/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 PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_20-publish-regression_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:31:47,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:31:47,545 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:31:47,552 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:31:47,552 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:31:47,553 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:31:47,553 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:31:47,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:31:47,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:31:47,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:31:47,591 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:31:47,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:31:47,592 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:31:47,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:31:47,593 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:31:47,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:31:47,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:31:47,594 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:31:47,594 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:31:47,594 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:31:47,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:31:47,595 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:31:47,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:31:47,595 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:31:47,597 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:31:47,597 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:31:47,597 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:31:47,598 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:31:47,598 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:31:47,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:31:47,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:31:47,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:31:47,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:31:47,600 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:31:47,600 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:31:47,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:31:47,600 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:31:47,600 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:31:47,601 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:31:47,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:31:47,601 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:31:47,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:31:47,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:31:47,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:31:47,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:31:47,849 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:31:47,850 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:31:47,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_20-publish-regression_true_bound2.i [2023-08-04 04:31:49,045 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:31:49,238 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:31:49,239 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_20-publish-regression_true_bound2.i [2023-08-04 04:31:49,254 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c21f6953/6acf150044bf4dc99c7a8947deb1d04e/FLAGd81af4b06 [2023-08-04 04:31:49,266 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c21f6953/6acf150044bf4dc99c7a8947deb1d04e [2023-08-04 04:31:49,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:31:49,269 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:31:49,270 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:31:49,271 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:31:49,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:31:49,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:31:49" (1/1) ... [2023-08-04 04:31:49,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53db0fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:49, skipping insertion in model container [2023-08-04 04:31:49,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:31:49" (1/1) ... [2023-08-04 04:31:49,322 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:31:49,457 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_20-publish-regression_true_bound2.i[1095,1108] [2023-08-04 04:31:49,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:31:49,611 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:31:49,621 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_20-publish-regression_true_bound2.i[1095,1108] [2023-08-04 04:31:49,633 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-04 04:31:49,635 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-04 04:31:49,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:31:49,680 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:31:49,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:49 WrapperNode [2023-08-04 04:31:49,681 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:31:49,682 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:31:49,682 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:31:49,682 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:31:49,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:49" (1/1) ... [2023-08-04 04:31:49,696 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:49" (1/1) ... [2023-08-04 04:31:49,714 INFO L138 Inliner]: procedures = 162, calls = 31, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 91 [2023-08-04 04:31:49,715 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:31:49,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:31:49,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:31:49,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:31:49,722 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:49" (1/1) ... [2023-08-04 04:31:49,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:49" (1/1) ... [2023-08-04 04:31:49,726 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:49" (1/1) ... [2023-08-04 04:31:49,727 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:49" (1/1) ... [2023-08-04 04:31:49,732 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:49" (1/1) ... [2023-08-04 04:31:49,734 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:49" (1/1) ... [2023-08-04 04:31:49,735 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:49" (1/1) ... [2023-08-04 04:31:49,738 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:49" (1/1) ... [2023-08-04 04:31:49,740 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:31:49,752 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:31:49,752 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:31:49,752 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:31:49,753 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:49" (1/1) ... [2023-08-04 04:31:49,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:31:49,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:31:49,788 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) [2023-08-04 04:31:49,798 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 [2023-08-04 04:31:49,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:31:49,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:31:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:31:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:31:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:31:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-04 04:31:49,822 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-04 04:31:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:31:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:31:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:31:49,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:31:49,824 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:31:49,934 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:31:49,936 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:31:50,184 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:31:50,194 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:31:50,195 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-04 04:31:50,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:31:50 BoogieIcfgContainer [2023-08-04 04:31:50,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:31:50,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:31:50,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:31:50,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:31:50,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:31:49" (1/3) ... [2023-08-04 04:31:50,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5635dbf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:31:50, skipping insertion in model container [2023-08-04 04:31:50,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:49" (2/3) ... [2023-08-04 04:31:50,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5635dbf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:31:50, skipping insertion in model container [2023-08-04 04:31:50,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:31:50" (3/3) ... [2023-08-04 04:31:50,206 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_20-publish-regression_true_bound2.i [2023-08-04 04:31:50,215 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:31:50,222 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:31:50,222 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-04 04:31:50,222 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:31:50,269 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-04 04:31:50,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 95 transitions, 198 flow [2023-08-04 04:31:50,343 INFO L124 PetriNetUnfolderBase]: 9/122 cut-off events. [2023-08-04 04:31:50,344 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2023-08-04 04:31:50,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 122 events. 9/122 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 197 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2023-08-04 04:31:50,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 95 transitions, 198 flow [2023-08-04 04:31:50,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 90 transitions, 185 flow [2023-08-04 04:31:50,356 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:31:50,364 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 90 transitions, 185 flow [2023-08-04 04:31:50,367 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 90 transitions, 185 flow [2023-08-04 04:31:50,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 90 transitions, 185 flow [2023-08-04 04:31:50,392 INFO L124 PetriNetUnfolderBase]: 8/117 cut-off events. [2023-08-04 04:31:50,392 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:31:50,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 117 events. 8/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 194 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2023-08-04 04:31:50,395 INFO L119 LiptonReduction]: Number of co-enabled transitions 1452 [2023-08-04 04:31:53,079 INFO L134 LiptonReduction]: Checked pairs total: 2847 [2023-08-04 04:31:53,079 INFO L136 LiptonReduction]: Total number of compositions: 89 [2023-08-04 04:31:53,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:31:53,098 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;@25e29c91, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:31:53,098 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 04:31:53,100 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:31:53,100 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-04 04:31:53,100 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:31:53,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:31:53,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-04 04:31:53,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:31:53,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:31:53,105 INFO L85 PathProgramCache]: Analyzing trace with hash 367, now seen corresponding path program 1 times [2023-08-04 04:31:53,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:31:53,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461957387] [2023-08-04 04:31:53,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:31:53,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:31:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:31:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:31:53,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:31:53,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461957387] [2023-08-04 04:31:53,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461957387] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:31:53,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:31:53,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-04 04:31:53,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891314426] [2023-08-04 04:31:53,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:31:53,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-04 04:31:53,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:31:53,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-04 04:31:53,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-04 04:31:53,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 184 [2023-08-04 04:31:53,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 22 transitions, 49 flow. Second operand has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:53,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:31:53,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 184 [2023-08-04 04:31:53,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:31:53,300 INFO L124 PetriNetUnfolderBase]: 42/127 cut-off events. [2023-08-04 04:31:53,300 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:31:53,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 127 events. 42/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 450 event pairs, 42 based on Foata normal form. 7/102 useless extension candidates. Maximal degree in co-relation 215. Up to 105 conditions per place. [2023-08-04 04:31:53,302 INFO L140 encePairwiseOnDemand]: 181/184 looper letters, 15 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-04 04:31:53,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 73 flow [2023-08-04 04:31:53,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-04 04:31:53,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-04 04:31:53,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 188 transitions. [2023-08-04 04:31:53,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2023-08-04 04:31:53,314 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 188 transitions. [2023-08-04 04:31:53,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 188 transitions. [2023-08-04 04:31:53,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:31:53,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 188 transitions. [2023-08-04 04:31:53,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 94.0) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:53,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:53,323 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:53,324 INFO L175 Difference]: Start difference. First operand has 24 places, 22 transitions, 49 flow. Second operand 2 states and 188 transitions. [2023-08-04 04:31:53,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 73 flow [2023-08-04 04:31:53,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 73 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:31:53,328 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 43 flow [2023-08-04 04:31:53,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=43, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-08-04 04:31:53,332 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2023-08-04 04:31:53,332 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 43 flow [2023-08-04 04:31:53,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:53,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:31:53,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-04 04:31:53,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:31:53,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:31:53,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:31:53,334 INFO L85 PathProgramCache]: Analyzing trace with hash 360968, now seen corresponding path program 1 times [2023-08-04 04:31:53,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:31:53,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227102393] [2023-08-04 04:31:53,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:31:53,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:31:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:31:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:31:53,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:31:53,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227102393] [2023-08-04 04:31:53,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227102393] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:31:53,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:31:53,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:31:53,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136780042] [2023-08-04 04:31:53,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:31:53,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:31:53,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:31:53,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:31:53,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:31:53,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 184 [2023-08-04 04:31:53,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:53,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:31:53,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 184 [2023-08-04 04:31:53,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:31:53,569 INFO L124 PetriNetUnfolderBase]: 42/115 cut-off events. [2023-08-04 04:31:53,569 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:31:53,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 115 events. 42/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 478 event pairs, 25 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 223. Up to 91 conditions per place. [2023-08-04 04:31:53,571 INFO L140 encePairwiseOnDemand]: 181/184 looper letters, 21 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-04 04:31:53,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 105 flow [2023-08-04 04:31:53,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:31:53,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:31:53,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2023-08-04 04:31:53,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483695652173913 [2023-08-04 04:31:53,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2023-08-04 04:31:53,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2023-08-04 04:31:53,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:31:53,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2023-08-04 04:31:53,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:53,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:53,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:53,585 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 43 flow. Second operand 3 states and 267 transitions. [2023-08-04 04:31:53,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 105 flow [2023-08-04 04:31:53,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 105 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:31:53,587 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 51 flow [2023-08-04 04:31:53,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2023-08-04 04:31:53,589 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2023-08-04 04:31:53,591 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 51 flow [2023-08-04 04:31:53,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:53,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:31:53,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 04:31:53,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 04:31:53,597 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:31:53,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:31:53,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2104384075, now seen corresponding path program 1 times [2023-08-04 04:31:53,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:31:53,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094830344] [2023-08-04 04:31:53,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:31:53,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:31:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:31:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:31:53,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:31:53,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094830344] [2023-08-04 04:31:53,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094830344] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:31:53,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048273055] [2023-08-04 04:31:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:31:53,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:31:53,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:31:53,724 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) [2023-08-04 04:31:53,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:31:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:31:53,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:31:53,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:31:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:31:53,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:31:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:31:53,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048273055] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:31:53,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:31:53,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:31:53,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607817601] [2023-08-04 04:31:53,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:31:53,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:31:53,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:31:53,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:31:53,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:31:53,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 184 [2023-08-04 04:31:53,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:53,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:31:53,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 184 [2023-08-04 04:31:53,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:31:53,893 INFO L124 PetriNetUnfolderBase]: 14/51 cut-off events. [2023-08-04 04:31:53,893 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-04 04:31:53,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 51 events. 14/51 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 135 event pairs, 5 based on Foata normal form. 8/52 useless extension candidates. Maximal degree in co-relation 116. Up to 30 conditions per place. [2023-08-04 04:31:53,894 INFO L140 encePairwiseOnDemand]: 181/184 looper letters, 9 selfloop transitions, 2 changer transitions 9/23 dead transitions. [2023-08-04 04:31:53,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 95 flow [2023-08-04 04:31:53,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:31:53,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:31:53,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2023-08-04 04:31:53,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46195652173913043 [2023-08-04 04:31:53,895 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 340 transitions. [2023-08-04 04:31:53,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 340 transitions. [2023-08-04 04:31:53,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:31:53,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 340 transitions. [2023-08-04 04:31:53,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:53,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:53,899 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:53,899 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 51 flow. Second operand 4 states and 340 transitions. [2023-08-04 04:31:53,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 95 flow [2023-08-04 04:31:53,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 23 transitions, 89 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:31:53,900 INFO L231 Difference]: Finished difference. Result has 22 places, 10 transitions, 29 flow [2023-08-04 04:31:53,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=29, PETRI_PLACES=22, PETRI_TRANSITIONS=10} [2023-08-04 04:31:53,900 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -2 predicate places. [2023-08-04 04:31:53,900 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 10 transitions, 29 flow [2023-08-04 04:31:53,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:53,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:31:53,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:31:53,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 04:31:54,105 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 [2023-08-04 04:31:54,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:31:54,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:31:54,107 INFO L85 PathProgramCache]: Analyzing trace with hash 570457609, now seen corresponding path program 1 times [2023-08-04 04:31:54,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:31:54,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839536040] [2023-08-04 04:31:54,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:31:54,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:31:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:31:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:31:54,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:31:54,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839536040] [2023-08-04 04:31:54,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839536040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:31:54,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:31:54,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:31:54,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509224766] [2023-08-04 04:31:54,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:31:54,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:31:54,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:31:54,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:31:54,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:31:54,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 184 [2023-08-04 04:31:54,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 10 transitions, 29 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:54,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:31:54,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 184 [2023-08-04 04:31:54,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:31:54,245 INFO L124 PetriNetUnfolderBase]: 6/25 cut-off events. [2023-08-04 04:31:54,246 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 04:31:54,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 25 events. 6/25 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 42 event pairs, 4 based on Foata normal form. 3/28 useless extension candidates. Maximal degree in co-relation 54. Up to 16 conditions per place. [2023-08-04 04:31:54,246 INFO L140 encePairwiseOnDemand]: 182/184 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-04 04:31:54,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 51 flow [2023-08-04 04:31:54,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:31:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:31:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2023-08-04 04:31:54,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2023-08-04 04:31:54,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2023-08-04 04:31:54,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2023-08-04 04:31:54,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:31:54,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2023-08-04 04:31:54,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:54,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:54,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:54,253 INFO L175 Difference]: Start difference. First operand has 22 places, 10 transitions, 29 flow. Second operand 3 states and 256 transitions. [2023-08-04 04:31:54,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 51 flow [2023-08-04 04:31:54,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 47 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:31:54,254 INFO L231 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2023-08-04 04:31:54,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2023-08-04 04:31:54,255 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -8 predicate places. [2023-08-04 04:31:54,255 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2023-08-04 04:31:54,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:54,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 04:31:54,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 04:31:54,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 04:31:54,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 04:31:54,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:31:54,260 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 04:31:54,263 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:31:54,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 95 transitions, 198 flow [2023-08-04 04:31:54,289 INFO L124 PetriNetUnfolderBase]: 9/122 cut-off events. [2023-08-04 04:31:54,290 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2023-08-04 04:31:54,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 122 events. 9/122 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 197 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2023-08-04 04:31:54,293 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 95 transitions, 198 flow [2023-08-04 04:31:54,294 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 89 transitions, 183 flow [2023-08-04 04:31:54,294 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:31:54,294 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 89 transitions, 183 flow [2023-08-04 04:31:54,294 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 89 transitions, 183 flow [2023-08-04 04:31:54,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 89 transitions, 183 flow [2023-08-04 04:31:54,307 INFO L124 PetriNetUnfolderBase]: 8/116 cut-off events. [2023-08-04 04:31:54,307 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:31:54,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 116 events. 8/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 191 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2023-08-04 04:31:54,310 INFO L119 LiptonReduction]: Number of co-enabled transitions 1452 [2023-08-04 04:31:56,407 INFO L134 LiptonReduction]: Checked pairs total: 3104 [2023-08-04 04:31:56,407 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-04 04:31:56,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:31:56,409 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;@25e29c91, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:31:56,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:31:56,412 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:31:56,412 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2023-08-04 04:31:56,412 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:31:56,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:31:56,412 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:31:56,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:31:56,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:31:56,413 INFO L85 PathProgramCache]: Analyzing trace with hash 468625001, now seen corresponding path program 1 times [2023-08-04 04:31:56,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:31:56,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103551110] [2023-08-04 04:31:56,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:31:56,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:31:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:31:56,447 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:31:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:31:56,492 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:31:56,492 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:31:56,492 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:31:56,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 04:31:56,492 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:31:56,493 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:31:56,493 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:31:56,494 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:31:56,508 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-04 04:31:56,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 119 transitions, 256 flow [2023-08-04 04:31:56,524 INFO L124 PetriNetUnfolderBase]: 16/197 cut-off events. [2023-08-04 04:31:56,525 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-08-04 04:31:56,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 197 events. 16/197 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 472 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2023-08-04 04:31:56,526 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 119 transitions, 256 flow [2023-08-04 04:31:56,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 119 transitions, 256 flow [2023-08-04 04:31:56,527 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:31:56,527 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 119 transitions, 256 flow [2023-08-04 04:31:56,527 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 119 transitions, 256 flow [2023-08-04 04:31:56,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 119 transitions, 256 flow [2023-08-04 04:31:56,541 INFO L124 PetriNetUnfolderBase]: 16/197 cut-off events. [2023-08-04 04:31:56,542 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-08-04 04:31:56,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 197 events. 16/197 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 472 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2023-08-04 04:31:56,545 INFO L119 LiptonReduction]: Number of co-enabled transitions 4356 [2023-08-04 04:31:59,077 INFO L134 LiptonReduction]: Checked pairs total: 11575 [2023-08-04 04:31:59,077 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-08-04 04:31:59,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:31:59,080 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;@25e29c91, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:31:59,080 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-04 04:31:59,080 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:31:59,081 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-04 04:31:59,081 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:31:59,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:31:59,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-04 04:31:59,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:31:59,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:31:59,081 INFO L85 PathProgramCache]: Analyzing trace with hash 699, now seen corresponding path program 1 times [2023-08-04 04:31:59,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:31:59,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285268613] [2023-08-04 04:31:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:31:59,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:31:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:31:59,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:31:59,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:31:59,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285268613] [2023-08-04 04:31:59,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285268613] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:31:59,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:31:59,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-04 04:31:59,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455658173] [2023-08-04 04:31:59,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:31:59,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-04 04:31:59,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:31:59,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-04 04:31:59,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-04 04:31:59,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 222 [2023-08-04 04:31:59,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 98 flow. Second operand has 2 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:59,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:31:59,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 222 [2023-08-04 04:31:59,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:31:59,317 INFO L124 PetriNetUnfolderBase]: 1339/2440 cut-off events. [2023-08-04 04:31:59,317 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-04 04:31:59,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4706 conditions, 2440 events. 1339/2440 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 13862 event pairs, 1328 based on Foata normal form. 0/1972 useless extension candidates. Maximal degree in co-relation 2360. Up to 2204 conditions per place. [2023-08-04 04:31:59,332 INFO L140 encePairwiseOnDemand]: 220/222 looper letters, 30 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2023-08-04 04:31:59,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 152 flow [2023-08-04 04:31:59,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-04 04:31:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-04 04:31:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 242 transitions. [2023-08-04 04:31:59,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.545045045045045 [2023-08-04 04:31:59,333 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 242 transitions. [2023-08-04 04:31:59,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 242 transitions. [2023-08-04 04:31:59,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:31:59,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 242 transitions. [2023-08-04 04:31:59,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 121.0) internal successors, (242), 2 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:59,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:59,335 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:59,335 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 98 flow. Second operand 2 states and 242 transitions. [2023-08-04 04:31:59,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 152 flow [2023-08-04 04:31:59,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:31:59,339 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 92 flow [2023-08-04 04:31:59,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=92, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-04 04:31:59,341 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-04 04:31:59,341 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 92 flow [2023-08-04 04:31:59,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:59,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:31:59,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-04 04:31:59,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:31:59,342 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:31:59,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:31:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash 690465, now seen corresponding path program 1 times [2023-08-04 04:31:59,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:31:59,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966097628] [2023-08-04 04:31:59,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:31:59,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:31:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:31:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:31:59,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:31:59,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966097628] [2023-08-04 04:31:59,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966097628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:31:59,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:31:59,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:31:59,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316858274] [2023-08-04 04:31:59,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:31:59,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:31:59,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:31:59,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:31:59,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:31:59,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 222 [2023-08-04 04:31:59,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:59,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:31:59,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 222 [2023-08-04 04:31:59,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:31:59,604 INFO L124 PetriNetUnfolderBase]: 1338/2401 cut-off events. [2023-08-04 04:31:59,604 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-08-04 04:31:59,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4672 conditions, 2401 events. 1338/2401 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 13764 event pairs, 608 based on Foata normal form. 0/1945 useless extension candidates. Maximal degree in co-relation 4667. Up to 2189 conditions per place. [2023-08-04 04:31:59,615 INFO L140 encePairwiseOnDemand]: 219/222 looper letters, 38 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-04 04:31:59,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 192 flow [2023-08-04 04:31:59,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:31:59,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:31:59,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-08-04 04:31:59,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165165165165165 [2023-08-04 04:31:59,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-08-04 04:31:59,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-08-04 04:31:59,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:31:59,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-08-04 04:31:59,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:59,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:59,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:59,620 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 92 flow. Second operand 3 states and 344 transitions. [2023-08-04 04:31:59,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 192 flow [2023-08-04 04:31:59,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:31:59,622 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 104 flow [2023-08-04 04:31:59,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-08-04 04:31:59,624 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-04 04:31:59,624 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 104 flow [2023-08-04 04:31:59,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:59,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:31:59,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:31:59,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:31:59,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:31:59,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:31:59,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1300090281, now seen corresponding path program 1 times [2023-08-04 04:31:59,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:31:59,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307896359] [2023-08-04 04:31:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:31:59,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:31:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:31:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:31:59,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:31:59,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307896359] [2023-08-04 04:31:59,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307896359] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:31:59,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567097871] [2023-08-04 04:31:59,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:31:59,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:31:59,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:31:59,681 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) [2023-08-04 04:31:59,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:31:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:31:59,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:31:59,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:31:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:31:59,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:31:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:31:59,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567097871] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:31:59,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:31:59,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:31:59,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858817969] [2023-08-04 04:31:59,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:31:59,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:31:59,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:31:59,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:31:59,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:31:59,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 222 [2023-08-04 04:31:59,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:59,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:31:59,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 222 [2023-08-04 04:31:59,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:31:59,981 INFO L124 PetriNetUnfolderBase]: 1305/2215 cut-off events. [2023-08-04 04:31:59,981 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-04 04:31:59,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4609 conditions, 2215 events. 1305/2215 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 12062 event pairs, 73 based on Foata normal form. 9/1870 useless extension candidates. Maximal degree in co-relation 4602. Up to 1717 conditions per place. [2023-08-04 04:31:59,992 INFO L140 encePairwiseOnDemand]: 218/222 looper letters, 53 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-04 04:31:59,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 270 flow [2023-08-04 04:31:59,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:31:59,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:31:59,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 458 transitions. [2023-08-04 04:31:59,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157657657657657 [2023-08-04 04:31:59,994 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 458 transitions. [2023-08-04 04:31:59,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 458 transitions. [2023-08-04 04:31:59,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:31:59,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 458 transitions. [2023-08-04 04:31:59,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:59,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:59,999 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:31:59,999 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 104 flow. Second operand 4 states and 458 transitions. [2023-08-04 04:31:59,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 270 flow [2023-08-04 04:32:00,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:32:00,005 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 122 flow [2023-08-04 04:32:00,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-08-04 04:32:00,006 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-04 04:32:00,006 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 122 flow [2023-08-04 04:32:00,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:00,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:00,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:00,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 04:32:00,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-04 04:32:00,212 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:32:00,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:00,212 INFO L85 PathProgramCache]: Analyzing trace with hash -2138492181, now seen corresponding path program 1 times [2023-08-04 04:32:00,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:00,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473334225] [2023-08-04 04:32:00,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:00,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:00,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:00,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:00,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473334225] [2023-08-04 04:32:00,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473334225] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:00,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:00,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:32:00,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340858991] [2023-08-04 04:32:00,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:00,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:32:00,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:00,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:32:00,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:32:00,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 222 [2023-08-04 04:32:00,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 122 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) [2023-08-04 04:32:00,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:00,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 222 [2023-08-04 04:32:00,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:00,519 INFO L124 PetriNetUnfolderBase]: 1255/2316 cut-off events. [2023-08-04 04:32:00,520 INFO L125 PetriNetUnfolderBase]: For 1076/1076 co-relation queries the response was YES. [2023-08-04 04:32:00,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5119 conditions, 2316 events. 1255/2316 cut-off events. For 1076/1076 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 14012 event pairs, 589 based on Foata normal form. 0/2064 useless extension candidates. Maximal degree in co-relation 5111. Up to 1130 conditions per place. [2023-08-04 04:32:00,530 INFO L140 encePairwiseOnDemand]: 216/222 looper letters, 53 selfloop transitions, 4 changer transitions 3/67 dead transitions. [2023-08-04 04:32:00,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 67 transitions, 330 flow [2023-08-04 04:32:00,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:32:00,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:32:00,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2023-08-04 04:32:00,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375375375375375 [2023-08-04 04:32:00,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2023-08-04 04:32:00,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2023-08-04 04:32:00,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:00,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2023-08-04 04:32:00,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:00,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:00,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:00,534 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 122 flow. Second operand 3 states and 358 transitions. [2023-08-04 04:32:00,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 67 transitions, 330 flow [2023-08-04 04:32:00,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 323 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-04 04:32:00,538 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 154 flow [2023-08-04 04:32:00,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2023-08-04 04:32:00,540 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-08-04 04:32:00,540 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 154 flow [2023-08-04 04:32:00,540 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) [2023-08-04 04:32:00,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:00,540 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-04 04:32:00,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 04:32:00,541 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:32:00,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:00,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1576769522, now seen corresponding path program 1 times [2023-08-04 04:32:00,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:00,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897280444] [2023-08-04 04:32:00,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:00,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:00,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:32:00,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:00,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897280444] [2023-08-04 04:32:00,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897280444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:00,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:00,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 04:32:00,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053655329] [2023-08-04 04:32:00,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:00,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:32:00,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:00,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:32:00,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:32:00,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 222 [2023-08-04 04:32:00,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:00,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:00,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 222 [2023-08-04 04:32:00,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:00,837 INFO L124 PetriNetUnfolderBase]: 1205/2260 cut-off events. [2023-08-04 04:32:00,838 INFO L125 PetriNetUnfolderBase]: For 1382/1382 co-relation queries the response was YES. [2023-08-04 04:32:00,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5567 conditions, 2260 events. 1205/2260 cut-off events. For 1382/1382 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 13838 event pairs, 578 based on Foata normal form. 0/2098 useless extension candidates. Maximal degree in co-relation 5557. Up to 1076 conditions per place. [2023-08-04 04:32:00,892 INFO L140 encePairwiseOnDemand]: 216/222 looper letters, 51 selfloop transitions, 5 changer transitions 3/66 dead transitions. [2023-08-04 04:32:00,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 347 flow [2023-08-04 04:32:00,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:32:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:32:00,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2023-08-04 04:32:00,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345345345345346 [2023-08-04 04:32:00,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2023-08-04 04:32:00,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2023-08-04 04:32:00,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:00,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2023-08-04 04:32:00,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:00,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:00,897 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:00,897 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 154 flow. Second operand 3 states and 356 transitions. [2023-08-04 04:32:00,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 347 flow [2023-08-04 04:32:00,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 339 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:32:00,900 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 163 flow [2023-08-04 04:32:00,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-08-04 04:32:00,901 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-08-04 04:32:00,901 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 163 flow [2023-08-04 04:32:00,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:00,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:00,902 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:00,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 04:32:00,902 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:32:00,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:00,902 INFO L85 PathProgramCache]: Analyzing trace with hash 948203269, now seen corresponding path program 1 times [2023-08-04 04:32:00,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:00,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575223309] [2023-08-04 04:32:00,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:00,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:32:00,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:00,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575223309] [2023-08-04 04:32:00,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575223309] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:32:00,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310441880] [2023-08-04 04:32:00,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:00,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:00,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:32:00,999 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) [2023-08-04 04:32:01,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 04:32:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:01,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-04 04:32:01,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:32:01,131 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 [2023-08-04 04:32:01,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-04 04:32:01,156 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 [2023-08-04 04:32:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:32:01,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:32:01,227 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-04 04:32:01,227 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2023-08-04 04:32:01,231 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 33 treesize of output 25 [2023-08-04 04:32:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:32:01,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310441880] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:32:01,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:32:01,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-04 04:32:01,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858804609] [2023-08-04 04:32:01,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:32:01,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-04 04:32:01,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:01,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-04 04:32:01,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-08-04 04:32:01,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 222 [2023-08-04 04:32:01,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 163 flow. Second operand has 10 states, 10 states have (on average 95.5) internal successors, (955), 10 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:01,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:01,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 222 [2023-08-04 04:32:01,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:01,660 INFO L124 PetriNetUnfolderBase]: 428/882 cut-off events. [2023-08-04 04:32:01,660 INFO L125 PetriNetUnfolderBase]: For 758/758 co-relation queries the response was YES. [2023-08-04 04:32:01,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2314 conditions, 882 events. 428/882 cut-off events. For 758/758 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4389 event pairs, 87 based on Foata normal form. 138/948 useless extension candidates. Maximal degree in co-relation 2303. Up to 688 conditions per place. [2023-08-04 04:32:01,662 INFO L140 encePairwiseOnDemand]: 215/222 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2023-08-04 04:32:01,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 274 flow [2023-08-04 04:32:01,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:32:01,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:32:01,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 416 transitions. [2023-08-04 04:32:01,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2023-08-04 04:32:01,664 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 416 transitions. [2023-08-04 04:32:01,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 416 transitions. [2023-08-04 04:32:01,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:01,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 416 transitions. [2023-08-04 04:32:01,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:01,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:01,667 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:01,667 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 163 flow. Second operand 4 states and 416 transitions. [2023-08-04 04:32:01,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 274 flow [2023-08-04 04:32:01,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 251 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-04 04:32:01,670 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-08-04 04:32:01,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-08-04 04:32:01,671 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-04 04:32:01,671 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-08-04 04:32:01,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.5) internal successors, (955), 10 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:01,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-04 04:32:01,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-04 04:32:01,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-04 04:32:01,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-04 04:32:01,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-04 04:32:01,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 04:32:01,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:01,878 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-04 04:32:01,878 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:32:01,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 119 transitions, 256 flow [2023-08-04 04:32:01,895 INFO L124 PetriNetUnfolderBase]: 16/197 cut-off events. [2023-08-04 04:32:01,895 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-08-04 04:32:01,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 197 events. 16/197 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 472 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2023-08-04 04:32:01,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 119 transitions, 256 flow [2023-08-04 04:32:01,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 118 transitions, 254 flow [2023-08-04 04:32:01,896 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:32:01,897 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 118 transitions, 254 flow [2023-08-04 04:32:01,897 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 118 transitions, 254 flow [2023-08-04 04:32:01,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 118 transitions, 254 flow [2023-08-04 04:32:01,910 INFO L124 PetriNetUnfolderBase]: 16/196 cut-off events. [2023-08-04 04:32:01,910 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-08-04 04:32:01,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 196 events. 16/196 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 461 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 123. Up to 8 conditions per place. [2023-08-04 04:32:01,913 INFO L119 LiptonReduction]: Number of co-enabled transitions 4356 [2023-08-04 04:32:04,301 INFO L134 LiptonReduction]: Checked pairs total: 13657 [2023-08-04 04:32:04,302 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-04 04:32:04,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:32:04,303 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;@25e29c91, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:32:04,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:32:04,307 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:32:04,307 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2023-08-04 04:32:04,307 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:32:04,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:04,308 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 04:32:04,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:32:04,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:04,308 INFO L85 PathProgramCache]: Analyzing trace with hash 964733284, now seen corresponding path program 1 times [2023-08-04 04:32:04,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:04,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997959411] [2023-08-04 04:32:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:04,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:04,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:04,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997959411] [2023-08-04 04:32:04,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997959411] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:32:04,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598763517] [2023-08-04 04:32:04,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:04,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:04,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:32:04,349 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) [2023-08-04 04:32:04,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 04:32:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:04,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 04:32:04,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:32:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:04,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:32:04,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598763517] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:04,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:32:04,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 04:32:04,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468577918] [2023-08-04 04:32:04,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:04,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:32:04,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:04,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:32:04,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:32:04,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 217 [2023-08-04 04:32:04,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:04,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:04,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 217 [2023-08-04 04:32:04,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:04,639 INFO L124 PetriNetUnfolderBase]: 1195/2027 cut-off events. [2023-08-04 04:32:04,639 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-04 04:32:04,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4058 conditions, 2027 events. 1195/2027 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 11682 event pairs, 0 based on Foata normal form. 0/1668 useless extension candidates. Maximal degree in co-relation 555. Up to 1780 conditions per place. [2023-08-04 04:32:04,643 INFO L140 encePairwiseOnDemand]: 211/217 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2023-08-04 04:32:04,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 64 transitions, 258 flow [2023-08-04 04:32:04,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:32:04,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:32:04,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 564 transitions. [2023-08-04 04:32:04,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5198156682027649 [2023-08-04 04:32:04,646 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 564 transitions. [2023-08-04 04:32:04,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 564 transitions. [2023-08-04 04:32:04,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:04,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 564 transitions. [2023-08-04 04:32:04,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:04,649 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) [2023-08-04 04:32:04,649 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) [2023-08-04 04:32:04,649 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 100 flow. Second operand 5 states and 564 transitions. [2023-08-04 04:32:04,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 64 transitions, 258 flow [2023-08-04 04:32:04,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:32:04,651 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-08-04 04:32:04,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-08-04 04:32:04,652 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-04 04:32:04,652 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-08-04 04:32:04,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:04,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:32:04,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 04:32:04,857 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 [2023-08-04 04:32:04,857 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:32:04,858 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2023-08-04 04:32:04,858 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:32:04,858 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:32:04,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:32:04 BasicIcfg [2023-08-04 04:32:04,863 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:32:04,864 INFO L158 Benchmark]: Toolchain (without parser) took 15594.44ms. Allocated memory was 358.6MB in the beginning and 666.9MB in the end (delta: 308.3MB). Free memory was 303.2MB in the beginning and 543.2MB in the end (delta: -240.0MB). Peak memory consumption was 69.4MB. Max. memory is 16.0GB. [2023-08-04 04:32:04,864 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 358.6MB. Free memory is still 311.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:32:04,864 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.47ms. Allocated memory is still 358.6MB. Free memory was 303.2MB in the beginning and 284.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-04 04:32:04,864 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.22ms. Allocated memory is still 358.6MB. Free memory was 284.0MB in the beginning and 282.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:32:04,865 INFO L158 Benchmark]: Boogie Preprocessor took 24.89ms. Allocated memory is still 358.6MB. Free memory was 282.0MB in the beginning and 280.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:32:04,865 INFO L158 Benchmark]: RCFGBuilder took 445.79ms. Allocated memory was 358.6MB in the beginning and 555.7MB in the end (delta: 197.1MB). Free memory was 280.2MB in the beginning and 517.9MB in the end (delta: -237.7MB). Peak memory consumption was 15.9MB. Max. memory is 16.0GB. [2023-08-04 04:32:04,865 INFO L158 Benchmark]: TraceAbstraction took 14663.25ms. Allocated memory was 555.7MB in the beginning and 666.9MB in the end (delta: 111.1MB). Free memory was 517.2MB in the beginning and 543.2MB in the end (delta: -26.1MB). Peak memory consumption was 84.9MB. Max. memory is 16.0GB. [2023-08-04 04:32:04,866 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 358.6MB. Free memory is still 311.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 410.47ms. Allocated memory is still 358.6MB. Free memory was 303.2MB in the beginning and 284.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.22ms. Allocated memory is still 358.6MB. Free memory was 284.0MB in the beginning and 282.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.89ms. Allocated memory is still 358.6MB. Free memory was 282.0MB in the beginning and 280.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 445.79ms. Allocated memory was 358.6MB in the beginning and 555.7MB in the end (delta: 197.1MB). Free memory was 280.2MB in the beginning and 517.9MB in the end (delta: -237.7MB). Peak memory consumption was 15.9MB. Max. memory is 16.0GB. * TraceAbstraction took 14663.25ms. Allocated memory was 555.7MB in the beginning and 666.9MB in the end (delta: 111.1MB). Free memory was 517.2MB in the beginning and 543.2MB in the end (delta: -26.1MB). Peak memory consumption was 84.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 88 PlacesBefore, 24 PlacesAfterwards, 90 TransitionsBefore, 22 TransitionsAfterwards, 1452 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 89 TotalNumberOfCompositions, 2847 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1675, independent: 1531, independent conditional: 0, independent unconditional: 1531, dependent: 144, dependent conditional: 0, dependent unconditional: 144, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 787, independent: 758, independent conditional: 0, independent unconditional: 758, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1675, independent: 773, independent conditional: 0, independent unconditional: 773, dependent: 115, dependent conditional: 0, dependent unconditional: 115, unknown: 787, unknown conditional: 0, unknown unconditional: 787] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 87 PlacesBefore, 23 PlacesAfterwards, 89 TransitionsBefore, 21 TransitionsAfterwards, 1452 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 86 TotalNumberOfCompositions, 3104 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1835, independent: 1659, independent conditional: 0, independent unconditional: 1659, dependent: 176, dependent conditional: 0, dependent unconditional: 176, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 792, independent: 756, independent conditional: 0, independent unconditional: 756, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1835, independent: 903, independent conditional: 0, independent unconditional: 903, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 792, unknown conditional: 0, unknown unconditional: 792] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 44, Positive conditional cache size: 0, Positive unconditional cache size: 44, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 116 PlacesBefore, 42 PlacesAfterwards, 119 TransitionsBefore, 40 TransitionsAfterwards, 4356 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 103 TotalNumberOfCompositions, 11575 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5100, independent: 4834, independent conditional: 0, independent unconditional: 4834, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2231, independent: 2177, independent conditional: 0, independent unconditional: 2177, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5100, independent: 2657, independent conditional: 0, independent unconditional: 2657, dependent: 212, dependent conditional: 0, dependent unconditional: 212, unknown: 2231, unknown conditional: 0, unknown unconditional: 2231] , Statistics on independence cache: Total cache size (in pairs): 206, Positive cache size: 174, Positive conditional cache size: 0, Positive unconditional cache size: 174, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 115 PlacesBefore, 42 PlacesAfterwards, 118 TransitionsBefore, 41 TransitionsAfterwards, 4356 CoEnabledTransitionPairs, 7 FixpointIterations, 32 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 98 TotalNumberOfCompositions, 13657 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5380, independent: 5052, independent conditional: 0, independent unconditional: 5052, dependent: 328, dependent conditional: 0, dependent unconditional: 328, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2212, independent: 2166, independent conditional: 0, independent unconditional: 2166, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5380, independent: 2886, independent conditional: 0, independent unconditional: 2886, dependent: 282, dependent conditional: 0, dependent unconditional: 282, unknown: 2212, unknown conditional: 0, unknown unconditional: 2212] , Statistics on independence cache: Total cache size (in pairs): 168, Positive cache size: 143, Positive conditional cache size: 0, Positive unconditional cache size: 143, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 112 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 83 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 53 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119 IncrementalHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 13 mSDtfsCounter, 119 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=2, InterpolantAutomatonStates: 12, 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 54 SizeOfPredicates, 0 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 0/3 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, 134 locations, 6 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: 5.4s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 363 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 272 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 902 IncrementalHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 42 mSDtfsCounter, 902 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163occurred in iteration=5, InterpolantAutomatonStates: 19, 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, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 1 QuantifiedInterpolants, 334 SizeOfPredicates, 3 NumberOfNonLiveVariables, 258 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 9/27 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 for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 112 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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 for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 134 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 121 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-04 04:32:04,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...