/usr/bin/java -Xmx8000000000 -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-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/01b_inc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 23:29:02,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 23:29:02,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 23:29:02,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 23:29:02,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 23:29:02,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 23:29:02,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 23:29:02,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 23:29:02,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 23:29:02,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 23:29:02,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 23:29:02,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 23:29:02,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 23:29:02,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 23:29:02,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 23:29:02,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 23:29:02,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 23:29:02,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 23:29:02,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 23:29:02,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 23:29:02,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 23:29:02,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 23:29:02,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 23:29:02,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 23:29:02,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 23:29:02,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 23:29:02,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 23:29:02,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 23:29:02,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 23:29:02,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 23:29:02,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 23:29:02,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 23:29:02,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 23:29:02,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 23:29:02,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 23:29:02,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 23:29:02,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 23:29:02,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 23:29:02,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 23:29:02,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 23:29:02,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 23:29:02,446 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-NoLbe.epf [2022-12-11 23:29:02,464 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 23:29:02,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 23:29:02,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 23:29:02,466 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 23:29:02,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 23:29:02,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 23:29:02,467 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 23:29:02,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 23:29:02,467 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 23:29:02,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 23:29:02,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 23:29:02,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 23:29:02,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 23:29:02,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 23:29:02,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 23:29:02,469 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 23:29:02,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 23:29:02,469 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 23:29:02,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 23:29:02,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 23:29:02,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 23:29:02,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 23:29:02,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 23:29:02,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 23:29:02,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 23:29:02,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 23:29:02,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 23:29:02,470 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 23:29:02,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 23:29:02,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 23:29:02,470 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 23:29:02,470 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-11 23:29:02,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 23:29:02,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 23:29:02,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 23:29:02,737 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 23:29:02,737 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 23:29:02,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/01b_inc.i [2022-12-11 23:29:03,718 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 23:29:03,934 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 23:29:03,934 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc.i [2022-12-11 23:29:03,947 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a294249a/09779ba62a374fb3aed0bd6636ca4311/FLAGb04ceabf8 [2022-12-11 23:29:03,962 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a294249a/09779ba62a374fb3aed0bd6636ca4311 [2022-12-11 23:29:03,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 23:29:03,969 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 23:29:03,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 23:29:03,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 23:29:03,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 23:29:03,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 11:29:03" (1/1) ... [2022-12-11 23:29:03,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22c6c595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:29:03, skipping insertion in model container [2022-12-11 23:29:03,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 11:29:03" (1/1) ... [2022-12-11 23:29:03,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 23:29:04,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 23:29:04,171 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-11 23:29:04,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:29:04,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:29:04,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:29:04,277 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc.i[31005,31018] [2022-12-11 23:29:04,280 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:29:04,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 23:29:04,291 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 23:29:04,308 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-11 23:29:04,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:29:04,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:29:04,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 23:29:04,326 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc.i[31005,31018] [2022-12-11 23:29:04,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 23:29:04,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 23:29:04,356 INFO L208 MainTranslator]: Completed translation [2022-12-11 23:29:04,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:29:04 WrapperNode [2022-12-11 23:29:04,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 23:29:04,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 23:29:04,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 23:29:04,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 23:29:04,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:29:04" (1/1) ... [2022-12-11 23:29:04,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:29:04" (1/1) ... [2022-12-11 23:29:04,398 INFO L138 Inliner]: procedures = 173, calls = 20, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 62 [2022-12-11 23:29:04,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 23:29:04,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 23:29:04,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 23:29:04,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 23:29:04,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:29:04" (1/1) ... [2022-12-11 23:29:04,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:29:04" (1/1) ... [2022-12-11 23:29:04,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:29:04" (1/1) ... [2022-12-11 23:29:04,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:29:04" (1/1) ... [2022-12-11 23:29:04,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:29:04" (1/1) ... [2022-12-11 23:29:04,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:29:04" (1/1) ... [2022-12-11 23:29:04,412 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:29:04" (1/1) ... [2022-12-11 23:29:04,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:29:04" (1/1) ... [2022-12-11 23:29:04,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 23:29:04,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 23:29:04,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 23:29:04,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 23:29:04,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:29:04" (1/1) ... [2022-12-11 23:29:04,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 23:29:04,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:29:04,438 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) [2022-12-11 23:29:04,449 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 [2022-12-11 23:29:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-11 23:29:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-11 23:29:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 23:29:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 23:29:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 23:29:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 23:29:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 23:29:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 23:29:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 23:29:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 23:29:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 23:29:04,477 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 23:29:04,610 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 23:29:04,612 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 23:29:04,767 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 23:29:04,816 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 23:29:04,816 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-11 23:29:04,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 11:29:04 BoogieIcfgContainer [2022-12-11 23:29:04,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 23:29:04,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 23:29:04,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 23:29:04,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 23:29:04,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 11:29:03" (1/3) ... [2022-12-11 23:29:04,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c82063a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 11:29:04, skipping insertion in model container [2022-12-11 23:29:04,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:29:04" (2/3) ... [2022-12-11 23:29:04,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c82063a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 11:29:04, skipping insertion in model container [2022-12-11 23:29:04,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 11:29:04" (3/3) ... [2022-12-11 23:29:04,831 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc.i [2022-12-11 23:29:04,844 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 23:29:04,846 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 23:29:04,846 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 23:29:04,900 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-11 23:29:04,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 85 flow [2022-12-11 23:29:04,969 INFO L130 PetriNetUnfolder]: 3/50 cut-off events. [2022-12-11 23:29:04,970 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 23:29:04,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 50 events. 3/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 26. Up to 4 conditions per place. [2022-12-11 23:29:04,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 85 flow [2022-12-11 23:29:04,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 40 transitions, 85 flow [2022-12-11 23:29:04,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 23:29:04,995 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;@62b9adb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 23:29:04,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-11 23:29:05,014 INFO L130 PetriNetUnfolder]: 2/44 cut-off events. [2022-12-11 23:29:05,015 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 23:29:05,015 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:29:05,015 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:29:05,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-11 23:29:05,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:29:05,020 INFO L85 PathProgramCache]: Analyzing trace with hash 930813123, now seen corresponding path program 1 times [2022-12-11 23:29:05,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:29:05,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258842670] [2022-12-11 23:29:05,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:29:05,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:29:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-11 23:29:05,130 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-11 23:29:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-11 23:29:05,182 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-11 23:29:05,183 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-11 23:29:05,184 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-12-11 23:29:05,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-12-11 23:29:05,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-12-11 23:29:05,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 23:29:05,186 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-11 23:29:05,188 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-11 23:29:05,188 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-11 23:29:05,213 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-11 23:29:05,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 55 transitions, 122 flow [2022-12-11 23:29:05,239 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2022-12-11 23:29:05,240 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 23:29:05,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 5/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 134 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 51. Up to 6 conditions per place. [2022-12-11 23:29:05,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 55 transitions, 122 flow [2022-12-11 23:29:05,242 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 55 transitions, 122 flow [2022-12-11 23:29:05,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 23:29:05,246 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;@62b9adb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 23:29:05,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-11 23:29:05,258 INFO L130 PetriNetUnfolder]: 2/49 cut-off events. [2022-12-11 23:29:05,258 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-11 23:29:05,258 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:29:05,258 INFO L214 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] [2022-12-11 23:29:05,258 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-11 23:29:05,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:29:05,259 INFO L85 PathProgramCache]: Analyzing trace with hash -646241126, now seen corresponding path program 1 times [2022-12-11 23:29:05,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:29:05,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17836584] [2022-12-11 23:29:05,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:29:05,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:29:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:29:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:29:05,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:29:05,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17836584] [2022-12-11 23:29:05,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17836584] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:29:05,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:29:05,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 23:29:05,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970299927] [2022-12-11 23:29:05,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:29:05,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 23:29:05,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:29:05,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 23:29:05,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-11 23:29:05,571 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 55 [2022-12-11 23:29:05,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:29:05,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:29:05,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 55 [2022-12-11 23:29:05,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:29:05,744 INFO L130 PetriNetUnfolder]: 85/308 cut-off events. [2022-12-11 23:29:05,744 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-12-11 23:29:05,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 308 events. 85/308 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1515 event pairs, 37 based on Foata normal form. 122/391 useless extension candidates. Maximal degree in co-relation 416. Up to 69 conditions per place. [2022-12-11 23:29:05,747 INFO L137 encePairwiseOnDemand]: 45/55 looper letters, 40 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2022-12-11 23:29:05,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 272 flow [2022-12-11 23:29:05,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-11 23:29:05,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-11 23:29:05,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 249 transitions. [2022-12-11 23:29:05,759 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7545454545454545 [2022-12-11 23:29:05,763 INFO L295 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2022-12-11 23:29:05,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 76 transitions, 272 flow [2022-12-11 23:29:05,768 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 76 transitions, 272 flow [2022-12-11 23:29:05,769 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 76 transitions, 272 flow [2022-12-11 23:29:05,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:29:05,773 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:29:05,774 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:29:05,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 23:29:05,774 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-12-11 23:29:05,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:29:05,774 INFO L85 PathProgramCache]: Analyzing trace with hash 689144050, now seen corresponding path program 1 times [2022-12-11 23:29:05,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:29:05,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303352466] [2022-12-11 23:29:05,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:29:05,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:29:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-11 23:29:05,796 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-11 23:29:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-11 23:29:05,813 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-11 23:29:05,814 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-11 23:29:05,814 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-12-11 23:29:05,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-12-11 23:29:05,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-12-11 23:29:05,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-12-11 23:29:05,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 23:29:05,814 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-11 23:29:05,815 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-11 23:29:05,815 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-11 23:29:05,844 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-11 23:29:05,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 70 transitions, 161 flow [2022-12-11 23:29:05,856 INFO L130 PetriNetUnfolder]: 7/104 cut-off events. [2022-12-11 23:29:05,856 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-11 23:29:05,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 104 events. 7/104 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 214 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 81. Up to 8 conditions per place. [2022-12-11 23:29:05,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 70 transitions, 161 flow [2022-12-11 23:29:05,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 70 transitions, 161 flow [2022-12-11 23:29:05,860 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 23:29:05,862 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;@62b9adb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 23:29:05,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-11 23:29:05,866 INFO L130 PetriNetUnfolder]: 2/49 cut-off events. [2022-12-11 23:29:05,866 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-11 23:29:05,866 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:29:05,867 INFO L214 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] [2022-12-11 23:29:05,867 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-11 23:29:05,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:29:05,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1540076050, now seen corresponding path program 1 times [2022-12-11 23:29:05,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:29:05,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89685795] [2022-12-11 23:29:05,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:29:05,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:29:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:29:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:29:06,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:29:06,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89685795] [2022-12-11 23:29:06,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89685795] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:29:06,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:29:06,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 23:29:06,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153191749] [2022-12-11 23:29:06,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:29:06,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 23:29:06,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:29:06,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 23:29:06,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-11 23:29:06,043 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2022-12-11 23:29:06,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:29:06,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:29:06,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2022-12-11 23:29:06,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:29:06,627 INFO L130 PetriNetUnfolder]: 2447/4857 cut-off events. [2022-12-11 23:29:06,627 INFO L131 PetriNetUnfolder]: For 712/712 co-relation queries the response was YES. [2022-12-11 23:29:06,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9273 conditions, 4857 events. 2447/4857 cut-off events. For 712/712 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 37993 event pairs, 845 based on Foata normal form. 1527/5580 useless extension candidates. Maximal degree in co-relation 8051. Up to 1793 conditions per place. [2022-12-11 23:29:06,667 INFO L137 encePairwiseOnDemand]: 58/70 looper letters, 89 selfloop transitions, 12 changer transitions 0/133 dead transitions. [2022-12-11 23:29:06,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 133 transitions, 527 flow [2022-12-11 23:29:06,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-11 23:29:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-11 23:29:06,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 333 transitions. [2022-12-11 23:29:06,672 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7928571428571428 [2022-12-11 23:29:06,673 INFO L295 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2022-12-11 23:29:06,673 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 133 transitions, 527 flow [2022-12-11 23:29:06,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 133 transitions, 527 flow [2022-12-11 23:29:06,700 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 133 transitions, 527 flow [2022-12-11 23:29:06,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:29:06,700 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:29:06,700 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:29:06,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 23:29:06,701 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-11 23:29:06,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:29:06,701 INFO L85 PathProgramCache]: Analyzing trace with hash 336946251, now seen corresponding path program 1 times [2022-12-11 23:29:06,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:29:06,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870646558] [2022-12-11 23:29:06,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:29:06,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:29:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:29:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:29:06,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:29:06,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870646558] [2022-12-11 23:29:06,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870646558] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:29:06,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:29:06,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 23:29:06,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828627915] [2022-12-11 23:29:06,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:29:06,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 23:29:06,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:29:06,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 23:29:06,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-11 23:29:06,856 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2022-12-11 23:29:06,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 133 transitions, 527 flow. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:29:06,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:29:06,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2022-12-11 23:29:06,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:29:07,643 INFO L130 PetriNetUnfolder]: 3422/6968 cut-off events. [2022-12-11 23:29:07,643 INFO L131 PetriNetUnfolder]: For 979/1080 co-relation queries the response was YES. [2022-12-11 23:29:07,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18662 conditions, 6968 events. 3422/6968 cut-off events. For 979/1080 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 58707 event pairs, 817 based on Foata normal form. 0/5847 useless extension candidates. Maximal degree in co-relation 15258. Up to 2718 conditions per place. [2022-12-11 23:29:07,698 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 174 selfloop transitions, 21 changer transitions 0/228 dead transitions. [2022-12-11 23:29:07,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 228 transitions, 1330 flow [2022-12-11 23:29:07,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-11 23:29:07,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-11 23:29:07,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 317 transitions. [2022-12-11 23:29:07,699 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7547619047619047 [2022-12-11 23:29:07,700 INFO L295 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2022-12-11 23:29:07,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 228 transitions, 1330 flow [2022-12-11 23:29:07,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 228 transitions, 1330 flow [2022-12-11 23:29:07,737 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 228 transitions, 1330 flow [2022-12-11 23:29:07,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:29:07,737 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:29:07,737 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:29:07,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 23:29:07,737 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-11 23:29:07,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:29:07,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1432583234, now seen corresponding path program 1 times [2022-12-11 23:29:07,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:29:07,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760467067] [2022-12-11 23:29:07,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:29:07,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:29:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-11 23:29:07,748 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-11 23:29:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-11 23:29:07,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-11 23:29:07,757 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-11 23:29:07,758 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-12-11 23:29:07,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-11 23:29:07,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-12-11 23:29:07,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-12-11 23:29:07,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-12-11 23:29:07,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 23:29:07,758 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-11 23:29:07,759 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-11 23:29:07,759 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-11 23:29:07,785 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-11 23:29:07,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 85 transitions, 202 flow [2022-12-11 23:29:07,798 INFO L130 PetriNetUnfolder]: 9/131 cut-off events. [2022-12-11 23:29:07,798 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-11 23:29:07,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 131 events. 9/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 266 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 112. Up to 10 conditions per place. [2022-12-11 23:29:07,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 85 transitions, 202 flow [2022-12-11 23:29:07,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 85 transitions, 202 flow [2022-12-11 23:29:07,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 23:29:07,805 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;@62b9adb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 23:29:07,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-11 23:29:07,807 INFO L130 PetriNetUnfolder]: 2/49 cut-off events. [2022-12-11 23:29:07,807 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-11 23:29:07,807 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:29:07,808 INFO L214 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] [2022-12-11 23:29:07,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-11 23:29:07,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:29:07,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1687058479, now seen corresponding path program 1 times [2022-12-11 23:29:07,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:29:07,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135266258] [2022-12-11 23:29:07,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:29:07,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:29:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:29:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:29:07,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:29:07,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135266258] [2022-12-11 23:29:07,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135266258] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:29:07,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:29:07,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 23:29:07,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350287646] [2022-12-11 23:29:07,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:29:07,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 23:29:07,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:29:07,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 23:29:07,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-11 23:29:07,926 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 85 [2022-12-11 23:29:07,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 85 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:29:07,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:29:07,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 85 [2022-12-11 23:29:07,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:29:12,969 INFO L130 PetriNetUnfolder]: 44351/70794 cut-off events. [2022-12-11 23:29:12,969 INFO L131 PetriNetUnfolder]: For 15385/15385 co-relation queries the response was YES. [2022-12-11 23:29:13,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139244 conditions, 70794 events. 44351/70794 cut-off events. For 15385/15385 co-relation queries the response was YES. Maximal size of possible extension queue 3210. Compared 618733 event pairs, 21629 based on Foata normal form. 17293/74853 useless extension candidates. Maximal degree in co-relation 58478. Up to 30317 conditions per place. [2022-12-11 23:29:13,793 INFO L137 encePairwiseOnDemand]: 71/85 looper letters, 126 selfloop transitions, 15 changer transitions 0/178 dead transitions. [2022-12-11 23:29:13,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 178 transitions, 744 flow [2022-12-11 23:29:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-11 23:29:13,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-11 23:29:13,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 405 transitions. [2022-12-11 23:29:13,796 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7941176470588235 [2022-12-11 23:29:13,798 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 0 predicate places. [2022-12-11 23:29:13,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 178 transitions, 744 flow [2022-12-11 23:29:14,078 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 178 transitions, 744 flow [2022-12-11 23:29:14,078 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 178 transitions, 744 flow [2022-12-11 23:29:14,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:29:14,078 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:29:14,078 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:29:14,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 23:29:14,079 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-11 23:29:14,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:29:14,079 INFO L85 PathProgramCache]: Analyzing trace with hash 368241035, now seen corresponding path program 1 times [2022-12-11 23:29:14,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:29:14,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399525917] [2022-12-11 23:29:14,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:29:14,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:29:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:29:14,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:29:14,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:29:14,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399525917] [2022-12-11 23:29:14,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399525917] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:29:14,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:29:14,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 23:29:14,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287301824] [2022-12-11 23:29:14,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:29:14,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 23:29:14,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:29:14,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 23:29:14,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-11 23:29:14,151 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 85 [2022-12-11 23:29:14,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 178 transitions, 744 flow. Second operand has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:29:14,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:29:14,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 85 [2022-12-11 23:29:14,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:29:22,418 INFO L130 PetriNetUnfolder]: 70795/118232 cut-off events. [2022-12-11 23:29:22,418 INFO L131 PetriNetUnfolder]: For 27617/31005 co-relation queries the response was YES. [2022-12-11 23:29:23,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326043 conditions, 118232 events. 70795/118232 cut-off events. For 27617/31005 co-relation queries the response was YES. Maximal size of possible extension queue 5120. Compared 1167226 event pairs, 23746 based on Foata normal form. 34/97401 useless extension candidates. Maximal degree in co-relation 27452. Up to 51002 conditions per place. [2022-12-11 23:29:23,645 INFO L137 encePairwiseOnDemand]: 77/85 looper letters, 280 selfloop transitions, 27 changer transitions 0/345 dead transitions. [2022-12-11 23:29:23,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 345 transitions, 2122 flow [2022-12-11 23:29:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-11 23:29:23,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-11 23:29:23,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 387 transitions. [2022-12-11 23:29:23,646 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7588235294117647 [2022-12-11 23:29:23,647 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 5 predicate places. [2022-12-11 23:29:23,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 345 transitions, 2122 flow [2022-12-11 23:29:24,232 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 345 transitions, 2122 flow [2022-12-11 23:29:24,232 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 345 transitions, 2122 flow [2022-12-11 23:29:24,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:29:24,233 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:29:24,233 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:29:24,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-11 23:29:24,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-11 23:29:24,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:29:24,233 INFO L85 PathProgramCache]: Analyzing trace with hash 458506100, now seen corresponding path program 1 times [2022-12-11 23:29:24,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:29:24,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610151300] [2022-12-11 23:29:24,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:29:24,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:29:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:29:24,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:29:24,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:29:24,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610151300] [2022-12-11 23:29:24,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610151300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:29:24,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:29:24,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 23:29:24,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911345458] [2022-12-11 23:29:24,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:29:24,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 23:29:24,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:29:24,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 23:29:24,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-11 23:29:24,483 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 85 [2022-12-11 23:29:24,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 345 transitions, 2122 flow. Second operand has 7 states, 7 states have (on average 42.142857142857146) internal successors, (295), 7 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:29:24,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:29:24,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 85 [2022-12-11 23:29:24,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:29:34,031 INFO L130 PetriNetUnfolder]: 72477/122205 cut-off events. [2022-12-11 23:29:34,031 INFO L131 PetriNetUnfolder]: For 27590/31235 co-relation queries the response was YES. [2022-12-11 23:29:34,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438062 conditions, 122205 events. 72477/122205 cut-off events. For 27590/31235 co-relation queries the response was YES. Maximal size of possible extension queue 5364. Compared 1233003 event pairs, 23268 based on Foata normal form. 105/101598 useless extension candidates. Maximal degree in co-relation 52879. Up to 56577 conditions per place. [2022-12-11 23:29:35,326 INFO L137 encePairwiseOnDemand]: 72/85 looper letters, 343 selfloop transitions, 34 changer transitions 0/413 dead transitions. [2022-12-11 23:29:35,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 413 transitions, 3312 flow [2022-12-11 23:29:35,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 23:29:35,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 23:29:35,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 581 transitions. [2022-12-11 23:29:35,335 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7594771241830065 [2022-12-11 23:29:35,336 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 13 predicate places. [2022-12-11 23:29:35,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 413 transitions, 3312 flow [2022-12-11 23:29:36,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 413 transitions, 3312 flow [2022-12-11 23:29:36,101 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 413 transitions, 3312 flow [2022-12-11 23:29:36,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 42.142857142857146) internal successors, (295), 7 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:29:36,101 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:29:36,101 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:29:36,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-11 23:29:36,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-11 23:29:36,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:29:36,102 INFO L85 PathProgramCache]: Analyzing trace with hash 72676010, now seen corresponding path program 2 times [2022-12-11 23:29:36,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:29:36,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475266159] [2022-12-11 23:29:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:29:36,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:29:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:29:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:29:36,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:29:36,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475266159] [2022-12-11 23:29:36,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475266159] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:29:36,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:29:36,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 23:29:36,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343380523] [2022-12-11 23:29:36,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:29:36,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 23:29:36,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:29:36,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 23:29:36,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 23:29:36,249 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 85 [2022-12-11 23:29:36,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 413 transitions, 3312 flow. Second operand has 6 states, 6 states have (on average 42.5) internal successors, (255), 6 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:29:36,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:29:36,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 85 [2022-12-11 23:29:36,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:29:51,790 INFO L130 PetriNetUnfolder]: 103663/173373 cut-off events. [2022-12-11 23:29:51,790 INFO L131 PetriNetUnfolder]: For 37127/41984 co-relation queries the response was YES. [2022-12-11 23:29:52,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772727 conditions, 173373 events. 103663/173373 cut-off events. For 37127/41984 co-relation queries the response was YES. Maximal size of possible extension queue 7432. Compared 1810580 event pairs, 24938 based on Foata normal form. 150/145026 useless extension candidates. Maximal degree in co-relation 171217. Up to 101140 conditions per place. [2022-12-11 23:29:53,778 INFO L137 encePairwiseOnDemand]: 74/85 looper letters, 498 selfloop transitions, 39 changer transitions 0/573 dead transitions. [2022-12-11 23:29:53,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 573 transitions, 5755 flow [2022-12-11 23:29:53,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 23:29:53,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 23:29:53,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 517 transitions. [2022-12-11 23:29:53,789 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7602941176470588 [2022-12-11 23:29:53,789 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 20 predicate places. [2022-12-11 23:29:53,789 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 573 transitions, 5755 flow [2022-12-11 23:29:54,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 573 transitions, 5755 flow [2022-12-11 23:29:54,914 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 573 transitions, 5755 flow [2022-12-11 23:29:54,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.5) internal successors, (255), 6 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:29:54,915 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:29:54,915 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:29:54,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-11 23:29:54,915 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-11 23:29:54,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:29:54,915 INFO L85 PathProgramCache]: Analyzing trace with hash 269990000, now seen corresponding path program 1 times [2022-12-11 23:29:54,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:29:54,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241222122] [2022-12-11 23:29:54,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:29:54,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:29:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:29:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:29:55,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:29:55,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241222122] [2022-12-11 23:29:55,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241222122] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:29:55,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:29:55,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 23:29:55,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246205161] [2022-12-11 23:29:55,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:29:55,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 23:29:55,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:29:55,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 23:29:55,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-11 23:29:55,025 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 85 [2022-12-11 23:29:55,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 573 transitions, 5755 flow. Second operand has 7 states, 7 states have (on average 42.142857142857146) internal successors, (295), 7 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:29:55,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:29:55,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 85 [2022-12-11 23:29:55,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:30:11,630 INFO L130 PetriNetUnfolder]: 102203/171273 cut-off events. [2022-12-11 23:30:11,631 INFO L131 PetriNetUnfolder]: For 41510/47934 co-relation queries the response was YES. [2022-12-11 23:30:12,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907705 conditions, 171273 events. 102203/171273 cut-off events. For 41510/47934 co-relation queries the response was YES. Maximal size of possible extension queue 7340. Compared 1786156 event pairs, 27941 based on Foata normal form. 149/143943 useless extension candidates. Maximal degree in co-relation 217195. Up to 102736 conditions per place. [2022-12-11 23:30:13,858 INFO L137 encePairwiseOnDemand]: 72/85 looper letters, 550 selfloop transitions, 52 changer transitions 0/638 dead transitions. [2022-12-11 23:30:13,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 638 transitions, 7637 flow [2022-12-11 23:30:13,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 23:30:13,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 23:30:13,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 580 transitions. [2022-12-11 23:30:13,860 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7581699346405228 [2022-12-11 23:30:13,860 INFO L295 CegarLoopForPetriNet]: 89 programPoint places, 28 predicate places. [2022-12-11 23:30:13,860 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 638 transitions, 7637 flow [2022-12-11 23:30:15,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 638 transitions, 7637 flow [2022-12-11 23:30:15,135 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 638 transitions, 7637 flow [2022-12-11 23:30:15,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 42.142857142857146) internal successors, (295), 7 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:30:15,135 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:30:15,135 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:30:15,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-11 23:30:15,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-12-11 23:30:15,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:30:15,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1902837654, now seen corresponding path program 2 times [2022-12-11 23:30:15,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:30:15,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635194945] [2022-12-11 23:30:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:30:15,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:30:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:30:15,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 23:30:15,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:30:15,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635194945] [2022-12-11 23:30:15,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635194945] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:30:15,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:30:15,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 23:30:15,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346717117] [2022-12-11 23:30:15,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:30:15,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 23:30:15,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:30:15,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 23:30:15,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 23:30:15,278 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 85 [2022-12-11 23:30:15,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 638 transitions, 7637 flow. Second operand has 6 states, 6 states have (on average 42.5) internal successors, (255), 6 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 23:30:15,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:30:15,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 85 [2022-12-11 23:30:15,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand