/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-3.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 20:06:14,285 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 20:06:14,357 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 20:06:14,362 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 20:06:14,362 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 20:06:14,363 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 20:06:14,363 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 20:06:14,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 20:06:14,390 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 20:06:14,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 20:06:14,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 20:06:14,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 20:06:14,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 20:06:14,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 20:06:14,397 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 20:06:14,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 20:06:14,397 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 20:06:14,398 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 20:06:14,398 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 20:06:14,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 20:06:14,398 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 20:06:14,399 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 20:06:14,399 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 20:06:14,399 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 20:06:14,399 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 20:06:14,400 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 20:06:14,400 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 20:06:14,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 20:06:14,401 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 20:06:14,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 20:06:14,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:06:14,402 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 20:06:14,402 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 20:06:14,402 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 20:06:14,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 20:06:14,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 20:06:14,403 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 20:06:14,403 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 20:06:14,403 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 20:06:14,403 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 20:06:14,403 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 20:06:14,404 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 20:06:14,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 20:06:14,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 20:06:14,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 20:06:14,688 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 20:06:14,688 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 20:06:14,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-3.wvr_bound2.c [2023-08-03 20:06:15,854 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 20:06:16,042 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 20:06:16,043 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-3.wvr_bound2.c [2023-08-03 20:06:16,049 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a87be89d/19255b17ca244fb9aefa6ac566427f37/FLAG4adc59231 [2023-08-03 20:06:16,061 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a87be89d/19255b17ca244fb9aefa6ac566427f37 [2023-08-03 20:06:16,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 20:06:16,065 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 20:06:16,066 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 20:06:16,066 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 20:06:16,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 20:06:16,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:06:16" (1/1) ... [2023-08-03 20:06:16,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16d15768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:16, skipping insertion in model container [2023-08-03 20:06:16,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:06:16" (1/1) ... [2023-08-03 20:06:16,095 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 20:06:16,228 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-3.wvr_bound2.c[2572,2585] [2023-08-03 20:06:16,229 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:06:16,237 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 20:06:16,256 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-3.wvr_bound2.c[2572,2585] [2023-08-03 20:06:16,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:06:16,263 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:06:16,264 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:06:16,269 INFO L206 MainTranslator]: Completed translation [2023-08-03 20:06:16,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:16 WrapperNode [2023-08-03 20:06:16,270 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 20:06:16,271 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 20:06:16,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 20:06:16,271 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 20:06:16,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:16" (1/1) ... [2023-08-03 20:06:16,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:16" (1/1) ... [2023-08-03 20:06:16,298 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2023-08-03 20:06:16,298 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 20:06:16,299 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 20:06:16,299 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 20:06:16,299 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 20:06:16,306 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:16" (1/1) ... [2023-08-03 20:06:16,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:16" (1/1) ... [2023-08-03 20:06:16,308 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:16" (1/1) ... [2023-08-03 20:06:16,309 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:16" (1/1) ... [2023-08-03 20:06:16,314 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:16" (1/1) ... [2023-08-03 20:06:16,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:16" (1/1) ... [2023-08-03 20:06:16,319 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:16" (1/1) ... [2023-08-03 20:06:16,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:16" (1/1) ... [2023-08-03 20:06:16,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 20:06:16,323 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 20:06:16,323 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 20:06:16,323 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 20:06:16,323 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:16" (1/1) ... [2023-08-03 20:06:16,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:06:16,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:06:16,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 20:06:16,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 20:06:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 20:06:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 20:06:16,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 20:06:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 20:06:16,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 20:06:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 20:06:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 20:06:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 20:06:16,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 20:06:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 20:06:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 20:06:16,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 20:06:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 20:06:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 20:06:16,380 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 20:06:16,453 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 20:06:16,455 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 20:06:16,717 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 20:06:16,747 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 20:06:16,747 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-03 20:06:16,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:06:16 BoogieIcfgContainer [2023-08-03 20:06:16,749 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 20:06:16,751 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 20:06:16,751 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 20:06:16,755 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 20:06:16,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 08:06:16" (1/3) ... [2023-08-03 20:06:16,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21dc2c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:06:16, skipping insertion in model container [2023-08-03 20:06:16,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:16" (2/3) ... [2023-08-03 20:06:16,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21dc2c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:06:16, skipping insertion in model container [2023-08-03 20:06:16,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:06:16" (3/3) ... [2023-08-03 20:06:16,758 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_parallel-misc-3.wvr_bound2.c [2023-08-03 20:06:16,763 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 20:06:16,769 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 20:06:16,769 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 20:06:16,769 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 20:06:16,818 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 20:06:16,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 122 transitions, 266 flow [2023-08-03 20:06:16,967 INFO L124 PetriNetUnfolderBase]: 41/270 cut-off events. [2023-08-03 20:06:16,967 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 20:06:16,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 270 events. 41/270 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 951 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 139. Up to 8 conditions per place. [2023-08-03 20:06:16,979 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 122 transitions, 266 flow [2023-08-03 20:06:16,986 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 122 transitions, 266 flow [2023-08-03 20:06:16,989 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:06:17,007 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 122 transitions, 266 flow [2023-08-03 20:06:17,011 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 122 transitions, 266 flow [2023-08-03 20:06:17,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 122 transitions, 266 flow [2023-08-03 20:06:17,067 INFO L124 PetriNetUnfolderBase]: 41/270 cut-off events. [2023-08-03 20:06:17,067 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 20:06:17,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 270 events. 41/270 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 951 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 139. Up to 8 conditions per place. [2023-08-03 20:06:17,073 INFO L119 LiptonReduction]: Number of co-enabled transitions 4608 [2023-08-03 20:06:19,926 INFO L134 LiptonReduction]: Checked pairs total: 4475 [2023-08-03 20:06:19,926 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-08-03 20:06:19,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:06:19,943 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@387050f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:06:19,944 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 20:06:19,947 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:06:19,947 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2023-08-03 20:06:19,947 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:06:19,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:19,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 20:06:19,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:06:19,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:19,952 INFO L85 PathProgramCache]: Analyzing trace with hash 483006427, now seen corresponding path program 1 times [2023-08-03 20:06:19,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:19,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805401350] [2023-08-03 20:06:19,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:19,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:06:20,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:20,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805401350] [2023-08-03 20:06:20,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805401350] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:06:20,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:06:20,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 20:06:20,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025366512] [2023-08-03 20:06:20,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:06:20,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:06:20,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:06:20,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:06:20,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:06:20,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 233 [2023-08-03 20:06:20,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 28 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:20,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:06:20,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 233 [2023-08-03 20:06:20,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:06:20,213 INFO L124 PetriNetUnfolderBase]: 108/203 cut-off events. [2023-08-03 20:06:20,214 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-03 20:06:20,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 203 events. 108/203 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 588 event pairs, 21 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 308. Up to 183 conditions per place. [2023-08-03 20:06:20,216 INFO L140 encePairwiseOnDemand]: 229/233 looper letters, 24 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-08-03 20:06:20,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 30 transitions, 134 flow [2023-08-03 20:06:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:06:20,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:06:20,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 334 transitions. [2023-08-03 20:06:20,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47782546494992845 [2023-08-03 20:06:20,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 334 transitions. [2023-08-03 20:06:20,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 334 transitions. [2023-08-03 20:06:20,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:06:20,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 334 transitions. [2023-08-03 20:06:20,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:20,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:20,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:20,243 INFO L175 Difference]: Start difference. First operand has 27 places, 28 transitions, 78 flow. Second operand 3 states and 334 transitions. [2023-08-03 20:06:20,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 30 transitions, 134 flow [2023-08-03 20:06:20,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:06:20,247 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 84 flow [2023-08-03 20:06:20,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-08-03 20:06:20,252 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-08-03 20:06:20,253 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 84 flow [2023-08-03 20:06:20,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:20,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:20,253 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 20:06:20,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 20:06:20,254 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:06:20,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:20,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2110498640, now seen corresponding path program 1 times [2023-08-03 20:06:20,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:20,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690916369] [2023-08-03 20:06:20,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:20,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:06:20,274 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 20:06:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:06:20,300 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 20:06:20,300 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 20:06:20,301 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 20:06:20,303 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 20:06:20,303 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 20:06:20,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 20:06:20,303 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 20:06:20,306 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 20:06:20,306 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 20:06:20,326 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 20:06:20,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 164 transitions, 376 flow [2023-08-03 20:06:20,420 INFO L124 PetriNetUnfolderBase]: 157/885 cut-off events. [2023-08-03 20:06:20,420 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 20:06:20,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 885 events. 157/885 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4602 event pairs, 1 based on Foata normal form. 0/725 useless extension candidates. Maximal degree in co-relation 522. Up to 32 conditions per place. [2023-08-03 20:06:20,429 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 164 transitions, 376 flow [2023-08-03 20:06:20,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 164 transitions, 376 flow [2023-08-03 20:06:20,435 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:06:20,435 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 164 transitions, 376 flow [2023-08-03 20:06:20,436 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 164 transitions, 376 flow [2023-08-03 20:06:20,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 164 transitions, 376 flow [2023-08-03 20:06:20,522 INFO L124 PetriNetUnfolderBase]: 157/885 cut-off events. [2023-08-03 20:06:20,522 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 20:06:20,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 885 events. 157/885 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4602 event pairs, 1 based on Foata normal form. 0/725 useless extension candidates. Maximal degree in co-relation 522. Up to 32 conditions per place. [2023-08-03 20:06:20,555 INFO L119 LiptonReduction]: Number of co-enabled transitions 12528 [2023-08-03 20:06:22,472 INFO L134 LiptonReduction]: Checked pairs total: 39620 [2023-08-03 20:06:22,472 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-08-03 20:06:22,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:06:22,491 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@387050f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:06:22,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 20:06:22,495 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:06:22,495 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-08-03 20:06:22,495 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:06:22,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:22,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 20:06:22,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:06:22,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:22,500 INFO L85 PathProgramCache]: Analyzing trace with hash 783820326, now seen corresponding path program 1 times [2023-08-03 20:06:22,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:22,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692288606] [2023-08-03 20:06:22,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:22,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:22,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:06:22,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:22,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692288606] [2023-08-03 20:06:22,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692288606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:06:22,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:06:22,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 20:06:22,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419766773] [2023-08-03 20:06:22,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:06:22,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:06:22,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:06:22,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:06:22,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:06:22,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 275 [2023-08-03 20:06:22,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 72 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:22,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:06:22,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 275 [2023-08-03 20:06:22,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:06:24,114 INFO L124 PetriNetUnfolderBase]: 15063/19492 cut-off events. [2023-08-03 20:06:24,114 INFO L125 PetriNetUnfolderBase]: For 1228/1228 co-relation queries the response was YES. [2023-08-03 20:06:24,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39037 conditions, 19492 events. 15063/19492 cut-off events. For 1228/1228 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 100699 event pairs, 5055 based on Foata normal form. 0/14933 useless extension candidates. Maximal degree in co-relation 9742. Up to 18313 conditions per place. [2023-08-03 20:06:24,316 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 51 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-03 20:06:24,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 312 flow [2023-08-03 20:06:24,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:06:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:06:24,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-08-03 20:06:24,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553939393939394 [2023-08-03 20:06:24,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-08-03 20:06:24,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-08-03 20:06:24,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:06:24,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-08-03 20:06:24,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:24,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:24,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:24,329 INFO L175 Difference]: Start difference. First operand has 61 places, 72 transitions, 192 flow. Second operand 3 states and 457 transitions. [2023-08-03 20:06:24,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 312 flow [2023-08-03 20:06:24,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:06:24,336 INFO L231 Difference]: Finished difference. Result has 63 places, 72 transitions, 202 flow [2023-08-03 20:06:24,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=63, PETRI_TRANSITIONS=72} [2023-08-03 20:06:24,337 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2023-08-03 20:06:24,338 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 72 transitions, 202 flow [2023-08-03 20:06:24,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:24,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:24,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:06:24,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 20:06:24,339 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:06:24,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:24,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1017961509, now seen corresponding path program 1 times [2023-08-03 20:06:24,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:24,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462992340] [2023-08-03 20:06:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:24,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:06:24,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:24,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462992340] [2023-08-03 20:06:24,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462992340] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:06:24,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812705994] [2023-08-03 20:06:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:24,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:24,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:06:24,441 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:06:24,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 20:06:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:24,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:06:24,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:06:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 20:06:24,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:06:24,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812705994] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:06:24,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:06:24,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 20:06:24,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119501113] [2023-08-03 20:06:24,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:06:24,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:06:24,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:06:24,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:06:24,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:06:24,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 275 [2023-08-03 20:06:24,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 72 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:24,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:06:24,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 275 [2023-08-03 20:06:24,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:06:25,927 INFO L124 PetriNetUnfolderBase]: 15047/19530 cut-off events. [2023-08-03 20:06:25,928 INFO L125 PetriNetUnfolderBase]: For 1131/1131 co-relation queries the response was YES. [2023-08-03 20:06:25,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39102 conditions, 19530 events. 15047/19530 cut-off events. For 1131/1131 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 102530 event pairs, 5353 based on Foata normal form. 0/15031 useless extension candidates. Maximal degree in co-relation 22289. Up to 17892 conditions per place. [2023-08-03 20:06:26,061 INFO L140 encePairwiseOnDemand]: 272/275 looper letters, 62 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-08-03 20:06:26,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 90 transitions, 366 flow [2023-08-03 20:06:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:06:26,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:06:26,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2023-08-03 20:06:26,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5648484848484848 [2023-08-03 20:06:26,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2023-08-03 20:06:26,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2023-08-03 20:06:26,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:06:26,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2023-08-03 20:06:26,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:26,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:26,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:26,067 INFO L175 Difference]: Start difference. First operand has 63 places, 72 transitions, 202 flow. Second operand 3 states and 466 transitions. [2023-08-03 20:06:26,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 90 transitions, 366 flow [2023-08-03 20:06:26,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 90 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:06:26,071 INFO L231 Difference]: Finished difference. Result has 65 places, 73 transitions, 212 flow [2023-08-03 20:06:26,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=65, PETRI_TRANSITIONS=73} [2023-08-03 20:06:26,072 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2023-08-03 20:06:26,072 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 212 flow [2023-08-03 20:06:26,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:26,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:26,073 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 20:06:26,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 20:06:26,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:26,278 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:06:26,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:26,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1495652104, now seen corresponding path program 1 times [2023-08-03 20:06:26,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:26,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639287899] [2023-08-03 20:06:26,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:26,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:06:26,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:26,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639287899] [2023-08-03 20:06:26,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639287899] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:06:26,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815776338] [2023-08-03 20:06:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:26,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:26,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:06:26,385 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:06:26,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 20:06:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:26,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:06:26,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:06:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:06:26,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:06:26,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815776338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:06:26,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:06:26,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 20:06:26,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250161919] [2023-08-03 20:06:26,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:06:26,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:06:26,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:06:26,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:06:26,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:06:26,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 275 [2023-08-03 20:06:26,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 73 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:26,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:06:26,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 275 [2023-08-03 20:06:26,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:06:27,958 INFO L124 PetriNetUnfolderBase]: 14991/19446 cut-off events. [2023-08-03 20:06:27,958 INFO L125 PetriNetUnfolderBase]: For 1494/1494 co-relation queries the response was YES. [2023-08-03 20:06:28,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39487 conditions, 19446 events. 14991/19446 cut-off events. For 1494/1494 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 101295 event pairs, 4396 based on Foata normal form. 16/15231 useless extension candidates. Maximal degree in co-relation 9863. Up to 18156 conditions per place. [2023-08-03 20:06:28,090 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 63 selfloop transitions, 4 changer transitions 0/92 dead transitions. [2023-08-03 20:06:28,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 92 transitions, 385 flow [2023-08-03 20:06:28,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:06:28,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:06:28,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 732 transitions. [2023-08-03 20:06:28,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5323636363636364 [2023-08-03 20:06:28,092 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 732 transitions. [2023-08-03 20:06:28,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 732 transitions. [2023-08-03 20:06:28,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:06:28,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 732 transitions. [2023-08-03 20:06:28,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:28,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:28,097 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:28,097 INFO L175 Difference]: Start difference. First operand has 65 places, 73 transitions, 212 flow. Second operand 5 states and 732 transitions. [2023-08-03 20:06:28,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 92 transitions, 385 flow [2023-08-03 20:06:28,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 92 transitions, 376 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 20:06:28,101 INFO L231 Difference]: Finished difference. Result has 67 places, 73 transitions, 221 flow [2023-08-03 20:06:28,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=67, PETRI_TRANSITIONS=73} [2023-08-03 20:06:28,102 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2023-08-03 20:06:28,102 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 73 transitions, 221 flow [2023-08-03 20:06:28,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:28,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:28,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:06:28,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 20:06:28,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:28,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:06:28,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:28,309 INFO L85 PathProgramCache]: Analyzing trace with hash 891856886, now seen corresponding path program 1 times [2023-08-03 20:06:28,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:28,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432542392] [2023-08-03 20:06:28,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:28,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 20:06:28,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:28,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432542392] [2023-08-03 20:06:28,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432542392] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:06:28,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165190074] [2023-08-03 20:06:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:28,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:28,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:06:28,344 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:06:28,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 20:06:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:28,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:06:28,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:06:28,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 20:06:28,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:06:28,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165190074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:06:28,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:06:28,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 20:06:28,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388736424] [2023-08-03 20:06:28,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:06:28,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:06:28,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:06:28,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:06:28,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:06:28,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 275 [2023-08-03 20:06:28,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 73 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:28,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:06:28,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 275 [2023-08-03 20:06:28,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:06:29,393 INFO L124 PetriNetUnfolderBase]: 12619/16634 cut-off events. [2023-08-03 20:06:29,393 INFO L125 PetriNetUnfolderBase]: For 1277/1277 co-relation queries the response was YES. [2023-08-03 20:06:29,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33734 conditions, 16634 events. 12619/16634 cut-off events. For 1277/1277 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 88023 event pairs, 4027 based on Foata normal form. 0/13276 useless extension candidates. Maximal degree in co-relation 7804. Up to 11474 conditions per place. [2023-08-03 20:06:29,490 INFO L140 encePairwiseOnDemand]: 272/275 looper letters, 72 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-03 20:06:29,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 99 transitions, 431 flow [2023-08-03 20:06:29,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:06:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:06:29,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2023-08-03 20:06:29,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745454545454546 [2023-08-03 20:06:29,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2023-08-03 20:06:29,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2023-08-03 20:06:29,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:06:29,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2023-08-03 20:06:29,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:29,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:29,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:29,496 INFO L175 Difference]: Start difference. First operand has 67 places, 73 transitions, 221 flow. Second operand 3 states and 474 transitions. [2023-08-03 20:06:29,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 99 transitions, 431 flow [2023-08-03 20:06:29,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 99 transitions, 424 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:06:29,501 INFO L231 Difference]: Finished difference. Result has 68 places, 74 transitions, 226 flow [2023-08-03 20:06:29,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=68, PETRI_TRANSITIONS=74} [2023-08-03 20:06:29,504 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 7 predicate places. [2023-08-03 20:06:29,504 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 74 transitions, 226 flow [2023-08-03 20:06:29,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:29,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:29,505 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:06:29,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 20:06:29,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:29,709 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:06:29,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:29,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1798844984, now seen corresponding path program 1 times [2023-08-03 20:06:29,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:29,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382865682] [2023-08-03 20:06:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:29,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:29,764 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:06:29,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:29,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382865682] [2023-08-03 20:06:29,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382865682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:06:29,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349964504] [2023-08-03 20:06:29,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:29,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:29,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:06:29,769 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:06:29,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 20:06:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:29,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:06:29,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:06:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:06:29,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:06:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:06:29,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349964504] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:06:29,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:06:29,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 20:06:29,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347999510] [2023-08-03 20:06:29,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:06:29,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:06:29,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:06:29,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:06:29,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:06:29,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 275 [2023-08-03 20:06:29,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:29,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:06:29,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 275 [2023-08-03 20:06:29,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:06:30,868 INFO L124 PetriNetUnfolderBase]: 11595/15186 cut-off events. [2023-08-03 20:06:30,868 INFO L125 PetriNetUnfolderBase]: For 1780/1780 co-relation queries the response was YES. [2023-08-03 20:06:30,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31694 conditions, 15186 events. 11595/15186 cut-off events. For 1780/1780 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 78119 event pairs, 2396 based on Foata normal form. 4/12297 useless extension candidates. Maximal degree in co-relation 8819. Up to 14153 conditions per place. [2023-08-03 20:06:30,944 INFO L140 encePairwiseOnDemand]: 272/275 looper letters, 64 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2023-08-03 20:06:30,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 392 flow [2023-08-03 20:06:30,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:06:30,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:06:30,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 598 transitions. [2023-08-03 20:06:30,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5436363636363636 [2023-08-03 20:06:30,948 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 598 transitions. [2023-08-03 20:06:30,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 598 transitions. [2023-08-03 20:06:30,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:06:30,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 598 transitions. [2023-08-03 20:06:30,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:30,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:30,952 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:30,953 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 226 flow. Second operand 4 states and 598 transitions. [2023-08-03 20:06:30,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 392 flow [2023-08-03 20:06:30,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 92 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:06:30,975 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 222 flow [2023-08-03 20:06:30,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2023-08-03 20:06:30,977 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 9 predicate places. [2023-08-03 20:06:30,977 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 222 flow [2023-08-03 20:06:30,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:30,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:30,978 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:06:30,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 20:06:31,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:31,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:06:31,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:31,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1253782782, now seen corresponding path program 1 times [2023-08-03 20:06:31,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:31,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953217993] [2023-08-03 20:06:31,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:31,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 20:06:31,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:31,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953217993] [2023-08-03 20:06:31,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953217993] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:06:31,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054856420] [2023-08-03 20:06:31,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:31,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:31,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:06:31,258 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:06:31,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 20:06:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:31,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:06:31,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:06:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 20:06:31,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:06:31,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054856420] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:06:31,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:06:31,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:06:31,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379816016] [2023-08-03 20:06:31,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:06:31,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:06:31,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:06:31,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:06:31,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:06:31,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 275 [2023-08-03 20:06:31,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:31,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:06:31,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 275 [2023-08-03 20:06:31,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:06:32,171 INFO L124 PetriNetUnfolderBase]: 10779/14130 cut-off events. [2023-08-03 20:06:32,171 INFO L125 PetriNetUnfolderBase]: For 1438/1438 co-relation queries the response was YES. [2023-08-03 20:06:32,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29299 conditions, 14130 events. 10779/14130 cut-off events. For 1438/1438 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 71749 event pairs, 1078 based on Foata normal form. 144/11701 useless extension candidates. Maximal degree in co-relation 7485. Up to 11400 conditions per place. [2023-08-03 20:06:32,236 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 94 selfloop transitions, 4 changer transitions 0/122 dead transitions. [2023-08-03 20:06:32,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 122 transitions, 516 flow [2023-08-03 20:06:32,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:06:32,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:06:32,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 762 transitions. [2023-08-03 20:06:32,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5541818181818182 [2023-08-03 20:06:32,239 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 762 transitions. [2023-08-03 20:06:32,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 762 transitions. [2023-08-03 20:06:32,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:06:32,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 762 transitions. [2023-08-03 20:06:32,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 152.4) internal successors, (762), 5 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:32,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:32,243 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:32,243 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 222 flow. Second operand 5 states and 762 transitions. [2023-08-03 20:06:32,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 122 transitions, 516 flow [2023-08-03 20:06:32,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 122 transitions, 504 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 20:06:32,253 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 227 flow [2023-08-03 20:06:32,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2023-08-03 20:06:32,254 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 9 predicate places. [2023-08-03 20:06:32,254 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 227 flow [2023-08-03 20:06:32,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:32,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:32,254 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:06:32,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 20:06:32,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:32,459 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:06:32,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:32,459 INFO L85 PathProgramCache]: Analyzing trace with hash 192373985, now seen corresponding path program 1 times [2023-08-03 20:06:32,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:32,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584670807] [2023-08-03 20:06:32,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:32,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:32,498 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 20:06:32,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:32,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584670807] [2023-08-03 20:06:32,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584670807] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:06:32,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11496318] [2023-08-03 20:06:32,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:32,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:32,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:06:32,501 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:06:32,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 20:06:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:32,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:06:32,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:06:32,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:06:32,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:06:32,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11496318] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:06:32,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:06:32,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 20:06:32,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627846092] [2023-08-03 20:06:32,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:06:32,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:06:32,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:06:32,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:06:32,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:06:32,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 275 [2023-08-03 20:06:32,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:32,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:06:32,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 275 [2023-08-03 20:06:32,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:06:33,274 INFO L124 PetriNetUnfolderBase]: 10497/13886 cut-off events. [2023-08-03 20:06:33,274 INFO L125 PetriNetUnfolderBase]: For 2425/2425 co-relation queries the response was YES. [2023-08-03 20:06:33,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29255 conditions, 13886 events. 10497/13886 cut-off events. For 2425/2425 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 72021 event pairs, 4032 based on Foata normal form. 0/11419 useless extension candidates. Maximal degree in co-relation 7383. Up to 10195 conditions per place. [2023-08-03 20:06:33,351 INFO L140 encePairwiseOnDemand]: 272/275 looper letters, 73 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-03 20:06:33,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 99 transitions, 437 flow [2023-08-03 20:06:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:06:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:06:33,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2023-08-03 20:06:33,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745454545454546 [2023-08-03 20:06:33,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2023-08-03 20:06:33,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2023-08-03 20:06:33,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:06:33,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2023-08-03 20:06:33,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:33,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:33,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:33,357 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 227 flow. Second operand 3 states and 474 transitions. [2023-08-03 20:06:33,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 99 transitions, 437 flow [2023-08-03 20:06:33,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 99 transitions, 430 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:06:33,367 INFO L231 Difference]: Finished difference. Result has 71 places, 74 transitions, 232 flow [2023-08-03 20:06:33,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=71, PETRI_TRANSITIONS=74} [2023-08-03 20:06:33,368 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2023-08-03 20:06:33,368 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 74 transitions, 232 flow [2023-08-03 20:06:33,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:33,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:33,368 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:06:33,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 20:06:33,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:33,573 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:06:33,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:33,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1835603526, now seen corresponding path program 1 times [2023-08-03 20:06:33,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:33,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997021700] [2023-08-03 20:06:33,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:33,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:06:33,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:33,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997021700] [2023-08-03 20:06:33,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997021700] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:06:33,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757654376] [2023-08-03 20:06:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:33,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:33,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:06:33,623 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:06:33,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 20:06:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:33,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:06:33,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:06:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:06:33,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:06:33,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:06:33,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757654376] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:06:33,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:06:33,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:06:33,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075478937] [2023-08-03 20:06:33,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:06:33,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:06:33,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:06:33,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:06:33,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:06:33,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 275 [2023-08-03 20:06:33,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 74 transitions, 232 flow. Second operand has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:33,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:06:33,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 275 [2023-08-03 20:06:33,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:06:34,550 INFO L124 PetriNetUnfolderBase]: 9925/13138 cut-off events. [2023-08-03 20:06:34,550 INFO L125 PetriNetUnfolderBase]: For 2020/2020 co-relation queries the response was YES. [2023-08-03 20:06:34,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27915 conditions, 13138 events. 9925/13138 cut-off events. For 2020/2020 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 67414 event pairs, 2804 based on Foata normal form. 48/11005 useless extension candidates. Maximal degree in co-relation 19191. Up to 10579 conditions per place. [2023-08-03 20:06:34,630 INFO L140 encePairwiseOnDemand]: 272/275 looper letters, 83 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-08-03 20:06:34,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 110 transitions, 472 flow [2023-08-03 20:06:34,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:06:34,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:06:34,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 616 transitions. [2023-08-03 20:06:34,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2023-08-03 20:06:34,632 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 616 transitions. [2023-08-03 20:06:34,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 616 transitions. [2023-08-03 20:06:34,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:06:34,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 616 transitions. [2023-08-03 20:06:34,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:34,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:34,636 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:34,636 INFO L175 Difference]: Start difference. First operand has 71 places, 74 transitions, 232 flow. Second operand 4 states and 616 transitions. [2023-08-03 20:06:34,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 110 transitions, 472 flow [2023-08-03 20:06:34,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 110 transitions, 470 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:06:34,685 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 228 flow [2023-08-03 20:06:34,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2023-08-03 20:06:34,686 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 12 predicate places. [2023-08-03 20:06:34,686 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 228 flow [2023-08-03 20:06:34,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:34,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:34,687 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:06:34,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-03 20:06:34,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:34,892 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:06:34,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:34,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1636905076, now seen corresponding path program 1 times [2023-08-03 20:06:34,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:34,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964043815] [2023-08-03 20:06:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:34,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 20:06:34,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:34,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964043815] [2023-08-03 20:06:34,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964043815] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:06:34,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156502531] [2023-08-03 20:06:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:34,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:34,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:06:34,941 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:06:34,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 20:06:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:35,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:06:35,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:06:35,034 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 20:06:35,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:06:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 20:06:35,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156502531] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:06:35,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:06:35,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:06:35,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657512464] [2023-08-03 20:06:35,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:06:35,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:06:35,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:06:35,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:06:35,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:06:35,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 275 [2023-08-03 20:06:35,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:35,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:06:35,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 275 [2023-08-03 20:06:35,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:06:35,683 INFO L124 PetriNetUnfolderBase]: 7526/10010 cut-off events. [2023-08-03 20:06:35,683 INFO L125 PetriNetUnfolderBase]: For 2183/2183 co-relation queries the response was YES. [2023-08-03 20:06:35,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21276 conditions, 10010 events. 7526/10010 cut-off events. For 2183/2183 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 48951 event pairs, 1537 based on Foata normal form. 168/8445 useless extension candidates. Maximal degree in co-relation 19399. Up to 3958 conditions per place. [2023-08-03 20:06:35,739 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 91 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2023-08-03 20:06:35,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 119 transitions, 518 flow [2023-08-03 20:06:35,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:06:35,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:06:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 625 transitions. [2023-08-03 20:06:35,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2023-08-03 20:06:35,741 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 625 transitions. [2023-08-03 20:06:35,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 625 transitions. [2023-08-03 20:06:35,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:06:35,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 625 transitions. [2023-08-03 20:06:35,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.25) internal successors, (625), 4 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:35,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:35,745 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:35,745 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 228 flow. Second operand 4 states and 625 transitions. [2023-08-03 20:06:35,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 119 transitions, 518 flow [2023-08-03 20:06:35,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 119 transitions, 512 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 20:06:35,762 INFO L231 Difference]: Finished difference. Result has 75 places, 74 transitions, 242 flow [2023-08-03 20:06:35,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=75, PETRI_TRANSITIONS=74} [2023-08-03 20:06:35,763 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 14 predicate places. [2023-08-03 20:06:35,763 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 74 transitions, 242 flow [2023-08-03 20:06:35,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:35,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:35,764 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:06:35,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 20:06:35,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-03 20:06:35,968 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:06:35,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:35,968 INFO L85 PathProgramCache]: Analyzing trace with hash 734875777, now seen corresponding path program 1 times [2023-08-03 20:06:35,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:35,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196036064] [2023-08-03 20:06:35,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:35,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 20:06:36,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:36,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196036064] [2023-08-03 20:06:36,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196036064] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:06:36,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202170882] [2023-08-03 20:06:36,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:36,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:36,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:06:36,025 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:06:36,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 20:06:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:36,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:06:36,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:06:36,117 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 20:06:36,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:06:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 20:06:36,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202170882] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:06:36,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:06:36,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 20:06:36,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31682498] [2023-08-03 20:06:36,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:06:36,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:06:36,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:06:36,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:06:36,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:06:36,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 275 [2023-08-03 20:06:36,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:36,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:06:36,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 275 [2023-08-03 20:06:36,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:06:36,809 INFO L124 PetriNetUnfolderBase]: 7506/9977 cut-off events. [2023-08-03 20:06:36,810 INFO L125 PetriNetUnfolderBase]: For 3231/3231 co-relation queries the response was YES. [2023-08-03 20:06:36,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22197 conditions, 9977 events. 7506/9977 cut-off events. For 3231/3231 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 48649 event pairs, 3426 based on Foata normal form. 15/8215 useless extension candidates. Maximal degree in co-relation 20311. Up to 8460 conditions per place. [2023-08-03 20:06:36,867 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 92 selfloop transitions, 3 changer transitions 1/120 dead transitions. [2023-08-03 20:06:36,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 120 transitions, 534 flow [2023-08-03 20:06:36,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:06:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:06:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 625 transitions. [2023-08-03 20:06:36,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2023-08-03 20:06:36,869 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 625 transitions. [2023-08-03 20:06:36,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 625 transitions. [2023-08-03 20:06:36,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:06:36,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 625 transitions. [2023-08-03 20:06:36,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.25) internal successors, (625), 4 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:36,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:36,873 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:36,873 INFO L175 Difference]: Start difference. First operand has 75 places, 74 transitions, 242 flow. Second operand 4 states and 625 transitions. [2023-08-03 20:06:36,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 120 transitions, 534 flow [2023-08-03 20:06:36,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 120 transitions, 530 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 20:06:36,899 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 252 flow [2023-08-03 20:06:36,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-08-03 20:06:36,900 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 18 predicate places. [2023-08-03 20:06:36,900 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 252 flow [2023-08-03 20:06:36,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:36,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:36,901 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:06:36,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 20:06:37,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:37,102 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:06:37,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:37,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1303985662, now seen corresponding path program 1 times [2023-08-03 20:06:37,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:37,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58374902] [2023-08-03 20:06:37,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:37,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 20:06:37,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:37,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58374902] [2023-08-03 20:06:37,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58374902] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:06:37,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:06:37,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 20:06:37,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798445311] [2023-08-03 20:06:37,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:06:37,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:06:37,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:06:37,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:06:37,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:06:37,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 275 [2023-08-03 20:06:37,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:37,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:06:37,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 275 [2023-08-03 20:06:37,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:06:38,043 INFO L124 PetriNetUnfolderBase]: 10768/14550 cut-off events. [2023-08-03 20:06:38,044 INFO L125 PetriNetUnfolderBase]: For 5354/5354 co-relation queries the response was YES. [2023-08-03 20:06:38,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31861 conditions, 14550 events. 10768/14550 cut-off events. For 5354/5354 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 78728 event pairs, 1886 based on Foata normal form. 435/12157 useless extension candidates. Maximal degree in co-relation 31640. Up to 9664 conditions per place. [2023-08-03 20:06:38,234 INFO L140 encePairwiseOnDemand]: 270/275 looper letters, 83 selfloop transitions, 3 changer transitions 1/111 dead transitions. [2023-08-03 20:06:38,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 111 transitions, 572 flow [2023-08-03 20:06:38,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:06:38,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:06:38,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 476 transitions. [2023-08-03 20:06:38,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.576969696969697 [2023-08-03 20:06:38,237 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 476 transitions. [2023-08-03 20:06:38,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 476 transitions. [2023-08-03 20:06:38,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:06:38,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 476 transitions. [2023-08-03 20:06:38,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:38,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:38,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:38,240 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 252 flow. Second operand 3 states and 476 transitions. [2023-08-03 20:06:38,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 111 transitions, 572 flow [2023-08-03 20:06:38,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 111 transitions, 564 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 20:06:38,273 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 267 flow [2023-08-03 20:06:38,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2023-08-03 20:06:38,274 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 19 predicate places. [2023-08-03 20:06:38,274 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 267 flow [2023-08-03 20:06:38,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:38,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:38,274 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:06:38,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-03 20:06:38,275 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:06:38,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:38,275 INFO L85 PathProgramCache]: Analyzing trace with hash -518269563, now seen corresponding path program 1 times [2023-08-03 20:06:38,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:38,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853090943] [2023-08-03 20:06:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:38,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 20:06:38,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:38,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853090943] [2023-08-03 20:06:38,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853090943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:06:38,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:06:38,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 20:06:38,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939504674] [2023-08-03 20:06:38,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:06:38,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:06:38,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:06:38,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:06:38,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:06:38,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 275 [2023-08-03 20:06:38,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:38,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:06:38,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 275 [2023-08-03 20:06:38,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:06:39,570 INFO L124 PetriNetUnfolderBase]: 14673/20223 cut-off events. [2023-08-03 20:06:39,570 INFO L125 PetriNetUnfolderBase]: For 8673/8673 co-relation queries the response was YES. [2023-08-03 20:06:39,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45694 conditions, 20223 events. 14673/20223 cut-off events. For 8673/8673 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 113342 event pairs, 2262 based on Foata normal form. 591/16727 useless extension candidates. Maximal degree in co-relation 45466. Up to 13302 conditions per place. [2023-08-03 20:06:39,724 INFO L140 encePairwiseOnDemand]: 270/275 looper letters, 82 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2023-08-03 20:06:39,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 109 transitions, 565 flow [2023-08-03 20:06:39,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:06:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:06:39,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-08-03 20:06:39,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709090909090909 [2023-08-03 20:06:39,727 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-08-03 20:06:39,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-08-03 20:06:39,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:06:39,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-08-03 20:06:39,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:39,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:39,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:39,730 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 267 flow. Second operand 3 states and 471 transitions. [2023-08-03 20:06:39,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 109 transitions, 565 flow [2023-08-03 20:06:39,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 109 transitions, 560 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:06:39,785 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 285 flow [2023-08-03 20:06:39,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-08-03 20:06:39,785 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 21 predicate places. [2023-08-03 20:06:39,785 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 285 flow [2023-08-03 20:06:39,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:39,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:39,786 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:06:39,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-03 20:06:39,786 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:06:39,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:39,787 INFO L85 PathProgramCache]: Analyzing trace with hash 171894743, now seen corresponding path program 1 times [2023-08-03 20:06:39,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:39,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424873756] [2023-08-03 20:06:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:39,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:39,932 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 20:06:39,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:39,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424873756] [2023-08-03 20:06:39,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424873756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:06:39,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:06:39,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 20:06:39,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791722324] [2023-08-03 20:06:39,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:06:39,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 20:06:39,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:06:39,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 20:06:39,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 20:06:39,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 275 [2023-08-03 20:06:39,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:39,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:06:39,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 275 [2023-08-03 20:06:39,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:06:46,850 INFO L124 PetriNetUnfolderBase]: 68958/93021 cut-off events. [2023-08-03 20:06:46,851 INFO L125 PetriNetUnfolderBase]: For 60534/60534 co-relation queries the response was YES. [2023-08-03 20:06:47,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234072 conditions, 93021 events. 68958/93021 cut-off events. For 60534/60534 co-relation queries the response was YES. Maximal size of possible extension queue 2844. Compared 611027 event pairs, 20555 based on Foata normal form. 0/77561 useless extension candidates. Maximal degree in co-relation 233506. Up to 45552 conditions per place. [2023-08-03 20:06:47,554 INFO L140 encePairwiseOnDemand]: 266/275 looper letters, 107 selfloop transitions, 5 changer transitions 0/130 dead transitions. [2023-08-03 20:06:47,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 130 transitions, 732 flow [2023-08-03 20:06:47,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:06:47,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:06:47,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 604 transitions. [2023-08-03 20:06:47,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490909090909091 [2023-08-03 20:06:47,556 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 604 transitions. [2023-08-03 20:06:47,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 604 transitions. [2023-08-03 20:06:47,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:06:47,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 604 transitions. [2023-08-03 20:06:47,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:47,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:47,560 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:47,560 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 285 flow. Second operand 4 states and 604 transitions. [2023-08-03 20:06:47,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 130 transitions, 732 flow [2023-08-03 20:06:48,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 130 transitions, 727 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:06:48,110 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 317 flow [2023-08-03 20:06:48,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=317, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2023-08-03 20:06:48,111 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 25 predicate places. [2023-08-03 20:06:48,111 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 317 flow [2023-08-03 20:06:48,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:48,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:48,111 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:06:48,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-03 20:06:48,112 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:06:48,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:48,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1744175154, now seen corresponding path program 1 times [2023-08-03 20:06:48,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:48,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964071582] [2023-08-03 20:06:48,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:48,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-03 20:06:48,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:48,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964071582] [2023-08-03 20:06:48,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964071582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:06:48,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:06:48,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 20:06:48,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419451967] [2023-08-03 20:06:48,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:06:48,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 20:06:48,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:06:48,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 20:06:48,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 20:06:48,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 275 [2023-08-03 20:06:48,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:48,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:06:48,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 275 [2023-08-03 20:06:48,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:07:19,957 INFO L124 PetriNetUnfolderBase]: 300968/416639 cut-off events. [2023-08-03 20:07:19,957 INFO L125 PetriNetUnfolderBase]: For 302020/326907 co-relation queries the response was YES. [2023-08-03 20:07:21,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1032494 conditions, 416639 events. 300968/416639 cut-off events. For 302020/326907 co-relation queries the response was YES. Maximal size of possible extension queue 10891. Compared 3322819 event pairs, 91833 based on Foata normal form. 11147/403645 useless extension candidates. Maximal degree in co-relation 1031130. Up to 204882 conditions per place. [2023-08-03 20:07:23,087 INFO L140 encePairwiseOnDemand]: 266/275 looper letters, 101 selfloop transitions, 5 changer transitions 0/126 dead transitions. [2023-08-03 20:07:23,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 126 transitions, 720 flow [2023-08-03 20:07:23,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:07:23,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:07:23,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 599 transitions. [2023-08-03 20:07:23,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5445454545454546 [2023-08-03 20:07:23,089 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 599 transitions. [2023-08-03 20:07:23,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 599 transitions. [2023-08-03 20:07:23,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:07:23,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 599 transitions. [2023-08-03 20:07:23,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:07:23,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:07:23,092 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:07:23,092 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 317 flow. Second operand 4 states and 599 transitions. [2023-08-03 20:07:23,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 126 transitions, 720 flow [2023-08-03 20:07:29,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 126 transitions, 719 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:07:29,977 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 351 flow [2023-08-03 20:07:29,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2023-08-03 20:07:29,978 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 29 predicate places. [2023-08-03 20:07:29,978 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 351 flow [2023-08-03 20:07:29,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:07:29,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:07:29,978 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:07:29,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-03 20:07:29,978 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:07:29,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:07:29,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1983459302, now seen corresponding path program 1 times [2023-08-03 20:07:29,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:07:29,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845087802] [2023-08-03 20:07:29,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:07:29,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:07:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:07:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 20:07:30,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:07:30,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845087802] [2023-08-03 20:07:30,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845087802] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:07:30,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263636451] [2023-08-03 20:07:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:07:30,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:07:30,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:07:30,165 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:07:30,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 20:07:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:07:30,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-03 20:07:30,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:07:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 20:07:30,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:07:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 20:07:30,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263636451] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:07:30,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:07:30,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-03 20:07:30,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130149152] [2023-08-03 20:07:30,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:07:30,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:07:30,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:07:30,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:07:30,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:07:30,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 275 [2023-08-03 20:07:30,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 351 flow. Second operand has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:07:30,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:07:30,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 275 [2023-08-03 20:07:30,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:09:11,880 INFO L124 PetriNetUnfolderBase]: 731114/1056455 cut-off events. [2023-08-03 20:09:11,880 INFO L125 PetriNetUnfolderBase]: For 795263/842058 co-relation queries the response was YES. [2023-08-03 20:09:19,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2735266 conditions, 1056455 events. 731114/1056455 cut-off events. For 795263/842058 co-relation queries the response was YES. Maximal size of possible extension queue 28378. Compared 9910038 event pairs, 105762 based on Foata normal form. 24641/1041517 useless extension candidates. Maximal degree in co-relation 2731885. Up to 436903 conditions per place. [2023-08-03 20:09:25,639 INFO L140 encePairwiseOnDemand]: 265/275 looper letters, 193 selfloop transitions, 25 changer transitions 1/243 dead transitions. [2023-08-03 20:09:25,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 243 transitions, 1464 flow [2023-08-03 20:09:25,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:09:25,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:09:25,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 851 transitions. [2023-08-03 20:09:25,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.618909090909091 [2023-08-03 20:09:25,642 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 851 transitions. [2023-08-03 20:09:25,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 851 transitions. [2023-08-03 20:09:25,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:09:25,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 851 transitions. [2023-08-03 20:09:25,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:09:25,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:09:25,646 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:09:25,646 INFO L175 Difference]: Start difference. First operand has 90 places, 82 transitions, 351 flow. Second operand 5 states and 851 transitions. [2023-08-03 20:09:25,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 243 transitions, 1464 flow [2023-08-03 20:11:03,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 243 transitions, 1463 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:11:03,797 INFO L231 Difference]: Finished difference. Result has 94 places, 106 transitions, 479 flow [2023-08-03 20:11:03,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=479, PETRI_PLACES=94, PETRI_TRANSITIONS=106} [2023-08-03 20:11:03,798 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 33 predicate places. [2023-08-03 20:11:03,798 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 106 transitions, 479 flow [2023-08-03 20:11:03,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:11:03,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:11:03,798 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:11:03,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-03 20:11:04,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 20:11:04,003 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:11:04,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:11:04,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1510921989, now seen corresponding path program 1 times [2023-08-03 20:11:04,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:11:04,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235150158] [2023-08-03 20:11:04,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:11:04,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:11:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:11:04,064 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 20:11:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:11:04,162 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 20:11:04,162 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 20:11:04,162 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 20:11:04,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 20:11:04,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 20:11:04,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-03 20:11:04,163 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:11:04,166 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 20:11:04,166 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 20:11:04,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 08:11:04 BasicIcfg [2023-08-03 20:11:04,274 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 20:11:04,275 INFO L158 Benchmark]: Toolchain (without parser) took 288210.04ms. Allocated memory was 534.8MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 483.0MB in the beginning and 8.0GB in the end (delta: -7.5GB). Peak memory consumption was 8.0GB. Max. memory is 16.0GB. [2023-08-03 20:11:04,275 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 329.3MB. Free memory was 278.1MB in the beginning and 278.0MB in the end (delta: 111.1kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 20:11:04,275 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.27ms. Allocated memory is still 534.8MB. Free memory was 482.7MB in the beginning and 471.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-03 20:11:04,275 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.51ms. Allocated memory is still 534.8MB. Free memory was 471.5MB in the beginning and 469.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 20:11:04,275 INFO L158 Benchmark]: Boogie Preprocessor took 23.35ms. Allocated memory is still 534.8MB. Free memory was 469.8MB in the beginning and 468.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 20:11:04,276 INFO L158 Benchmark]: RCFGBuilder took 426.88ms. Allocated memory is still 534.8MB. Free memory was 468.3MB in the beginning and 453.0MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-03 20:11:04,276 INFO L158 Benchmark]: TraceAbstraction took 287523.00ms. Allocated memory was 534.8MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 452.4MB in the beginning and 8.0GB in the end (delta: -7.5GB). Peak memory consumption was 8.0GB. Max. memory is 16.0GB. [2023-08-03 20:11:04,278 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 329.3MB. Free memory was 278.1MB in the beginning and 278.0MB in the end (delta: 111.1kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 204.27ms. Allocated memory is still 534.8MB. Free memory was 482.7MB in the beginning and 471.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.51ms. Allocated memory is still 534.8MB. Free memory was 471.5MB in the beginning and 469.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.35ms. Allocated memory is still 534.8MB. Free memory was 469.8MB in the beginning and 468.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 426.88ms. Allocated memory is still 534.8MB. Free memory was 468.3MB in the beginning and 453.0MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 287523.00ms. Allocated memory was 534.8MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 452.4MB in the beginning and 8.0GB in the end (delta: -7.5GB). Peak memory consumption was 8.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 108 PlacesBefore, 27 PlacesAfterwards, 122 TransitionsBefore, 28 TransitionsAfterwards, 4608 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 13 ChoiceCompositions, 111 TotalNumberOfCompositions, 4475 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4371, independent: 4361, independent conditional: 0, independent unconditional: 4361, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2313, independent: 2307, independent conditional: 0, independent unconditional: 2307, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4371, independent: 2054, independent conditional: 0, independent unconditional: 2054, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 2313, unknown conditional: 0, unknown unconditional: 2313] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 140 PlacesBefore, 61 PlacesAfterwards, 164 TransitionsBefore, 72 TransitionsAfterwards, 12528 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 13 ChoiceCompositions, 111 TotalNumberOfCompositions, 39620 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24296, independent: 23920, independent conditional: 0, independent unconditional: 23920, dependent: 376, dependent conditional: 0, dependent unconditional: 376, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6635, independent: 6558, independent conditional: 0, independent unconditional: 6558, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 24296, independent: 17362, independent conditional: 0, independent unconditional: 17362, dependent: 299, dependent conditional: 0, dependent unconditional: 299, unknown: 6635, unknown conditional: 0, unknown unconditional: 6635] , Statistics on independence cache: Total cache size (in pairs): 1135, Positive cache size: 1096, Positive conditional cache size: 0, Positive unconditional cache size: 1096, Negative cache size: 39, Negative conditional cache size: 0, Negative unconditional cache size: 39, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 101]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L38] 0 int pos; [L39] 0 _Bool d1, d2, g1, g2; [L86] 0 pthread_t t1[2], t2[2]; [L89] 0 d1 = 1 [L90] 0 d2 = 1 [L91] 0 g1 = 1 [L92] 0 g2 = 1 [L95] 0 int asdf=0; VAL [asdf=0, d1=1, d2=1, g1=1, g2=1, pos=0, t1={5:0}, t2={3:0}] [L95] COND TRUE 0 asdf<2 [L95] FCALL, FORK 0 pthread_create(&t1[asdf], 0, thread1, 0) VAL [asdf=0, d1=1, d2=1, g1=1, g2=1, pos=0, pthread_create(&t1[asdf], 0, thread1, 0)=-4, t1={5:0}, t2={3:0}] [L42] COND TRUE 1 \read(g1) VAL [d1=1, d2=1, g1=1, g2=1, pos=0] [L43] COND TRUE 1 \read(d1) VAL [d1=1, d2=1, g1=1, g2=1, pos=0] [L45] 1 pos++ VAL [d1=1, d2=1, g1=1, g2=1, pos=1] [L52] 1 d1 = !d1 VAL [d1=0, d2=1, g1=1, g2=1, pos=1] [L53] COND FALSE 1 !(\read(d1)) VAL [__VERIFIER_nondet_bool()=50, d1=0, d2=1, g1=1, g2=1, pos=1] [L42] COND TRUE 1 \read(g1) VAL [__VERIFIER_nondet_bool()=50, d1=0, d2=1, g1=1, g2=1, pos=1] [L43] COND FALSE 1 !(\read(d1)) VAL [__VERIFIER_nondet_bool()=50, d1=0, d2=1, g1=1, g2=1, pos=1] [L49] 1 pos-- VAL [__VERIFIER_nondet_bool()=50, d1=0, d2=1, g1=1, g2=1, pos=0] [L52] 1 d1 = !d1 VAL [__VERIFIER_nondet_bool()=50, d1=1, d2=1, g1=1, g2=1, pos=0] [L53] COND TRUE 1 \read(d1) [L54] COND TRUE 1 __VERIFIER_nondet_bool() VAL [__VERIFIER_nondet_bool()=1, d1=1, d2=1, g1=1, g2=1, pos=0] [L95] 0 asdf++ VAL [__VERIFIER_nondet_bool()=1, asdf=1, d1=1, d2=1, g1=1, g2=1, pos=0, t1={5:0}, t2={3:0}] [L95] COND TRUE 0 asdf<2 [L95] FCALL, FORK 0 pthread_create(&t1[asdf], 0, thread1, 0) VAL [__VERIFIER_nondet_bool()=1, asdf=1, d1=1, d2=1, g1=1, g2=1, pos=0, pthread_create(&t1[asdf], 0, thread1, 0)=-3, t1={5:0}, t2={3:0}] [L95] 0 asdf++ VAL [__VERIFIER_nondet_bool()=1, asdf=2, d1=1, d2=1, g1=1, g2=1, pos=0, t1={5:0}, t2={3:0}] [L95] COND FALSE 0 !(asdf<2) [L96] 0 int asdf=0; VAL [__VERIFIER_nondet_bool()=1, asdf=0, asdf=2, d1=1, d2=1, g1=1, g2=1, pos=0, t1={5:0}, t2={3:0}] [L96] COND TRUE 0 asdf<2 [L96] FCALL, FORK 0 pthread_create(&t2[asdf], 0, thread2, 0) VAL [__VERIFIER_nondet_bool()=1, asdf=0, asdf=2, d1=1, d2=1, g1=1, g2=1, pos=0, pthread_create(&t2[asdf], 0, thread2, 0)=-2, t1={5:0}, t2={3:0}] [L64] COND TRUE 3 \read(g2) VAL [__VERIFIER_nondet_bool()=1, d1=1, d2=1, g1=1, g2=1, pos=0] [L96] 0 asdf++ VAL [__VERIFIER_nondet_bool()=1, asdf=1, asdf=2, d1=1, d2=1, g1=1, g2=1, pos=0, t1={5:0}, t2={3:0}] [L96] COND TRUE 0 asdf<2 [L55] 1 g1 = 0 VAL [d1=1, d2=1, g1=0, g2=1, pos=0] [L42] COND FALSE 1 !(\read(g1)) [L60] 1 return 0; [L96] FCALL, FORK 0 pthread_create(&t2[asdf], 0, thread2, 0) VAL [\result={0:0}, asdf=1, asdf=2, d1=1, d2=1, g1=0, g2=1, pos=0, pthread_create(&t2[asdf], 0, thread2, 0)=-1, t1={5:0}, t2={3:0}] [L64] COND TRUE 4 \read(g2) VAL [\result={0:0}, d1=1, d2=1, g1=0, g2=1, pos=0] [L65] COND TRUE 4 \read(d2) VAL [\result={0:0}, d1=1, d2=1, g1=0, g2=1, pos=0] [L65] COND TRUE 3 \read(d2) VAL [\result={0:0}, d1=1, d2=1, g1=0, g2=1, pos=0] [L96] 0 asdf++ VAL [\result={0:0}, asdf=2, asdf=2, d1=1, d2=1, g1=0, g2=1, pos=0, t1={5:0}, t2={3:0}] [L96] COND FALSE 0 !(asdf<2) [L97] 0 int asdf=0; VAL [\result={0:0}, asdf=0, asdf=2, asdf=2, d1=1, d2=1, g1=0, g2=1, pos=0, t1={5:0}, t2={3:0}] [L97] COND TRUE 0 asdf<2 [L97] 0 t1[asdf] VAL [\result={0:0}, asdf=0, asdf=2, asdf=2, d1=1, d2=1, g1=0, g2=1, pos=0, t1={5:0}, t1[asdf]=-4, t2={3:0}] [L97] FCALL, JOIN 1 pthread_join(t1[asdf], 0) VAL [\result={0:0}, asdf=0, asdf=2, asdf=2, d1=1, d2=1, g1=0, g2=1, pos=0, t1={5:0}, t1[asdf]=-4, t2={3:0}] [L97] 0 asdf++ VAL [\result={0:0}, asdf=1, asdf=2, asdf=2, d1=1, d2=1, g1=0, g2=1, pos=0, t1={5:0}, t2={3:0}] [L97] COND TRUE 0 asdf<2 [L97] 0 t1[asdf] VAL [\result={0:0}, asdf=1, asdf=2, asdf=2, d1=1, d2=1, g1=0, g2=1, pos=0, t1={5:0}, t1[asdf]=-3, t2={3:0}] [L67] 3 pos = ( pos + 2 ) VAL [\result={0:0}, d1=1, d2=1, g1=0, g2=1, pos=2] [L74] 3 d2 = !d2 VAL [\result={0:0}, d1=1, d2=0, g1=0, g2=1, pos=2] [L75] COND FALSE 3 !(\read(d2)) VAL [\result={0:0}, __VERIFIER_nondet_bool()=49, d1=1, d2=0, g1=0, g2=1, pos=2] [L42] COND FALSE 2 !(\read(g1)) [L60] 2 return 0; [L97] FCALL, JOIN 2 pthread_join(t1[asdf], 0) VAL [\result={0:0}, __VERIFIER_nondet_bool()=49, asdf=1, asdf=2, asdf=2, d1=1, d2=0, g1=0, g2=1, pos=2, t1={5:0}, t1[asdf]=-3, t2={3:0}] [L97] 0 asdf++ VAL [\result={0:0}, __VERIFIER_nondet_bool()=49, asdf=2, asdf=2, asdf=2, d1=1, d2=0, g1=0, g2=1, pos=2, t1={5:0}, t2={3:0}] [L97] COND FALSE 0 !(asdf<2) [L98] 0 int asdf=0; VAL [\result={0:0}, __VERIFIER_nondet_bool()=49, asdf=0, asdf=2, asdf=2, asdf=2, d1=1, d2=0, g1=0, g2=1, pos=2, t1={5:0}, t2={3:0}] [L98] COND TRUE 0 asdf<2 [L98] 0 t2[asdf] VAL [\result={0:0}, __VERIFIER_nondet_bool()=49, asdf=0, asdf=2, asdf=2, asdf=2, d1=1, d2=0, g1=0, g2=1, pos=2, t1={5:0}, t2={3:0}, t2[asdf]=-2] [L67] 4 pos = ( pos + 2 ) VAL [\result={0:0}, __VERIFIER_nondet_bool()=49, d1=1, d2=0, g1=0, g2=1, pos=4] [L74] 4 d2 = !d2 VAL [\result={0:0}, __VERIFIER_nondet_bool()=49, d1=1, d2=1, g1=0, g2=1, pos=4] [L75] COND TRUE 4 \read(d2) [L76] COND TRUE 4 __VERIFIER_nondet_bool() [L77] 4 g2 = 0 VAL [\result={0:0}, __VERIFIER_nondet_bool()=49, d1=1, d2=1, g1=0, g2=0, pos=4] [L64] COND FALSE 3 !(\read(g2)) [L82] 3 return 0; [L64] COND FALSE 4 !(\read(g2)) [L82] 4 return 0; [L98] FCALL, JOIN 3 pthread_join(t2[asdf], 0) VAL [\result={0:0}, \result={0:0}, __VERIFIER_nondet_bool()=49, asdf=0, asdf=2, asdf=2, asdf=2, d1=1, d2=1, g1=0, g2=0, pos=4, t1={5:0}, t2={3:0}, t2[asdf]=-2] [L98] 0 asdf++ VAL [\result={0:0}, \result={0:0}, __VERIFIER_nondet_bool()=49, asdf=1, asdf=2, asdf=2, asdf=2, d1=1, d2=1, g1=0, g2=0, pos=4, t1={5:0}, t2={3:0}] [L98] COND TRUE 0 asdf<2 [L98] 0 t2[asdf] VAL [\result={0:0}, \result={0:0}, __VERIFIER_nondet_bool()=49, asdf=1, asdf=2, asdf=2, asdf=2, d1=1, d2=1, g1=0, g2=0, pos=4, t1={5:0}, t2={3:0}, t2[asdf]=-1] [L98] FCALL, JOIN 4 pthread_join(t2[asdf], 0) VAL [\result={0:0}, \result={0:0}, __VERIFIER_nondet_bool()=49, asdf=1, asdf=2, asdf=2, asdf=2, d1=1, d2=1, g1=0, g2=0, pos=4, t1={5:0}, t2={3:0}, t2[asdf]=-1] [L98] 0 asdf++ VAL [\result={0:0}, \result={0:0}, __VERIFIER_nondet_bool()=49, asdf=2, asdf=2, asdf=2, asdf=2, d1=1, d2=1, g1=0, g2=0, pos=4, t1={5:0}, t2={3:0}] [L98] COND FALSE 0 !(asdf<2) [L100] CALL 0 assume_abort_if_not(pos != 0) [L35] COND FALSE 0 !(!cond) [L100] RET 0 assume_abort_if_not(pos != 0) [L101] 0 reach_error() VAL [\result={0:0}, \result={0:0}, __VERIFIER_nondet_bool()=49, asdf=2, asdf=2, asdf=2, asdf=2, d1=1, d2=1, g1=0, g2=0, pos=4, t1={5:0}, t2={3:0}] - UnprovableResult [Line: 96]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 95]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 132 locations, 3 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: 3.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55 IncrementalHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 55 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 160 locations, 3 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: 283.8s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 277.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 947 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 834 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2518 IncrementalHoareTripleChecker+Invalid, 2602 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 13 mSDtfsCounter, 2518 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 460 GetRequests, 403 SyntacticMatches, 18 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=479occurred in iteration=15, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 763 NumberOfCodeBlocks, 763 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 843 ConstructedInterpolants, 0 QuantifiedInterpolants, 1657 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1315 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 30 InterpolantComputations, 10 PerfectInterpolantSequences, 361/416 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 20:11:04,311 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...