/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 05:36:02,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 05:36:02,361 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 05:36:02,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 05:36:02,367 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 05:36:02,397 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 05:36:02,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 05:36:02,398 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 05:36:02,399 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 05:36:02,399 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 05:36:02,399 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 05:36:02,400 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 05:36:02,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 05:36:02,401 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 05:36:02,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 05:36:02,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 05:36:02,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 05:36:02,402 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 05:36:02,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 05:36:02,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 05:36:02,403 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 05:36:02,403 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 05:36:02,403 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 05:36:02,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 05:36:02,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 05:36:02,404 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 05:36:02,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 05:36:02,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:36:02,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 05:36:02,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 05:36:02,406 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 05:36:02,406 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 05:36:02,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 05:36:02,407 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 05:36:02,407 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 05:36:02,407 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 05:36:02,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 05:36:02,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 05:36:02,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 05:36:02,747 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 05:36:02,747 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 05:36:02,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 05:36:04,004 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 05:36:04,265 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 05:36:04,265 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 05:36:04,288 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20fbce542/a91d225fb55643dbb7118bababbda4a8/FLAG74df20232 [2023-08-24 05:36:04,306 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20fbce542/a91d225fb55643dbb7118bababbda4a8 [2023-08-24 05:36:04,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 05:36:04,312 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 05:36:04,313 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 05:36:04,313 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 05:36:04,316 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 05:36:04,317 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:36:04" (1/1) ... [2023-08-24 05:36:04,318 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151b0318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:04, skipping insertion in model container [2023-08-24 05:36:04,318 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:36:04" (1/1) ... [2023-08-24 05:36:04,366 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 05:36:04,532 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-24 05:36:04,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:36:04,695 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 05:36:04,713 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-24 05:36:04,722 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:36:04,724 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:36:04,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:36:04,776 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:36:04,776 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:36:04,782 INFO L206 MainTranslator]: Completed translation [2023-08-24 05:36:04,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:04 WrapperNode [2023-08-24 05:36:04,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 05:36:04,784 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 05:36:04,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 05:36:04,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 05:36:04,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:04" (1/1) ... [2023-08-24 05:36:04,801 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:04" (1/1) ... [2023-08-24 05:36:04,822 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2023-08-24 05:36:04,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 05:36:04,823 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 05:36:04,823 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 05:36:04,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 05:36:04,834 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:04" (1/1) ... [2023-08-24 05:36:04,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:04" (1/1) ... [2023-08-24 05:36:04,839 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:04" (1/1) ... [2023-08-24 05:36:04,839 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:04" (1/1) ... [2023-08-24 05:36:04,844 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:04" (1/1) ... [2023-08-24 05:36:04,845 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:04" (1/1) ... [2023-08-24 05:36:04,847 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:04" (1/1) ... [2023-08-24 05:36:04,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:04" (1/1) ... [2023-08-24 05:36:04,850 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 05:36:04,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 05:36:04,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 05:36:04,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 05:36:04,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:04" (1/1) ... [2023-08-24 05:36:04,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:36:04,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 05:36:04,881 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) [2023-08-24 05:36:04,884 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 [2023-08-24 05:36:04,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 05:36:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 05:36:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 05:36:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 05:36:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 05:36:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 05:36:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 05:36:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 05:36:04,913 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 05:36:04,913 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-24 05:36:04,913 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-24 05:36:04,913 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-24 05:36:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-24 05:36:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 05:36:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 05:36:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 05:36:04,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 05:36:04,917 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 05:36:05,040 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 05:36:05,041 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 05:36:05,265 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 05:36:05,271 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 05:36:05,272 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 05:36:05,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:36:05 BoogieIcfgContainer [2023-08-24 05:36:05,274 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 05:36:05,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 05:36:05,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 05:36:05,279 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 05:36:05,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 05:36:04" (1/3) ... [2023-08-24 05:36:05,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9fcb0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:36:05, skipping insertion in model container [2023-08-24 05:36:05,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:04" (2/3) ... [2023-08-24 05:36:05,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9fcb0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:36:05, skipping insertion in model container [2023-08-24 05:36:05,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:36:05" (3/3) ... [2023-08-24 05:36:05,281 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-24 05:36:05,299 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 05:36:05,300 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 05:36:05,300 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 05:36:05,377 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:36:05,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 99 transitions, 218 flow [2023-08-24 05:36:05,490 INFO L124 PetriNetUnfolderBase]: 2/95 cut-off events. [2023-08-24 05:36:05,491 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:36:05,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 2/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-08-24 05:36:05,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 99 transitions, 218 flow [2023-08-24 05:36:05,525 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 81 transitions, 174 flow [2023-08-24 05:36:05,528 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:36:05,541 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 81 transitions, 174 flow [2023-08-24 05:36:05,545 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 81 transitions, 174 flow [2023-08-24 05:36:05,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 81 transitions, 174 flow [2023-08-24 05:36:05,577 INFO L124 PetriNetUnfolderBase]: 1/81 cut-off events. [2023-08-24 05:36:05,577 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:36:05,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 1/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 44 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-08-24 05:36:05,580 INFO L119 LiptonReduction]: Number of co-enabled transitions 1542 [2023-08-24 05:36:07,605 INFO L134 LiptonReduction]: Checked pairs total: 2668 [2023-08-24 05:36:07,605 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-08-24 05:36:07,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 05:36:07,621 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@489399fb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:36:07,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-24 05:36:07,626 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:36:07,627 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-08-24 05:36:07,627 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:36:07,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:07,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:07,628 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 05:36:07,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:07,632 INFO L85 PathProgramCache]: Analyzing trace with hash -109062191, now seen corresponding path program 1 times [2023-08-24 05:36:07,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:07,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309944486] [2023-08-24 05:36:07,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:07,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:36:08,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:08,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309944486] [2023-08-24 05:36:08,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309944486] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:08,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:08,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 05:36:08,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349465137] [2023-08-24 05:36:08,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:08,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:36:08,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:08,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:36:08,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:36:08,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 165 [2023-08-24 05:36:08,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:08,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:08,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 165 [2023-08-24 05:36:08,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:08,424 INFO L124 PetriNetUnfolderBase]: 1747/2539 cut-off events. [2023-08-24 05:36:08,425 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-08-24 05:36:08,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5250 conditions, 2539 events. 1747/2539 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11322 event pairs, 696 based on Foata normal form. 75/2614 useless extension candidates. Maximal degree in co-relation 5238. Up to 1811 conditions per place. [2023-08-24 05:36:08,447 INFO L140 encePairwiseOnDemand]: 157/165 looper letters, 30 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2023-08-24 05:36:08,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 165 flow [2023-08-24 05:36:08,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:36:08,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:36:08,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2023-08-24 05:36:08,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2023-08-24 05:36:08,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2023-08-24 05:36:08,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2023-08-24 05:36:08,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:08,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2023-08-24 05:36:08,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:08,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:08,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:08,484 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 285 transitions. [2023-08-24 05:36:08,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 165 flow [2023-08-24 05:36:08,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 158 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 05:36:08,491 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 84 flow [2023-08-24 05:36:08,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-08-24 05:36:08,496 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2023-08-24 05:36:08,497 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 84 flow [2023-08-24 05:36:08,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:08,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:08,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:08,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 05:36:08,498 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 05:36:08,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:08,506 INFO L85 PathProgramCache]: Analyzing trace with hash 914038522, now seen corresponding path program 1 times [2023-08-24 05:36:08,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:08,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590118162] [2023-08-24 05:36:08,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:08,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:36:08,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:08,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590118162] [2023-08-24 05:36:08,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590118162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:08,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:08,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:36:08,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683236166] [2023-08-24 05:36:08,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:08,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:36:08,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:08,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:36:08,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:36:08,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 165 [2023-08-24 05:36:08,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:08,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:08,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 165 [2023-08-24 05:36:08,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:08,994 INFO L124 PetriNetUnfolderBase]: 1647/2406 cut-off events. [2023-08-24 05:36:08,994 INFO L125 PetriNetUnfolderBase]: For 401/401 co-relation queries the response was YES. [2023-08-24 05:36:09,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6105 conditions, 2406 events. 1647/2406 cut-off events. For 401/401 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10611 event pairs, 249 based on Foata normal form. 33/2439 useless extension candidates. Maximal degree in co-relation 6094. Up to 1391 conditions per place. [2023-08-24 05:36:09,012 INFO L140 encePairwiseOnDemand]: 158/165 looper letters, 37 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2023-08-24 05:36:09,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 228 flow [2023-08-24 05:36:09,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:36:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:36:09,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2023-08-24 05:36:09,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2023-08-24 05:36:09,015 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 370 transitions. [2023-08-24 05:36:09,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 370 transitions. [2023-08-24 05:36:09,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:09,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 370 transitions. [2023-08-24 05:36:09,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:09,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:09,021 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:09,021 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 84 flow. Second operand 4 states and 370 transitions. [2023-08-24 05:36:09,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 228 flow [2023-08-24 05:36:09,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:36:09,034 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 113 flow [2023-08-24 05:36:09,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-08-24 05:36:09,037 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-08-24 05:36:09,038 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 113 flow [2023-08-24 05:36:09,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:09,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:09,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:09,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 05:36:09,042 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 05:36:09,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:09,045 INFO L85 PathProgramCache]: Analyzing trace with hash 914038677, now seen corresponding path program 1 times [2023-08-24 05:36:09,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:09,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535956911] [2023-08-24 05:36:09,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:09,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:36:09,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:09,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535956911] [2023-08-24 05:36:09,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535956911] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:09,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:09,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:36:09,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381818410] [2023-08-24 05:36:09,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:09,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:36:09,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:09,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:36:09,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:36:09,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 165 [2023-08-24 05:36:09,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:09,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:09,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 165 [2023-08-24 05:36:09,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:09,402 INFO L124 PetriNetUnfolderBase]: 1560/2283 cut-off events. [2023-08-24 05:36:09,402 INFO L125 PetriNetUnfolderBase]: For 1297/1297 co-relation queries the response was YES. [2023-08-24 05:36:09,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6306 conditions, 2283 events. 1560/2283 cut-off events. For 1297/1297 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9750 event pairs, 231 based on Foata normal form. 12/2295 useless extension candidates. Maximal degree in co-relation 6292. Up to 1302 conditions per place. [2023-08-24 05:36:09,418 INFO L140 encePairwiseOnDemand]: 159/165 looper letters, 37 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2023-08-24 05:36:09,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 261 flow [2023-08-24 05:36:09,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:36:09,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:36:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2023-08-24 05:36:09,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5621212121212121 [2023-08-24 05:36:09,420 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2023-08-24 05:36:09,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2023-08-24 05:36:09,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:09,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2023-08-24 05:36:09,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:09,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:09,423 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:09,424 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 113 flow. Second operand 4 states and 371 transitions. [2023-08-24 05:36:09,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 261 flow [2023-08-24 05:36:09,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 05:36:09,431 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 137 flow [2023-08-24 05:36:09,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-08-24 05:36:09,433 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2023-08-24 05:36:09,436 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 137 flow [2023-08-24 05:36:09,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:09,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:09,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:09,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 05:36:09,437 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 05:36:09,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:09,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1822099019, now seen corresponding path program 1 times [2023-08-24 05:36:09,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:09,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41154989] [2023-08-24 05:36:09,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:09,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:09,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:36:09,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:09,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41154989] [2023-08-24 05:36:09,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41154989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:09,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:09,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:36:09,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263422545] [2023-08-24 05:36:09,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:09,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:36:09,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:09,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:36:09,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:36:09,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 165 [2023-08-24 05:36:09,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:09,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:09,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 165 [2023-08-24 05:36:09,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:09,782 INFO L124 PetriNetUnfolderBase]: 1489/2182 cut-off events. [2023-08-24 05:36:09,782 INFO L125 PetriNetUnfolderBase]: For 1532/1532 co-relation queries the response was YES. [2023-08-24 05:36:09,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6291 conditions, 2182 events. 1489/2182 cut-off events. For 1532/1532 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9388 event pairs, 394 based on Foata normal form. 18/2200 useless extension candidates. Maximal degree in co-relation 6276. Up to 1369 conditions per place. [2023-08-24 05:36:09,797 INFO L140 encePairwiseOnDemand]: 159/165 looper letters, 44 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2023-08-24 05:36:09,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 324 flow [2023-08-24 05:36:09,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:36:09,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:36:09,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2023-08-24 05:36:09,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5651515151515152 [2023-08-24 05:36:09,799 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2023-08-24 05:36:09,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2023-08-24 05:36:09,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:09,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2023-08-24 05:36:09,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:09,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:09,802 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:09,802 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 137 flow. Second operand 4 states and 373 transitions. [2023-08-24 05:36:09,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 324 flow [2023-08-24 05:36:09,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:36:09,808 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 194 flow [2023-08-24 05:36:09,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2023-08-24 05:36:09,809 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-08-24 05:36:09,809 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 194 flow [2023-08-24 05:36:09,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:09,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:09,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:09,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 05:36:09,810 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 05:36:09,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:09,810 INFO L85 PathProgramCache]: Analyzing trace with hash -2077298808, now seen corresponding path program 1 times [2023-08-24 05:36:09,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:09,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482363319] [2023-08-24 05:36:09,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:09,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:09,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:36:09,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:09,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482363319] [2023-08-24 05:36:09,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482363319] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:09,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:09,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:36:09,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369032756] [2023-08-24 05:36:09,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:09,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:36:09,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:09,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:36:09,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:36:09,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 165 [2023-08-24 05:36:09,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:09,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:09,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 165 [2023-08-24 05:36:09,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:10,158 INFO L124 PetriNetUnfolderBase]: 1703/2579 cut-off events. [2023-08-24 05:36:10,158 INFO L125 PetriNetUnfolderBase]: For 4771/4919 co-relation queries the response was YES. [2023-08-24 05:36:10,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8125 conditions, 2579 events. 1703/2579 cut-off events. For 4771/4919 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 13342 event pairs, 293 based on Foata normal form. 160/2721 useless extension candidates. Maximal degree in co-relation 8105. Up to 1080 conditions per place. [2023-08-24 05:36:10,171 INFO L140 encePairwiseOnDemand]: 161/165 looper letters, 44 selfloop transitions, 4 changer transitions 14/66 dead transitions. [2023-08-24 05:36:10,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 66 transitions, 517 flow [2023-08-24 05:36:10,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:36:10,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:36:10,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 387 transitions. [2023-08-24 05:36:10,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5863636363636363 [2023-08-24 05:36:10,173 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 387 transitions. [2023-08-24 05:36:10,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 387 transitions. [2023-08-24 05:36:10,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:10,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 387 transitions. [2023-08-24 05:36:10,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:10,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:10,176 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:10,176 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 194 flow. Second operand 4 states and 387 transitions. [2023-08-24 05:36:10,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 66 transitions, 517 flow [2023-08-24 05:36:10,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:36:10,186 INFO L231 Difference]: Finished difference. Result has 47 places, 31 transitions, 207 flow [2023-08-24 05:36:10,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=47, PETRI_TRANSITIONS=31} [2023-08-24 05:36:10,187 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2023-08-24 05:36:10,187 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 31 transitions, 207 flow [2023-08-24 05:36:10,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:10,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:10,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:10,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 05:36:10,188 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 05:36:10,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:10,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1224884116, now seen corresponding path program 1 times [2023-08-24 05:36:10,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:10,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545127261] [2023-08-24 05:36:10,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:10,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:36:10,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:10,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545127261] [2023-08-24 05:36:10,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545127261] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:10,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:10,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:36:10,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275499444] [2023-08-24 05:36:10,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:10,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 05:36:10,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:10,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 05:36:10,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 05:36:10,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 165 [2023-08-24 05:36:10,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 31 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:10,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:10,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 165 [2023-08-24 05:36:10,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:10,548 INFO L124 PetriNetUnfolderBase]: 1333/2026 cut-off events. [2023-08-24 05:36:10,548 INFO L125 PetriNetUnfolderBase]: For 3709/3709 co-relation queries the response was YES. [2023-08-24 05:36:10,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6541 conditions, 2026 events. 1333/2026 cut-off events. For 3709/3709 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8937 event pairs, 321 based on Foata normal form. 44/2070 useless extension candidates. Maximal degree in co-relation 6518. Up to 888 conditions per place. [2023-08-24 05:36:10,560 INFO L140 encePairwiseOnDemand]: 159/165 looper letters, 38 selfloop transitions, 8 changer transitions 12/58 dead transitions. [2023-08-24 05:36:10,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 58 transitions, 432 flow [2023-08-24 05:36:10,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:36:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:36:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 460 transitions. [2023-08-24 05:36:10,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2023-08-24 05:36:10,562 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 460 transitions. [2023-08-24 05:36:10,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 460 transitions. [2023-08-24 05:36:10,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:10,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 460 transitions. [2023-08-24 05:36:10,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:10,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:10,566 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:10,566 INFO L175 Difference]: Start difference. First operand has 47 places, 31 transitions, 207 flow. Second operand 5 states and 460 transitions. [2023-08-24 05:36:10,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 58 transitions, 432 flow [2023-08-24 05:36:10,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 408 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-24 05:36:10,578 INFO L231 Difference]: Finished difference. Result has 48 places, 28 transitions, 184 flow [2023-08-24 05:36:10,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=48, PETRI_TRANSITIONS=28} [2023-08-24 05:36:10,579 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2023-08-24 05:36:10,579 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 28 transitions, 184 flow [2023-08-24 05:36:10,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:10,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:10,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:10,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 05:36:10,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 05:36:10,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:10,581 INFO L85 PathProgramCache]: Analyzing trace with hash -388138933, now seen corresponding path program 1 times [2023-08-24 05:36:10,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:10,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729578514] [2023-08-24 05:36:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:10,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:36:10,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:10,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729578514] [2023-08-24 05:36:10,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729578514] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:10,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:10,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:36:10,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413634792] [2023-08-24 05:36:10,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:10,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:36:10,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:10,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:36:10,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:36:10,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 165 [2023-08-24 05:36:10,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 28 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:10,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:10,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 165 [2023-08-24 05:36:10,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:10,820 INFO L124 PetriNetUnfolderBase]: 770/1195 cut-off events. [2023-08-24 05:36:10,821 INFO L125 PetriNetUnfolderBase]: For 2091/2091 co-relation queries the response was YES. [2023-08-24 05:36:10,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3738 conditions, 1195 events. 770/1195 cut-off events. For 2091/2091 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5003 event pairs, 134 based on Foata normal form. 36/1231 useless extension candidates. Maximal degree in co-relation 3716. Up to 600 conditions per place. [2023-08-24 05:36:10,832 INFO L140 encePairwiseOnDemand]: 160/165 looper letters, 33 selfloop transitions, 7 changer transitions 1/41 dead transitions. [2023-08-24 05:36:10,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 299 flow [2023-08-24 05:36:10,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:36:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:36:10,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2023-08-24 05:36:10,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5545454545454546 [2023-08-24 05:36:10,834 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 366 transitions. [2023-08-24 05:36:10,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 366 transitions. [2023-08-24 05:36:10,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:10,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 366 transitions. [2023-08-24 05:36:10,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:10,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:10,837 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:10,837 INFO L175 Difference]: Start difference. First operand has 48 places, 28 transitions, 184 flow. Second operand 4 states and 366 transitions. [2023-08-24 05:36:10,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 299 flow [2023-08-24 05:36:10,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 264 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-24 05:36:10,844 INFO L231 Difference]: Finished difference. Result has 45 places, 27 transitions, 161 flow [2023-08-24 05:36:10,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=45, PETRI_TRANSITIONS=27} [2023-08-24 05:36:10,845 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2023-08-24 05:36:10,845 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 27 transitions, 161 flow [2023-08-24 05:36:10,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:10,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:10,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:10,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 05:36:10,846 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 05:36:10,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:10,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1394447200, now seen corresponding path program 2 times [2023-08-24 05:36:10,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:10,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144815775] [2023-08-24 05:36:10,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:10,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:36:11,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:11,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144815775] [2023-08-24 05:36:11,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144815775] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:11,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:11,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:36:11,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637188032] [2023-08-24 05:36:11,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:11,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:36:11,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:11,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:36:11,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:36:11,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 165 [2023-08-24 05:36:11,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 27 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:11,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 165 [2023-08-24 05:36:11,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:11,126 INFO L124 PetriNetUnfolderBase]: 609/1007 cut-off events. [2023-08-24 05:36:11,126 INFO L125 PetriNetUnfolderBase]: For 2055/2077 co-relation queries the response was YES. [2023-08-24 05:36:11,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2944 conditions, 1007 events. 609/1007 cut-off events. For 2055/2077 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5041 event pairs, 183 based on Foata normal form. 52/996 useless extension candidates. Maximal degree in co-relation 2925. Up to 672 conditions per place. [2023-08-24 05:36:11,131 INFO L140 encePairwiseOnDemand]: 158/165 looper letters, 35 selfloop transitions, 5 changer transitions 27/71 dead transitions. [2023-08-24 05:36:11,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 540 flow [2023-08-24 05:36:11,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:36:11,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:36:11,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 469 transitions. [2023-08-24 05:36:11,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5684848484848485 [2023-08-24 05:36:11,133 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 469 transitions. [2023-08-24 05:36:11,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 469 transitions. [2023-08-24 05:36:11,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:11,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 469 transitions. [2023-08-24 05:36:11,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,136 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,136 INFO L175 Difference]: Start difference. First operand has 45 places, 27 transitions, 161 flow. Second operand 5 states and 469 transitions. [2023-08-24 05:36:11,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 540 flow [2023-08-24 05:36:11,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 463 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-24 05:36:11,139 INFO L231 Difference]: Finished difference. Result has 48 places, 31 transitions, 177 flow [2023-08-24 05:36:11,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=48, PETRI_TRANSITIONS=31} [2023-08-24 05:36:11,140 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2023-08-24 05:36:11,140 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 31 transitions, 177 flow [2023-08-24 05:36:11,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:11,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:11,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 05:36:11,141 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 05:36:11,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:11,141 INFO L85 PathProgramCache]: Analyzing trace with hash 821537320, now seen corresponding path program 1 times [2023-08-24 05:36:11,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:11,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679041182] [2023-08-24 05:36:11,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:11,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:36:11,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:11,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679041182] [2023-08-24 05:36:11,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679041182] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:11,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:11,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:36:11,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134759829] [2023-08-24 05:36:11,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:11,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 05:36:11,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:11,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 05:36:11,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 05:36:11,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 165 [2023-08-24 05:36:11,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 31 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:11,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 165 [2023-08-24 05:36:11,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:11,376 INFO L124 PetriNetUnfolderBase]: 444/765 cut-off events. [2023-08-24 05:36:11,376 INFO L125 PetriNetUnfolderBase]: For 2014/2193 co-relation queries the response was YES. [2023-08-24 05:36:11,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 765 events. 444/765 cut-off events. For 2014/2193 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3737 event pairs, 53 based on Foata normal form. 63/788 useless extension candidates. Maximal degree in co-relation 3076. Up to 524 conditions per place. [2023-08-24 05:36:11,381 INFO L140 encePairwiseOnDemand]: 158/165 looper letters, 43 selfloop transitions, 9 changer transitions 24/80 dead transitions. [2023-08-24 05:36:11,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 80 transitions, 595 flow [2023-08-24 05:36:11,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 05:36:11,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 05:36:11,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 563 transitions. [2023-08-24 05:36:11,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5686868686868687 [2023-08-24 05:36:11,383 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 563 transitions. [2023-08-24 05:36:11,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 563 transitions. [2023-08-24 05:36:11,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:11,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 563 transitions. [2023-08-24 05:36:11,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,386 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,387 INFO L175 Difference]: Start difference. First operand has 48 places, 31 transitions, 177 flow. Second operand 6 states and 563 transitions. [2023-08-24 05:36:11,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 80 transitions, 595 flow [2023-08-24 05:36:11,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 80 transitions, 578 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-24 05:36:11,390 INFO L231 Difference]: Finished difference. Result has 51 places, 35 transitions, 236 flow [2023-08-24 05:36:11,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=51, PETRI_TRANSITIONS=35} [2023-08-24 05:36:11,391 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2023-08-24 05:36:11,391 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 35 transitions, 236 flow [2023-08-24 05:36:11,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:11,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:11,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 05:36:11,392 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 05:36:11,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:11,392 INFO L85 PathProgramCache]: Analyzing trace with hash -302162279, now seen corresponding path program 1 times [2023-08-24 05:36:11,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:11,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189025080] [2023-08-24 05:36:11,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:11,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:11,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:36:11,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:11,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189025080] [2023-08-24 05:36:11,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189025080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:11,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:11,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 05:36:11,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127114327] [2023-08-24 05:36:11,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:11,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 05:36:11,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:11,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 05:36:11,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-24 05:36:11,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 165 [2023-08-24 05:36:11,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 35 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:11,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 165 [2023-08-24 05:36:11,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:11,671 INFO L124 PetriNetUnfolderBase]: 279/510 cut-off events. [2023-08-24 05:36:11,672 INFO L125 PetriNetUnfolderBase]: For 1669/1917 co-relation queries the response was YES. [2023-08-24 05:36:11,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2555 conditions, 510 events. 279/510 cut-off events. For 1669/1917 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2325 event pairs, 16 based on Foata normal form. 74/560 useless extension candidates. Maximal degree in co-relation 2533. Up to 341 conditions per place. [2023-08-24 05:36:11,675 INFO L140 encePairwiseOnDemand]: 158/165 looper letters, 48 selfloop transitions, 13 changer transitions 18/83 dead transitions. [2023-08-24 05:36:11,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 83 transitions, 697 flow [2023-08-24 05:36:11,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 05:36:11,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 05:36:11,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 655 transitions. [2023-08-24 05:36:11,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5670995670995671 [2023-08-24 05:36:11,677 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 655 transitions. [2023-08-24 05:36:11,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 655 transitions. [2023-08-24 05:36:11,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:11,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 655 transitions. [2023-08-24 05:36:11,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.57142857142857) internal successors, (655), 7 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,681 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,682 INFO L175 Difference]: Start difference. First operand has 51 places, 35 transitions, 236 flow. Second operand 7 states and 655 transitions. [2023-08-24 05:36:11,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 83 transitions, 697 flow [2023-08-24 05:36:11,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 83 transitions, 635 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-08-24 05:36:11,688 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 286 flow [2023-08-24 05:36:11,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=286, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2023-08-24 05:36:11,688 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2023-08-24 05:36:11,688 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 286 flow [2023-08-24 05:36:11,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:11,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:11,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 05:36:11,689 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 05:36:11,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:11,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1641088262, now seen corresponding path program 1 times [2023-08-24 05:36:11,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:11,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727303573] [2023-08-24 05:36:11,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:11,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:36:11,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:11,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727303573] [2023-08-24 05:36:11,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727303573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:11,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:11,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 05:36:11,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809368872] [2023-08-24 05:36:11,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:11,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 05:36:11,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:11,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 05:36:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 05:36:11,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 165 [2023-08-24 05:36:11,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:11,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 165 [2023-08-24 05:36:11,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:11,914 INFO L124 PetriNetUnfolderBase]: 312/556 cut-off events. [2023-08-24 05:36:11,914 INFO L125 PetriNetUnfolderBase]: For 1784/1784 co-relation queries the response was YES. [2023-08-24 05:36:11,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2659 conditions, 556 events. 312/556 cut-off events. For 1784/1784 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2215 event pairs, 38 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 2636. Up to 264 conditions per place. [2023-08-24 05:36:11,917 INFO L140 encePairwiseOnDemand]: 159/165 looper letters, 41 selfloop transitions, 6 changer transitions 46/93 dead transitions. [2023-08-24 05:36:11,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 93 transitions, 915 flow [2023-08-24 05:36:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 05:36:11,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 05:36:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 543 transitions. [2023-08-24 05:36:11,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484848484848485 [2023-08-24 05:36:11,919 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 543 transitions. [2023-08-24 05:36:11,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 543 transitions. [2023-08-24 05:36:11,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:11,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 543 transitions. [2023-08-24 05:36:11,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.5) internal successors, (543), 6 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,923 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,923 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 286 flow. Second operand 6 states and 543 transitions. [2023-08-24 05:36:11,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 93 transitions, 915 flow [2023-08-24 05:36:11,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 93 transitions, 733 flow, removed 59 selfloop flow, removed 5 redundant places. [2023-08-24 05:36:11,930 INFO L231 Difference]: Finished difference. Result has 53 places, 36 transitions, 228 flow [2023-08-24 05:36:11,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=53, PETRI_TRANSITIONS=36} [2023-08-24 05:36:11,931 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2023-08-24 05:36:11,931 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 36 transitions, 228 flow [2023-08-24 05:36:11,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:11,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:11,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:11,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 05:36:11,932 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 05:36:11,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:11,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1665961714, now seen corresponding path program 1 times [2023-08-24 05:36:11,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:11,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278364285] [2023-08-24 05:36:11,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:11,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:12,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:36:12,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:12,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278364285] [2023-08-24 05:36:12,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278364285] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:12,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:12,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 05:36:12,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192754733] [2023-08-24 05:36:12,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:12,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 05:36:12,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:12,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 05:36:12,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 05:36:12,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 165 [2023-08-24 05:36:12,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 36 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:12,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:12,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 165 [2023-08-24 05:36:12,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:12,165 INFO L124 PetriNetUnfolderBase]: 127/252 cut-off events. [2023-08-24 05:36:12,165 INFO L125 PetriNetUnfolderBase]: For 607/728 co-relation queries the response was YES. [2023-08-24 05:36:12,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 252 events. 127/252 cut-off events. For 607/728 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 955 event pairs, 8 based on Foata normal form. 49/291 useless extension candidates. Maximal degree in co-relation 1012. Up to 88 conditions per place. [2023-08-24 05:36:12,169 INFO L140 encePairwiseOnDemand]: 158/165 looper letters, 25 selfloop transitions, 17 changer transitions 18/62 dead transitions. [2023-08-24 05:36:12,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 504 flow [2023-08-24 05:36:12,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 05:36:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 05:36:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 727 transitions. [2023-08-24 05:36:12,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507575757575758 [2023-08-24 05:36:12,172 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 727 transitions. [2023-08-24 05:36:12,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 727 transitions. [2023-08-24 05:36:12,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:12,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 727 transitions. [2023-08-24 05:36:12,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.875) internal successors, (727), 8 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:12,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:12,176 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:12,176 INFO L175 Difference]: Start difference. First operand has 53 places, 36 transitions, 228 flow. Second operand 8 states and 727 transitions. [2023-08-24 05:36:12,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 504 flow [2023-08-24 05:36:12,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 454 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-08-24 05:36:12,180 INFO L231 Difference]: Finished difference. Result has 55 places, 32 transitions, 222 flow [2023-08-24 05:36:12,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=222, PETRI_PLACES=55, PETRI_TRANSITIONS=32} [2023-08-24 05:36:12,181 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2023-08-24 05:36:12,181 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 32 transitions, 222 flow [2023-08-24 05:36:12,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:12,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:12,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:12,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 05:36:12,182 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 05:36:12,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:12,182 INFO L85 PathProgramCache]: Analyzing trace with hash -51575620, now seen corresponding path program 1 times [2023-08-24 05:36:12,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:12,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168075128] [2023-08-24 05:36:12,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:12,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:36:12,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:12,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168075128] [2023-08-24 05:36:12,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168075128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:12,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:12,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:36:12,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735384611] [2023-08-24 05:36:12,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:12,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:36:12,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:12,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:36:12,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:36:12,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 165 [2023-08-24 05:36:12,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 32 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:12,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:12,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 165 [2023-08-24 05:36:12,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:12,371 INFO L124 PetriNetUnfolderBase]: 73/142 cut-off events. [2023-08-24 05:36:12,371 INFO L125 PetriNetUnfolderBase]: For 327/327 co-relation queries the response was YES. [2023-08-24 05:36:12,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 142 events. 73/142 cut-off events. For 327/327 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 336 event pairs, 10 based on Foata normal form. 1/143 useless extension candidates. Maximal degree in co-relation 602. Up to 85 conditions per place. [2023-08-24 05:36:12,372 INFO L140 encePairwiseOnDemand]: 158/165 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2023-08-24 05:36:12,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 46 transitions, 387 flow [2023-08-24 05:36:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:36:12,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:36:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 429 transitions. [2023-08-24 05:36:12,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-08-24 05:36:12,374 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 429 transitions. [2023-08-24 05:36:12,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 429 transitions. [2023-08-24 05:36:12,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:12,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 429 transitions. [2023-08-24 05:36:12,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:12,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:12,377 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:12,377 INFO L175 Difference]: Start difference. First operand has 55 places, 32 transitions, 222 flow. Second operand 5 states and 429 transitions. [2023-08-24 05:36:12,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 46 transitions, 387 flow [2023-08-24 05:36:12,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 310 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-08-24 05:36:12,380 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-08-24 05:36:12,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-08-24 05:36:12,381 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2023-08-24 05:36:12,381 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-08-24 05:36:12,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:12,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-24 05:36:12,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-24 05:36:12,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-24 05:36:12,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-24 05:36:12,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-24 05:36:12,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 05:36:12,386 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:12,389 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 05:36:12,389 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 05:36:12,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 05:36:12 BasicIcfg [2023-08-24 05:36:12,392 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 05:36:12,393 INFO L158 Benchmark]: Toolchain (without parser) took 8080.95ms. Allocated memory was 373.3MB in the beginning and 587.2MB in the end (delta: 213.9MB). Free memory was 347.8MB in the beginning and 333.1MB in the end (delta: 14.7MB). Peak memory consumption was 229.3MB. Max. memory is 16.0GB. [2023-08-24 05:36:12,393 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 373.3MB. Free memory was 349.5MB in the beginning and 349.5MB in the end (delta: 77.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 05:36:12,393 INFO L158 Benchmark]: CACSL2BoogieTranslator took 470.00ms. Allocated memory is still 373.3MB. Free memory was 347.8MB in the beginning and 327.2MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-24 05:36:12,394 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.08ms. Allocated memory is still 373.3MB. Free memory was 327.2MB in the beginning and 325.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:36:12,394 INFO L158 Benchmark]: Boogie Preprocessor took 27.15ms. Allocated memory is still 373.3MB. Free memory was 325.1MB in the beginning and 323.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 05:36:12,394 INFO L158 Benchmark]: RCFGBuilder took 423.10ms. Allocated memory is still 373.3MB. Free memory was 323.7MB in the beginning and 309.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 05:36:12,394 INFO L158 Benchmark]: TraceAbstraction took 7116.62ms. Allocated memory was 373.3MB in the beginning and 587.2MB in the end (delta: 213.9MB). Free memory was 308.3MB in the beginning and 333.1MB in the end (delta: -24.8MB). Peak memory consumption was 189.5MB. Max. memory is 16.0GB. [2023-08-24 05:36:12,396 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 373.3MB. Free memory was 349.5MB in the beginning and 349.5MB in the end (delta: 77.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 470.00ms. Allocated memory is still 373.3MB. Free memory was 347.8MB in the beginning and 327.2MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.08ms. Allocated memory is still 373.3MB. Free memory was 327.2MB in the beginning and 325.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.15ms. Allocated memory is still 373.3MB. Free memory was 325.1MB in the beginning and 323.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 423.10ms. Allocated memory is still 373.3MB. Free memory was 323.7MB in the beginning and 309.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 7116.62ms. Allocated memory was 373.3MB in the beginning and 587.2MB in the end (delta: 213.9MB). Free memory was 308.3MB in the beginning and 333.1MB in the end (delta: -24.8MB). Peak memory consumption was 189.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 93 PlacesBefore, 33 PlacesAfterwards, 81 TransitionsBefore, 21 TransitionsAfterwards, 1542 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 66 TotalNumberOfCompositions, 2668 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1418, independent: 1332, independent conditional: 0, independent unconditional: 1332, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 811, independent: 785, independent conditional: 0, independent unconditional: 785, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1418, independent: 547, independent conditional: 0, independent unconditional: 547, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 811, unknown conditional: 0, unknown unconditional: 811] , Statistics on independence cache: Total cache size (in pairs): 54, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 128 locations, 5 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: 7.0s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 289 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 289 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 817 IncrementalHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 17 mSDtfsCounter, 817 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=286occurred in iteration=10, InterpolantAutomatonStates: 65, 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, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 783 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 05:36:12,424 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 Received shutdown request...