/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-3-extended.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 20:05:42,321 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 20:05:42,394 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 20:05:42,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 20:05:42,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 20:05:42,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 20:05:42,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 20:05:42,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 20:05:42,435 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 20:05:42,438 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 20:05:42,439 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 20:05:42,440 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 20:05:42,441 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 20:05:42,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 20:05:42,442 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 20:05:42,442 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 20:05:42,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 20:05:42,443 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 20:05:42,443 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 20:05:42,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 20:05:42,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 20:05:42,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 20:05:42,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 20:05:42,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 20:05:42,445 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 20:05:42,446 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 20:05:42,446 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 20:05:42,446 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 20:05:42,447 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 20:05:42,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 20:05:42,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:05:42,448 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 20:05:42,448 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 20:05:42,448 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 20:05:42,448 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 20:05:42,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 20:05:42,449 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 20:05:42,449 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 20:05:42,449 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 20:05:42,449 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 20:05:42,449 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 20:05:42,450 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 20:05:42,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 20:05:42,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 20:05:42,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 20:05:42,710 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 20:05:42,710 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 20:05:42,711 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-3-extended.wvr_bound2.c [2023-08-03 20:05:43,863 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 20:05:44,030 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 20:05:44,031 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-3-extended.wvr_bound2.c [2023-08-03 20:05:44,037 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aad9773dc/ea878dce8a1d47438505598d57d58c20/FLAG6bf85fc7f [2023-08-03 20:05:44,052 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aad9773dc/ea878dce8a1d47438505598d57d58c20 [2023-08-03 20:05:44,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 20:05:44,055 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 20:05:44,056 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 20:05:44,056 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 20:05:44,059 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 20:05:44,060 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:05:44" (1/1) ... [2023-08-03 20:05:44,060 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ecce056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:05:44, skipping insertion in model container [2023-08-03 20:05:44,061 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:05:44" (1/1) ... [2023-08-03 20:05:44,081 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 20:05:44,253 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-3-extended.wvr_bound2.c[3099,3112] [2023-08-03 20:05:44,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:05:44,262 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 20:05:44,284 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-3-extended.wvr_bound2.c[3099,3112] [2023-08-03 20:05:44,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:05:44,292 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:05:44,292 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:05:44,297 INFO L206 MainTranslator]: Completed translation [2023-08-03 20:05:44,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:05:44 WrapperNode [2023-08-03 20:05:44,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 20:05:44,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 20:05:44,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 20:05:44,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 20:05:44,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:05:44" (1/1) ... [2023-08-03 20:05:44,312 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:05:44" (1/1) ... [2023-08-03 20:05:44,330 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 119 [2023-08-03 20:05:44,330 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 20:05:44,331 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 20:05:44,331 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 20:05:44,331 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 20:05:44,342 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:05:44" (1/1) ... [2023-08-03 20:05:44,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:05:44" (1/1) ... [2023-08-03 20:05:44,345 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:05:44" (1/1) ... [2023-08-03 20:05:44,345 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:05:44" (1/1) ... [2023-08-03 20:05:44,351 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:05:44" (1/1) ... [2023-08-03 20:05:44,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:05:44" (1/1) ... [2023-08-03 20:05:44,359 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:05:44" (1/1) ... [2023-08-03 20:05:44,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:05:44" (1/1) ... [2023-08-03 20:05:44,366 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 20:05:44,367 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 20:05:44,367 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 20:05:44,367 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 20:05:44,368 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:05:44" (1/1) ... [2023-08-03 20:05:44,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:05:44,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:05:44,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 20:05:44,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 20:05:44,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 20:05:44,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 20:05:44,449 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 20:05:44,449 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 20:05:44,449 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 20:05:44,449 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 20:05:44,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 20:05:44,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 20:05:44,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 20:05:44,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 20:05:44,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 20:05:44,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 20:05:44,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 20:05:44,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 20:05:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 20:05:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 20:05:44,454 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 20:05:44,570 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 20:05:44,572 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 20:05:44,892 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 20:05:44,909 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 20:05:44,909 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-03 20:05:44,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:05:44 BoogieIcfgContainer [2023-08-03 20:05:44,912 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 20:05:44,914 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 20:05:44,914 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 20:05:44,916 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 20:05:44,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 08:05:44" (1/3) ... [2023-08-03 20:05:44,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4c3454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:05:44, skipping insertion in model container [2023-08-03 20:05:44,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:05:44" (2/3) ... [2023-08-03 20:05:44,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4c3454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:05:44, skipping insertion in model container [2023-08-03 20:05:44,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:05:44" (3/3) ... [2023-08-03 20:05:44,919 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_parallel-misc-3-extended.wvr_bound2.c [2023-08-03 20:05:44,924 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 20:05:44,931 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 20:05:44,931 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 20:05:44,931 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 20:05:44,994 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 20:05:45,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 175 transitions, 392 flow [2023-08-03 20:05:45,227 INFO L124 PetriNetUnfolderBase]: 117/675 cut-off events. [2023-08-03 20:05:45,228 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:05:45,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 675 events. 117/675 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3560 event pairs, 0 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 354. Up to 16 conditions per place. [2023-08-03 20:05:45,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 175 transitions, 392 flow [2023-08-03 20:05:45,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 175 transitions, 392 flow [2023-08-03 20:05:45,256 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:05:45,268 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 175 transitions, 392 flow [2023-08-03 20:05:45,273 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 175 transitions, 392 flow [2023-08-03 20:05:45,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 175 transitions, 392 flow [2023-08-03 20:05:45,344 INFO L124 PetriNetUnfolderBase]: 117/675 cut-off events. [2023-08-03 20:05:45,344 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:05:45,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 675 events. 117/675 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3560 event pairs, 0 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 354. Up to 16 conditions per place. [2023-08-03 20:05:45,363 INFO L119 LiptonReduction]: Number of co-enabled transitions 10260 [2023-08-03 20:05:49,443 INFO L134 LiptonReduction]: Checked pairs total: 13399 [2023-08-03 20:05:49,444 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-08-03 20:05:49,457 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:05:49,463 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=true, 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;@3b049da7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:05:49,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:05:49,468 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:05:49,468 INFO L124 PetriNetUnfolderBase]: 3/29 cut-off events. [2023-08-03 20:05:49,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:05:49,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:05:49,469 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 20:05:49,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:05:49,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:05:49,474 INFO L85 PathProgramCache]: Analyzing trace with hash -340574275, now seen corresponding path program 1 times [2023-08-03 20:05:49,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:05:49,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056338499] [2023-08-03 20:05:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:05:49,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:05:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:05:49,587 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 20:05:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:05:49,619 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 20:05:49,621 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 20:05:49,621 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 20:05:49,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 20:05:49,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 20:05:49,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 20:05:49,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 20:05:49,624 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 20:05:49,627 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 20:05:49,627 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 20:05:49,659 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 20:05:49,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 241 transitions, 572 flow [2023-08-03 20:05:50,234 INFO L124 PetriNetUnfolderBase]: 964/4316 cut-off events. [2023-08-03 20:05:50,234 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:05:50,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4990 conditions, 4316 events. 964/4316 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 34591 event pairs, 11 based on Foata normal form. 0/3596 useless extension candidates. Maximal degree in co-relation 2561. Up to 192 conditions per place. [2023-08-03 20:05:50,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 241 transitions, 572 flow [2023-08-03 20:05:50,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 241 transitions, 572 flow [2023-08-03 20:05:50,308 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:05:50,309 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 241 transitions, 572 flow [2023-08-03 20:05:50,309 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 241 transitions, 572 flow [2023-08-03 20:05:50,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 241 transitions, 572 flow [2023-08-03 20:05:50,820 INFO L124 PetriNetUnfolderBase]: 964/4316 cut-off events. [2023-08-03 20:05:50,821 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:05:50,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4990 conditions, 4316 events. 964/4316 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 34591 event pairs, 11 based on Foata normal form. 0/3596 useless extension candidates. Maximal degree in co-relation 2561. Up to 192 conditions per place. [2023-08-03 20:05:50,951 INFO L119 LiptonReduction]: Number of co-enabled transitions 28620 [2023-08-03 20:05:53,843 INFO L134 LiptonReduction]: Checked pairs total: 117155 [2023-08-03 20:05:53,843 INFO L136 LiptonReduction]: Total number of compositions: 154 [2023-08-03 20:05:53,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:05:53,852 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=true, 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;@3b049da7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:05:53,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:05:53,858 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:05:53,859 INFO L124 PetriNetUnfolderBase]: 2/35 cut-off events. [2023-08-03 20:05:53,859 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 20:05:53,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:05:53,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:05:53,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:05:53,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:05:53,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1909286761, now seen corresponding path program 1 times [2023-08-03 20:05:53,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:05:53,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736541354] [2023-08-03 20:05:53,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:05:53,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:05:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:05:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:05:54,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:05:54,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736541354] [2023-08-03 20:05:54,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736541354] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:05:54,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:05:54,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 20:05:54,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131273052] [2023-08-03 20:05:54,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:05:54,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:05:54,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:05:54,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:05:54,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:05:54,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 395 [2023-08-03 20:05:54,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 113 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:05:54,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:05:54,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 395 [2023-08-03 20:05:54,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:06:30,450 INFO L124 PetriNetUnfolderBase]: 473551/566965 cut-off events. [2023-08-03 20:06:30,450 INFO L125 PetriNetUnfolderBase]: For 40126/40126 co-relation queries the response was YES. [2023-08-03 20:06:33,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143640 conditions, 566965 events. 473551/566965 cut-off events. For 40126/40126 co-relation queries the response was YES. Maximal size of possible extension queue 17336. Compared 3160559 event pairs, 180344 based on Foata normal form. 0/438532 useless extension candidates. Maximal degree in co-relation 311298. Up to 543301 conditions per place. [2023-08-03 20:06:36,051 INFO L140 encePairwiseOnDemand]: 391/395 looper letters, 77 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2023-08-03 20:06:36,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 120 transitions, 488 flow [2023-08-03 20:06:36,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:06:36,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:06:36,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 666 transitions. [2023-08-03 20:06:36,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5620253164556962 [2023-08-03 20:06:36,066 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 666 transitions. [2023-08-03 20:06:36,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 666 transitions. [2023-08-03 20:06:36,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:06:36,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 666 transitions. [2023-08-03 20:06:36,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:36,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:36,083 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:36,085 INFO L175 Difference]: Start difference. First operand has 90 places, 113 transitions, 316 flow. Second operand 3 states and 666 transitions. [2023-08-03 20:06:36,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 120 transitions, 488 flow [2023-08-03 20:06:36,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 120 transitions, 488 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:06:36,130 INFO L231 Difference]: Finished difference. Result has 92 places, 113 transitions, 326 flow [2023-08-03 20:06:36,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=92, PETRI_TRANSITIONS=113} [2023-08-03 20:06:36,134 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 2 predicate places. [2023-08-03 20:06:36,135 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 113 transitions, 326 flow [2023-08-03 20:06:36,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:36,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:36,135 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 20:06:36,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 20:06:36,136 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:06:36,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:36,136 INFO L85 PathProgramCache]: Analyzing trace with hash 472764338, now seen corresponding path program 1 times [2023-08-03 20:06:36,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:36,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906874123] [2023-08-03 20:06:36,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:36,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:06:36,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:36,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906874123] [2023-08-03 20:06:36,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906874123] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:06:36,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288993419] [2023-08-03 20:06:36,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:36,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:36,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:06:36,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:06:36,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 20:06:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:36,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:06:36,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:06:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:06:36,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:06:36,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288993419] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:06:36,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:06:36,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 20:06:36,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366517499] [2023-08-03 20:06:36,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:06:36,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:06:36,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:06:36,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:06:36,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:06:36,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 395 [2023-08-03 20:06:36,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 113 transitions, 326 flow. Second operand has 5 states, 5 states have (on average 195.6) internal successors, (978), 5 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:36,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:06:36,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 395 [2023-08-03 20:06:36,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:07:12,071 INFO L124 PetriNetUnfolderBase]: 473475/566877 cut-off events. [2023-08-03 20:07:12,071 INFO L125 PetriNetUnfolderBase]: For 40266/40266 co-relation queries the response was YES. [2023-08-03 20:07:16,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143511 conditions, 566877 events. 473475/566877 cut-off events. For 40266/40266 co-relation queries the response was YES. Maximal size of possible extension queue 17230. Compared 3162299 event pairs, 166364 based on Foata normal form. 16/438594 useless extension candidates. Maximal degree in co-relation 380805. Up to 543164 conditions per place. [2023-08-03 20:07:19,818 INFO L140 encePairwiseOnDemand]: 391/395 looper letters, 88 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2023-08-03 20:07:19,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 132 transitions, 546 flow [2023-08-03 20:07:19,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:07:19,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:07:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1063 transitions. [2023-08-03 20:07:19,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382278481012658 [2023-08-03 20:07:19,833 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1063 transitions. [2023-08-03 20:07:19,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1063 transitions. [2023-08-03 20:07:19,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:07:19,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1063 transitions. [2023-08-03 20:07:19,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 212.6) internal successors, (1063), 5 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:07:19,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 395.0) internal successors, (2370), 6 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:07:19,864 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 395.0) internal successors, (2370), 6 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:07:19,865 INFO L175 Difference]: Start difference. First operand has 92 places, 113 transitions, 326 flow. Second operand 5 states and 1063 transitions. [2023-08-03 20:07:19,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 132 transitions, 546 flow [2023-08-03 20:07:19,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 132 transitions, 536 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 20:07:19,901 INFO L231 Difference]: Finished difference. Result has 94 places, 113 transitions, 331 flow [2023-08-03 20:07:19,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=331, PETRI_PLACES=94, PETRI_TRANSITIONS=113} [2023-08-03 20:07:19,902 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 4 predicate places. [2023-08-03 20:07:19,902 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 113 transitions, 331 flow [2023-08-03 20:07:19,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 195.6) internal successors, (978), 5 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:07:19,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:07:19,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:07:19,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 20:07:20,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:07:20,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:07:20,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:07:20,110 INFO L85 PathProgramCache]: Analyzing trace with hash -316873783, now seen corresponding path program 1 times [2023-08-03 20:07:20,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:07:20,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555627937] [2023-08-03 20:07:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:07:20,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:07:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:07:20,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:07:20,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:07:20,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555627937] [2023-08-03 20:07:20,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555627937] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:07:20,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378156756] [2023-08-03 20:07:20,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:07:20,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:07:20,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:07:20,233 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:07:20,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 20:07:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:07:20,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:07:20,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:07:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 20:07:20,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:07:20,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378156756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:07:20,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:07:20,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 20:07:20,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523661161] [2023-08-03 20:07:20,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:07:20,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:07:20,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:07:20,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:07:20,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:07:20,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 395 [2023-08-03 20:07:20,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 113 transitions, 331 flow. Second operand has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:07:20,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:07:20,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 395 [2023-08-03 20:07:20,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:07:57,889 INFO L124 PetriNetUnfolderBase]: 469595/560970 cut-off events. [2023-08-03 20:07:57,890 INFO L125 PetriNetUnfolderBase]: For 35400/35400 co-relation queries the response was YES. [2023-08-03 20:08:01,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128771 conditions, 560970 events. 469595/560970 cut-off events. For 35400/35400 co-relation queries the response was YES. Maximal size of possible extension queue 17936. Compared 3101698 event pairs, 186197 based on Foata normal form. 0/434139 useless extension candidates. Maximal degree in co-relation 250520. Up to 538244 conditions per place. [2023-08-03 20:08:04,636 INFO L140 encePairwiseOnDemand]: 392/395 looper letters, 88 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2023-08-03 20:08:04,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 131 transitions, 549 flow [2023-08-03 20:08:04,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:08:04,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:08:04,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 675 transitions. [2023-08-03 20:08:04,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.569620253164557 [2023-08-03 20:08:04,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 675 transitions. [2023-08-03 20:08:04,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 675 transitions. [2023-08-03 20:08:04,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:08:04,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 675 transitions. [2023-08-03 20:08:04,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:08:04,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:08:04,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:08:04,671 INFO L175 Difference]: Start difference. First operand has 94 places, 113 transitions, 331 flow. Second operand 3 states and 675 transitions. [2023-08-03 20:08:04,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 131 transitions, 549 flow [2023-08-03 20:08:04,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 131 transitions, 542 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:08:04,695 INFO L231 Difference]: Finished difference. Result has 95 places, 114 transitions, 339 flow [2023-08-03 20:08:04,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=95, PETRI_TRANSITIONS=114} [2023-08-03 20:08:04,697 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 5 predicate places. [2023-08-03 20:08:04,698 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 114 transitions, 339 flow [2023-08-03 20:08:04,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:08:04,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:08:04,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:08:04,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 20:08:04,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 20:08:04,909 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:08:04,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:08:04,910 INFO L85 PathProgramCache]: Analyzing trace with hash 371607090, now seen corresponding path program 1 times [2023-08-03 20:08:04,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:08:04,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525598720] [2023-08-03 20:08:04,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:08:04,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:08:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:08:05,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 20:08:05,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:08:05,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525598720] [2023-08-03 20:08:05,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525598720] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:08:05,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982910035] [2023-08-03 20:08:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:08:05,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:08:05,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:08:05,026 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:08:05,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 20:08:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:08:05,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:08:05,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:08:05,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 20:08:05,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:08:05,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982910035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:08:05,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:08:05,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 20:08:05,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184217323] [2023-08-03 20:08:05,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:08:05,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:08:05,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:08:05,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:08:05,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:08:05,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 395 [2023-08-03 20:08:05,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 114 transitions, 339 flow. Second operand has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:08:05,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:08:05,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 395 [2023-08-03 20:08:05,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:08:43,873 INFO L124 PetriNetUnfolderBase]: 469415/562590 cut-off events. [2023-08-03 20:08:43,874 INFO L125 PetriNetUnfolderBase]: For 29545/29545 co-relation queries the response was YES. [2023-08-03 20:08:47,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1130691 conditions, 562590 events. 469415/562590 cut-off events. For 29545/29545 co-relation queries the response was YES. Maximal size of possible extension queue 18820. Compared 3127535 event pairs, 201816 based on Foata normal form. 0/437099 useless extension candidates. Maximal degree in co-relation 250999. Up to 530694 conditions per place. [2023-08-03 20:08:50,984 INFO L140 encePairwiseOnDemand]: 392/395 looper letters, 98 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2023-08-03 20:08:50,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 140 transitions, 591 flow [2023-08-03 20:08:50,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:08:50,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:08:51,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2023-08-03 20:08:51,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763713080168776 [2023-08-03 20:08:51,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2023-08-03 20:08:51,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2023-08-03 20:08:51,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:08:51,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2023-08-03 20:08:51,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:08:51,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:08:51,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:08:51,015 INFO L175 Difference]: Start difference. First operand has 95 places, 114 transitions, 339 flow. Second operand 3 states and 683 transitions. [2023-08-03 20:08:51,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 140 transitions, 591 flow [2023-08-03 20:08:51,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 140 transitions, 588 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:08:51,058 INFO L231 Difference]: Finished difference. Result has 97 places, 115 transitions, 348 flow [2023-08-03 20:08:51,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=97, PETRI_TRANSITIONS=115} [2023-08-03 20:08:51,059 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 7 predicate places. [2023-08-03 20:08:51,059 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 115 transitions, 348 flow [2023-08-03 20:08:51,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:08:51,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:08:51,060 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:08:51,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 20:08:51,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:08:51,268 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:08:51,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:08:51,268 INFO L85 PathProgramCache]: Analyzing trace with hash 191083926, now seen corresponding path program 1 times [2023-08-03 20:08:51,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:08:51,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659684588] [2023-08-03 20:08:51,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:08:51,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:08:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:08:51,345 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:08:51,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:08:51,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659684588] [2023-08-03 20:08:51,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659684588] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:08:51,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144607267] [2023-08-03 20:08:51,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:08:51,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:08:51,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:08:51,353 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:08:51,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 20:08:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:08:51,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:08:51,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:08:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:08:51,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:08:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:08:51,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144607267] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:08:51,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:08:51,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 20:08:51,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057851302] [2023-08-03 20:08:51,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:08:51,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:08:51,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:08:51,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:08:51,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:08:51,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 395 [2023-08-03 20:08:51,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 115 transitions, 348 flow. Second operand has 5 states, 5 states have (on average 196.6) internal successors, (983), 5 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:08:51,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:08:51,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 395 [2023-08-03 20:08:51,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:09:28,916 INFO L124 PetriNetUnfolderBase]: 457459/547106 cut-off events. [2023-08-03 20:09:28,916 INFO L125 PetriNetUnfolderBase]: For 30760/30760 co-relation queries the response was YES. [2023-08-03 20:09:32,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1105496 conditions, 547106 events. 457459/547106 cut-off events. For 30760/30760 co-relation queries the response was YES. Maximal size of possible extension queue 18890. Compared 3023805 event pairs, 162488 based on Foata normal form. 4/427697 useless extension candidates. Maximal degree in co-relation 271642. Up to 524609 conditions per place. [2023-08-03 20:09:36,036 INFO L140 encePairwiseOnDemand]: 392/395 looper letters, 90 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2023-08-03 20:09:36,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 133 transitions, 566 flow [2023-08-03 20:09:36,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:09:36,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:09:36,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 868 transitions. [2023-08-03 20:09:36,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.549367088607595 [2023-08-03 20:09:36,039 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 868 transitions. [2023-08-03 20:09:36,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 868 transitions. [2023-08-03 20:09:36,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:09:36,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 868 transitions. [2023-08-03 20:09:36,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:09:36,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:09:36,045 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:09:36,045 INFO L175 Difference]: Start difference. First operand has 97 places, 115 transitions, 348 flow. Second operand 4 states and 868 transitions. [2023-08-03 20:09:36,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 133 transitions, 566 flow [2023-08-03 20:09:36,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 133 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:09:36,071 INFO L231 Difference]: Finished difference. Result has 99 places, 114 transitions, 344 flow [2023-08-03 20:09:36,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=99, PETRI_TRANSITIONS=114} [2023-08-03 20:09:36,072 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2023-08-03 20:09:36,072 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 114 transitions, 344 flow [2023-08-03 20:09:36,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.6) internal successors, (983), 5 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:09:36,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:09:36,073 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:09:36,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 20:09:36,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:09:36,282 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:09:36,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:09:36,282 INFO L85 PathProgramCache]: Analyzing trace with hash -267146173, now seen corresponding path program 1 times [2023-08-03 20:09:36,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:09:36,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562833675] [2023-08-03 20:09:36,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:09:36,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:09:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:09:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 20:09:36,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:09:36,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562833675] [2023-08-03 20:09:36,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562833675] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:09:36,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012257782] [2023-08-03 20:09:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:09:36,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:09:36,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:09:36,387 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:09:36,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 20:09:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:09:36,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:09:36,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:09:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 20:09:36,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:09:36,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012257782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:09:36,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:09:36,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:09:36,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657003990] [2023-08-03 20:09:36,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:09:36,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:09:36,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:09:36,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:09:36,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:09:36,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 395 [2023-08-03 20:09:36,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 114 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 196.6) internal successors, (983), 5 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:09:36,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:09:36,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 395 [2023-08-03 20:09:36,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:10:11,267 INFO L124 PetriNetUnfolderBase]: 456643/546042 cut-off events. [2023-08-03 20:10:11,268 INFO L125 PetriNetUnfolderBase]: For 30254/30254 co-relation queries the response was YES. [2023-08-03 20:10:15,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102725 conditions, 546042 events. 456643/546042 cut-off events. For 30254/30254 co-relation queries the response was YES. Maximal size of possible extension queue 18879. Compared 3017971 event pairs, 83578 based on Foata normal form. 144/427065 useless extension candidates. Maximal degree in co-relation 270840. Up to 521856 conditions per place. [2023-08-03 20:10:18,733 INFO L140 encePairwiseOnDemand]: 391/395 looper letters, 120 selfloop transitions, 4 changer transitions 0/163 dead transitions. [2023-08-03 20:10:18,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 163 transitions, 690 flow [2023-08-03 20:10:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:10:18,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:10:18,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1093 transitions. [2023-08-03 20:10:18,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5534177215189874 [2023-08-03 20:10:18,736 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1093 transitions. [2023-08-03 20:10:18,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1093 transitions. [2023-08-03 20:10:18,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:10:18,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1093 transitions. [2023-08-03 20:10:18,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.6) internal successors, (1093), 5 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:10:18,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 395.0) internal successors, (2370), 6 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:10:18,742 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 395.0) internal successors, (2370), 6 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:10:18,742 INFO L175 Difference]: Start difference. First operand has 99 places, 114 transitions, 344 flow. Second operand 5 states and 1093 transitions. [2023-08-03 20:10:18,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 163 transitions, 690 flow [2023-08-03 20:10:18,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 163 transitions, 676 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 20:10:18,806 INFO L231 Difference]: Finished difference. Result has 99 places, 114 transitions, 347 flow [2023-08-03 20:10:18,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=347, PETRI_PLACES=99, PETRI_TRANSITIONS=114} [2023-08-03 20:10:18,809 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2023-08-03 20:10:18,809 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 114 transitions, 347 flow [2023-08-03 20:10:18,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.6) internal successors, (983), 5 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:10:18,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:10:18,810 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:10:18,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 20:10:19,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:10:19,014 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:10:19,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:10:19,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1650984772, now seen corresponding path program 1 times [2023-08-03 20:10:19,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:10:19,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095117906] [2023-08-03 20:10:19,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:10:19,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:10:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:10:19,124 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 20:10:19,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:10:19,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095117906] [2023-08-03 20:10:19,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095117906] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:10:19,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137343740] [2023-08-03 20:10:19,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:10:19,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:10:19,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:10:19,142 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:10:19,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 20:10:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:10:19,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:10:19,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:10:19,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:10:19,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:10:19,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137343740] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:10:19,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:10:19,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 20:10:19,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921482489] [2023-08-03 20:10:19,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:10:19,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:10:19,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:10:19,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:10:19,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:10:19,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 395 [2023-08-03 20:10:19,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 114 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:10:19,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:10:19,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 395 [2023-08-03 20:10:19,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:10:48,880 INFO L124 PetriNetUnfolderBase]: 386199/464270 cut-off events. [2023-08-03 20:10:48,881 INFO L125 PetriNetUnfolderBase]: For 24398/24398 co-relation queries the response was YES. [2023-08-03 20:10:51,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936229 conditions, 464270 events. 386199/464270 cut-off events. For 24398/24398 co-relation queries the response was YES. Maximal size of possible extension queue 16696. Compared 2617117 event pairs, 137200 based on Foata normal form. 0/365347 useless extension candidates. Maximal degree in co-relation 225971. Up to 377918 conditions per place. [2023-08-03 20:10:53,446 INFO L140 encePairwiseOnDemand]: 392/395 looper letters, 109 selfloop transitions, 2 changer transitions 0/150 dead transitions. [2023-08-03 20:10:53,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 150 transitions, 655 flow [2023-08-03 20:10:53,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:10:53,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:10:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2023-08-03 20:10:53,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5848101265822785 [2023-08-03 20:10:53,448 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2023-08-03 20:10:53,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2023-08-03 20:10:53,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:10:53,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2023-08-03 20:10:53,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:10:53,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:10:53,451 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:10:53,451 INFO L175 Difference]: Start difference. First operand has 99 places, 114 transitions, 347 flow. Second operand 3 states and 693 transitions. [2023-08-03 20:10:53,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 150 transitions, 655 flow [2023-08-03 20:10:53,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 150 transitions, 648 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:10:53,467 INFO L231 Difference]: Finished difference. Result has 100 places, 115 transitions, 352 flow [2023-08-03 20:10:53,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=100, PETRI_TRANSITIONS=115} [2023-08-03 20:10:53,468 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 10 predicate places. [2023-08-03 20:10:53,468 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 115 transitions, 352 flow [2023-08-03 20:10:53,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:10:53,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:10:53,468 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:10:53,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 20:10:53,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:10:53,673 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:10:53,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:10:53,674 INFO L85 PathProgramCache]: Analyzing trace with hash -199085078, now seen corresponding path program 1 times [2023-08-03 20:10:53,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:10:53,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069488395] [2023-08-03 20:10:53,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:10:53,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:10:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:10:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:10:53,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:10:53,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069488395] [2023-08-03 20:10:53,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069488395] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:10:53,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463031859] [2023-08-03 20:10:53,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:10:53,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:10:53,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:10:53,742 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:10:53,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 20:10:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:10:53,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:10:53,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:10:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:10:53,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:10:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:10:53,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463031859] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:10:53,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:10:53,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:10:53,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480383065] [2023-08-03 20:10:53,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:10:53,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:10:53,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:10:53,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:10:53,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:10:53,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 395 [2023-08-03 20:10:53,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 115 transitions, 352 flow. Second operand has 5 states, 5 states have (on average 197.6) internal successors, (988), 5 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:10:53,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:10:53,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 395 [2023-08-03 20:10:53,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:11:22,524 INFO L124 PetriNetUnfolderBase]: 362423/434734 cut-off events. [2023-08-03 20:11:22,524 INFO L125 PetriNetUnfolderBase]: For 31074/31074 co-relation queries the response was YES. [2023-08-03 20:11:24,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891790 conditions, 434734 events. 362423/434734 cut-off events. For 31074/31074 co-relation queries the response was YES. Maximal size of possible extension queue 16537. Compared 2431049 event pairs, 119864 based on Foata normal form. 48/346019 useless extension candidates. Maximal degree in co-relation 212046. Up to 416430 conditions per place. [2023-08-03 20:11:26,888 INFO L140 encePairwiseOnDemand]: 392/395 looper letters, 109 selfloop transitions, 3 changer transitions 0/151 dead transitions. [2023-08-03 20:11:26,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 151 transitions, 644 flow [2023-08-03 20:11:26,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:11:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:11:26,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 886 transitions. [2023-08-03 20:11:26,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5607594936708861 [2023-08-03 20:11:26,891 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 886 transitions. [2023-08-03 20:11:26,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 886 transitions. [2023-08-03 20:11:26,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:11:26,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 886 transitions. [2023-08-03 20:11:26,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 221.5) internal successors, (886), 4 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:11:26,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:11:26,895 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:11:26,896 INFO L175 Difference]: Start difference. First operand has 100 places, 115 transitions, 352 flow. Second operand 4 states and 886 transitions. [2023-08-03 20:11:26,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 151 transitions, 644 flow [2023-08-03 20:11:27,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 151 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:11:27,700 INFO L231 Difference]: Finished difference. Result has 102 places, 114 transitions, 348 flow [2023-08-03 20:11:27,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=348, PETRI_PLACES=102, PETRI_TRANSITIONS=114} [2023-08-03 20:11:27,701 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 12 predicate places. [2023-08-03 20:11:27,701 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 114 transitions, 348 flow [2023-08-03 20:11:27,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.6) internal successors, (988), 5 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:11:27,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:11:27,702 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:11:27,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 20:11:27,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:11:27,905 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:11:27,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:11:27,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1636155598, now seen corresponding path program 1 times [2023-08-03 20:11:27,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:11:27,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831590134] [2023-08-03 20:11:27,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:11:27,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:11:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:11:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 20:11:27,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:11:27,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831590134] [2023-08-03 20:11:27,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831590134] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:11:27,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456227108] [2023-08-03 20:11:27,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:11:27,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:11:27,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:11:27,987 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:11:27,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 20:11:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:11:28,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:11:28,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:11:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 20:11:28,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:11:28,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456227108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:11:28,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:11:28,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:11:28,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22714160] [2023-08-03 20:11:28,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:11:28,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:11:28,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:11:28,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:11:28,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:11:28,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 395 [2023-08-03 20:11:28,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 114 transitions, 348 flow. Second operand has 5 states, 5 states have (on average 197.6) internal successors, (988), 5 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:11:28,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:11:28,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 395 [2023-08-03 20:11:28,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:11:54,780 INFO L124 PetriNetUnfolderBase]: 351623/421774 cut-off events. [2023-08-03 20:11:54,780 INFO L125 PetriNetUnfolderBase]: For 27606/27606 co-relation queries the response was YES. [2023-08-03 20:11:57,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862190 conditions, 421774 events. 351623/421774 cut-off events. For 27606/27606 co-relation queries the response was YES. Maximal size of possible extension queue 16195. Compared 2322326 event pairs, 27954 based on Foata normal form. 1296/338107 useless extension candidates. Maximal degree in co-relation 203782. Up to 379996 conditions per place. [2023-08-03 20:11:59,000 INFO L140 encePairwiseOnDemand]: 391/395 looper letters, 145 selfloop transitions, 4 changer transitions 0/187 dead transitions. [2023-08-03 20:11:59,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 187 transitions, 792 flow [2023-08-03 20:11:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:11:59,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:11:59,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1117 transitions. [2023-08-03 20:11:59,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5655696202531646 [2023-08-03 20:11:59,007 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1117 transitions. [2023-08-03 20:11:59,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1117 transitions. [2023-08-03 20:11:59,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:11:59,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1117 transitions. [2023-08-03 20:11:59,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 223.4) internal successors, (1117), 5 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:11:59,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 395.0) internal successors, (2370), 6 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:11:59,013 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 395.0) internal successors, (2370), 6 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:11:59,013 INFO L175 Difference]: Start difference. First operand has 102 places, 114 transitions, 348 flow. Second operand 5 states and 1117 transitions. [2023-08-03 20:11:59,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 187 transitions, 792 flow [2023-08-03 20:11:59,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 187 transitions, 778 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 20:11:59,339 INFO L231 Difference]: Finished difference. Result has 102 places, 114 transitions, 351 flow [2023-08-03 20:11:59,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=351, PETRI_PLACES=102, PETRI_TRANSITIONS=114} [2023-08-03 20:11:59,340 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 12 predicate places. [2023-08-03 20:11:59,340 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 114 transitions, 351 flow [2023-08-03 20:11:59,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.6) internal successors, (988), 5 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:11:59,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:11:59,340 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:11:59,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 20:11:59,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-03 20:11:59,541 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:11:59,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:11:59,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1272110697, now seen corresponding path program 1 times [2023-08-03 20:11:59,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:11:59,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130524057] [2023-08-03 20:11:59,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:11:59,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:11:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:11:59,628 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 20:11:59,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:11:59,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130524057] [2023-08-03 20:11:59,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130524057] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:11:59,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519709339] [2023-08-03 20:11:59,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:11:59,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:11:59,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:11:59,630 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:11:59,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 20:11:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:11:59,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:11:59,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:11:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:11:59,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:11:59,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519709339] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:11:59,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:11:59,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 20:11:59,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284644033] [2023-08-03 20:11:59,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:11:59,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:11:59,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:11:59,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:11:59,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:11:59,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 395 [2023-08-03 20:11:59,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 114 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:11:59,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:11:59,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 395 [2023-08-03 20:11:59,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:12:27,230 INFO L124 PetriNetUnfolderBase]: 319419/386118 cut-off events. [2023-08-03 20:12:27,230 INFO L125 PetriNetUnfolderBase]: For 33336/33336 co-relation queries the response was YES. [2023-08-03 20:12:29,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792771 conditions, 386118 events. 319419/386118 cut-off events. For 33336/33336 co-relation queries the response was YES. Maximal size of possible extension queue 14433. Compared 2179108 event pairs, 117954 based on Foata normal form. 0/311199 useless extension candidates. Maximal degree in co-relation 183365. Up to 280548 conditions per place. [2023-08-03 20:12:30,876 INFO L140 encePairwiseOnDemand]: 392/395 looper letters, 110 selfloop transitions, 2 changer transitions 0/150 dead transitions. [2023-08-03 20:12:30,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 150 transitions, 659 flow [2023-08-03 20:12:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:12:30,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:12:30,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2023-08-03 20:12:30,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5848101265822785 [2023-08-03 20:12:30,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2023-08-03 20:12:30,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2023-08-03 20:12:30,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:12:30,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2023-08-03 20:12:30,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:12:30,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:12:30,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:12:30,880 INFO L175 Difference]: Start difference. First operand has 102 places, 114 transitions, 351 flow. Second operand 3 states and 693 transitions. [2023-08-03 20:12:30,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 150 transitions, 659 flow [2023-08-03 20:12:31,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 150 transitions, 652 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:12:31,259 INFO L231 Difference]: Finished difference. Result has 103 places, 115 transitions, 356 flow [2023-08-03 20:12:31,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=103, PETRI_TRANSITIONS=115} [2023-08-03 20:12:31,260 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 13 predicate places. [2023-08-03 20:12:31,260 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 115 transitions, 356 flow [2023-08-03 20:12:31,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:12:31,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:12:31,261 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2023-08-03 20:12:31,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-03 20:12:31,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:12:31,461 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:12:31,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:12:31,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1953558929, now seen corresponding path program 1 times [2023-08-03 20:12:31,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:12:31,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120677393] [2023-08-03 20:12:31,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:12:31,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:12:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:12:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:12:31,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:12:31,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120677393] [2023-08-03 20:12:31,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120677393] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:12:31,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760934369] [2023-08-03 20:12:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:12:31,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:12:31,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:12:31,521 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:12:31,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 20:12:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:12:31,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:12:31,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:12:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 20:12:31,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:12:31,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760934369] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:12:31,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:12:31,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 20:12:31,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971835012] [2023-08-03 20:12:31,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:12:31,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:12:31,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:12:31,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:12:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:12:31,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 395 [2023-08-03 20:12:31,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 115 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:12:31,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:12:31,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 395 [2023-08-03 20:12:31,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:12:57,022 INFO L124 PetriNetUnfolderBase]: 316794/383896 cut-off events. [2023-08-03 20:12:57,022 INFO L125 PetriNetUnfolderBase]: For 37192/37192 co-relation queries the response was YES. [2023-08-03 20:12:59,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800861 conditions, 383896 events. 316794/383896 cut-off events. For 37192/37192 co-relation queries the response was YES. Maximal size of possible extension queue 13910. Compared 2181105 event pairs, 139199 based on Foata normal form. 0/314064 useless extension candidates. Maximal degree in co-relation 400055. Up to 329637 conditions per place. [2023-08-03 20:13:00,791 INFO L140 encePairwiseOnDemand]: 392/395 looper letters, 111 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2023-08-03 20:13:00,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 151 transitions, 666 flow [2023-08-03 20:13:00,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:13:00,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:13:00,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2023-08-03 20:13:00,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5848101265822785 [2023-08-03 20:13:00,794 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2023-08-03 20:13:00,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2023-08-03 20:13:00,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:13:00,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2023-08-03 20:13:00,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:13:00,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:13:00,798 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:13:00,798 INFO L175 Difference]: Start difference. First operand has 103 places, 115 transitions, 356 flow. Second operand 3 states and 693 transitions. [2023-08-03 20:13:00,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 151 transitions, 666 flow [2023-08-03 20:13:13,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 151 transitions, 664 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:13:13,327 INFO L231 Difference]: Finished difference. Result has 105 places, 116 transitions, 366 flow [2023-08-03 20:13:13,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=105, PETRI_TRANSITIONS=116} [2023-08-03 20:13:13,328 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 15 predicate places. [2023-08-03 20:13:13,328 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 116 transitions, 366 flow [2023-08-03 20:13:13,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:13:13,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:13:13,328 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2023-08-03 20:13:13,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 20:13:13,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-03 20:13:13,530 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:13:13,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:13:13,530 INFO L85 PathProgramCache]: Analyzing trace with hash -439960809, now seen corresponding path program 1 times [2023-08-03 20:13:13,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:13:13,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526908092] [2023-08-03 20:13:13,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:13:13,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:13:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:13:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 20:13:13,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:13:13,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526908092] [2023-08-03 20:13:13,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526908092] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:13:13,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163222629] [2023-08-03 20:13:13,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:13:13,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:13:13,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:13:13,585 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:13:13,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 20:13:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:13:13,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:13:13,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:13:13,712 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 20:13:13,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:13:13,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 20:13:13,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163222629] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:13:13,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:13:13,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:13:13,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459239433] [2023-08-03 20:13:13,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:13:13,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:13:13,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:13:13,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:13:13,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:13:13,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 395 [2023-08-03 20:13:13,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 116 transitions, 366 flow. Second operand has 5 states, 5 states have (on average 200.8) internal successors, (1004), 5 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:13:13,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:13:13,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 395 [2023-08-03 20:13:13,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:13:41,252 INFO L124 PetriNetUnfolderBase]: 306462/371404 cut-off events. [2023-08-03 20:13:41,253 INFO L125 PetriNetUnfolderBase]: For 31758/31758 co-relation queries the response was YES. [2023-08-03 20:13:43,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777130 conditions, 371404 events. 306462/371404 cut-off events. For 31758/31758 co-relation queries the response was YES. Maximal size of possible extension queue 14097. Compared 2149826 event pairs, 88975 based on Foata normal form. 432/305905 useless extension candidates. Maximal degree in co-relation 657490. Up to 333811 conditions per place. [2023-08-03 20:13:44,922 INFO L140 encePairwiseOnDemand]: 392/395 looper letters, 127 selfloop transitions, 3 changer transitions 0/168 dead transitions. [2023-08-03 20:13:44,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 168 transitions, 726 flow [2023-08-03 20:13:44,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:13:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:13:44,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 902 transitions. [2023-08-03 20:13:44,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5708860759493671 [2023-08-03 20:13:44,924 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 902 transitions. [2023-08-03 20:13:44,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 902 transitions. [2023-08-03 20:13:44,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:13:44,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 902 transitions. [2023-08-03 20:13:44,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 225.5) internal successors, (902), 4 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:13:44,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:13:44,928 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:13:44,928 INFO L175 Difference]: Start difference. First operand has 105 places, 116 transitions, 366 flow. Second operand 4 states and 902 transitions. [2023-08-03 20:13:44,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 168 transitions, 726 flow [2023-08-03 20:13:54,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 168 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:13:54,751 INFO L231 Difference]: Finished difference. Result has 107 places, 115 transitions, 362 flow [2023-08-03 20:13:54,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=362, PETRI_PLACES=107, PETRI_TRANSITIONS=115} [2023-08-03 20:13:54,751 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 17 predicate places. [2023-08-03 20:13:54,752 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 115 transitions, 362 flow [2023-08-03 20:13:54,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 200.8) internal successors, (1004), 5 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:13:54,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:13:54,752 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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] [2023-08-03 20:13:54,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 20:13:54,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 20:13:54,957 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:13:54,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:13:54,957 INFO L85 PathProgramCache]: Analyzing trace with hash -479249233, now seen corresponding path program 1 times [2023-08-03 20:13:54,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:13:54,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389509382] [2023-08-03 20:13:54,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:13:54,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:13:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:13:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 20:13:55,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:13:55,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389509382] [2023-08-03 20:13:55,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389509382] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:13:55,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075505120] [2023-08-03 20:13:55,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:13:55,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:13:55,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:13:55,017 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:13:55,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 20:13:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:13:55,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:13:55,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:13:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 20:13:55,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:13:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 20:13:55,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075505120] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:13:55,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:13:55,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:13:55,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215343617] [2023-08-03 20:13:55,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:13:55,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:13:55,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:13:55,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:13:55,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:13:55,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 395 [2023-08-03 20:13:55,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 115 transitions, 362 flow. Second operand has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:13:55,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:13:55,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 395 [2023-08-03 20:13:55,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:14:11,379 INFO L124 PetriNetUnfolderBase]: 201097/244977 cut-off events. [2023-08-03 20:14:11,380 INFO L125 PetriNetUnfolderBase]: For 28790/28790 co-relation queries the response was YES. [2023-08-03 20:14:12,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511790 conditions, 244977 events. 201097/244977 cut-off events. For 28790/28790 co-relation queries the response was YES. Maximal size of possible extension queue 8104. Compared 1342275 event pairs, 46778 based on Foata normal form. 2376/202866 useless extension candidates. Maximal degree in co-relation 484085. Up to 116579 conditions per place. [2023-08-03 20:14:13,753 INFO L140 encePairwiseOnDemand]: 391/395 looper letters, 137 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2023-08-03 20:14:13,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 179 transitions, 784 flow [2023-08-03 20:14:13,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:14:13,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:14:13,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 913 transitions. [2023-08-03 20:14:13,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5778481012658228 [2023-08-03 20:14:13,755 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 913 transitions. [2023-08-03 20:14:13,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 913 transitions. [2023-08-03 20:14:13,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:14:13,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 913 transitions. [2023-08-03 20:14:13,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 228.25) internal successors, (913), 4 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:14:13,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:14:13,760 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:14:13,760 INFO L175 Difference]: Start difference. First operand has 107 places, 115 transitions, 362 flow. Second operand 4 states and 913 transitions. [2023-08-03 20:14:13,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 179 transitions, 784 flow [2023-08-03 20:14:17,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 179 transitions, 778 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 20:14:17,058 INFO L231 Difference]: Finished difference. Result has 109 places, 116 transitions, 376 flow [2023-08-03 20:14:17,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=109, PETRI_TRANSITIONS=116} [2023-08-03 20:14:17,059 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 19 predicate places. [2023-08-03 20:14:17,059 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 116 transitions, 376 flow [2023-08-03 20:14:17,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:14:17,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:14:17,060 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 20:14:17,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 20:14:17,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 20:14:17,266 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:14:17,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:14:17,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2059551845, now seen corresponding path program 1 times [2023-08-03 20:14:17,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:14:17,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752800585] [2023-08-03 20:14:17,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:14:17,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:14:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:14:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 20:14:17,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:14:17,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752800585] [2023-08-03 20:14:17,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752800585] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:14:17,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145785022] [2023-08-03 20:14:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:14:17,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:14:17,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:14:17,378 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:14:17,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 20:14:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:14:17,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:14:17,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:14:17,494 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 20:14:17,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:14:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 20:14:17,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145785022] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:14:17,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:14:17,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:14:17,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808874092] [2023-08-03 20:14:17,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:14:17,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:14:17,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:14:17,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:14:17,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:14:17,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 395 [2023-08-03 20:14:17,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 116 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 201.4) internal successors, (1007), 5 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:14:17,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:14:17,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 395 [2023-08-03 20:14:17,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:14:33,332 INFO L124 PetriNetUnfolderBase]: 192979/234712 cut-off events. [2023-08-03 20:14:33,332 INFO L125 PetriNetUnfolderBase]: For 51630/51630 co-relation queries the response was YES. [2023-08-03 20:14:34,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509657 conditions, 234712 events. 192979/234712 cut-off events. For 51630/51630 co-relation queries the response was YES. Maximal size of possible extension queue 7969. Compared 1273411 event pairs, 76781 based on Foata normal form. 919/192340 useless extension candidates. Maximal degree in co-relation 505851. Up to 174327 conditions per place. [2023-08-03 20:14:35,486 INFO L140 encePairwiseOnDemand]: 391/395 looper letters, 138 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2023-08-03 20:14:35,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 180 transitions, 800 flow [2023-08-03 20:14:35,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:14:35,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:14:35,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 913 transitions. [2023-08-03 20:14:35,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5778481012658228 [2023-08-03 20:14:35,488 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 913 transitions. [2023-08-03 20:14:35,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 913 transitions. [2023-08-03 20:14:35,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:14:35,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 913 transitions. [2023-08-03 20:14:35,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 228.25) internal successors, (913), 4 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:14:35,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:14:35,491 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:14:35,491 INFO L175 Difference]: Start difference. First operand has 109 places, 116 transitions, 376 flow. Second operand 4 states and 913 transitions. [2023-08-03 20:14:35,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 180 transitions, 800 flow [2023-08-03 20:14:39,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 180 transitions, 796 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 20:14:39,414 INFO L231 Difference]: Finished difference. Result has 113 places, 117 transitions, 392 flow [2023-08-03 20:14:39,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=392, PETRI_PLACES=113, PETRI_TRANSITIONS=117} [2023-08-03 20:14:39,414 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 23 predicate places. [2023-08-03 20:14:39,414 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 117 transitions, 392 flow [2023-08-03 20:14:39,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.4) internal successors, (1007), 5 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:14:39,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:14:39,415 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 20:14:39,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-03 20:14:39,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 20:14:39,620 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:14:39,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:14:39,621 INFO L85 PathProgramCache]: Analyzing trace with hash 374616941, now seen corresponding path program 1 times [2023-08-03 20:14:39,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:14:39,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47614872] [2023-08-03 20:14:39,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:14:39,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:14:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:14:39,703 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 20:14:39,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:14:39,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47614872] [2023-08-03 20:14:39,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47614872] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:14:39,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465003167] [2023-08-03 20:14:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:14:39,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:14:39,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:14:39,705 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:14:39,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 20:14:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:14:39,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:14:39,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:14:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 20:14:39,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:14:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 20:14:39,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465003167] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:14:39,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:14:39,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 20:14:39,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503413109] [2023-08-03 20:14:39,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:14:39,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:14:39,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:14:39,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:14:39,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:14:39,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 395 [2023-08-03 20:14:39,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 117 transitions, 392 flow. Second operand has 5 states, 5 states have (on average 201.8) internal successors, (1009), 5 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:14:39,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:14:39,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 395 [2023-08-03 20:14:39,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:14:56,907 INFO L124 PetriNetUnfolderBase]: 192951/234665 cut-off events. [2023-08-03 20:14:56,908 INFO L125 PetriNetUnfolderBase]: For 50032/50032 co-relation queries the response was YES. [2023-08-03 20:14:58,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516478 conditions, 234665 events. 192951/234665 cut-off events. For 50032/50032 co-relation queries the response was YES. Maximal size of possible extension queue 7969. Compared 1271824 event pairs, 95635 based on Foata normal form. 21/191401 useless extension candidates. Maximal degree in co-relation 512597. Up to 222332 conditions per place. [2023-08-03 20:14:59,560 INFO L140 encePairwiseOnDemand]: 391/395 looper letters, 139 selfloop transitions, 3 changer transitions 1/181 dead transitions. [2023-08-03 20:14:59,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 181 transitions, 818 flow [2023-08-03 20:14:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:14:59,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:14:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 913 transitions. [2023-08-03 20:14:59,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5778481012658228 [2023-08-03 20:14:59,562 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 913 transitions. [2023-08-03 20:14:59,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 913 transitions. [2023-08-03 20:14:59,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:14:59,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 913 transitions. [2023-08-03 20:14:59,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 228.25) internal successors, (913), 4 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:14:59,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:14:59,565 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:14:59,565 INFO L175 Difference]: Start difference. First operand has 113 places, 117 transitions, 392 flow. Second operand 4 states and 913 transitions. [2023-08-03 20:14:59,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 181 transitions, 818 flow [2023-08-03 20:15:06,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 181 transitions, 814 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 20:15:06,661 INFO L231 Difference]: Finished difference. Result has 117 places, 117 transitions, 402 flow [2023-08-03 20:15:06,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=402, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2023-08-03 20:15:06,662 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 27 predicate places. [2023-08-03 20:15:06,662 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 402 flow [2023-08-03 20:15:06,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.8) internal successors, (1009), 5 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:15:06,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:15:06,662 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 20:15:06,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-03 20:15:06,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:15:06,863 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:15:06,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:15:06,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2127584916, now seen corresponding path program 1 times [2023-08-03 20:15:06,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:15:06,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805952304] [2023-08-03 20:15:06,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:15:06,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:15:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:15:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 20:15:06,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:15:06,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805952304] [2023-08-03 20:15:06,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805952304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:15:06,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:15:06,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 20:15:06,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627678466] [2023-08-03 20:15:06,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:15:06,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:15:06,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:15:06,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:15:06,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:15:06,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 395 [2023-08-03 20:15:06,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:15:06,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:15:06,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 395 [2023-08-03 20:15:06,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:15:31,603 INFO L124 PetriNetUnfolderBase]: 266380/329383 cut-off events. [2023-08-03 20:15:31,603 INFO L125 PetriNetUnfolderBase]: For 93871/93871 co-relation queries the response was YES. Received shutdown request... [2023-08-03 20:15:32,376 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 20:15:33,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-03 20:15:33,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710333 conditions, 329383 events. 266380/329383 cut-off events. For 93871/93871 co-relation queries the response was YES. Maximal size of possible extension queue 9921. Compared 1980436 event pairs, 42544 based on Foata normal form. 6939/271035 useless extension candidates. Maximal degree in co-relation 710026. Up to 230864 conditions per place. [2023-08-03 20:15:35,320 INFO L140 encePairwiseOnDemand]: 390/395 looper letters, 137 selfloop transitions, 3 changer transitions 1/179 dead transitions. [2023-08-03 20:15:35,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 179 transitions, 936 flow [2023-08-03 20:15:35,321 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 20:15:35,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-03 20:15:35,321 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-03 20:15:35,322 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 20:15:35,322 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 20:15:35,322 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 20:15:35,322 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:15:35,323 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 20:15:35,324 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 20:15:35,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 08:15:35 BasicIcfg [2023-08-03 20:15:35,326 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 20:15:35,326 INFO L158 Benchmark]: Toolchain (without parser) took 591271.41ms. Allocated memory was 507.5MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 458.7MB in the beginning and 10.5GB in the end (delta: -10.0GB). Peak memory consumption was 5.9GB. Max. memory is 16.0GB. [2023-08-03 20:15:35,327 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 360.7MB. Free memory is still 311.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 20:15:35,327 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.79ms. Allocated memory is still 507.5MB. Free memory was 458.7MB in the beginning and 446.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 20:15:35,327 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.01ms. Allocated memory is still 507.5MB. Free memory was 446.6MB in the beginning and 444.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 20:15:35,327 INFO L158 Benchmark]: Boogie Preprocessor took 35.06ms. Allocated memory is still 507.5MB. Free memory was 444.9MB in the beginning and 443.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 20:15:35,327 INFO L158 Benchmark]: RCFGBuilder took 544.85ms. Allocated memory is still 507.5MB. Free memory was 443.4MB in the beginning and 425.3MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 20:15:35,328 INFO L158 Benchmark]: TraceAbstraction took 590412.57ms. Allocated memory was 507.5MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 424.6MB in the beginning and 10.5GB in the end (delta: -10.1GB). Peak memory consumption was 5.9GB. Max. memory is 16.0GB. [2023-08-03 20:15:35,329 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 360.7MB. Free memory is still 311.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 241.79ms. Allocated memory is still 507.5MB. Free memory was 458.7MB in the beginning and 446.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.01ms. Allocated memory is still 507.5MB. Free memory was 446.6MB in the beginning and 444.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.06ms. Allocated memory is still 507.5MB. Free memory was 444.9MB in the beginning and 443.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 544.85ms. Allocated memory is still 507.5MB. Free memory was 443.4MB in the beginning and 425.3MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 590412.57ms. Allocated memory was 507.5MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 424.6MB in the beginning and 10.5GB in the end (delta: -10.1GB). Peak memory consumption was 5.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 151 PlacesBefore, 39 PlacesAfterwards, 175 TransitionsBefore, 44 TransitionsAfterwards, 10260 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 91 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 19 ChoiceCompositions, 158 TotalNumberOfCompositions, 13399 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12702, independent: 12686, independent conditional: 0, independent unconditional: 12686, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5353, independent: 5343, independent conditional: 0, independent unconditional: 5343, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12702, independent: 7343, independent conditional: 0, independent unconditional: 7343, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 5353, unknown conditional: 0, unknown unconditional: 5353] , Statistics on independence cache: Total cache size (in pairs): 126, Positive cache size: 126, Positive conditional cache size: 0, Positive unconditional cache size: 126, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 199 PlacesBefore, 90 PlacesAfterwards, 241 TransitionsBefore, 113 TransitionsAfterwards, 28620 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 85 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 25 ConcurrentYvCompositions, 19 ChoiceCompositions, 154 TotalNumberOfCompositions, 117155 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 75091, independent: 74404, independent conditional: 0, independent unconditional: 74404, dependent: 687, dependent conditional: 0, dependent unconditional: 687, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 15721, independent: 15597, independent conditional: 0, independent unconditional: 15597, dependent: 124, dependent conditional: 0, dependent unconditional: 124, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 75091, independent: 58807, independent conditional: 0, independent unconditional: 58807, dependent: 563, dependent conditional: 0, dependent unconditional: 563, unknown: 15721, unknown conditional: 0, unknown unconditional: 15721] , Statistics on independence cache: Total cache size (in pairs): 3281, Positive cache size: 3225, Positive conditional cache size: 0, Positive unconditional cache size: 3225, Negative cache size: 56, Negative conditional cache size: 0, Negative unconditional cache size: 56, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 187 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.6s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 229 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 585.7s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 575.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1167 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1044 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3487 IncrementalHoareTripleChecker+Invalid, 3545 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 7 mSDtfsCounter, 3487 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 689 GetRequests, 630 SyntacticMatches, 12 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=402occurred in iteration=15, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 896 NumberOfCodeBlocks, 896 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 1096 ConstructedInterpolants, 0 QuantifiedInterpolants, 1458 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2357 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 36 InterpolantComputations, 10 PerfectInterpolantSequences, 504/542 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown