/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/added_bound_to_unbounded/pthread-ext_37_stack_lock_p0_vs_concur_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:50:37,170 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:50:37,246 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:50:37,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:50:37,253 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:50:37,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:50:37,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:50:37,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:50:37,281 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:50:37,284 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:50:37,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:50:37,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:50:37,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:50:37,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:50:37,286 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:50:37,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:50:37,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:50:37,287 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:50:37,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:50:37,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:50:37,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:50:37,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:50:37,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:50:37,288 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:50:37,288 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:50:37,290 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:50:37,290 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:50:37,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:50:37,290 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:50:37,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:50:37,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:50:37,292 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:50:37,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:50:37,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:50:37,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:50:37,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:50:37,293 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:50:37,293 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:50:37,293 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:50:37,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:50:37,293 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:50:37,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:50:37,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:50:37,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:50:37,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:50:37,553 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:50:37,554 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:50:37,555 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_37_stack_lock_p0_vs_concur_bound2.i [2023-08-03 15:50:38,629 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:50:38,826 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:50:38,827 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_37_stack_lock_p0_vs_concur_bound2.i [2023-08-03 15:50:38,839 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82e349a2f/b826428fb20a42638b0df62983ff3050/FLAGa7ddff146 [2023-08-03 15:50:38,851 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82e349a2f/b826428fb20a42638b0df62983ff3050 [2023-08-03 15:50:38,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:50:38,855 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:50:38,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:50:38,856 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:50:38,859 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:50:38,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:50:38" (1/1) ... [2023-08-03 15:50:38,860 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb8da8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:50:38, skipping insertion in model container [2023-08-03 15:50:38,860 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:50:38" (1/1) ... [2023-08-03 15:50:38,892 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:50:39,196 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_37_stack_lock_p0_vs_concur_bound2.i[30726,30739] [2023-08-03 15:50:39,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:50:39,215 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:50:39,245 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-03 15:50:39,247 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-03 15:50:39,270 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_37_stack_lock_p0_vs_concur_bound2.i[30726,30739] [2023-08-03 15:50:39,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:50:39,312 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:50:39,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:50:39 WrapperNode [2023-08-03 15:50:39,313 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:50:39,314 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:50:39,314 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:50:39,314 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:50:39,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:50:39" (1/1) ... [2023-08-03 15:50:39,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:50:39" (1/1) ... [2023-08-03 15:50:39,356 INFO L138 Inliner]: procedures = 171, calls = 26, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 87 [2023-08-03 15:50:39,357 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:50:39,357 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:50:39,357 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:50:39,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:50:39,367 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:50:39" (1/1) ... [2023-08-03 15:50:39,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:50:39" (1/1) ... [2023-08-03 15:50:39,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:50:39" (1/1) ... [2023-08-03 15:50:39,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:50:39" (1/1) ... [2023-08-03 15:50:39,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:50:39" (1/1) ... [2023-08-03 15:50:39,378 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:50:39" (1/1) ... [2023-08-03 15:50:39,385 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:50:39" (1/1) ... [2023-08-03 15:50:39,386 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:50:39" (1/1) ... [2023-08-03 15:50:39,387 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:50:39,388 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:50:39,388 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:50:39,388 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:50:39,389 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:50:39" (1/1) ... [2023-08-03 15:50:39,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:50:39,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:50:39,429 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 15:50:39,454 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 15:50:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:50:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 15:50:39,468 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 15:50:39,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:50:39,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:50:39,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:50:39,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:50:39,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:50:39,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:50:39,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:50:39,473 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 15:50:39,614 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:50:39,617 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:50:39,756 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:50:39,794 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:50:39,795 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 15:50:39,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:50:39 BoogieIcfgContainer [2023-08-03 15:50:39,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:50:39,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:50:39,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:50:39,802 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:50:39,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:50:38" (1/3) ... [2023-08-03 15:50:39,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b4bbf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:50:39, skipping insertion in model container [2023-08-03 15:50:39,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:50:39" (2/3) ... [2023-08-03 15:50:39,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b4bbf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:50:39, skipping insertion in model container [2023-08-03 15:50:39,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:50:39" (3/3) ... [2023-08-03 15:50:39,804 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_37_stack_lock_p0_vs_concur_bound2.i [2023-08-03 15:50:39,811 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:50:39,818 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:50:39,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 15:50:39,819 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:50:39,861 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:50:39,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 77 transitions, 159 flow [2023-08-03 15:50:39,947 INFO L124 PetriNetUnfolderBase]: 7/87 cut-off events. [2023-08-03 15:50:39,948 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:50:39,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 87 events. 7/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 96 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2023-08-03 15:50:39,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 77 transitions, 159 flow [2023-08-03 15:50:39,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 77 transitions, 159 flow [2023-08-03 15:50:39,958 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:50:39,966 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 77 transitions, 159 flow [2023-08-03 15:50:39,968 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 77 transitions, 159 flow [2023-08-03 15:50:39,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 77 transitions, 159 flow [2023-08-03 15:50:39,986 INFO L124 PetriNetUnfolderBase]: 7/87 cut-off events. [2023-08-03 15:50:39,986 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:50:39,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 87 events. 7/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 96 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2023-08-03 15:50:39,989 INFO L119 LiptonReduction]: Number of co-enabled transitions 1440 [2023-08-03 15:50:41,385 INFO L134 LiptonReduction]: Checked pairs total: 1834 [2023-08-03 15:50:41,386 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-08-03 15:50:41,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:50:41,415 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;@6531389e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:50:41,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 15:50:41,421 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:50:41,422 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-03 15:50:41,422 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:50:41,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:50:41,423 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:50:41,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:50:41,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:50:41,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1472275748, now seen corresponding path program 1 times [2023-08-03 15:50:41,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:50:41,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353775199] [2023-08-03 15:50:41,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:50:41,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:50:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:50:41,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:50:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:50:41,559 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:50:41,560 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:50:41,561 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 15:50:41,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 15:50:41,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 15:50:41,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:50:41,564 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 15:50:41,567 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:50:41,567 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:50:41,613 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:50:41,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 258 flow [2023-08-03 15:50:41,669 INFO L124 PetriNetUnfolderBase]: 13/148 cut-off events. [2023-08-03 15:50:41,669 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:50:41,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 148 events. 13/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 307 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-08-03 15:50:41,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 123 transitions, 258 flow [2023-08-03 15:50:41,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 123 transitions, 258 flow [2023-08-03 15:50:41,676 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:50:41,676 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 123 transitions, 258 flow [2023-08-03 15:50:41,677 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 123 transitions, 258 flow [2023-08-03 15:50:41,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 258 flow [2023-08-03 15:50:41,712 INFO L124 PetriNetUnfolderBase]: 13/148 cut-off events. [2023-08-03 15:50:41,712 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:50:41,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 148 events. 13/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 307 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-08-03 15:50:41,721 INFO L119 LiptonReduction]: Number of co-enabled transitions 7020 [2023-08-03 15:50:43,097 INFO L134 LiptonReduction]: Checked pairs total: 16748 [2023-08-03 15:50:43,098 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-03 15:50:43,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:50:43,101 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;@6531389e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:50:43,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 15:50:43,104 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:50:43,105 INFO L124 PetriNetUnfolderBase]: 1/28 cut-off events. [2023-08-03 15:50:43,105 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:50:43,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:50:43,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:50:43,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:50:43,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:50:43,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1023515994, now seen corresponding path program 1 times [2023-08-03 15:50:43,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:50:43,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068722562] [2023-08-03 15:50:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:50:43,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:50:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:50:43,235 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 15:50:43,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:50:43,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068722562] [2023-08-03 15:50:43,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068722562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:50:43,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:50:43,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:50:43,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274691376] [2023-08-03 15:50:43,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:50:43,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:50:43,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:50:43,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:50:43,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:50:43,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 217 [2023-08-03 15:50:43,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 15:50:43,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:50:43,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 217 [2023-08-03 15:50:43,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:50:43,493 INFO L124 PetriNetUnfolderBase]: 881/1770 cut-off events. [2023-08-03 15:50:43,493 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-08-03 15:50:43,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3226 conditions, 1770 events. 881/1770 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 10442 event pairs, 720 based on Foata normal form. 92/1510 useless extension candidates. Maximal degree in co-relation 2457. Up to 1292 conditions per place. [2023-08-03 15:50:43,506 INFO L140 encePairwiseOnDemand]: 212/217 looper letters, 38 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-08-03 15:50:43,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 209 flow [2023-08-03 15:50:43,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:50:43,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:50:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-08-03 15:50:43,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299539170506913 [2023-08-03 15:50:43,519 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-08-03 15:50:43,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-08-03 15:50:43,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:50:43,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-08-03 15:50:43,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 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 15:50:43,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:50:43,530 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:50:43,531 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 108 flow. Second operand 3 states and 345 transitions. [2023-08-03 15:50:43,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 209 flow [2023-08-03 15:50:43,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 57 transitions, 207 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 15:50:43,536 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 100 flow [2023-08-03 15:50:43,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-08-03 15:50:43,540 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2023-08-03 15:50:43,540 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 100 flow [2023-08-03 15:50:43,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 15:50:43,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:50:43,541 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:50:43,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:50:43,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:50:43,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:50:43,542 INFO L85 PathProgramCache]: Analyzing trace with hash -425759687, now seen corresponding path program 1 times [2023-08-03 15:50:43,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:50:43,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725183960] [2023-08-03 15:50:43,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:50:43,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:50:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:50:43,635 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 15:50:43,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:50:43,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725183960] [2023-08-03 15:50:43,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725183960] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:50:43,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30569315] [2023-08-03 15:50:43,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:50:43,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:50:43,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:50:43,643 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 15:50:43,651 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 15:50:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:50:43,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:50:43,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:50:43,834 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 15:50:43,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:50:43,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30569315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:50:43,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:50:43,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 15:50:43,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989154866] [2023-08-03 15:50:43,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:50:43,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:50:43,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:50:43,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:50:43,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:50:43,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 217 [2023-08-03 15:50:43,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 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 15:50:43,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:50:43,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 217 [2023-08-03 15:50:43,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:50:44,052 INFO L124 PetriNetUnfolderBase]: 626/1208 cut-off events. [2023-08-03 15:50:44,053 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-08-03 15:50:44,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 1208 events. 626/1208 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6556 event pairs, 70 based on Foata normal form. 0/1056 useless extension candidates. Maximal degree in co-relation 2083. Up to 734 conditions per place. [2023-08-03 15:50:44,059 INFO L140 encePairwiseOnDemand]: 213/217 looper letters, 56 selfloop transitions, 4 changer transitions 1/78 dead transitions. [2023-08-03 15:50:44,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 78 transitions, 292 flow [2023-08-03 15:50:44,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:50:44,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:50:44,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2023-08-03 15:50:44,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133640552995392 [2023-08-03 15:50:44,065 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2023-08-03 15:50:44,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2023-08-03 15:50:44,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:50:44,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2023-08-03 15:50:44,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 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 15:50:44,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 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 15:50:44,072 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 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 15:50:44,072 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 100 flow. Second operand 5 states and 557 transitions. [2023-08-03 15:50:44,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 78 transitions, 292 flow [2023-08-03 15:50:44,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 78 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:50:44,075 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 119 flow [2023-08-03 15:50:44,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-08-03 15:50:44,077 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2023-08-03 15:50:44,077 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 119 flow [2023-08-03 15:50:44,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 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 15:50:44,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:50:44,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:50:44,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 15:50:44,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:50:44,284 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:50:44,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:50:44,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1614430064, now seen corresponding path program 1 times [2023-08-03 15:50:44,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:50:44,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664062658] [2023-08-03 15:50:44,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:50:44,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:50:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:50:44,403 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 15:50:44,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:50:44,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664062658] [2023-08-03 15:50:44,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664062658] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:50:44,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:50:44,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:50:44,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118414359] [2023-08-03 15:50:44,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:50:44,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:50:44,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:50:44,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:50:44,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:50:44,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 217 [2023-08-03 15:50:44,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 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 15:50:44,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:50:44,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 217 [2023-08-03 15:50:44,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:50:45,058 INFO L124 PetriNetUnfolderBase]: 2215/4357 cut-off events. [2023-08-03 15:50:45,058 INFO L125 PetriNetUnfolderBase]: For 2735/2735 co-relation queries the response was YES. [2023-08-03 15:50:45,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10036 conditions, 4357 events. 2215/4357 cut-off events. For 2735/2735 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 29185 event pairs, 468 based on Foata normal form. 0/4013 useless extension candidates. Maximal degree in co-relation 7628. Up to 1128 conditions per place. [2023-08-03 15:50:45,083 INFO L140 encePairwiseOnDemand]: 205/217 looper letters, 117 selfloop transitions, 33 changer transitions 12/176 dead transitions. [2023-08-03 15:50:45,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 176 transitions, 840 flow [2023-08-03 15:50:45,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 15:50:45,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 15:50:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 965 transitions. [2023-08-03 15:50:45,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4941116231438812 [2023-08-03 15:50:45,086 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 965 transitions. [2023-08-03 15:50:45,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 965 transitions. [2023-08-03 15:50:45,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:50:45,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 965 transitions. [2023-08-03 15:50:45,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 107.22222222222223) internal successors, (965), 9 states have internal predecessors, (965), 0 states have call successors, (0), 0 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 15:50:45,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 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 15:50:45,094 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 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 15:50:45,095 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 119 flow. Second operand 9 states and 965 transitions. [2023-08-03 15:50:45,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 176 transitions, 840 flow [2023-08-03 15:50:45,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 176 transitions, 839 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:50:45,102 INFO L231 Difference]: Finished difference. Result has 66 places, 78 transitions, 357 flow [2023-08-03 15:50:45,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=357, PETRI_PLACES=66, PETRI_TRANSITIONS=78} [2023-08-03 15:50:45,105 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 17 predicate places. [2023-08-03 15:50:45,105 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 78 transitions, 357 flow [2023-08-03 15:50:45,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 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 15:50:45,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:50:45,106 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:50:45,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 15:50:45,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:50:45,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:50:45,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1071254639, now seen corresponding path program 1 times [2023-08-03 15:50:45,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:50:45,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282535104] [2023-08-03 15:50:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:50:45,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:50:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:50:45,425 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 15:50:45,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:50:45,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282535104] [2023-08-03 15:50:45,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282535104] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:50:45,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241006758] [2023-08-03 15:50:45,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:50:45,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:50:45,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:50:45,434 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 15:50:45,444 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 15:50:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:50:45,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-03 15:50:45,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:50:45,546 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-03 15:50:45,586 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 15:50:45,586 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-03 15:50:45,632 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-03 15:50:45,698 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 15:50:45,738 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 15:50:45,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:50:45,864 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 15:50:45,864 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-08-03 15:50:45,883 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 15:50:45,883 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-08-03 15:50:45,964 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 56 [2023-08-03 15:50:45,976 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-08-03 15:50:45,981 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-08-03 15:50:45,992 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-08-03 15:50:46,110 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 15:50:46,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241006758] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:50:46,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:50:46,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2023-08-03 15:50:46,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428737742] [2023-08-03 15:50:46,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:50:46,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-03 15:50:46,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:50:46,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-03 15:50:46,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=220, Unknown=1, NotChecked=0, Total=272 [2023-08-03 15:50:46,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 217 [2023-08-03 15:50:46,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 78 transitions, 357 flow. Second operand has 17 states, 17 states have (on average 69.82352941176471) internal successors, (1187), 17 states have internal predecessors, (1187), 0 states have call successors, (0), 0 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 15:50:46,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:50:46,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 217 [2023-08-03 15:50:46,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:50:49,618 INFO L124 PetriNetUnfolderBase]: 12028/19646 cut-off events. [2023-08-03 15:50:49,618 INFO L125 PetriNetUnfolderBase]: For 26942/26942 co-relation queries the response was YES. [2023-08-03 15:50:49,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58974 conditions, 19646 events. 12028/19646 cut-off events. For 26942/26942 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 131726 event pairs, 1041 based on Foata normal form. 390/19603 useless extension candidates. Maximal degree in co-relation 50834. Up to 5115 conditions per place. [2023-08-03 15:50:49,847 INFO L140 encePairwiseOnDemand]: 200/217 looper letters, 631 selfloop transitions, 295 changer transitions 25/956 dead transitions. [2023-08-03 15:50:49,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 956 transitions, 5801 flow [2023-08-03 15:50:49,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-03 15:50:49,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-03 15:50:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 4324 transitions. [2023-08-03 15:50:49,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3831974477135767 [2023-08-03 15:50:49,859 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 4324 transitions. [2023-08-03 15:50:49,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 4324 transitions. [2023-08-03 15:50:49,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:50:49,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 4324 transitions. [2023-08-03 15:50:49,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 83.15384615384616) internal successors, (4324), 52 states have internal predecessors, (4324), 0 states have call successors, (0), 0 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 15:50:49,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 217.0) internal successors, (11501), 53 states have internal predecessors, (11501), 0 states have call successors, (0), 0 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 15:50:49,891 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 217.0) internal successors, (11501), 53 states have internal predecessors, (11501), 0 states have call successors, (0), 0 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 15:50:49,891 INFO L175 Difference]: Start difference. First operand has 66 places, 78 transitions, 357 flow. Second operand 52 states and 4324 transitions. [2023-08-03 15:50:49,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 956 transitions, 5801 flow [2023-08-03 15:50:49,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 956 transitions, 5801 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:50:49,988 INFO L231 Difference]: Finished difference. Result has 137 places, 381 transitions, 3299 flow [2023-08-03 15:50:49,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=3299, PETRI_PLACES=137, PETRI_TRANSITIONS=381} [2023-08-03 15:50:49,989 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 88 predicate places. [2023-08-03 15:50:49,989 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 381 transitions, 3299 flow [2023-08-03 15:50:49,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 69.82352941176471) internal successors, (1187), 17 states have internal predecessors, (1187), 0 states have call successors, (0), 0 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 15:50:49,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:50:49,990 INFO L208 CegarLoopForPetriNet]: trace histogram [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 15:50:49,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 15:50:50,195 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 15:50:50,196 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:50:50,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:50:50,196 INFO L85 PathProgramCache]: Analyzing trace with hash -458159726, now seen corresponding path program 1 times [2023-08-03 15:50:50,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:50:50,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705920680] [2023-08-03 15:50:50,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:50:50,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:50:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:50:50,252 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 15:50:50,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:50:50,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705920680] [2023-08-03 15:50:50,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705920680] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:50:50,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:50:50,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:50:50,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781697326] [2023-08-03 15:50:50,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:50:50,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:50:50,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:50:50,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:50:50,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:50:50,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 217 [2023-08-03 15:50:50,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 381 transitions, 3299 flow. Second operand has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 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 15:50:50,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:50:50,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 217 [2023-08-03 15:50:50,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:50:52,478 INFO L124 PetriNetUnfolderBase]: 8541/16051 cut-off events. [2023-08-03 15:50:52,478 INFO L125 PetriNetUnfolderBase]: For 76557/76706 co-relation queries the response was YES. [2023-08-03 15:50:52,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59364 conditions, 16051 events. 8541/16051 cut-off events. For 76557/76706 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 125851 event pairs, 1016 based on Foata normal form. 361/15978 useless extension candidates. Maximal degree in co-relation 55372. Up to 4274 conditions per place. [2023-08-03 15:50:52,591 INFO L140 encePairwiseOnDemand]: 205/217 looper letters, 529 selfloop transitions, 409 changer transitions 14/1000 dead transitions. [2023-08-03 15:50:52,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 1000 transitions, 10435 flow [2023-08-03 15:50:52,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 15:50:52,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 15:50:52,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 961 transitions. [2023-08-03 15:50:52,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2023-08-03 15:50:52,596 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 961 transitions. [2023-08-03 15:50:52,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 961 transitions. [2023-08-03 15:50:52,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:50:52,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 961 transitions. [2023-08-03 15:50:52,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 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 15:50:52,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 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 15:50:52,601 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 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 15:50:52,602 INFO L175 Difference]: Start difference. First operand has 137 places, 381 transitions, 3299 flow. Second operand 9 states and 961 transitions. [2023-08-03 15:50:52,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 1000 transitions, 10435 flow [2023-08-03 15:50:53,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 1000 transitions, 9629 flow, removed 403 selfloop flow, removed 0 redundant places. [2023-08-03 15:50:53,395 INFO L231 Difference]: Finished difference. Result has 153 places, 681 transitions, 7334 flow [2023-08-03 15:50:53,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=2871, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7334, PETRI_PLACES=153, PETRI_TRANSITIONS=681} [2023-08-03 15:50:53,399 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 104 predicate places. [2023-08-03 15:50:53,399 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 681 transitions, 7334 flow [2023-08-03 15:50:53,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 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 15:50:53,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:50:53,400 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:50:53,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 15:50:53,400 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:50:53,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:50:53,401 INFO L85 PathProgramCache]: Analyzing trace with hash 705357543, now seen corresponding path program 1 times [2023-08-03 15:50:53,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:50:53,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622635471] [2023-08-03 15:50:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:50:53,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:50:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:50:53,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:50:53,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:50:53,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622635471] [2023-08-03 15:50:53,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622635471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:50:53,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:50:53,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-03 15:50:53,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357264111] [2023-08-03 15:50:53,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:50:53,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-03 15:50:53,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:50:53,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-03 15:50:53,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-03 15:50:53,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 217 [2023-08-03 15:50:53,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 681 transitions, 7334 flow. Second operand has 10 states, 10 states have (on average 84.8) internal successors, (848), 10 states have internal predecessors, (848), 0 states have call successors, (0), 0 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 15:50:53,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:50:53,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 217 [2023-08-03 15:50:53,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:50:57,617 INFO L124 PetriNetUnfolderBase]: 11906/21284 cut-off events. [2023-08-03 15:50:57,617 INFO L125 PetriNetUnfolderBase]: For 111555/111876 co-relation queries the response was YES. [2023-08-03 15:50:57,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89928 conditions, 21284 events. 11906/21284 cut-off events. For 111555/111876 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 164640 event pairs, 1057 based on Foata normal form. 399/21557 useless extension candidates. Maximal degree in co-relation 82729. Up to 5107 conditions per place. [2023-08-03 15:50:57,782 INFO L140 encePairwiseOnDemand]: 200/217 looper letters, 587 selfloop transitions, 611 changer transitions 23/1264 dead transitions. [2023-08-03 15:50:57,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1264 transitions, 15156 flow [2023-08-03 15:50:57,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-03 15:50:57,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-03 15:50:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2072 transitions. [2023-08-03 15:50:57,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340175953079179 [2023-08-03 15:50:57,796 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2072 transitions. [2023-08-03 15:50:57,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2072 transitions. [2023-08-03 15:50:57,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:50:57,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2072 transitions. [2023-08-03 15:50:57,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.18181818181819) internal successors, (2072), 22 states have internal predecessors, (2072), 0 states have call successors, (0), 0 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 15:50:57,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 217.0) internal successors, (4991), 23 states have internal predecessors, (4991), 0 states have call successors, (0), 0 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 15:50:57,817 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 217.0) internal successors, (4991), 23 states have internal predecessors, (4991), 0 states have call successors, (0), 0 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 15:50:57,817 INFO L175 Difference]: Start difference. First operand has 153 places, 681 transitions, 7334 flow. Second operand 22 states and 2072 transitions. [2023-08-03 15:50:57,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1264 transitions, 15156 flow [2023-08-03 15:50:58,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 1264 transitions, 15038 flow, removed 35 selfloop flow, removed 1 redundant places. [2023-08-03 15:50:58,533 INFO L231 Difference]: Finished difference. Result has 185 places, 872 transitions, 11951 flow [2023-08-03 15:50:58,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=7254, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=430, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=11951, PETRI_PLACES=185, PETRI_TRANSITIONS=872} [2023-08-03 15:50:58,535 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 136 predicate places. [2023-08-03 15:50:58,535 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 872 transitions, 11951 flow [2023-08-03 15:50:58,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.8) internal successors, (848), 10 states have internal predecessors, (848), 0 states have call successors, (0), 0 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 15:50:58,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:50:58,535 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:50:58,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 15:50:58,536 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:50:58,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:50:58,536 INFO L85 PathProgramCache]: Analyzing trace with hash -507818039, now seen corresponding path program 2 times [2023-08-03 15:50:58,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:50:58,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599941144] [2023-08-03 15:50:58,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:50:58,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:50:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:50:58,785 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 15:50:58,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:50:58,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599941144] [2023-08-03 15:50:58,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599941144] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:50:58,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:50:58,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-03 15:50:58,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804506960] [2023-08-03 15:50:58,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:50:58,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-03 15:50:58,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:50:58,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-03 15:50:58,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-03 15:50:59,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 217 [2023-08-03 15:50:59,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 872 transitions, 11951 flow. Second operand has 10 states, 10 states have (on average 84.8) internal successors, (848), 10 states have internal predecessors, (848), 0 states have call successors, (0), 0 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 15:50:59,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:50:59,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 217 [2023-08-03 15:50:59,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:51:03,979 INFO L124 PetriNetUnfolderBase]: 13168/23547 cut-off events. [2023-08-03 15:51:03,979 INFO L125 PetriNetUnfolderBase]: For 174782/175142 co-relation queries the response was YES. [2023-08-03 15:51:04,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114881 conditions, 23547 events. 13168/23547 cut-off events. For 174782/175142 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 184910 event pairs, 1225 based on Foata normal form. 404/23814 useless extension candidates. Maximal degree in co-relation 106909. Up to 5707 conditions per place. [2023-08-03 15:51:04,207 INFO L140 encePairwiseOnDemand]: 200/217 looper letters, 623 selfloop transitions, 716 changer transitions 23/1405 dead transitions. [2023-08-03 15:51:04,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 1405 transitions, 20163 flow [2023-08-03 15:51:04,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-03 15:51:04,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-03 15:51:04,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2068 transitions. [2023-08-03 15:51:04,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43317972350230416 [2023-08-03 15:51:04,212 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2068 transitions. [2023-08-03 15:51:04,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2068 transitions. [2023-08-03 15:51:04,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:51:04,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2068 transitions. [2023-08-03 15:51:04,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.0) internal successors, (2068), 22 states have internal predecessors, (2068), 0 states have call successors, (0), 0 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 15:51:04,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 217.0) internal successors, (4991), 23 states have internal predecessors, (4991), 0 states have call successors, (0), 0 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 15:51:04,226 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 217.0) internal successors, (4991), 23 states have internal predecessors, (4991), 0 states have call successors, (0), 0 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 15:51:04,226 INFO L175 Difference]: Start difference. First operand has 185 places, 872 transitions, 11951 flow. Second operand 22 states and 2068 transitions. [2023-08-03 15:51:04,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 1405 transitions, 20163 flow [2023-08-03 15:51:05,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 1405 transitions, 20007 flow, removed 78 selfloop flow, removed 0 redundant places. [2023-08-03 15:51:05,519 INFO L231 Difference]: Finished difference. Result has 218 places, 1016 transitions, 16855 flow [2023-08-03 15:51:05,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=11827, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=872, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=578, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=16855, PETRI_PLACES=218, PETRI_TRANSITIONS=1016} [2023-08-03 15:51:05,520 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 169 predicate places. [2023-08-03 15:51:05,520 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 1016 transitions, 16855 flow [2023-08-03 15:51:05,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.8) internal successors, (848), 10 states have internal predecessors, (848), 0 states have call successors, (0), 0 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 15:51:05,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:51:05,521 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:51:05,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 15:51:05,521 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:51:05,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:51:05,523 INFO L85 PathProgramCache]: Analyzing trace with hash 302393289, now seen corresponding path program 3 times [2023-08-03 15:51:05,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:51:05,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330549779] [2023-08-03 15:51:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:51:05,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:51:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:51:05,800 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 15:51:05,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:51:05,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330549779] [2023-08-03 15:51:05,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330549779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:51:05,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:51:05,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-03 15:51:05,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433425889] [2023-08-03 15:51:05,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:51:05,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-03 15:51:05,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:51:05,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-03 15:51:05,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-03 15:51:06,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 217 [2023-08-03 15:51:06,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 1016 transitions, 16855 flow. Second operand has 10 states, 10 states have (on average 83.8) internal successors, (838), 10 states have internal predecessors, (838), 0 states have call successors, (0), 0 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 15:51:06,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:51:06,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 217 [2023-08-03 15:51:06,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:51:13,364 INFO L124 PetriNetUnfolderBase]: 15514/27741 cut-off events. [2023-08-03 15:51:13,364 INFO L125 PetriNetUnfolderBase]: For 299094/299548 co-relation queries the response was YES. [2023-08-03 15:51:13,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153670 conditions, 27741 events. 15514/27741 cut-off events. For 299094/299548 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 222776 event pairs, 1388 based on Foata normal form. 463/28075 useless extension candidates. Maximal degree in co-relation 142583. Up to 6711 conditions per place. [2023-08-03 15:51:13,649 INFO L140 encePairwiseOnDemand]: 198/217 looper letters, 657 selfloop transitions, 1029 changer transitions 24/1753 dead transitions. [2023-08-03 15:51:13,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 1753 transitions, 29794 flow [2023-08-03 15:51:13,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-03 15:51:13,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-03 15:51:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2834 transitions. [2023-08-03 15:51:13,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42128734948714136 [2023-08-03 15:51:13,655 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2834 transitions. [2023-08-03 15:51:13,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2834 transitions. [2023-08-03 15:51:13,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:51:13,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2834 transitions. [2023-08-03 15:51:13,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 91.41935483870968) internal successors, (2834), 31 states have internal predecessors, (2834), 0 states have call successors, (0), 0 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 15:51:13,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 217.0) internal successors, (6944), 32 states have internal predecessors, (6944), 0 states have call successors, (0), 0 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 15:51:13,673 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 217.0) internal successors, (6944), 32 states have internal predecessors, (6944), 0 states have call successors, (0), 0 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 15:51:13,673 INFO L175 Difference]: Start difference. First operand has 218 places, 1016 transitions, 16855 flow. Second operand 31 states and 2834 transitions. [2023-08-03 15:51:13,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 1753 transitions, 29794 flow [2023-08-03 15:51:16,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 1753 transitions, 29509 flow, removed 110 selfloop flow, removed 1 redundant places. [2023-08-03 15:51:16,079 INFO L231 Difference]: Finished difference. Result has 264 places, 1365 transitions, 26766 flow [2023-08-03 15:51:16,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=16714, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1016, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=685, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=26766, PETRI_PLACES=264, PETRI_TRANSITIONS=1365} [2023-08-03 15:51:16,080 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 215 predicate places. [2023-08-03 15:51:16,080 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 1365 transitions, 26766 flow [2023-08-03 15:51:16,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 83.8) internal successors, (838), 10 states have internal predecessors, (838), 0 states have call successors, (0), 0 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 15:51:16,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:51:16,081 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, 1, 1, 1] [2023-08-03 15:51:16,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 15:51:16,081 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:51:16,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:51:16,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1830682607, now seen corresponding path program 1 times [2023-08-03 15:51:16,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:51:16,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586663455] [2023-08-03 15:51:16,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:51:16,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:51:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:51:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:51:16,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:51:16,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586663455] [2023-08-03 15:51:16,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586663455] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:51:16,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405433537] [2023-08-03 15:51:16,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:51:16,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:51:16,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:51:16,338 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 15:51:16,341 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 15:51:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:51:16,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-03 15:51:16,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:51:16,478 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-03 15:51:16,574 INFO L322 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-03 15:51:16,574 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-08-03 15:51:16,610 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 15:51:16,610 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 23 [2023-08-03 15:51:16,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:51:16,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:51:16,805 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 15:51:16,805 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-08-03 15:51:16,812 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 15:51:16,812 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-08-03 15:51:16,828 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 67 [2023-08-03 15:51:16,832 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2023-08-03 15:51:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:51:16,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405433537] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:51:16,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:51:16,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2023-08-03 15:51:16,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692767213] [2023-08-03 15:51:16,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:51:16,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-03 15:51:16,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:51:16,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-03 15:51:16,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=312, Unknown=5, NotChecked=0, Total=380 [2023-08-03 15:51:17,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 217 [2023-08-03 15:51:17,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 1365 transitions, 26766 flow. Second operand has 20 states, 20 states have (on average 70.15) internal successors, (1403), 20 states have internal predecessors, (1403), 0 states have call successors, (0), 0 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 15:51:17,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:51:17,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 217 [2023-08-03 15:51:17,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:51:49,638 INFO L124 PetriNetUnfolderBase]: 52232/85782 cut-off events. [2023-08-03 15:51:49,638 INFO L125 PetriNetUnfolderBase]: For 1108379/1108379 co-relation queries the response was YES. [2023-08-03 15:51:50,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501855 conditions, 85782 events. 52232/85782 cut-off events. For 1108379/1108379 co-relation queries the response was YES. Maximal size of possible extension queue 1735. Compared 706316 event pairs, 6700 based on Foata normal form. 894/86675 useless extension candidates. Maximal degree in co-relation 500252. Up to 20884 conditions per place. [2023-08-03 15:51:51,044 INFO L140 encePairwiseOnDemand]: 196/217 looper letters, 1594 selfloop transitions, 2512 changer transitions 31/4142 dead transitions. [2023-08-03 15:51:51,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 4142 transitions, 78982 flow [2023-08-03 15:51:51,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-08-03 15:51:51,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2023-08-03 15:51:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 6620 transitions. [2023-08-03 15:51:51,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720355175901989 [2023-08-03 15:51:51,055 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 6620 transitions. [2023-08-03 15:51:51,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 6620 transitions. [2023-08-03 15:51:51,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:51:51,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 6620 transitions. [2023-08-03 15:51:51,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 80.73170731707317) internal successors, (6620), 82 states have internal predecessors, (6620), 0 states have call successors, (0), 0 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 15:51:51,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 217.0) internal successors, (18011), 83 states have internal predecessors, (18011), 0 states have call successors, (0), 0 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 15:51:51,093 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 217.0) internal successors, (18011), 83 states have internal predecessors, (18011), 0 states have call successors, (0), 0 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 15:51:51,093 INFO L175 Difference]: Start difference. First operand has 264 places, 1365 transitions, 26766 flow. Second operand 82 states and 6620 transitions. [2023-08-03 15:51:51,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 4142 transitions, 78982 flow [2023-08-03 15:52:09,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 4142 transitions, 78517 flow, removed 203 selfloop flow, removed 2 redundant places. [2023-08-03 15:52:09,509 INFO L231 Difference]: Finished difference. Result has 391 places, 2975 transitions, 68381 flow [2023-08-03 15:52:09,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=26443, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1053, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=68381, PETRI_PLACES=391, PETRI_TRANSITIONS=2975} [2023-08-03 15:52:09,511 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 342 predicate places. [2023-08-03 15:52:09,511 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 2975 transitions, 68381 flow [2023-08-03 15:52:09,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 70.15) internal successors, (1403), 20 states have internal predecessors, (1403), 0 states have call successors, (0), 0 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 15:52:09,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:52:09,512 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, 1, 1, 1] [2023-08-03 15:52:09,516 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 15:52:09,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:52:09,713 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:52:09,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:52:09,713 INFO L85 PathProgramCache]: Analyzing trace with hash -358606830, now seen corresponding path program 1 times [2023-08-03 15:52:09,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:52:09,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242891804] [2023-08-03 15:52:09,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:52:09,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:52:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:52:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 15:52:09,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:52:09,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242891804] [2023-08-03 15:52:09,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242891804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:52:09,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:52:09,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-03 15:52:09,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400909747] [2023-08-03 15:52:09,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:52:09,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-03 15:52:09,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:52:09,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-03 15:52:09,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-03 15:52:10,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 217 [2023-08-03 15:52:10,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 2975 transitions, 68381 flow. Second operand has 10 states, 10 states have (on average 87.8) internal successors, (878), 10 states have internal predecessors, (878), 0 states have call successors, (0), 0 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 15:52:10,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:52:10,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 217 [2023-08-03 15:52:10,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:52:44,613 INFO L124 PetriNetUnfolderBase]: 28371/53985 cut-off events. [2023-08-03 15:52:44,613 INFO L125 PetriNetUnfolderBase]: For 1197739/1199725 co-relation queries the response was YES. [2023-08-03 15:52:45,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384880 conditions, 53985 events. 28371/53985 cut-off events. For 1197739/1199725 co-relation queries the response was YES. Maximal size of possible extension queue 1371. Compared 504890 event pairs, 2685 based on Foata normal form. 1509/54967 useless extension candidates. Maximal degree in co-relation 384483. Up to 13638 conditions per place. [2023-08-03 15:52:45,716 INFO L140 encePairwiseOnDemand]: 201/217 looper letters, 1303 selfloop transitions, 2150 changer transitions 17/3620 dead transitions. [2023-08-03 15:52:45,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 3620 transitions, 85312 flow [2023-08-03 15:52:45,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-03 15:52:45,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-03 15:52:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1941 transitions. [2023-08-03 15:52:45,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44723502304147467 [2023-08-03 15:52:45,719 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1941 transitions. [2023-08-03 15:52:45,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1941 transitions. [2023-08-03 15:52:45,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:52:45,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1941 transitions. [2023-08-03 15:52:45,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 97.05) internal successors, (1941), 20 states have internal predecessors, (1941), 0 states have call successors, (0), 0 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 15:52:45,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 217.0) internal successors, (4557), 21 states have internal predecessors, (4557), 0 states have call successors, (0), 0 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 15:52:45,727 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 217.0) internal successors, (4557), 21 states have internal predecessors, (4557), 0 states have call successors, (0), 0 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 15:52:45,728 INFO L175 Difference]: Start difference. First operand has 391 places, 2975 transitions, 68381 flow. Second operand 20 states and 1941 transitions. [2023-08-03 15:52:45,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 3620 transitions, 85312 flow [2023-08-03 15:53:02,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 3620 transitions, 83837 flow, removed 603 selfloop flow, removed 1 redundant places. [2023-08-03 15:53:02,453 INFO L231 Difference]: Finished difference. Result has 418 places, 3058 transitions, 77853 flow [2023-08-03 15:53:02,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=67411, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2975, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2071, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=875, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=77853, PETRI_PLACES=418, PETRI_TRANSITIONS=3058} [2023-08-03 15:53:02,456 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 369 predicate places. [2023-08-03 15:53:02,456 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 3058 transitions, 77853 flow [2023-08-03 15:53:02,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.8) internal successors, (878), 10 states have internal predecessors, (878), 0 states have call successors, (0), 0 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 15:53:02,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:53:02,457 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, 1, 1, 1] [2023-08-03 15:53:02,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 15:53:02,457 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:53:02,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:53:02,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1749493866, now seen corresponding path program 2 times [2023-08-03 15:53:02,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:53:02,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328731157] [2023-08-03 15:53:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:02,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:53:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:53:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 15:53:02,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:53:02,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328731157] [2023-08-03 15:53:02,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328731157] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:53:02,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779819965] [2023-08-03 15:53:02,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 15:53:02,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:53:02,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:53:02,682 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 15:53:02,685 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 15:53:02,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 15:53:02,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 15:53:02,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-03 15:53:02,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:53:02,814 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-03 15:53:02,903 INFO L322 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-03 15:53:02,904 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-08-03 15:53:02,938 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 15:53:02,938 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 23 [2023-08-03 15:53:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 15:53:02,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:53:03,003 WARN L839 $PredicateComparison]: unable to prove that (and (or (forall ((|v_thr1Thread1of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_9| Int) (v_ArrVal_280 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_9| v_ArrVal_280) |c_thr1Thread2of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread2of2ForFork0_push_~#newTop~0#1.offset|) 0))) (<= c_~next_alloc_idx~0 64)) (or (< 64 c_~next_alloc_idx~0) (forall ((|v_thr1Thread1of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_9| Int)) (not (= (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_9| (store (select |c_#memory_int| |v_thr1Thread1of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_9|) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.offset| c_~next_alloc_idx~0)) |c_thr1Thread2of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread2of2ForFork0_push_~#newTop~0#1.offset|) 0))))) is different from false [2023-08-03 15:53:03,022 WARN L839 $PredicateComparison]: unable to prove that (and (or (forall ((|v_thr1Thread1of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_9| Int) (v_ArrVal_280 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_9| v_ArrVal_280) |c_thr1Thread2of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread2of2ForFork0_push_~#newTop~0#1.offset|) 0))) (<= c_~next_alloc_idx~0 64)) (or (< 64 c_~next_alloc_idx~0) (forall ((|v_thr1Thread1of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_9| Int)) (not (= (select (select (store |c_#memory_int| |v_thr1Thread1of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_9| (store (select |c_#memory_int| |v_thr1Thread1of2ForFork0___VERIFIER_atomic_index_malloc_~curr_alloc_idx#1.base_9|) 0 c_~next_alloc_idx~0)) |c_thr1Thread2of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread2of2ForFork0_push_~#newTop~0#1.offset|) 0))))) is different from false [2023-08-03 15:53:03,103 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 15:53:03,104 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-08-03 15:53:03,112 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 15:53:03,112 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-08-03 15:53:03,149 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 93 [2023-08-03 15:53:03,157 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-08-03 15:53:03,160 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-08-03 15:53:03,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2023-08-03 15:53:03,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779819965] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:53:03,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:53:03,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-08-03 15:53:03,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920528576] [2023-08-03 15:53:03,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:53:03,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-03 15:53:03,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:53:03,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-03 15:53:03,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=218, Unknown=2, NotChecked=62, Total=342 [2023-08-03 15:53:03,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 217 [2023-08-03 15:53:03,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 3058 transitions, 77853 flow. Second operand has 19 states, 19 states have (on average 76.0) internal successors, (1444), 19 states have internal predecessors, (1444), 0 states have call successors, (0), 0 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 15:53:03,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:53:03,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 217 [2023-08-03 15:53:03,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:54:18,570 INFO L124 PetriNetUnfolderBase]: 62034/104962 cut-off events. [2023-08-03 15:54:18,570 INFO L125 PetriNetUnfolderBase]: For 2473957/2474114 co-relation queries the response was YES. [2023-08-03 15:54:21,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747830 conditions, 104962 events. 62034/104962 cut-off events. For 2473957/2474114 co-relation queries the response was YES. Maximal size of possible extension queue 2213. Compared 921540 event pairs, 4511 based on Foata normal form. 1323/106197 useless extension candidates. Maximal degree in co-relation 746081. Up to 24243 conditions per place. [2023-08-03 15:54:22,143 INFO L140 encePairwiseOnDemand]: 184/217 looper letters, 2198 selfloop transitions, 3164 changer transitions 60/5434 dead transitions. [2023-08-03 15:54:22,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 5434 transitions, 129330 flow [2023-08-03 15:54:22,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-08-03 15:54:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-08-03 15:54:22,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 5177 transitions. [2023-08-03 15:54:22,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4043583535108959 [2023-08-03 15:54:22,179 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 5177 transitions. [2023-08-03 15:54:22,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 5177 transitions. [2023-08-03 15:54:22,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:54:22,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 5177 transitions. [2023-08-03 15:54:22,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 87.7457627118644) internal successors, (5177), 59 states have internal predecessors, (5177), 0 states have call successors, (0), 0 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 15:54:22,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 217.0) internal successors, (13020), 60 states have internal predecessors, (13020), 0 states have call successors, (0), 0 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 15:54:22,213 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 217.0) internal successors, (13020), 60 states have internal predecessors, (13020), 0 states have call successors, (0), 0 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 15:54:22,213 INFO L175 Difference]: Start difference. First operand has 418 places, 3058 transitions, 77853 flow. Second operand 59 states and 5177 transitions. [2023-08-03 15:54:22,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 5434 transitions, 129330 flow [2023-08-03 15:55:17,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 5434 transitions, 129166 flow, removed 61 selfloop flow, removed 2 redundant places. [2023-08-03 15:55:18,097 INFO L231 Difference]: Finished difference. Result has 505 places, 3979 transitions, 113408 flow [2023-08-03 15:55:18,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=77725, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3058, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=113408, PETRI_PLACES=505, PETRI_TRANSITIONS=3979} [2023-08-03 15:55:18,100 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 456 predicate places. [2023-08-03 15:55:18,100 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 3979 transitions, 113408 flow [2023-08-03 15:55:18,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 76.0) internal successors, (1444), 19 states have internal predecessors, (1444), 0 states have call successors, (0), 0 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 15:55:18,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:55:18,101 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, 1, 1, 1] [2023-08-03 15:55:18,108 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 15:55:18,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:55:18,305 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:55:18,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:55:18,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1311202741, now seen corresponding path program 2 times [2023-08-03 15:55:18,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:55:18,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189250089] [2023-08-03 15:55:18,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:55:18,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:55:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:55:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:55:18,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:55:18,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189250089] [2023-08-03 15:55:18,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189250089] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:55:18,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199358892] [2023-08-03 15:55:18,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 15:55:18,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:55:18,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:55:18,654 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 15:55:18,656 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 15:55:18,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 15:55:18,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 15:55:18,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-03 15:55:18,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:55:18,756 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-03 15:55:18,784 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-03 15:55:18,784 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-03 15:55:18,825 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-03 15:55:18,893 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 15:55:18,992 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-03 15:55:18,993 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-03 15:55:19,042 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 15:55:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:55:19,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:55:19,266 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 15:55:19,267 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-08-03 15:55:19,277 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 15:55:19,277 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-08-03 15:55:19,309 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 177 [2023-08-03 15:55:19,326 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 111 [2023-08-03 15:55:19,331 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 109 [2023-08-03 15:55:19,335 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 107 [2023-08-03 15:55:19,339 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 103 [2023-08-03 15:55:19,346 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 106 [2023-08-03 15:55:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:55:19,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199358892] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:55:19,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:55:19,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-08-03 15:55:19,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044512355] [2023-08-03 15:55:19,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:55:19,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-03 15:55:19,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:55:19,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-03 15:55:19,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=423, Unknown=4, NotChecked=0, Total=506 [2023-08-03 15:55:19,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 217 [2023-08-03 15:55:19,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 3979 transitions, 113408 flow. Second operand has 23 states, 23 states have (on average 67.8695652173913) internal successors, (1561), 23 states have internal predecessors, (1561), 0 states have call successors, (0), 0 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 15:55:19,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:55:19,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 217 [2023-08-03 15:55:19,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:55:29,338 WARN L233 SmtUtils]: Spent 7.51s on a formula simplification. DAG size of input: 76 DAG size of output: 50 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-03 15:55:55,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:56:01,652 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((|v_thr1Thread2of2ForFork0_push_~#newTop~0#1.base_56| Int)) (or (not (= (select |c_#valid| |v_thr1Thread2of2ForFork0_push_~#newTop~0#1.base_56|) 0)) (forall ((v_ArrVal_332 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |v_thr1Thread2of2ForFork0_push_~#newTop~0#1.base_56| v_ArrVal_332) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.offset|) 0))))) (forall ((|v_thr1Thread2of2ForFork0_push_~#newTop~0#1.base_56| Int) (v_ArrVal_331 (Array Int Int)) (v_ArrVal_332 (Array Int Int))) (or (not (= (select |c_#valid| |v_thr1Thread2of2ForFork0_push_~#newTop~0#1.base_56|) 0)) (not (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_331) |v_thr1Thread2of2ForFork0_push_~#newTop~0#1.base_56| v_ArrVal_332) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.offset|) 0)))) (forall ((v_ArrVal_332 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_thr1Thread2of2ForFork0_push_~#newTop~0#1.base| v_ArrVal_332) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.offset|) 0))) (= c_~top~0 1)) is different from false [2023-08-03 15:56:14,105 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_332 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_thr1Thread2of2ForFork0_push_~#newTop~0#1.base| v_ArrVal_332) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.offset|) 0))) (not (= c_~top~0 0))) is different from false [2023-08-03 15:56:26,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 15:56:52,764 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_332 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_thr1Thread2of2ForFork0_push_~#newTop~0#1.base| v_ArrVal_332) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of2ForFork0_push_~#newTop~0#1.offset|) 0))) (= c_~top~0 1) (not (= |c_thr1Thread1of2ForFork0_push_#t~mem6#1| 0))) is different from false [2023-08-03 15:59:21,660 INFO L124 PetriNetUnfolderBase]: 102262/169820 cut-off events. [2023-08-03 15:59:21,660 INFO L125 PetriNetUnfolderBase]: For 5777351/5777351 co-relation queries the response was YES. [2023-08-03 15:59:25,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1573481 conditions, 169820 events. 102262/169820 cut-off events. For 5777351/5777351 co-relation queries the response was YES. Maximal size of possible extension queue 3563. Compared 1550265 event pairs, 11979 based on Foata normal form. 329/170149 useless extension candidates. Maximal degree in co-relation 1570046. Up to 49899 conditions per place. [2023-08-03 15:59:26,940 INFO L140 encePairwiseOnDemand]: 183/217 looper letters, 3325 selfloop transitions, 5823 changer transitions 35/9188 dead transitions. [2023-08-03 15:59:26,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 9188 transitions, 261639 flow [2023-08-03 15:59:26,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-08-03 15:59:26,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2023-08-03 15:59:26,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 9288 transitions. [2023-08-03 15:59:26,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566820276497696 [2023-08-03 15:59:26,951 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 9288 transitions. [2023-08-03 15:59:26,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 9288 transitions. [2023-08-03 15:59:26,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:59:26,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 9288 transitions. [2023-08-03 15:59:26,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 121 states, 120 states have (on average 77.4) internal successors, (9288), 120 states have internal predecessors, (9288), 0 states have call successors, (0), 0 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 15:59:26,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 121 states, 121 states have (on average 217.0) internal successors, (26257), 121 states have internal predecessors, (26257), 0 states have call successors, (0), 0 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 15:59:26,991 INFO L81 ComplementDD]: Finished complementDD. Result has 121 states, 121 states have (on average 217.0) internal successors, (26257), 121 states have internal predecessors, (26257), 0 states have call successors, (0), 0 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 15:59:26,991 INFO L175 Difference]: Start difference. First operand has 505 places, 3979 transitions, 113408 flow. Second operand 120 states and 9288 transitions. [2023-08-03 15:59:26,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 9188 transitions, 261639 flow [2023-08-03 16:03:04,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 9188 transitions, 258427 flow, removed 1606 selfloop flow, removed 0 redundant places. [2023-08-03 16:03:04,855 INFO L231 Difference]: Finished difference. Result has 692 places, 7284 transitions, 228917 flow [2023-08-03 16:03:04,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=111420, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3979, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2991, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=120, PETRI_FLOW=228917, PETRI_PLACES=692, PETRI_TRANSITIONS=7284} [2023-08-03 16:03:04,860 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 643 predicate places. [2023-08-03 16:03:04,860 INFO L495 AbstractCegarLoop]: Abstraction has has 692 places, 7284 transitions, 228917 flow [2023-08-03 16:03:04,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 67.8695652173913) internal successors, (1561), 23 states have internal predecessors, (1561), 0 states have call successors, (0), 0 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 16:03:04,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:04,860 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:03:04,870 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 16:03:05,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 16:03:05,068 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 16:03:05,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:05,068 INFO L85 PathProgramCache]: Analyzing trace with hash 722729038, now seen corresponding path program 1 times [2023-08-03 16:03:05,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:05,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989022943] [2023-08-03 16:03:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:05,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 16:03:05,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:05,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989022943] [2023-08-03 16:03:05,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989022943] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:03:05,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959969589] [2023-08-03 16:03:05,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:05,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:05,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:05,442 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 16:03:05,449 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 16:03:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:05,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 16:03:05,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:03:05,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 16:03:05,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:03:05,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959969589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:03:05,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:03:05,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 12 [2023-08-03 16:03:05,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627903974] [2023-08-03 16:03:05,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:03:05,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:03:05,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:05,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:03:05,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-08-03 16:03:05,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 217 [2023-08-03 16:03:05,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 7284 transitions, 228917 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 16:03:05,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:05,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 217 [2023-08-03 16:03:05,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-03 16:03:34,429 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 16:03:34,430 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 16:03:34,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:03:34,584 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 16:03:34,589 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 16:03:34,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:34,789 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (3states, 103/217 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 136857 conditions, 13675 events (6170/13674 cut-off events. For 622441/624916 co-relation queries the response was YES. Maximal size of possible extension queue 1055. Compared 144542 event pairs, 1282 based on Foata normal form. 794/15056 useless extension candidates. Maximal degree in co-relation 136622. Up to 5714 conditions per place.). [2023-08-03 16:03:34,789 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 16:03:34,789 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 16:03:34,790 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 16:03:34,790 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 16:03:34,792 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:03:34,792 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:03:34,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:03:34 BasicIcfg [2023-08-03 16:03:34,795 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:03:34,795 INFO L158 Benchmark]: Toolchain (without parser) took 775940.74ms. Allocated memory was 457.2MB in the beginning and 13.4GB in the end (delta: 12.9GB). Free memory was 408.7MB in the beginning and 7.5GB in the end (delta: -7.0GB). Peak memory consumption was 9.3GB. Max. memory is 16.0GB. [2023-08-03 16:03:34,795 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 331.4MB. Free memory was 284.5MB in the beginning and 284.3MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:03:34,796 INFO L158 Benchmark]: CACSL2BoogieTranslator took 457.47ms. Allocated memory is still 457.2MB. Free memory was 408.7MB in the beginning and 388.9MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 16:03:34,796 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.98ms. Allocated memory is still 457.2MB. Free memory was 388.9MB in the beginning and 386.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:03:34,796 INFO L158 Benchmark]: Boogie Preprocessor took 30.22ms. Allocated memory is still 457.2MB. Free memory was 386.8MB in the beginning and 385.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:03:34,796 INFO L158 Benchmark]: RCFGBuilder took 409.04ms. Allocated memory is still 457.2MB. Free memory was 385.5MB in the beginning and 368.3MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-03 16:03:34,797 INFO L158 Benchmark]: TraceAbstraction took 774995.82ms. Allocated memory was 457.2MB in the beginning and 13.4GB in the end (delta: 12.9GB). Free memory was 367.9MB in the beginning and 7.5GB in the end (delta: -7.1GB). Peak memory consumption was 9.3GB. Max. memory is 16.0GB. [2023-08-03 16:03:34,798 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 331.4MB. Free memory was 284.5MB in the beginning and 284.3MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 457.47ms. Allocated memory is still 457.2MB. Free memory was 408.7MB in the beginning and 388.9MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.98ms. Allocated memory is still 457.2MB. Free memory was 388.9MB in the beginning and 386.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.22ms. Allocated memory is still 457.2MB. Free memory was 386.8MB in the beginning and 385.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 409.04ms. Allocated memory is still 457.2MB. Free memory was 385.5MB in the beginning and 368.3MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 774995.82ms. Allocated memory was 457.2MB in the beginning and 13.4GB in the end (delta: 12.9GB). Free memory was 367.9MB in the beginning and 7.5GB in the end (delta: -7.1GB). Peak memory consumption was 9.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 253]: Unsoundness Warning unspecified type, defaulting to int C: short [253] - GenericResultAtLocation [Line: 253]: Unsoundness Warning unspecified type, defaulting to int C: short [253] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 74 PlacesBefore, 21 PlacesAfterwards, 77 TransitionsBefore, 20 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 66 TotalNumberOfCompositions, 1834 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1328, independent: 1230, independent conditional: 0, independent unconditional: 1230, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 753, independent: 731, independent conditional: 0, independent unconditional: 731, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1328, independent: 499, independent conditional: 0, independent unconditional: 499, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 753, unknown conditional: 0, unknown unconditional: 753] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 117 PlacesBefore, 49 PlacesAfterwards, 123 TransitionsBefore, 48 TransitionsAfterwards, 7020 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 7 ChoiceCompositions, 94 TotalNumberOfCompositions, 16748 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7883, independent: 7536, independent conditional: 0, independent unconditional: 7536, dependent: 347, dependent conditional: 0, dependent unconditional: 347, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3715, independent: 3651, independent conditional: 0, independent unconditional: 3651, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7883, independent: 3885, independent conditional: 0, independent unconditional: 3885, dependent: 283, dependent conditional: 0, dependent unconditional: 283, unknown: 3715, unknown conditional: 0, unknown unconditional: 3715] , Statistics on independence cache: Total cache size (in pairs): 381, Positive cache size: 351, Positive conditional cache size: 0, Positive unconditional cache size: 351, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 722]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (3states, 103/217 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 136857 conditions, 13675 events (6170/13674 cut-off events. For 622441/624916 co-relation queries the response was YES. Maximal size of possible extension queue 1055. Compared 144542 event pairs, 1282 based on Foata normal form. 794/15056 useless extension candidates. Maximal degree in co-relation 136622. Up to 5714 conditions per place.). - TimeoutResultAtElement [Line: 728]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (3states, 103/217 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 136857 conditions, 13675 events (6170/13674 cut-off events. For 622441/624916 co-relation queries the response was YES. Maximal size of possible extension queue 1055. Compared 144542 event pairs, 1282 based on Foata normal form. 794/15056 useless extension candidates. Maximal degree in co-relation 136622. Up to 5714 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 113 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: 1.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 154 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 773.2s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 764.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 341 mSolverCounterUnknown, 5273 SdHoareTripleChecker+Valid, 21.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4975 mSDsluCounter, 4432 SdHoareTripleChecker+Invalid, 19.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2289 IncrementalHoareTripleChecker+Unchecked, 4208 mSDsCounter, 482 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19508 IncrementalHoareTripleChecker+Invalid, 22620 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 482 mSolverCounterUnsat, 224 mSDtfsCounter, 19508 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 691 GetRequests, 238 SyntacticMatches, 5 SemanticMatches, 448 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 11069 ImplicationChecksByTransitivity, 34.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=228917occurred in iteration=12, InterpolantAutomatonStates: 434, 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, 0.2s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 493 NumberOfCodeBlocks, 493 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 582 ConstructedInterpolants, 70 QuantifiedInterpolants, 6331 SizeOfPredicates, 52 NumberOfNonLiveVariables, 1109 ConjunctsInSsa, 140 ConjunctsInUnsatCore, 23 InterpolantComputations, 9 PerfectInterpolantSequences, 53/97 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown