/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_42-traces-ex-mini_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:33:49,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:33:49,318 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:33:49,323 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:33:49,324 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:33:49,324 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:33:49,325 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:33:49,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:33:49,353 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:33:49,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:33:49,357 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:33:49,357 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:33:49,358 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:33:49,359 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:33:49,359 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:33:49,359 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:33:49,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:33:49,360 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:33:49,360 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:33:49,360 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:33:49,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:33:49,361 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:33:49,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:33:49,361 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:33:49,361 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:33:49,361 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:33:49,362 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:33:49,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:33:49,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:33:49,362 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:33:49,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:33:49,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:33:49,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:33:49,363 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:33:49,363 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:33:49,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:33:49,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:33:49,363 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:33:49,364 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:33:49,364 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:33:49,364 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:33:49,364 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:33:49,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:33:49,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:33:49,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:33:49,559 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:33:49,559 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:33:49,560 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_42-traces-ex-mini_true_bound2.i [2023-08-04 04:33:50,781 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:33:51,007 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:33:51,007 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_42-traces-ex-mini_true_bound2.i [2023-08-04 04:33:51,025 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad4d100af/7c4cc3dc22ff45ce8fd351c1b5b48400/FLAG377bf5f99 [2023-08-04 04:33:51,037 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad4d100af/7c4cc3dc22ff45ce8fd351c1b5b48400 [2023-08-04 04:33:51,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:33:51,041 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:33:51,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:33:51,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:33:51,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:33:51,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:33:51" (1/1) ... [2023-08-04 04:33:51,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74823878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:51, skipping insertion in model container [2023-08-04 04:33:51,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:33:51" (1/1) ... [2023-08-04 04:33:51,085 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:33:51,214 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_42-traces-ex-mini_true_bound2.i[1091,1104] [2023-08-04 04:33:51,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:33:51,369 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:33:51,385 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_42-traces-ex-mini_true_bound2.i[1091,1104] [2023-08-04 04:33:51,401 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-04 04:33:51,403 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-04 04:33:51,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:33:51,443 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:33:51,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:51 WrapperNode [2023-08-04 04:33:51,443 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:33:51,444 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:33:51,444 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:33:51,444 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:33:51,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:51" (1/1) ... [2023-08-04 04:33:51,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:51" (1/1) ... [2023-08-04 04:33:51,479 INFO L138 Inliner]: procedures = 162, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2023-08-04 04:33:51,479 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:33:51,480 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:33:51,480 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:33:51,480 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:33:51,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:51" (1/1) ... [2023-08-04 04:33:51,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:51" (1/1) ... [2023-08-04 04:33:51,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:51" (1/1) ... [2023-08-04 04:33:51,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:51" (1/1) ... [2023-08-04 04:33:51,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:51" (1/1) ... [2023-08-04 04:33:51,497 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:51" (1/1) ... [2023-08-04 04:33:51,499 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:51" (1/1) ... [2023-08-04 04:33:51,499 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:51" (1/1) ... [2023-08-04 04:33:51,502 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:33:51,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:33:51,503 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:33:51,503 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:33:51,503 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:51" (1/1) ... [2023-08-04 04:33:51,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:33:51,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:33:51,538 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 04:33:51,540 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 04:33:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:33:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:33:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:33:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:33:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-04 04:33:51,566 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-04 04:33:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:33:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:33:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:33:51,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:33:51,567 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 04:33:51,682 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:33:51,684 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:33:51,830 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:33:51,836 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:33:51,837 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-04 04:33:51,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:33:51 BoogieIcfgContainer [2023-08-04 04:33:51,838 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:33:51,840 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:33:51,841 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:33:51,843 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:33:51,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:33:51" (1/3) ... [2023-08-04 04:33:51,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb3aad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:33:51, skipping insertion in model container [2023-08-04 04:33:51,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:33:51" (2/3) ... [2023-08-04 04:33:51,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb3aad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:33:51, skipping insertion in model container [2023-08-04 04:33:51,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:33:51" (3/3) ... [2023-08-04 04:33:51,846 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_42-traces-ex-mini_true_bound2.i [2023-08-04 04:33:51,853 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:33:51,861 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:33:51,862 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 04:33:51,862 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:33:51,904 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:33:51,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 79 transitions, 163 flow [2023-08-04 04:33:51,979 INFO L124 PetriNetUnfolderBase]: 4/107 cut-off events. [2023-08-04 04:33:51,979 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:51,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 107 events. 4/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 140 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2023-08-04 04:33:51,983 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 79 transitions, 163 flow [2023-08-04 04:33:51,988 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 67 transitions, 137 flow [2023-08-04 04:33:51,992 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:33:52,000 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 67 transitions, 137 flow [2023-08-04 04:33:52,003 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 67 transitions, 137 flow [2023-08-04 04:33:52,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 67 transitions, 137 flow [2023-08-04 04:33:52,024 INFO L124 PetriNetUnfolderBase]: 2/84 cut-off events. [2023-08-04 04:33:52,024 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:52,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 84 events. 2/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2023-08-04 04:33:52,026 INFO L119 LiptonReduction]: Number of co-enabled transitions 484 [2023-08-04 04:33:54,586 INFO L134 LiptonReduction]: Checked pairs total: 1095 [2023-08-04 04:33:54,586 INFO L136 LiptonReduction]: Total number of compositions: 54 [2023-08-04 04:33:54,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:33:54,604 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;@58e5d103, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:33:54,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:33:54,608 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:33:54,608 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-04 04:33:54,608 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:54,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:54,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 04:33:54,609 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:33:54,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:54,613 INFO L85 PathProgramCache]: Analyzing trace with hash 254975166, now seen corresponding path program 1 times [2023-08-04 04:33:54,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:54,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794395620] [2023-08-04 04:33:54,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:54,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:54,876 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 04:33:54,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:33:54,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794395620] [2023-08-04 04:33:54,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794395620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:33:54,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:33:54,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:33:54,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859882184] [2023-08-04 04:33:54,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:33:54,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:33:54,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:33:54,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:33:54,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:33:54,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 133 [2023-08-04 04:33:54,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 31 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 04:33:54,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:33:54,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 133 [2023-08-04 04:33:54,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:33:54,989 INFO L124 PetriNetUnfolderBase]: 18/57 cut-off events. [2023-08-04 04:33:54,989 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:54,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 57 events. 18/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 164 event pairs, 10 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 99. Up to 43 conditions per place. [2023-08-04 04:33:54,991 INFO L140 encePairwiseOnDemand]: 130/133 looper letters, 12 selfloop transitions, 2 changer transitions 1/18 dead transitions. [2023-08-04 04:33:54,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 18 transitions, 69 flow [2023-08-04 04:33:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:33:54,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:33:55,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-04 04:33:55,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5739348370927319 [2023-08-04 04:33:55,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-04 04:33:55,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-04 04:33:55,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:33:55,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-04 04:33:55,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states 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 04:33:55,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states 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 04:33:55,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states 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 04:33:55,028 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 31 flow. Second operand 3 states and 229 transitions. [2023-08-04 04:33:55,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 18 transitions, 69 flow [2023-08-04 04:33:55,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 69 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:33:55,032 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 39 flow [2023-08-04 04:33:55,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-04 04:33:55,037 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 3 predicate places. [2023-08-04 04:33:55,037 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 39 flow [2023-08-04 04:33:55,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 04:33:55,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:55,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:33:55,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:33:55,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:33:55,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:55,039 INFO L85 PathProgramCache]: Analyzing trace with hash 713989852, now seen corresponding path program 1 times [2023-08-04 04:33:55,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:55,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728382627] [2023-08-04 04:33:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:55,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:55,124 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 04:33:55,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:33:55,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728382627] [2023-08-04 04:33:55,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728382627] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:33:55,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601363621] [2023-08-04 04:33:55,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:55,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:33:55,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:33:55,134 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 04:33:55,139 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 04:33:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:33:55,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:33:55,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:33:55,270 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 04:33:55,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:33:55,298 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 04:33:55,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601363621] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:33:55,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:33:55,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:33:55,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494710102] [2023-08-04 04:33:55,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:33:55,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:33:55,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:33:55,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:33:55,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:33:55,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 133 [2023-08-04 04:33:55,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 39 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states 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 04:33:55,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:33:55,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 133 [2023-08-04 04:33:55,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:33:55,355 INFO L124 PetriNetUnfolderBase]: 6/23 cut-off events. [2023-08-04 04:33:55,355 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 04:33:55,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 23 events. 6/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 0 based on Foata normal form. 4/26 useless extension candidates. Maximal degree in co-relation 45. Up to 14 conditions per place. [2023-08-04 04:33:55,356 INFO L140 encePairwiseOnDemand]: 130/133 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2023-08-04 04:33:55,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 14 transitions, 59 flow [2023-08-04 04:33:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:33:55,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:33:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 292 transitions. [2023-08-04 04:33:55,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488721804511278 [2023-08-04 04:33:55,363 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 292 transitions. [2023-08-04 04:33:55,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 292 transitions. [2023-08-04 04:33:55,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:33:55,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 292 transitions. [2023-08-04 04:33:55,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states 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 04:33:55,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states 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 04:33:55,372 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states 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 04:33:55,372 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 39 flow. Second operand 4 states and 292 transitions. [2023-08-04 04:33:55,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 14 transitions, 59 flow [2023-08-04 04:33:55,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 14 transitions, 53 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:33:55,373 INFO L231 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2023-08-04 04:33:55,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2023-08-04 04:33:55,374 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -1 predicate places. [2023-08-04 04:33:55,374 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2023-08-04 04:33:55,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states 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 04:33:55,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 04:33:55,389 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 04:33:55,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:33:55,590 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 04:33:55,591 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 04:33:55,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 79 transitions, 163 flow [2023-08-04 04:33:55,619 INFO L124 PetriNetUnfolderBase]: 4/107 cut-off events. [2023-08-04 04:33:55,619 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:55,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 107 events. 4/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 140 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2023-08-04 04:33:55,619 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 79 transitions, 163 flow [2023-08-04 04:33:55,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 55 transitions, 115 flow [2023-08-04 04:33:55,620 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:33:55,620 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 55 transitions, 115 flow [2023-08-04 04:33:55,621 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 55 transitions, 115 flow [2023-08-04 04:33:55,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 55 transitions, 115 flow [2023-08-04 04:33:55,626 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2023-08-04 04:33:55,626 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:55,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 59 events. 0/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-04 04:33:55,627 INFO L119 LiptonReduction]: Number of co-enabled transitions 220 [2023-08-04 04:33:58,087 INFO L134 LiptonReduction]: Checked pairs total: 176 [2023-08-04 04:33:58,087 INFO L136 LiptonReduction]: Total number of compositions: 53 [2023-08-04 04:33:58,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:33:58,090 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;@58e5d103, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:33:58,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:33:58,092 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:33:58,092 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-04 04:33:58,092 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:33:58,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:33:58,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 04:33:58,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:33:58,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:33:58,093 INFO L85 PathProgramCache]: Analyzing trace with hash 9778513, now seen corresponding path program 1 times [2023-08-04 04:33:58,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:33:58,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244409781] [2023-08-04 04:33:58,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:33:58,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:33:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:33:58,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:33:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:33:58,160 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:33:58,160 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:33:58,160 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:33:58,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:33:58,161 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:33:58,161 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:33:58,162 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:33:58,162 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:33:58,173 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:33:58,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 91 transitions, 194 flow [2023-08-04 04:33:58,188 INFO L124 PetriNetUnfolderBase]: 6/152 cut-off events. [2023-08-04 04:33:58,189 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:33:58,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 152 events. 6/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 280 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 108. Up to 6 conditions per place. [2023-08-04 04:33:58,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 91 transitions, 194 flow [2023-08-04 04:33:58,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 79 transitions, 166 flow [2023-08-04 04:33:58,190 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:33:58,190 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 79 transitions, 166 flow [2023-08-04 04:33:58,191 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 79 transitions, 166 flow [2023-08-04 04:33:58,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 79 transitions, 166 flow [2023-08-04 04:33:58,200 INFO L124 PetriNetUnfolderBase]: 3/118 cut-off events. [2023-08-04 04:33:58,201 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:33:58,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 118 events. 3/118 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 159 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-08-04 04:33:58,202 INFO L119 LiptonReduction]: Number of co-enabled transitions 1232 [2023-08-04 04:34:00,258 INFO L134 LiptonReduction]: Checked pairs total: 3414 [2023-08-04 04:34:00,258 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-08-04 04:34:00,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:34:00,261 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;@58e5d103, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:34:00,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:34:00,264 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:34:00,264 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-04 04:34:00,264 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:34:00,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:34:00,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 04:34:00,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:34:00,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:34:00,265 INFO L85 PathProgramCache]: Analyzing trace with hash 459163639, now seen corresponding path program 1 times [2023-08-04 04:34:00,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:34:00,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236042592] [2023-08-04 04:34:00,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:34:00,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:34:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:34:00,303 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 04:34:00,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:34:00,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236042592] [2023-08-04 04:34:00,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236042592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:34:00,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:34:00,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:34:00,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849975746] [2023-08-04 04:34:00,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:34:00,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:34:00,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:34:00,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:34:00,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:34:00,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 149 [2023-08-04 04:34:00,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states 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 04:34:00,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:34:00,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 149 [2023-08-04 04:34:00,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:34:00,388 INFO L124 PetriNetUnfolderBase]: 226/501 cut-off events. [2023-08-04 04:34:00,388 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 04:34:00,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 501 events. 226/501 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2565 event pairs, 90 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 167. Up to 397 conditions per place. [2023-08-04 04:34:00,394 INFO L140 encePairwiseOnDemand]: 146/149 looper letters, 20 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-04 04:34:00,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 108 flow [2023-08-04 04:34:00,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:34:00,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:34:00,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2023-08-04 04:34:00,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6017897091722595 [2023-08-04 04:34:00,396 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2023-08-04 04:34:00,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2023-08-04 04:34:00,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:34:00,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2023-08-04 04:34:00,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states 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 04:34:00,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 04:34:00,400 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 04:34:00,401 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 52 flow. Second operand 3 states and 269 transitions. [2023-08-04 04:34:00,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 108 flow [2023-08-04 04:34:00,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:34:00,404 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 64 flow [2023-08-04 04:34:00,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-08-04 04:34:00,405 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-08-04 04:34:00,405 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 64 flow [2023-08-04 04:34:00,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states 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 04:34:00,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:34:00,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:34:00,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:34:00,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:34:00,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:34:00,406 INFO L85 PathProgramCache]: Analyzing trace with hash -790005704, now seen corresponding path program 1 times [2023-08-04 04:34:00,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:34:00,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389683807] [2023-08-04 04:34:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:34:00,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:34:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:34:00,472 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 04:34:00,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:34:00,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389683807] [2023-08-04 04:34:00,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389683807] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:34:00,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661329405] [2023-08-04 04:34:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:34:00,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:34:00,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:34:00,477 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 04:34:00,489 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 04:34:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:34:00,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:34:00,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:34:00,569 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 04:34:00,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:34:00,586 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 04:34:00,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661329405] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:34:00,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:34:00,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:34:00,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930920652] [2023-08-04 04:34:00,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:34:00,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:34:00,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:34:00,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:34:00,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:34:00,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 149 [2023-08-04 04:34:00,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states 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 04:34:00,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:34:00,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 149 [2023-08-04 04:34:00,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:34:00,683 INFO L124 PetriNetUnfolderBase]: 210/405 cut-off events. [2023-08-04 04:34:00,683 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-08-04 04:34:00,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 405 events. 210/405 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1878 event pairs, 30 based on Foata normal form. 5/404 useless extension candidates. Maximal degree in co-relation 174. Up to 256 conditions per place. [2023-08-04 04:34:00,686 INFO L140 encePairwiseOnDemand]: 145/149 looper letters, 26 selfloop transitions, 3 changer transitions 1/36 dead transitions. [2023-08-04 04:34:00,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 36 transitions, 150 flow [2023-08-04 04:34:00,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:34:00,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:34:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2023-08-04 04:34:00,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5956375838926175 [2023-08-04 04:34:00,688 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 355 transitions. [2023-08-04 04:34:00,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 355 transitions. [2023-08-04 04:34:00,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:34:00,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 355 transitions. [2023-08-04 04:34:00,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 04:34:00,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 04:34:00,691 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 04:34:00,691 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 4 states and 355 transitions. [2023-08-04 04:34:00,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 36 transitions, 150 flow [2023-08-04 04:34:00,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:34:00,693 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 76 flow [2023-08-04 04:34:00,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2023-08-04 04:34:00,694 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-08-04 04:34:00,694 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 76 flow [2023-08-04 04:34:00,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states 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 04:34:00,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:34:00,694 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:34:00,704 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 04:34:00,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:34:00,900 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:34:00,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:34:00,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1512645830, now seen corresponding path program 1 times [2023-08-04 04:34:00,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:34:00,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224612568] [2023-08-04 04:34:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:34:00,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:34:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:34:01,019 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 04:34:01,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:34:01,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224612568] [2023-08-04 04:34:01,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224612568] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:34:01,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:34:01,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 04:34:01,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916496348] [2023-08-04 04:34:01,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:34:01,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:34:01,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:34:01,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:34:01,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:34:01,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 149 [2023-08-04 04:34:01,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 04:34:01,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:34:01,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 149 [2023-08-04 04:34:01,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:34:01,097 INFO L124 PetriNetUnfolderBase]: 334/648 cut-off events. [2023-08-04 04:34:01,097 INFO L125 PetriNetUnfolderBase]: For 405/405 co-relation queries the response was YES. [2023-08-04 04:34:01,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1482 conditions, 648 events. 334/648 cut-off events. For 405/405 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3112 event pairs, 221 based on Foata normal form. 29/676 useless extension candidates. Maximal degree in co-relation 600. Up to 422 conditions per place. [2023-08-04 04:34:01,101 INFO L140 encePairwiseOnDemand]: 143/149 looper letters, 32 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-04 04:34:01,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 206 flow [2023-08-04 04:34:01,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:34:01,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:34:01,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2023-08-04 04:34:01,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6241610738255033 [2023-08-04 04:34:01,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2023-08-04 04:34:01,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2023-08-04 04:34:01,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:34:01,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2023-08-04 04:34:01,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 04:34:01,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 04:34:01,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 04:34:01,105 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 76 flow. Second operand 3 states and 279 transitions. [2023-08-04 04:34:01,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 206 flow [2023-08-04 04:34:01,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 40 transitions, 194 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 04:34:01,107 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 107 flow [2023-08-04 04:34:01,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-08-04 04:34:01,107 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-08-04 04:34:01,107 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 107 flow [2023-08-04 04:34:01,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 04:34:01,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:34:01,108 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:34:01,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:34:01,108 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:34:01,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:34:01,109 INFO L85 PathProgramCache]: Analyzing trace with hash 45014304, now seen corresponding path program 1 times [2023-08-04 04:34:01,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:34:01,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958364100] [2023-08-04 04:34:01,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:34:01,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:34:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:34:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:34:01,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:34:01,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958364100] [2023-08-04 04:34:01,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958364100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:34:01,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:34:01,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:34:01,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068715947] [2023-08-04 04:34:01,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:34:01,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:34:01,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:34:01,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:34:01,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:34:01,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 149 [2023-08-04 04:34:01,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 04:34:01,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:34:01,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 149 [2023-08-04 04:34:01,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:34:01,428 INFO L124 PetriNetUnfolderBase]: 143/339 cut-off events. [2023-08-04 04:34:01,428 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2023-08-04 04:34:01,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 892 conditions, 339 events. 143/339 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1692 event pairs, 46 based on Foata normal form. 49/383 useless extension candidates. Maximal degree in co-relation 437. Up to 185 conditions per place. [2023-08-04 04:34:01,430 INFO L140 encePairwiseOnDemand]: 143/149 looper letters, 21 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2023-08-04 04:34:01,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 192 flow [2023-08-04 04:34:01,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:34:01,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:34:01,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2023-08-04 04:34:01,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535234899328859 [2023-08-04 04:34:01,432 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 319 transitions. [2023-08-04 04:34:01,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 319 transitions. [2023-08-04 04:34:01,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:34:01,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 319 transitions. [2023-08-04 04:34:01,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 04:34:01,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 04:34:01,434 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 04:34:01,434 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 107 flow. Second operand 4 states and 319 transitions. [2023-08-04 04:34:01,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 192 flow [2023-08-04 04:34:01,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:34:01,437 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 109 flow [2023-08-04 04:34:01,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-08-04 04:34:01,437 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-08-04 04:34:01,437 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 109 flow [2023-08-04 04:34:01,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 04:34:01,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:34:01,438 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:34:01,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:34:01,438 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:34:01,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:34:01,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1977738818, now seen corresponding path program 1 times [2023-08-04 04:34:01,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:34:01,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350024329] [2023-08-04 04:34:01,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:34:01,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:34:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:34:01,571 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:34:01,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:34:01,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350024329] [2023-08-04 04:34:01,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350024329] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:34:01,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:34:01,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-04 04:34:01,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553740149] [2023-08-04 04:34:01,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:34:01,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:34:01,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:34:01,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:34:01,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:34:01,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 149 [2023-08-04 04:34:01,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 75.33333333333333) internal successors, (452), 6 states have internal predecessors, (452), 0 states have call successors, (0), 0 states 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 04:34:01,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:34:01,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 149 [2023-08-04 04:34:01,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:34:01,722 INFO L124 PetriNetUnfolderBase]: 66/183 cut-off events. [2023-08-04 04:34:01,722 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2023-08-04 04:34:01,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 183 events. 66/183 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 740 event pairs, 24 based on Foata normal form. 10/192 useless extension candidates. Maximal degree in co-relation 277. Up to 86 conditions per place. [2023-08-04 04:34:01,723 INFO L140 encePairwiseOnDemand]: 143/149 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-08-04 04:34:01,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 180 flow [2023-08-04 04:34:01,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:34:01,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:34:01,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2023-08-04 04:34:01,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535234899328859 [2023-08-04 04:34:01,724 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 319 transitions. [2023-08-04 04:34:01,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 319 transitions. [2023-08-04 04:34:01,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:34:01,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 319 transitions. [2023-08-04 04:34:01,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 04:34:01,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 04:34:01,727 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 04:34:01,727 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 109 flow. Second operand 4 states and 319 transitions. [2023-08-04 04:34:01,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 180 flow [2023-08-04 04:34:01,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 161 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 04:34:01,728 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2023-08-04 04:34:01,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2023-08-04 04:34:01,729 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-08-04 04:34:01,729 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2023-08-04 04:34:01,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.33333333333333) internal successors, (452), 6 states have internal predecessors, (452), 0 states have call successors, (0), 0 states 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 04:34:01,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 04:34:01,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 04:34:01,730 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-04 04:34:01,730 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 04:34:01,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 91 transitions, 194 flow [2023-08-04 04:34:01,742 INFO L124 PetriNetUnfolderBase]: 6/152 cut-off events. [2023-08-04 04:34:01,742 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:34:01,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 152 events. 6/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 280 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 108. Up to 6 conditions per place. [2023-08-04 04:34:01,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 91 transitions, 194 flow [2023-08-04 04:34:01,743 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 67 transitions, 146 flow [2023-08-04 04:34:01,743 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:34:01,743 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 67 transitions, 146 flow [2023-08-04 04:34:01,744 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 67 transitions, 146 flow [2023-08-04 04:34:01,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 146 flow [2023-08-04 04:34:01,749 INFO L124 PetriNetUnfolderBase]: 0/80 cut-off events. [2023-08-04 04:34:01,749 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:34:01,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 0/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-04 04:34:01,750 INFO L119 LiptonReduction]: Number of co-enabled transitions 704 [2023-08-04 04:34:04,047 INFO L134 LiptonReduction]: Checked pairs total: 2044 [2023-08-04 04:34:04,047 INFO L136 LiptonReduction]: Total number of compositions: 52 [2023-08-04 04:34:04,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:34:04,049 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;@58e5d103, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:34:04,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:34:04,051 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:34:04,051 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-04 04:34:04,051 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:34:04,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:34:04,051 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-08-04 04:34:04,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:34:04,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:34:04,052 INFO L85 PathProgramCache]: Analyzing trace with hash -871433200, now seen corresponding path program 1 times [2023-08-04 04:34:04,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:34:04,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616025116] [2023-08-04 04:34:04,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:34:04,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:34:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:34:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:34:04,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:34:04,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616025116] [2023-08-04 04:34:04,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616025116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:34:04,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:34:04,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:34:04,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431646944] [2023-08-04 04:34:04,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:34:04,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:34:04,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:34:04,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:34:04,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:34:04,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 143 [2023-08-04 04:34:04,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states 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 04:34:04,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:34:04,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 143 [2023-08-04 04:34:04,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:34:04,137 INFO L124 PetriNetUnfolderBase]: 20/74 cut-off events. [2023-08-04 04:34:04,138 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 04:34:04,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 74 events. 20/74 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 216 event pairs, 0 based on Foata normal form. 20/93 useless extension candidates. Maximal degree in co-relation 35. Up to 45 conditions per place. [2023-08-04 04:34:04,138 INFO L140 encePairwiseOnDemand]: 141/143 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2023-08-04 04:34:04,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 80 flow [2023-08-04 04:34:04,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:34:04,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:34:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2023-08-04 04:34:04,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6013986013986014 [2023-08-04 04:34:04,140 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 344 transitions. [2023-08-04 04:34:04,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 344 transitions. [2023-08-04 04:34:04,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:34:04,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 344 transitions. [2023-08-04 04:34:04,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.0) internal successors, (344), 4 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 04:34:04,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states 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 04:34:04,142 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states 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 04:34:04,142 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 48 flow. Second operand 4 states and 344 transitions. [2023-08-04 04:34:04,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 80 flow [2023-08-04 04:34:04,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 79 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:34:04,143 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-08-04 04:34:04,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-08-04 04:34:04,144 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2023-08-04 04:34:04,144 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-08-04 04:34:04,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states 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 04:34:04,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:34:04,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 04:34:04,145 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:34:04,145 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2023-08-04 04:34:04,145 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:34:04,145 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:34:04,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:34:04 BasicIcfg [2023-08-04 04:34:04,150 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:34:04,151 INFO L158 Benchmark]: Toolchain (without parser) took 13109.55ms. Allocated memory was 371.2MB in the beginning and 723.5MB in the end (delta: 352.3MB). Free memory was 315.3MB in the beginning and 546.0MB in the end (delta: -230.7MB). Peak memory consumption was 124.2MB. Max. memory is 16.0GB. [2023-08-04 04:34:04,151 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 371.2MB. Free memory is still 323.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:34:04,151 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.07ms. Allocated memory is still 371.2MB. Free memory was 315.3MB in the beginning and 296.1MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-04 04:34:04,151 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.09ms. Allocated memory is still 371.2MB. Free memory was 296.1MB in the beginning and 294.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:34:04,151 INFO L158 Benchmark]: Boogie Preprocessor took 22.11ms. Allocated memory is still 371.2MB. Free memory was 294.0MB in the beginning and 292.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:34:04,152 INFO L158 Benchmark]: RCFGBuilder took 336.09ms. Allocated memory was 371.2MB in the beginning and 601.9MB in the end (delta: 230.7MB). Free memory was 292.3MB in the beginning and 564.3MB in the end (delta: -272.0MB). Peak memory consumption was 15.9MB. Max. memory is 16.0GB. [2023-08-04 04:34:04,152 INFO L158 Benchmark]: TraceAbstraction took 12309.70ms. Allocated memory was 601.9MB in the beginning and 723.5MB in the end (delta: 121.6MB). Free memory was 563.6MB in the beginning and 546.0MB in the end (delta: 17.5MB). Peak memory consumption was 139.7MB. Max. memory is 16.0GB. [2023-08-04 04:34:04,153 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 371.2MB. Free memory is still 323.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 401.07ms. Allocated memory is still 371.2MB. Free memory was 315.3MB in the beginning and 296.1MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.09ms. Allocated memory is still 371.2MB. Free memory was 296.1MB in the beginning and 294.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.11ms. Allocated memory is still 371.2MB. Free memory was 294.0MB in the beginning and 292.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 336.09ms. Allocated memory was 371.2MB in the beginning and 601.9MB in the end (delta: 230.7MB). Free memory was 292.3MB in the beginning and 564.3MB in the end (delta: -272.0MB). Peak memory consumption was 15.9MB. Max. memory is 16.0GB. * TraceAbstraction took 12309.70ms. Allocated memory was 601.9MB in the beginning and 723.5MB in the end (delta: 121.6MB). Free memory was 563.6MB in the beginning and 546.0MB in the end (delta: 17.5MB). Peak memory consumption was 139.7MB. 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: 2.6s, 69 PlacesBefore, 17 PlacesAfterwards, 67 TransitionsBefore, 14 TransitionsAfterwards, 484 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 54 TotalNumberOfCompositions, 1095 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 606, independent: 504, independent conditional: 0, independent unconditional: 504, dependent: 102, dependent conditional: 0, dependent unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 258, independent: 241, independent conditional: 0, independent unconditional: 241, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 606, independent: 263, independent conditional: 0, independent unconditional: 263, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 258, unknown conditional: 0, unknown unconditional: 258] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 58 PlacesBefore, 8 PlacesAfterwards, 55 TransitionsBefore, 5 TransitionsAfterwards, 220 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 53 TotalNumberOfCompositions, 176 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 176, independent: 176, independent conditional: 0, independent unconditional: 176, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 117, independent: 117, independent conditional: 0, independent unconditional: 117, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 176, independent: 59, independent conditional: 0, independent unconditional: 59, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 117, unknown conditional: 0, unknown unconditional: 117] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 83 PlacesBefore, 27 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1232 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 58 TotalNumberOfCompositions, 3414 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1143, independent: 979, independent conditional: 0, independent unconditional: 979, dependent: 164, dependent conditional: 0, dependent unconditional: 164, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 569, independent: 544, independent conditional: 0, independent unconditional: 544, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1143, independent: 435, independent conditional: 0, independent unconditional: 435, dependent: 139, dependent conditional: 0, dependent unconditional: 139, unknown: 569, unknown conditional: 0, unknown unconditional: 569] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, 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: 2.3s, 72 PlacesBefore, 23 PlacesAfterwards, 67 TransitionsBefore, 18 TransitionsAfterwards, 704 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 52 TotalNumberOfCompositions, 2044 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 864, independent: 735, independent conditional: 0, independent unconditional: 735, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 360, independent: 342, independent conditional: 0, independent unconditional: 342, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 864, independent: 393, independent conditional: 0, independent unconditional: 393, dependent: 111, dependent conditional: 0, dependent unconditional: 111, unknown: 360, unknown conditional: 0, unknown unconditional: 360] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 90 locations, 2 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: 3.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65 IncrementalHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 1 mSDtfsCounter, 65 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=1, InterpolantAutomatonStates: 7, 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, 0.3s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 51 SizeOfPredicates, 0 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 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, 102 locations, 2 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: 3.6s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 338 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 191 mSDsluCounter, 118 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 566 IncrementalHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 89 mSDtfsCounter, 566 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=4, InterpolantAutomatonStates: 18, 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, 0.5s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 419 SizeOfPredicates, 0 NumberOfNonLiveVariables, 139 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 18/21 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, 90 locations, 2 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: 2.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 4 NumberOfCodeBlocks, 4 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, 102 locations, 2 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: 2.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 5/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-04 04:34:04,179 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...