/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_44-traces-mine2_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:02:53,812 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:02:53,886 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:02:53,890 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:02:53,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:02:53,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:02:53,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:02:53,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:02:53,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:02:53,921 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:02:53,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:02:53,921 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:02:53,922 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:02:53,923 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:02:53,924 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:02:53,924 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:02:53,924 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:02:53,924 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:02:53,924 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:02:53,925 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:02:53,925 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:02:53,925 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:02:53,925 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:02:53,925 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:02:53,926 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:02:53,926 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:02:53,926 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:02:53,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:02:53,927 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:02:53,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:02:53,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:02:53,928 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:02:53,928 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:02:53,928 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:02:53,928 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:02:53,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:02:53,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:02:53,929 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:02:53,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:02:53,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:02:53,929 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:02:53,930 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:02:54,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:02:54,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:02:54,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:02:54,159 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:02:54,161 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:02:54,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_44-traces-mine2_true_bound2.i [2023-08-03 16:02:55,273 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:02:55,443 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:02:55,444 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_44-traces-mine2_true_bound2.i [2023-08-03 16:02:55,455 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e07c49c7f/f0a6bcb2faff4a68932ef1ebe297b77a/FLAG616638ae4 [2023-08-03 16:02:55,465 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e07c49c7f/f0a6bcb2faff4a68932ef1ebe297b77a [2023-08-03 16:02:55,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:02:55,468 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:02:55,469 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:02:55,469 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:02:55,472 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:02:55,473 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:02:55" (1/1) ... [2023-08-03 16:02:55,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12a8e716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:55, skipping insertion in model container [2023-08-03 16:02:55,473 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:02:55" (1/1) ... [2023-08-03 16:02:55,507 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:02:55,622 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_44-traces-mine2_true_bound2.i[1089,1102] [2023-08-03 16:02:55,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:02:55,735 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:02:55,748 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_44-traces-mine2_true_bound2.i[1089,1102] [2023-08-03 16:02:55,768 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 16:02:55,770 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 16:02:55,791 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:02:55,828 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:02:55,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:55 WrapperNode [2023-08-03 16:02:55,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:02:55,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:02:55,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:02:55,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:02:55,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:55" (1/1) ... [2023-08-03 16:02:55,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:55" (1/1) ... [2023-08-03 16:02:55,889 INFO L138 Inliner]: procedures = 162, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2023-08-03 16:02:55,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:02:55,890 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:02:55,890 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:02:55,890 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:02:55,897 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:55" (1/1) ... [2023-08-03 16:02:55,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:55" (1/1) ... [2023-08-03 16:02:55,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:55" (1/1) ... [2023-08-03 16:02:55,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:55" (1/1) ... [2023-08-03 16:02:55,918 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:55" (1/1) ... [2023-08-03 16:02:55,921 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:55" (1/1) ... [2023-08-03 16:02:55,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:55" (1/1) ... [2023-08-03 16:02:55,923 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:55" (1/1) ... [2023-08-03 16:02:55,925 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:02:55,925 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:02:55,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:02:55,925 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:02:55,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:55" (1/1) ... [2023-08-03 16:02:55,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:02:55,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:02:55,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 16:02:55,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 16:02:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:02:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:02:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:02:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:02:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 16:02:55,983 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 16:02:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:02:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:02:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:02:55,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:02:55,987 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 16:02:56,090 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:02:56,092 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:02:56,236 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:02:56,242 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:02:56,242 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 16:02:56,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:02:56 BoogieIcfgContainer [2023-08-03 16:02:56,244 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:02:56,245 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:02:56,245 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:02:56,248 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:02:56,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:02:55" (1/3) ... [2023-08-03 16:02:56,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5731f47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:02:56, skipping insertion in model container [2023-08-03 16:02:56,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:55" (2/3) ... [2023-08-03 16:02:56,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5731f47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:02:56, skipping insertion in model container [2023-08-03 16:02:56,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:02:56" (3/3) ... [2023-08-03 16:02:56,250 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_44-traces-mine2_true_bound2.i [2023-08-03 16:02:56,254 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:02:56,261 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:02:56,262 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 16:02:56,262 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:02:56,298 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:02:56,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 159 flow [2023-08-03 16:02:56,369 INFO L124 PetriNetUnfolderBase]: 6/109 cut-off events. [2023-08-03 16:02:56,370 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:56,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 109 events. 6/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 180 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2023-08-03 16:02:56,373 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 77 transitions, 159 flow [2023-08-03 16:02:56,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 69 transitions, 143 flow [2023-08-03 16:02:56,379 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:02:56,386 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 69 transitions, 143 flow [2023-08-03 16:02:56,388 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 69 transitions, 143 flow [2023-08-03 16:02:56,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 69 transitions, 143 flow [2023-08-03 16:02:56,414 INFO L124 PetriNetUnfolderBase]: 4/93 cut-off events. [2023-08-03 16:02:56,414 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:56,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 93 events. 4/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2023-08-03 16:02:56,416 INFO L119 LiptonReduction]: Number of co-enabled transitions 720 [2023-08-03 16:02:58,362 INFO L134 LiptonReduction]: Checked pairs total: 1769 [2023-08-03 16:02:58,362 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-08-03 16:02:58,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:02:58,381 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;@260b9179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:02:58,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 16:02:58,384 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:02:58,384 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-03 16:02:58,384 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:58,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:58,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-03 16:02:58,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:58,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:58,388 INFO L85 PathProgramCache]: Analyzing trace with hash 270278, now seen corresponding path program 1 times [2023-08-03 16:02:58,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:58,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252010487] [2023-08-03 16:02:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:58,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:58,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:58,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252010487] [2023-08-03 16:02:58,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252010487] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:58,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:58,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:02:58,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950917111] [2023-08-03 16:02:58,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:58,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:02:58,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:58,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:02:58,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:02:58,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 134 [2023-08-03 16:02:58,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 17 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:58,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:58,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 134 [2023-08-03 16:02:58,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:58,702 INFO L124 PetriNetUnfolderBase]: 28/88 cut-off events. [2023-08-03 16:02:58,702 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:58,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 88 events. 28/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 297 event pairs, 12 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 149. Up to 64 conditions per place. [2023-08-03 16:02:58,704 INFO L140 encePairwiseOnDemand]: 131/134 looper letters, 16 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-08-03 16:02:58,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 22 transitions, 85 flow [2023-08-03 16:02:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:02:58,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:02:58,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2023-08-03 16:02:58,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5472636815920398 [2023-08-03 16:02:58,720 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2023-08-03 16:02:58,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2023-08-03 16:02:58,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:58,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2023-08-03 16:02:58,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:58,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:58,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:58,735 INFO L175 Difference]: Start difference. First operand has 20 places, 17 transitions, 39 flow. Second operand 3 states and 220 transitions. [2023-08-03 16:02:58,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 22 transitions, 85 flow [2023-08-03 16:02:58,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 22 transitions, 85 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:02:58,738 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 47 flow [2023-08-03 16:02:58,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2023-08-03 16:02:58,742 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2023-08-03 16:02:58,742 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 47 flow [2023-08-03 16:02:58,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:58,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:58,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 16:02:58,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:02:58,743 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:58,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:58,743 INFO L85 PathProgramCache]: Analyzing trace with hash -521825220, now seen corresponding path program 1 times [2023-08-03 16:02:58,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:58,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178553541] [2023-08-03 16:02:58,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:58,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:58,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:58,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:58,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178553541] [2023-08-03 16:02:58,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178553541] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:02:58,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835387384] [2023-08-03 16:02:58,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:58,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:58,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:02:58,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:02:58,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 16:02:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:58,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:02:58,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:02:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:58,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:02:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:59,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835387384] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:02:59,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:02:59,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:02:59,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351569598] [2023-08-03 16:02:59,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:02:59,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:02:59,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:59,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:02:59,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:02:59,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 134 [2023-08-03 16:02:59,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 47 flow. Second operand has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:59,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:59,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 134 [2023-08-03 16:02:59,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:59,059 INFO L124 PetriNetUnfolderBase]: 8/35 cut-off events. [2023-08-03 16:02:59,059 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 16:02:59,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 35 events. 8/35 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 67 event pairs, 2 based on Foata normal form. 5/40 useless extension candidates. Maximal degree in co-relation 61. Up to 18 conditions per place. [2023-08-03 16:02:59,060 INFO L140 encePairwiseOnDemand]: 131/134 looper letters, 11 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2023-08-03 16:02:59,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 17 transitions, 71 flow [2023-08-03 16:02:59,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:02:59,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:02:59,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 278 transitions. [2023-08-03 16:02:59,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186567164179104 [2023-08-03 16:02:59,068 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 278 transitions. [2023-08-03 16:02:59,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 278 transitions. [2023-08-03 16:02:59,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:59,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 278 transitions. [2023-08-03 16:02:59,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:59,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:59,075 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:59,076 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 47 flow. Second operand 4 states and 278 transitions. [2023-08-03 16:02:59,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 17 transitions, 71 flow [2023-08-03 16:02:59,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 17 transitions, 65 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:02:59,076 INFO L231 Difference]: Finished difference. Result has 18 places, 12 transitions, 33 flow [2023-08-03 16:02:59,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=33, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2023-08-03 16:02:59,077 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -2 predicate places. [2023-08-03 16:02:59,077 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 33 flow [2023-08-03 16:02:59,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:59,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:59,078 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:02:59,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 16:02:59,283 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 [2023-08-03 16:02:59,283 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:59,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:59,284 INFO L85 PathProgramCache]: Analyzing trace with hash -521824683, now seen corresponding path program 1 times [2023-08-03 16:02:59,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:59,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783266187] [2023-08-03 16:02:59,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:59,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:02:59,319 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:02:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:02:59,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:02:59,349 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:02:59,350 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 16:02:59,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 16:02:59,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 16:02:59,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 16:02:59,352 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 16:02:59,358 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:02:59,358 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:02:59,376 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:02:59,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 90 transitions, 192 flow [2023-08-03 16:02:59,410 INFO L124 PetriNetUnfolderBase]: 9/159 cut-off events. [2023-08-03 16:02:59,410 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:02:59,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 159 events. 9/159 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 349 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 110. Up to 6 conditions per place. [2023-08-03 16:02:59,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 90 transitions, 192 flow [2023-08-03 16:02:59,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 82 transitions, 176 flow [2023-08-03 16:02:59,413 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:02:59,414 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 82 transitions, 176 flow [2023-08-03 16:02:59,414 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 82 transitions, 176 flow [2023-08-03 16:02:59,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 82 transitions, 176 flow [2023-08-03 16:02:59,430 INFO L124 PetriNetUnfolderBase]: 6/135 cut-off events. [2023-08-03 16:02:59,430 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:02:59,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 135 events. 6/135 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 254 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 94. Up to 6 conditions per place. [2023-08-03 16:02:59,433 INFO L119 LiptonReduction]: Number of co-enabled transitions 1752 [2023-08-03 16:03:01,164 INFO L134 LiptonReduction]: Checked pairs total: 5728 [2023-08-03 16:03:01,165 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-08-03 16:03:01,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:03:01,167 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;@260b9179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:03:01,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 16:03:01,169 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:03:01,169 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-03 16:03:01,169 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:03:01,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:01,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-03 16:03:01,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:03:01,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:01,170 INFO L85 PathProgramCache]: Analyzing trace with hash 434058, now seen corresponding path program 1 times [2023-08-03 16:03:01,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:01,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085115748] [2023-08-03 16:03:01,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:01,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:01,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:01,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085115748] [2023-08-03 16:03:01,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085115748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:03:01,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:03:01,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:03:01,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447017036] [2023-08-03 16:03:01,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:03:01,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:03:01,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:01,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:03:01,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:03:01,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2023-08-03 16:03:01,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:01,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:01,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2023-08-03 16:03:01,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:01,333 INFO L124 PetriNetUnfolderBase]: 372/793 cut-off events. [2023-08-03 16:03:01,333 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-03 16:03:01,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 793 events. 372/793 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4483 event pairs, 160 based on Foata normal form. 0/732 useless extension candidates. Maximal degree in co-relation 272. Up to 638 conditions per place. [2023-08-03 16:03:01,340 INFO L140 encePairwiseOnDemand]: 148/152 looper letters, 23 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-08-03 16:03:01,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 128 flow [2023-08-03 16:03:01,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:03:01,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:03:01,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-08-03 16:03:01,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.581140350877193 [2023-08-03 16:03:01,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-08-03 16:03:01,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-08-03 16:03:01,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:01,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-08-03 16:03:01,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:01,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:01,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:01,346 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 70 flow. Second operand 3 states and 265 transitions. [2023-08-03 16:03:01,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 128 flow [2023-08-03 16:03:01,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 126 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 16:03:01,348 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 76 flow [2023-08-03 16:03:01,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-08-03 16:03:01,350 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2023-08-03 16:03:01,350 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 76 flow [2023-08-03 16:03:01,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:01,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:01,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:03:01,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 16:03:01,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:03:01,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:01,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1990725229, now seen corresponding path program 1 times [2023-08-03 16:03:01,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:01,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400004877] [2023-08-03 16:03:01,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:01,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:01,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:01,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400004877] [2023-08-03 16:03:01,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400004877] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:03:01,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842509937] [2023-08-03 16:03:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:01,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:01,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:01,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:03:01,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 16:03:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:01,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:03:01,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:03:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:01,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:03:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:01,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842509937] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:03:01,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:03:01,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:03:01,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228873426] [2023-08-03 16:03:01,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:03:01,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:03:01,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:01,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:03:01,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:03:01,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 152 [2023-08-03 16:03:01,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:01,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:01,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 152 [2023-08-03 16:03:01,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:01,634 INFO L124 PetriNetUnfolderBase]: 348/639 cut-off events. [2023-08-03 16:03:01,634 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-08-03 16:03:01,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 639 events. 348/639 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3257 event pairs, 45 based on Foata normal form. 5/613 useless extension candidates. Maximal degree in co-relation 276. Up to 456 conditions per place. [2023-08-03 16:03:01,639 INFO L140 encePairwiseOnDemand]: 148/152 looper letters, 30 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2023-08-03 16:03:01,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 172 flow [2023-08-03 16:03:01,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:03:01,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:03:01,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2023-08-03 16:03:01,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5707236842105263 [2023-08-03 16:03:01,641 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 347 transitions. [2023-08-03 16:03:01,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 347 transitions. [2023-08-03 16:03:01,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:01,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 347 transitions. [2023-08-03 16:03:01,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:01,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:01,644 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:01,644 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 76 flow. Second operand 4 states and 347 transitions. [2023-08-03 16:03:01,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 172 flow [2023-08-03 16:03:01,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:03:01,646 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 94 flow [2023-08-03 16:03:01,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2023-08-03 16:03:01,648 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-08-03 16:03:01,649 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 94 flow [2023-08-03 16:03:01,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:01,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:01,649 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-03 16:03:01,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 16:03:01,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:01,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:03:01,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:01,856 INFO L85 PathProgramCache]: Analyzing trace with hash -814781615, now seen corresponding path program 1 times [2023-08-03 16:03:01,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:01,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592367869] [2023-08-03 16:03:01,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:01,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:03:01,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:01,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592367869] [2023-08-03 16:03:01,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592367869] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:03:01,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:03:01,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 16:03:01,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998637644] [2023-08-03 16:03:01,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:03:01,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:03:01,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:01,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:03:01,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:03:01,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 152 [2023-08-03 16:03:01,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:01,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:01,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 152 [2023-08-03 16:03:01,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:02,084 INFO L124 PetriNetUnfolderBase]: 708/1328 cut-off events. [2023-08-03 16:03:02,084 INFO L125 PetriNetUnfolderBase]: For 663/663 co-relation queries the response was YES. [2023-08-03 16:03:02,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2947 conditions, 1328 events. 708/1328 cut-off events. For 663/663 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7551 event pairs, 313 based on Foata normal form. 0/1301 useless extension candidates. Maximal degree in co-relation 1766. Up to 631 conditions per place. [2023-08-03 16:03:02,091 INFO L140 encePairwiseOnDemand]: 144/152 looper letters, 38 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2023-08-03 16:03:02,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 252 flow [2023-08-03 16:03:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:03:02,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:03:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2023-08-03 16:03:02,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5921052631578947 [2023-08-03 16:03:02,093 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2023-08-03 16:03:02,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2023-08-03 16:03:02,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:02,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2023-08-03 16:03:02,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:02,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:02,095 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:02,095 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 94 flow. Second operand 3 states and 270 transitions. [2023-08-03 16:03:02,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 252 flow [2023-08-03 16:03:02,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 245 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-03 16:03:02,097 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 144 flow [2023-08-03 16:03:02,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-03 16:03:02,098 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-08-03 16:03:02,098 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 144 flow [2023-08-03 16:03:02,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:02,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:02,099 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:03:02,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 16:03:02,099 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:03:02,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:02,100 INFO L85 PathProgramCache]: Analyzing trace with hash -814781019, now seen corresponding path program 1 times [2023-08-03 16:03:02,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:02,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482588541] [2023-08-03 16:03:02,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:02,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:02,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:02,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482588541] [2023-08-03 16:03:02,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482588541] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:03:02,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951849384] [2023-08-03 16:03:02,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:02,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:02,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:02,149 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:03:02,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 16:03:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:02,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:03:02,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:03:02,238 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:02,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:03:02,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951849384] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:03:02,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:03:02,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:03:02,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877799910] [2023-08-03 16:03:02,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:03:02,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:03:02,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:02,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:03:02,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:03:02,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 152 [2023-08-03 16:03:02,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:02,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:02,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 152 [2023-08-03 16:03:02,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:02,359 INFO L124 PetriNetUnfolderBase]: 462/851 cut-off events. [2023-08-03 16:03:02,360 INFO L125 PetriNetUnfolderBase]: For 544/544 co-relation queries the response was YES. [2023-08-03 16:03:02,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2200 conditions, 851 events. 462/851 cut-off events. For 544/544 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4648 event pairs, 80 based on Foata normal form. 37/847 useless extension candidates. Maximal degree in co-relation 556. Up to 661 conditions per place. [2023-08-03 16:03:02,366 INFO L140 encePairwiseOnDemand]: 149/152 looper letters, 36 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-08-03 16:03:02,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 270 flow [2023-08-03 16:03:02,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:03:02,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:03:02,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 424 transitions. [2023-08-03 16:03:02,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578947368421052 [2023-08-03 16:03:02,368 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 424 transitions. [2023-08-03 16:03:02,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 424 transitions. [2023-08-03 16:03:02,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:02,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 424 transitions. [2023-08-03 16:03:02,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:02,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:02,371 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:02,371 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 144 flow. Second operand 5 states and 424 transitions. [2023-08-03 16:03:02,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 270 flow [2023-08-03 16:03:02,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 245 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 16:03:02,374 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 123 flow [2023-08-03 16:03:02,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-08-03 16:03:02,375 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-08-03 16:03:02,375 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 123 flow [2023-08-03 16:03:02,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:02,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:02,376 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:03:02,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 16:03:02,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:02,581 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:03:02,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:02,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1992328169, now seen corresponding path program 1 times [2023-08-03 16:03:02,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:02,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878234398] [2023-08-03 16:03:02,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:02,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 16:03:02,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:02,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878234398] [2023-08-03 16:03:02,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878234398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:03:02,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:03:02,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:03:02,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327541584] [2023-08-03 16:03:02,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:03:02,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:03:02,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:02,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:03:02,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:03:02,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 152 [2023-08-03 16:03:02,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:02,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:02,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 152 [2023-08-03 16:03:02,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:02,770 INFO L124 PetriNetUnfolderBase]: 235/589 cut-off events. [2023-08-03 16:03:02,770 INFO L125 PetriNetUnfolderBase]: For 490/494 co-relation queries the response was YES. [2023-08-03 16:03:02,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1442 conditions, 589 events. 235/589 cut-off events. For 490/494 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3327 event pairs, 86 based on Foata normal form. 68/653 useless extension candidates. Maximal degree in co-relation 631. Up to 270 conditions per place. [2023-08-03 16:03:02,774 INFO L140 encePairwiseOnDemand]: 145/152 looper letters, 36 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2023-08-03 16:03:02,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 272 flow [2023-08-03 16:03:02,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:03:02,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:03:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-08-03 16:03:02,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.581140350877193 [2023-08-03 16:03:02,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-08-03 16:03:02,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-08-03 16:03:02,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:02,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-08-03 16:03:02,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:02,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:02,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:02,777 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 123 flow. Second operand 3 states and 265 transitions. [2023-08-03 16:03:02,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 272 flow [2023-08-03 16:03:02,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 264 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:03:02,779 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 155 flow [2023-08-03 16:03:02,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-03 16:03:02,780 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-08-03 16:03:02,780 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 155 flow [2023-08-03 16:03:02,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:02,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:02,781 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:03:02,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 16:03:02,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:03:02,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:02,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1995533908, now seen corresponding path program 1 times [2023-08-03 16:03:02,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:02,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102550022] [2023-08-03 16:03:02,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:02,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:02,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:03:02,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:02,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102550022] [2023-08-03 16:03:02,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102550022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:03:02,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:03:02,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:03:02,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577587414] [2023-08-03 16:03:02,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:03:02,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:03:02,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:02,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:03:02,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:03:02,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 152 [2023-08-03 16:03:02,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:02,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:02,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 152 [2023-08-03 16:03:02,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:03,065 INFO L124 PetriNetUnfolderBase]: 350/802 cut-off events. [2023-08-03 16:03:03,065 INFO L125 PetriNetUnfolderBase]: For 711/717 co-relation queries the response was YES. [2023-08-03 16:03:03,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2395 conditions, 802 events. 350/802 cut-off events. For 711/717 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4642 event pairs, 56 based on Foata normal form. 55/856 useless extension candidates. Maximal degree in co-relation 875. Up to 260 conditions per place. [2023-08-03 16:03:03,069 INFO L140 encePairwiseOnDemand]: 140/152 looper letters, 56 selfloop transitions, 31 changer transitions 16/109 dead transitions. [2023-08-03 16:03:03,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 109 transitions, 652 flow [2023-08-03 16:03:03,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 16:03:03,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 16:03:03,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 618 transitions. [2023-08-03 16:03:03,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082236842105263 [2023-08-03 16:03:03,071 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 618 transitions. [2023-08-03 16:03:03,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 618 transitions. [2023-08-03 16:03:03,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:03,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 618 transitions. [2023-08-03 16:03:03,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.25) internal successors, (618), 8 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:03,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:03,075 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:03,075 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 155 flow. Second operand 8 states and 618 transitions. [2023-08-03 16:03:03,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 109 transitions, 652 flow [2023-08-03 16:03:03,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 109 transitions, 626 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:03:03,078 INFO L231 Difference]: Finished difference. Result has 51 places, 59 transitions, 337 flow [2023-08-03 16:03:03,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=337, PETRI_PLACES=51, PETRI_TRANSITIONS=59} [2023-08-03 16:03:03,079 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2023-08-03 16:03:03,079 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 59 transitions, 337 flow [2023-08-03 16:03:03,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:03,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:03,079 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:03:03,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 16:03:03,080 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:03:03,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:03,080 INFO L85 PathProgramCache]: Analyzing trace with hash 331147504, now seen corresponding path program 1 times [2023-08-03 16:03:03,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:03,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12098786] [2023-08-03 16:03:03,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:03,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:03:03,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:03,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12098786] [2023-08-03 16:03:03,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12098786] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:03:03,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829726648] [2023-08-03 16:03:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:03,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:03,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:03,191 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:03:03,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 16:03:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:03,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-03 16:03:03,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:03:03,320 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-03 16:03:03,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 16:03:03,363 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 16:03:03,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 16:03:03,383 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 16:03:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:03:03,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:03:03,444 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 16:03:03,445 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2023-08-03 16:03:03,449 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-08-03 16:03:03,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:03:03,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829726648] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:03:03,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:03:03,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-03 16:03:03,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572109889] [2023-08-03 16:03:03,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:03:03,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-03 16:03:03,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:03,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-03 16:03:03,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-08-03 16:03:03,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 152 [2023-08-03 16:03:03,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 59 transitions, 337 flow. Second operand has 10 states, 10 states have (on average 77.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:03,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:03,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 152 [2023-08-03 16:03:03,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:03,698 INFO L124 PetriNetUnfolderBase]: 36/130 cut-off events. [2023-08-03 16:03:03,699 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES. [2023-08-03 16:03:03,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 130 events. 36/130 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 452 event pairs, 16 based on Foata normal form. 8/138 useless extension candidates. Maximal degree in co-relation 449. Up to 84 conditions per place. [2023-08-03 16:03:03,699 INFO L140 encePairwiseOnDemand]: 146/152 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-08-03 16:03:03,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 28 transitions, 191 flow [2023-08-03 16:03:03,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:03:03,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:03:03,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 320 transitions. [2023-08-03 16:03:03,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2023-08-03 16:03:03,701 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 320 transitions. [2023-08-03 16:03:03,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 320 transitions. [2023-08-03 16:03:03,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:03,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 320 transitions. [2023-08-03 16:03:03,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:03,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:03,703 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:03,703 INFO L175 Difference]: Start difference. First operand has 51 places, 59 transitions, 337 flow. Second operand 4 states and 320 transitions. [2023-08-03 16:03:03,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 28 transitions, 191 flow [2023-08-03 16:03:03,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 28 transitions, 146 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-08-03 16:03:03,705 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-08-03 16:03:03,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-08-03 16:03:03,705 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2023-08-03 16:03:03,705 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-08-03 16:03:03,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:03,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 16:03:03,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 16:03:03,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 16:03:03,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 16:03:03,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:03,914 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:03:03,916 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:03:03,916 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:03:03,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:03:03 BasicIcfg [2023-08-03 16:03:03,919 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:03:03,919 INFO L158 Benchmark]: Toolchain (without parser) took 8451.00ms. Allocated memory was 503.3MB in the beginning and 604.0MB in the end (delta: 100.7MB). Free memory was 453.2MB in the beginning and 298.5MB in the end (delta: 154.7MB). Peak memory consumption was 256.9MB. Max. memory is 16.0GB. [2023-08-03 16:03:03,919 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 356.5MB. Free memory was 309.7MB in the beginning and 309.6MB in the end (delta: 65.6kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:03:03,920 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.85ms. Allocated memory is still 503.3MB. Free memory was 452.9MB in the beginning and 434.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 16:03:03,920 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.05ms. Allocated memory is still 503.3MB. Free memory was 434.0MB in the beginning and 432.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:03:03,920 INFO L158 Benchmark]: Boogie Preprocessor took 34.46ms. Allocated memory is still 503.3MB. Free memory was 432.0MB in the beginning and 430.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:03:03,920 INFO L158 Benchmark]: RCFGBuilder took 318.50ms. Allocated memory is still 503.3MB. Free memory was 430.5MB in the beginning and 466.9MB in the end (delta: -36.4MB). Peak memory consumption was 18.2MB. Max. memory is 16.0GB. [2023-08-03 16:03:03,921 INFO L158 Benchmark]: TraceAbstraction took 7673.47ms. Allocated memory was 503.3MB in the beginning and 604.0MB in the end (delta: 100.7MB). Free memory was 466.9MB in the beginning and 298.5MB in the end (delta: 168.4MB). Peak memory consumption was 268.0MB. Max. memory is 16.0GB. [2023-08-03 16:03:03,922 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 356.5MB. Free memory was 309.7MB in the beginning and 309.6MB in the end (delta: 65.6kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 359.85ms. Allocated memory is still 503.3MB. Free memory was 452.9MB in the beginning and 434.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.05ms. Allocated memory is still 503.3MB. Free memory was 434.0MB in the beginning and 432.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.46ms. Allocated memory is still 503.3MB. Free memory was 432.0MB in the beginning and 430.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 318.50ms. Allocated memory is still 503.3MB. Free memory was 430.5MB in the beginning and 466.9MB in the end (delta: -36.4MB). Peak memory consumption was 18.2MB. Max. memory is 16.0GB. * TraceAbstraction took 7673.47ms. Allocated memory was 503.3MB in the beginning and 604.0MB in the end (delta: 100.7MB). Free memory was 466.9MB in the beginning and 298.5MB in the end (delta: 168.4MB). Peak memory consumption was 268.0MB. 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: 2.0s, 70 PlacesBefore, 20 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 720 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 57 TotalNumberOfCompositions, 1769 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 807, independent: 688, independent conditional: 0, independent unconditional: 688, dependent: 119, dependent conditional: 0, dependent unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 387, independent: 364, independent conditional: 0, independent unconditional: 364, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 807, independent: 324, independent conditional: 0, independent unconditional: 324, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 387, unknown conditional: 0, unknown unconditional: 387] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 85 PlacesBefore, 33 PlacesAfterwards, 82 TransitionsBefore, 29 TransitionsAfterwards, 1752 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 62 TotalNumberOfCompositions, 5728 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1851, independent: 1638, independent conditional: 0, independent unconditional: 1638, dependent: 213, dependent conditional: 0, dependent unconditional: 213, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 853, independent: 810, independent conditional: 0, independent unconditional: 810, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1851, independent: 828, independent conditional: 0, independent unconditional: 828, dependent: 170, dependent conditional: 0, dependent unconditional: 170, unknown: 853, unknown conditional: 0, unknown unconditional: 853] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 48 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 74 IncrementalHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 74 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 4 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 43 SizeOfPredicates, 0 NumberOfNonLiveVariables, 104 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, 101 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.5s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 350 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 258 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 91 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 774 IncrementalHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 91 mSolverCounterUnsat, 11 mSDtfsCounter, 774 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=337occurred in iteration=6, InterpolantAutomatonStates: 30, 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, 0.7s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 120 ConstructedInterpolants, 7 QuantifiedInterpolants, 616 SizeOfPredicates, 3 NumberOfNonLiveVariables, 374 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 41/55 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 16:03:03,945 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...