now seen corresponding path program 14 times [2023-01-28 10:00:12,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:00:12,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122827637] [2023-01-28 10:00:12,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:00:12,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:00:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:00:12,228 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 10:00:12,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:00:12,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122827637] [2023-01-28 10:00:12,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122827637] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:00:12,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:00:12,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 10:00:12,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363110992] [2023-01-28 10:00:12,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:00:12,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 10:00:12,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:00:12,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 10:00:12,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 10:00:12,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-28 10:00:12,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 542 transitions, 10556 flow. Second operand has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:12,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:00:12,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-28 10:00:12,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:00:25,708 INFO L130 PetriNetUnfolder]: 55468/88956 cut-off events. [2023-01-28 10:00:25,709 INFO L131 PetriNetUnfolder]: For 1006395/1028238 co-relation queries the response was YES. [2023-01-28 10:00:26,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493933 conditions, 88956 events. 55468/88956 cut-off events. For 1006395/1028238 co-relation queries the response was YES. Maximal size of possible extension queue 4801. Compared 799264 event pairs, 16756 based on Foata normal form. 3102/88762 useless extension candidates. Maximal degree in co-relation 493890. Up to 67607 conditions per place. [2023-01-28 10:00:27,306 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 454 selfloop transitions, 226 changer transitions 11/718 dead transitions. [2023-01-28 10:00:27,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 718 transitions, 14442 flow [2023-01-28 10:00:27,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 10:00:27,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 10:00:27,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1733 transitions. [2023-01-28 10:00:27,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513938315539739 [2023-01-28 10:00:27,309 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1733 transitions. [2023-01-28 10:00:27,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1733 transitions. [2023-01-28 10:00:27,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:00:27,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1733 transitions. [2023-01-28 10:00:27,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.41666666666666) internal successors, (1733), 12 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:27,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 281.0) internal successors, (3653), 13 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:27,316 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 281.0) internal successors, (3653), 13 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:27,316 INFO L175 Difference]: Start difference. First operand has 153 places, 542 transitions, 10556 flow. Second operand 12 states and 1733 transitions. [2023-01-28 10:00:27,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 718 transitions, 14442 flow [2023-01-28 10:00:34,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 718 transitions, 14095 flow, removed 61 selfloop flow, removed 5 redundant places. [2023-01-28 10:00:34,259 INFO L231 Difference]: Finished difference. Result has 160 places, 604 transitions, 12381 flow [2023-01-28 10:00:34,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=10279, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12381, PETRI_PLACES=160, PETRI_TRANSITIONS=604} [2023-01-28 10:00:34,260 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 102 predicate places. [2023-01-28 10:00:34,260 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 604 transitions, 12381 flow [2023-01-28 10:00:34,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:34,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:00:34,261 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] [2023-01-28 10:00:34,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 10:00:34,261 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 3 more)] === [2023-01-28 10:00:34,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:00:34,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1533231369, now seen corresponding path program 15 times [2023-01-28 10:00:34,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:00:34,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120501407] [2023-01-28 10:00:34,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:00:34,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:00:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:00:34,510 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 10:00:34,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:00:34,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120501407] [2023-01-28 10:00:34,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120501407] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:00:34,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:00:34,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 10:00:34,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913026032] [2023-01-28 10:00:34,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:00:34,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 10:00:34,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:00:34,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 10:00:34,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 10:00:34,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 281 [2023-01-28 10:00:34,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 604 transitions, 12381 flow. Second operand has 8 states, 8 states have (on average 124.25) internal successors, (994), 8 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:00:34,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:00:34,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 281 [2023-01-28 10:00:34,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:00,244 INFO L130 PetriNetUnfolder]: 106658/152519 cut-off events. [2023-01-28 10:01:00,244 INFO L131 PetriNetUnfolder]: For 1373639/1373639 co-relation queries the response was YES. [2023-01-28 10:01:01,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820192 conditions, 152519 events. 106658/152519 cut-off events. For 1373639/1373639 co-relation queries the response was YES. Maximal size of possible extension queue 5184. Compared 1137372 event pairs, 21897 based on Foata normal form. 2592/155111 useless extension candidates. Maximal degree in co-relation 820147. Up to 59518 conditions per place. [2023-01-28 10:01:02,231 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 328 selfloop transitions, 554 changer transitions 8/890 dead transitions. [2023-01-28 10:01:02,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 890 transitions, 16763 flow [2023-01-28 10:01:02,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 10:01:02,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 10:01:02,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1662 transitions. [2023-01-28 10:01:02,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928825622775801 [2023-01-28 10:01:02,233 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1662 transitions. [2023-01-28 10:01:02,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1662 transitions. [2023-01-28 10:01:02,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:02,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1662 transitions. [2023-01-28 10:01:02,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 138.5) internal successors, (1662), 12 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:02,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 281.0) internal successors, (3653), 13 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:02,253 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 281.0) internal successors, (3653), 13 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:02,253 INFO L175 Difference]: Start difference. First operand has 160 places, 604 transitions, 12381 flow. Second operand 12 states and 1662 transitions. [2023-01-28 10:01:02,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 890 transitions, 16763 flow [2023-01-28 10:01:17,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 890 transitions, 16295 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-01-28 10:01:17,745 INFO L231 Difference]: Finished difference. Result has 167 places, 672 transitions, 14889 flow [2023-01-28 10:01:17,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=11941, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=481, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14889, PETRI_PLACES=167, PETRI_TRANSITIONS=672} [2023-01-28 10:01:17,746 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 109 predicate places. [2023-01-28 10:01:17,747 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 672 transitions, 14889 flow [2023-01-28 10:01:17,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 124.25) internal successors, (994), 8 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:17,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:17,747 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] [2023-01-28 10:01:17,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 10:01:17,747 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 3 more)] === [2023-01-28 10:01:17,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:17,747 INFO L85 PathProgramCache]: Analyzing trace with hash -218457063, now seen corresponding path program 16 times [2023-01-28 10:01:17,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:17,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531185790] [2023-01-28 10:01:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:17,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:17,944 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 10:01:17,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:17,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531185790] [2023-01-28 10:01:17,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531185790] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:01:17,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:01:17,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 10:01:17,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574827682] [2023-01-28 10:01:17,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:01:17,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 10:01:17,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:17,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 10:01:17,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 10:01:17,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-28 10:01:17,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 672 transitions, 14889 flow. Second operand has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:17,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:17,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-28 10:01:17,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:24,713 INFO L130 PetriNetUnfolder]: 31302/52977 cut-off events. [2023-01-28 10:01:24,713 INFO L131 PetriNetUnfolder]: For 581636/599340 co-relation queries the response was YES. [2023-01-28 10:01:25,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295682 conditions, 52977 events. 31302/52977 cut-off events. For 581636/599340 co-relation queries the response was YES. Maximal size of possible extension queue 2641. Compared 477424 event pairs, 7055 based on Foata normal form. 7280/58417 useless extension candidates. Maximal degree in co-relation 295633. Up to 22433 conditions per place. [2023-01-28 10:01:25,481 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 215 selfloop transitions, 756 changer transitions 11/1004 dead transitions. [2023-01-28 10:01:25,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 1004 transitions, 22708 flow [2023-01-28 10:01:25,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 10:01:25,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 10:01:25,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1618 transitions. [2023-01-28 10:01:25,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234551924943384 [2023-01-28 10:01:25,484 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1618 transitions. [2023-01-28 10:01:25,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1618 transitions. [2023-01-28 10:01:25,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:25,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1618 transitions. [2023-01-28 10:01:25,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 147.0909090909091) internal successors, (1618), 11 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:25,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:25,489 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:25,489 INFO L175 Difference]: Start difference. First operand has 167 places, 672 transitions, 14889 flow. Second operand 11 states and 1618 transitions. [2023-01-28 10:01:25,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 1004 transitions, 22708 flow [2023-01-28 10:01:30,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 1004 transitions, 21599 flow, removed 39 selfloop flow, removed 9 redundant places. [2023-01-28 10:01:30,040 INFO L231 Difference]: Finished difference. Result has 171 places, 874 transitions, 20912 flow [2023-01-28 10:01:30,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=12218, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20912, PETRI_PLACES=171, PETRI_TRANSITIONS=874} [2023-01-28 10:01:30,041 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 113 predicate places. [2023-01-28 10:01:30,041 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 874 transitions, 20912 flow [2023-01-28 10:01:30,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:30,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:30,042 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] [2023-01-28 10:01:30,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 10:01:30,042 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 3 more)] === [2023-01-28 10:01:30,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:30,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1679870159, now seen corresponding path program 17 times [2023-01-28 10:01:30,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:30,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994151950] [2023-01-28 10:01:30,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:30,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:30,216 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 10:01:30,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:30,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994151950] [2023-01-28 10:01:30,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994151950] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:01:30,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:01:30,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 10:01:30,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041249703] [2023-01-28 10:01:30,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:01:30,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 10:01:30,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:30,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 10:01:30,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-28 10:01:30,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-28 10:01:30,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 874 transitions, 20912 flow. Second operand has 10 states, 10 states have (on average 133.6) internal successors, (1336), 10 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:01:30,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:30,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-28 10:01:30,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand