/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_29_conditionals_vs_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:56:21,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:56:21,112 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:56:21,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:56:21,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:56:21,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:56:21,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:56:21,142 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:56:21,142 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:56:21,146 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:56:21,146 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:56:21,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:56:21,147 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:56:21,148 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:56:21,148 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:56:21,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:56:21,149 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:56:21,149 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:56:21,149 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:56:21,149 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:56:21,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:56:21,150 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:56:21,150 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:56:21,150 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:56:21,151 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:56:21,152 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:56:21,152 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:56:21,152 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:56:21,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:56:21,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:56:21,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:56:21,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:56:21,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:56:21,154 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:56:21,154 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:56:21,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:56:21,155 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:56:21,155 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:56:21,155 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:56:21,155 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:56:21,155 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:56:21,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 21:56:21,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:56:21,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:56:21,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:56:21,350 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:56:21,350 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:56:21,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_29_conditionals_vs_bound2.i [2023-08-03 21:56:22,393 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:56:22,591 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:56:22,592 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_29_conditionals_vs_bound2.i [2023-08-03 21:56:22,603 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6033b609/b61fd981ed1349c8861ca6ac21dba689/FLAG026ab76c3 [2023-08-03 21:56:22,614 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6033b609/b61fd981ed1349c8861ca6ac21dba689 [2023-08-03 21:56:22,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:56:22,618 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:56:22,619 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:56:22,619 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:56:22,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:56:22,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:56:22" (1/1) ... [2023-08-03 21:56:22,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f2ab26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:56:22, skipping insertion in model container [2023-08-03 21:56:22,623 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:56:22" (1/1) ... [2023-08-03 21:56:22,656 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:56:22,876 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_29_conditionals_vs_bound2.i[30422,30435] [2023-08-03 21:56:22,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:56:22,890 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:56:22,906 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-03 21:56:22,908 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-03 21:56:22,919 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_29_conditionals_vs_bound2.i[30422,30435] [2023-08-03 21:56:22,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:56:22,946 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:56:22,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:56:22 WrapperNode [2023-08-03 21:56:22,947 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:56:22,948 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:56:22,948 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:56:22,948 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:56:22,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:56:22" (1/1) ... [2023-08-03 21:56:22,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:56:22" (1/1) ... [2023-08-03 21:56:22,988 INFO L138 Inliner]: procedures = 170, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 65 [2023-08-03 21:56:22,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:56:22,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:56:22,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:56:22,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:56:22,997 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:56:22" (1/1) ... [2023-08-03 21:56:22,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:56:22" (1/1) ... [2023-08-03 21:56:22,999 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:56:22" (1/1) ... [2023-08-03 21:56:22,999 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:56:22" (1/1) ... [2023-08-03 21:56:23,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:56:22" (1/1) ... [2023-08-03 21:56:23,006 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:56:22" (1/1) ... [2023-08-03 21:56:23,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:56:22" (1/1) ... [2023-08-03 21:56:23,018 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:56:22" (1/1) ... [2023-08-03 21:56:23,020 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:56:23,020 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:56:23,020 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:56:23,020 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:56:23,021 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:56:22" (1/1) ... [2023-08-03 21:56:23,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:56:23,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:56:23,503 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 21:56:23,504 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 21:56:23,529 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 21:56:23,529 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 21:56:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:56:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:56:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:56:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:56:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:56:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:56:23,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:56:23,533 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 21:56:23,635 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:56:23,636 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:56:23,736 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:56:23,771 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:56:23,773 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 21:56:23,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:56:23 BoogieIcfgContainer [2023-08-03 21:56:23,775 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:56:23,776 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:56:23,776 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:56:23,779 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:56:23,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:56:22" (1/3) ... [2023-08-03 21:56:23,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248e9d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:56:23, skipping insertion in model container [2023-08-03 21:56:23,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:56:22" (2/3) ... [2023-08-03 21:56:23,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248e9d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:56:23, skipping insertion in model container [2023-08-03 21:56:23,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:56:23" (3/3) ... [2023-08-03 21:56:23,781 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_29_conditionals_vs_bound2.i [2023-08-03 21:56:23,788 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:56:23,795 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:56:23,796 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:56:23,796 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:56:23,835 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 21:56:23,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 58 transitions, 121 flow [2023-08-03 21:56:23,906 INFO L124 PetriNetUnfolderBase]: 6/68 cut-off events. [2023-08-03 21:56:23,906 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:56:23,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 68 events. 6/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2023-08-03 21:56:23,911 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 58 transitions, 121 flow [2023-08-03 21:56:23,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 58 transitions, 121 flow [2023-08-03 21:56:23,916 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:56:23,925 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 58 transitions, 121 flow [2023-08-03 21:56:23,926 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 58 transitions, 121 flow [2023-08-03 21:56:23,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 58 transitions, 121 flow [2023-08-03 21:56:23,941 INFO L124 PetriNetUnfolderBase]: 6/68 cut-off events. [2023-08-03 21:56:23,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:56:23,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 68 events. 6/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2023-08-03 21:56:23,943 INFO L119 LiptonReduction]: Number of co-enabled transitions 928 [2023-08-03 21:56:25,902 INFO L134 LiptonReduction]: Checked pairs total: 699 [2023-08-03 21:56:25,902 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-08-03 21:56:25,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:56:25,920 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;@44fb59d1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:56:25,920 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:56:25,923 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:56:25,923 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-03 21:56:25,923 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:56:25,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:56:25,924 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 21:56:25,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:56:25,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:56:25,928 INFO L85 PathProgramCache]: Analyzing trace with hash 91152444, now seen corresponding path program 1 times [2023-08-03 21:56:25,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:56:25,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603733368] [2023-08-03 21:56:25,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:56:25,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:56:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:56:26,029 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:56:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:56:26,088 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:56:26,090 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:56:26,091 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:56:26,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:56:26,093 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:56:26,097 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 21:56:26,098 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 21:56:26,098 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 21:56:26,119 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 21:56:26,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 88 transitions, 188 flow [2023-08-03 21:56:26,166 INFO L124 PetriNetUnfolderBase]: 11/113 cut-off events. [2023-08-03 21:56:26,167 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:56:26,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 113 events. 11/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 197 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2023-08-03 21:56:26,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 88 transitions, 188 flow [2023-08-03 21:56:26,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 88 transitions, 188 flow [2023-08-03 21:56:26,170 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:56:26,170 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 88 transitions, 188 flow [2023-08-03 21:56:26,171 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 88 transitions, 188 flow [2023-08-03 21:56:26,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 88 transitions, 188 flow [2023-08-03 21:56:26,187 INFO L124 PetriNetUnfolderBase]: 11/113 cut-off events. [2023-08-03 21:56:26,187 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:56:26,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 113 events. 11/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 197 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2023-08-03 21:56:26,199 INFO L119 LiptonReduction]: Number of co-enabled transitions 3596 [2023-08-03 21:56:28,367 INFO L134 LiptonReduction]: Checked pairs total: 3004 [2023-08-03 21:56:28,367 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-08-03 21:56:28,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:56:28,370 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;@44fb59d1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:56:28,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:56:28,376 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:56:28,376 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-08-03 21:56:28,376 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:56:28,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:56:28,376 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 21:56:28,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:56:28,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:56:28,377 INFO L85 PathProgramCache]: Analyzing trace with hash -107180177, now seen corresponding path program 1 times [2023-08-03 21:56:28,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:56:28,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119723237] [2023-08-03 21:56:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:56:28,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:56:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:56:28,517 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 21:56:28,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:56:28,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119723237] [2023-08-03 21:56:28,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119723237] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:56:28,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253584478] [2023-08-03 21:56:28,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:56:28,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:56:28,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:56:28,521 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 21:56:28,525 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 21:56:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:56:28,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:56:28,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:56:28,652 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 21:56:28,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:56:28,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253584478] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:56:28,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:56:28,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 21:56:28,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252838331] [2023-08-03 21:56:28,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:56:28,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:56:28,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:56:28,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:56:28,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:56:28,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-03 21:56:28,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 21:56:28,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:56:28,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-03 21:56:28,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:56:28,736 INFO L124 PetriNetUnfolderBase]: 36/82 cut-off events. [2023-08-03 21:56:28,736 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 21:56:28,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 82 events. 36/82 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 193 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 45. Up to 48 conditions per place. [2023-08-03 21:56:28,738 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2023-08-03 21:56:28,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 21 transitions, 90 flow [2023-08-03 21:56:28,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:56:28,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:56:28,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2023-08-03 21:56:28,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4335195530726257 [2023-08-03 21:56:28,758 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 388 transitions. [2023-08-03 21:56:28,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 388 transitions. [2023-08-03 21:56:28,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:56:28,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 388 transitions. [2023-08-03 21:56:28,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states 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 21:56:28,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states 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 21:56:28,772 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states 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 21:56:28,774 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 44 flow. Second operand 5 states and 388 transitions. [2023-08-03 21:56:28,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 21 transitions, 90 flow [2023-08-03 21:56:28,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 21 transitions, 89 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:56:28,778 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-03 21:56:28,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-03 21:56:28,787 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2023-08-03 21:56:28,787 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-03 21:56:28,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 21:56:28,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:56:28,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 21:56:28,997 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 21:56:28,997 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:56:28,998 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 21:56:29,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 88 transitions, 188 flow [2023-08-03 21:56:29,009 INFO L124 PetriNetUnfolderBase]: 11/113 cut-off events. [2023-08-03 21:56:29,009 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:56:29,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 113 events. 11/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 197 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2023-08-03 21:56:29,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 88 transitions, 188 flow [2023-08-03 21:56:29,011 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 88 transitions, 188 flow [2023-08-03 21:56:29,011 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:56:29,011 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 88 transitions, 188 flow [2023-08-03 21:56:29,012 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 88 transitions, 188 flow [2023-08-03 21:56:29,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 88 transitions, 188 flow [2023-08-03 21:56:29,020 INFO L124 PetriNetUnfolderBase]: 11/113 cut-off events. [2023-08-03 21:56:29,020 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:56:29,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 113 events. 11/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 197 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2023-08-03 21:56:29,023 INFO L119 LiptonReduction]: Number of co-enabled transitions 3596 [2023-08-03 21:56:31,088 INFO L134 LiptonReduction]: Checked pairs total: 3004 [2023-08-03 21:56:31,089 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-08-03 21:56:31,091 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:56:31,092 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;@44fb59d1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:56:31,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 21:56:31,094 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:56:31,094 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-03 21:56:31,094 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:56:31,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:56:31,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 21:56:31,094 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:56:31,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:56:31,095 INFO L85 PathProgramCache]: Analyzing trace with hash 18225436, now seen corresponding path program 1 times [2023-08-03 21:56:31,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:56:31,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594703273] [2023-08-03 21:56:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:56:31,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:56:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:56:31,113 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 21:56:31,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:56:31,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594703273] [2023-08-03 21:56:31,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594703273] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:56:31,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:56:31,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 21:56:31,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624162509] [2023-08-03 21:56:31,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:56:31,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 21:56:31,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:56:31,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 21:56:31,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 21:56:31,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2023-08-03 21:56:31,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 44 flow. Second operand has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 21:56:31,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:56:31,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2023-08-03 21:56:31,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:56:31,138 INFO L124 PetriNetUnfolderBase]: 48/106 cut-off events. [2023-08-03 21:56:31,139 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-03 21:56:31,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 106 events. 48/106 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 334 event pairs, 48 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 59. Up to 100 conditions per place. [2023-08-03 21:56:31,139 INFO L140 encePairwiseOnDemand]: 176/179 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-03 21:56:31,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 12 transitions, 56 flow [2023-08-03 21:56:31,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-03 21:56:31,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-03 21:56:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 167 transitions. [2023-08-03 21:56:31,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4664804469273743 [2023-08-03 21:56:31,141 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 167 transitions. [2023-08-03 21:56:31,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 167 transitions. [2023-08-03 21:56:31,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:56:31,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 167 transitions. [2023-08-03 21:56:31,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 21:56:31,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:56:31,143 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:56:31,143 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 44 flow. Second operand 2 states and 167 transitions. [2023-08-03 21:56:31,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 12 transitions, 56 flow [2023-08-03 21:56:31,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 54 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 21:56:31,144 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-03 21:56:31,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-03 21:56:31,145 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -2 predicate places. [2023-08-03 21:56:31,145 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-03 21:56:31,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 21:56:31,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 21:56:31,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 21:56:31,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 21:56:31,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 21:56:31,146 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:56:31,147 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (2/2) [2023-08-03 21:56:31,149 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 21:56:31,149 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:56:31,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:56:31 BasicIcfg [2023-08-03 21:56:31,155 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:56:31,155 INFO L158 Benchmark]: Toolchain (without parser) took 8537.41ms. Allocated memory is still 660.6MB. Free memory was 607.2MB in the beginning and 387.6MB in the end (delta: 219.6MB). Peak memory consumption was 221.7MB. Max. memory is 16.0GB. [2023-08-03 21:56:31,155 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 367.0MB. Free memory is still 314.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:56:31,156 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.64ms. Allocated memory is still 660.6MB. Free memory was 606.9MB in the beginning and 587.6MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 21:56:31,156 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.69ms. Allocated memory is still 660.6MB. Free memory was 587.6MB in the beginning and 585.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:56:31,156 INFO L158 Benchmark]: Boogie Preprocessor took 30.58ms. Allocated memory is still 660.6MB. Free memory was 585.6MB in the beginning and 584.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:56:31,157 INFO L158 Benchmark]: RCFGBuilder took 754.50ms. Allocated memory is still 660.6MB. Free memory was 584.2MB in the beginning and 570.5MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 21:56:31,157 INFO L158 Benchmark]: TraceAbstraction took 7378.59ms. Allocated memory is still 660.6MB. Free memory was 569.8MB in the beginning and 387.6MB in the end (delta: 182.2MB). Peak memory consumption was 183.9MB. Max. memory is 16.0GB. [2023-08-03 21:56:31,159 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 367.0MB. Free memory is still 314.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 328.64ms. Allocated memory is still 660.6MB. Free memory was 606.9MB in the beginning and 587.6MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.69ms. Allocated memory is still 660.6MB. Free memory was 587.6MB in the beginning and 585.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.58ms. Allocated memory is still 660.6MB. Free memory was 585.6MB in the beginning and 584.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 754.50ms. Allocated memory is still 660.6MB. Free memory was 584.2MB in the beginning and 570.5MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 7378.59ms. Allocated memory is still 660.6MB. Free memory was 569.8MB in the beginning and 387.6MB in the end (delta: 182.2MB). Peak memory consumption was 183.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 254]: Unsoundness Warning unspecified type, defaulting to int C: short [254] - GenericResultAtLocation [Line: 254]: Unsoundness Warning unspecified type, defaulting to int C: short [254] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 56 PlacesBefore, 11 PlacesAfterwards, 58 TransitionsBefore, 8 TransitionsAfterwards, 928 CoEnabledTransitionPairs, 6 FixpointIterations, 11 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 62 TotalNumberOfCompositions, 699 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 699, independent: 699, independent conditional: 0, independent unconditional: 699, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 447, independent: 447, independent conditional: 0, independent unconditional: 447, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 699, independent: 252, independent conditional: 0, independent unconditional: 252, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 447, unknown conditional: 0, unknown unconditional: 447] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 84 PlacesBefore, 20 PlacesAfterwards, 88 TransitionsBefore, 16 TransitionsAfterwards, 3596 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 8 ChoiceCompositions, 91 TotalNumberOfCompositions, 3004 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2763, independent: 2736, independent conditional: 0, independent unconditional: 2736, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1864, independent: 1847, independent conditional: 0, independent unconditional: 1847, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2763, independent: 889, independent conditional: 0, independent unconditional: 889, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 1864, unknown conditional: 0, unknown unconditional: 1864] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 84 PlacesBefore, 20 PlacesAfterwards, 88 TransitionsBefore, 16 TransitionsAfterwards, 3596 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 8 ChoiceCompositions, 91 TotalNumberOfCompositions, 3004 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2751, independent: 2724, independent conditional: 0, independent unconditional: 2724, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1865, independent: 1847, independent conditional: 0, independent unconditional: 1847, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2751, independent: 877, independent conditional: 0, independent unconditional: 877, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 1865, unknown conditional: 0, unknown unconditional: 1865] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 718]: 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 for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 80 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: 2.2s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 86 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 21:56:31,178 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...