./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label59.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label59.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7803525370200aabfab7aff9768b555209ce32125d445cdaf8def0c5a28cd1e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 20:18:40,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 20:18:40,871 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 20:18:40,874 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 20:18:40,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 20:18:40,909 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 20:18:40,910 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 20:18:40,910 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 20:18:40,911 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 20:18:40,912 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 20:18:40,914 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 20:18:40,914 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 20:18:40,915 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 20:18:40,915 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 20:18:40,915 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 20:18:40,916 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 20:18:40,916 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 20:18:40,916 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 20:18:40,917 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 20:18:40,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 20:18:40,921 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 20:18:40,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 20:18:40,922 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 20:18:40,922 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 20:18:40,923 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 20:18:40,923 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 20:18:40,923 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 20:18:40,924 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 20:18:40,924 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 20:18:40,924 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 20:18:40,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 20:18:40,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 20:18:40,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:18:40,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 20:18:40,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 20:18:40,927 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 20:18:40,927 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 20:18:40,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 20:18:40,928 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 20:18:40,928 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 20:18:40,928 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 20:18:40,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 20:18:40,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7803525370200aabfab7aff9768b555209ce32125d445cdaf8def0c5a28cd1e [2024-10-23 20:18:41,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 20:18:41,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 20:18:41,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 20:18:41,203 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 20:18:41,203 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 20:18:41,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label59.c [2024-10-23 20:18:42,661 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 20:18:42,925 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 20:18:42,926 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label59.c [2024-10-23 20:18:42,942 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7302a1076/35b5cb2ac23741d5be827637633f7939/FLAG15db85604 [2024-10-23 20:18:42,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7302a1076/35b5cb2ac23741d5be827637633f7939 [2024-10-23 20:18:42,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 20:18:42,966 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 20:18:42,968 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 20:18:42,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 20:18:42,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 20:18:42,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:18:42" (1/1) ... [2024-10-23 20:18:42,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d12f9b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:42, skipping insertion in model container [2024-10-23 20:18:42,976 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:18:42" (1/1) ... [2024-10-23 20:18:43,023 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 20:18:43,324 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label59.c[16624,16637] [2024-10-23 20:18:43,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:18:43,424 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 20:18:43,539 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label59.c[16624,16637] [2024-10-23 20:18:43,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:18:43,587 INFO L204 MainTranslator]: Completed translation [2024-10-23 20:18:43,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:43 WrapperNode [2024-10-23 20:18:43,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 20:18:43,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 20:18:43,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 20:18:43,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 20:18:43,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:43" (1/1) ... [2024-10-23 20:18:43,616 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:43" (1/1) ... [2024-10-23 20:18:43,663 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 658 [2024-10-23 20:18:43,664 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 20:18:43,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 20:18:43,664 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 20:18:43,665 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 20:18:43,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:43" (1/1) ... [2024-10-23 20:18:43,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:43" (1/1) ... [2024-10-23 20:18:43,683 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:43" (1/1) ... [2024-10-23 20:18:43,720 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-23 20:18:43,720 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:43" (1/1) ... [2024-10-23 20:18:43,722 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:43" (1/1) ... [2024-10-23 20:18:43,745 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:43" (1/1) ... [2024-10-23 20:18:43,754 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:43" (1/1) ... [2024-10-23 20:18:43,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:43" (1/1) ... [2024-10-23 20:18:43,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:43" (1/1) ... [2024-10-23 20:18:43,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 20:18:43,782 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 20:18:43,782 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 20:18:43,782 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 20:18:43,783 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:43" (1/1) ... [2024-10-23 20:18:43,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:18:43,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:18:43,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 20:18:43,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 20:18:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 20:18:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 20:18:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 20:18:43,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 20:18:43,960 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 20:18:43,962 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 20:18:44,897 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-10-23 20:18:44,897 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 20:18:44,970 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 20:18:44,971 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 20:18:44,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:18:44 BoogieIcfgContainer [2024-10-23 20:18:44,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 20:18:44,975 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 20:18:44,975 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 20:18:44,978 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 20:18:44,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:18:42" (1/3) ... [2024-10-23 20:18:44,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@154d4fd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:18:44, skipping insertion in model container [2024-10-23 20:18:44,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:43" (2/3) ... [2024-10-23 20:18:44,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@154d4fd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:18:44, skipping insertion in model container [2024-10-23 20:18:44,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:18:44" (3/3) ... [2024-10-23 20:18:44,982 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label59.c [2024-10-23 20:18:44,999 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 20:18:44,999 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 20:18:45,058 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 20:18:45,066 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@73224d1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 20:18:45,067 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 20:18:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 134 states have (on average 1.9776119402985075) internal successors, (265), 135 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) [2024-10-23 20:18:45,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-23 20:18:45,079 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:45,080 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:45,080 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:45,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:45,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2086255769, now seen corresponding path program 1 times [2024-10-23 20:18:45,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:45,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565854942] [2024-10-23 20:18:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:45,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:18:45,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:45,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565854942] [2024-10-23 20:18:45,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565854942] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:45,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:18:45,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:18:45,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081561242] [2024-10-23 20:18:45,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:45,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 20:18:45,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:45,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 20:18:45,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 20:18:45,516 INFO L87 Difference]: Start difference. First operand has 136 states, 134 states have (on average 1.9776119402985075) internal successors, (265), 135 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) Second operand has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 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) [2024-10-23 20:18:45,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:45,566 INFO L93 Difference]: Finished difference Result 271 states and 529 transitions. [2024-10-23 20:18:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 20:18:45,569 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 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) Word has length 88 [2024-10-23 20:18:45,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:45,577 INFO L225 Difference]: With dead ends: 271 [2024-10-23 20:18:45,577 INFO L226 Difference]: Without dead ends: 134 [2024-10-23 20:18:45,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 20:18:45,583 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:45,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 20:18:45,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-10-23 20:18:45,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-10-23 20:18:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.5037593984962405) internal successors, (200), 133 states have internal predecessors, (200), 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) [2024-10-23 20:18:45,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 200 transitions. [2024-10-23 20:18:45,619 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 200 transitions. Word has length 88 [2024-10-23 20:18:45,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:45,620 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 200 transitions. [2024-10-23 20:18:45,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 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) [2024-10-23 20:18:45,620 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 200 transitions. [2024-10-23 20:18:45,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-23 20:18:45,622 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:45,623 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:45,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 20:18:45,625 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:45,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:45,626 INFO L85 PathProgramCache]: Analyzing trace with hash -458545578, now seen corresponding path program 1 times [2024-10-23 20:18:45,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:45,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986567705] [2024-10-23 20:18:45,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:45,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:45,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:18:45,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:45,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986567705] [2024-10-23 20:18:45,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986567705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:45,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:18:45,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:18:45,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068370308] [2024-10-23 20:18:45,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:45,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:45,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:45,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:45,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:45,889 INFO L87 Difference]: Start difference. First operand 134 states and 200 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2024-10-23 20:18:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:46,458 INFO L93 Difference]: Finished difference Result 398 states and 597 transitions. [2024-10-23 20:18:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:46,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) Word has length 88 [2024-10-23 20:18:46,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:46,461 INFO L225 Difference]: With dead ends: 398 [2024-10-23 20:18:46,462 INFO L226 Difference]: Without dead ends: 265 [2024-10-23 20:18:46,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:46,466 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 56 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:46,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 23 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 20:18:46,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-10-23 20:18:46,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2024-10-23 20:18:46,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.4583333333333333) internal successors, (385), 264 states have internal predecessors, (385), 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) [2024-10-23 20:18:46,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 385 transitions. [2024-10-23 20:18:46,504 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 385 transitions. Word has length 88 [2024-10-23 20:18:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:46,508 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 385 transitions. [2024-10-23 20:18:46,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2024-10-23 20:18:46,508 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 385 transitions. [2024-10-23 20:18:46,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-23 20:18:46,514 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:46,514 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:46,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 20:18:46,515 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:46,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:46,515 INFO L85 PathProgramCache]: Analyzing trace with hash -668316637, now seen corresponding path program 1 times [2024-10-23 20:18:46,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:46,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339370430] [2024-10-23 20:18:46,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:46,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:18:46,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:46,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339370430] [2024-10-23 20:18:46,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339370430] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:46,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:18:46,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:18:46,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50616746] [2024-10-23 20:18:46,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:46,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:46,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:46,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:46,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:46,682 INFO L87 Difference]: Start difference. First operand 265 states and 385 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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) [2024-10-23 20:18:47,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:47,125 INFO L93 Difference]: Finished difference Result 791 states and 1152 transitions. [2024-10-23 20:18:47,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:47,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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) Word has length 94 [2024-10-23 20:18:47,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:47,129 INFO L225 Difference]: With dead ends: 791 [2024-10-23 20:18:47,129 INFO L226 Difference]: Without dead ends: 527 [2024-10-23 20:18:47,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:47,131 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 142 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:47,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 34 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 20:18:47,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-10-23 20:18:47,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2024-10-23 20:18:47,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.3802281368821292) internal successors, (726), 526 states have internal predecessors, (726), 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) [2024-10-23 20:18:47,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 726 transitions. [2024-10-23 20:18:47,166 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 726 transitions. Word has length 94 [2024-10-23 20:18:47,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:47,167 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 726 transitions. [2024-10-23 20:18:47,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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) [2024-10-23 20:18:47,167 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 726 transitions. [2024-10-23 20:18:47,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-23 20:18:47,170 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:47,170 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:47,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 20:18:47,171 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:47,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:47,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1330258717, now seen corresponding path program 1 times [2024-10-23 20:18:47,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:47,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50212847] [2024-10-23 20:18:47,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:47,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:47,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:18:47,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:47,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50212847] [2024-10-23 20:18:47,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50212847] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:47,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:18:47,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:18:47,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101972182] [2024-10-23 20:18:47,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:47,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:47,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:47,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:47,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:47,352 INFO L87 Difference]: Start difference. First operand 527 states and 726 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-10-23 20:18:47,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:47,810 INFO L93 Difference]: Finished difference Result 1446 states and 1990 transitions. [2024-10-23 20:18:47,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:47,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) Word has length 95 [2024-10-23 20:18:47,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:47,814 INFO L225 Difference]: With dead ends: 1446 [2024-10-23 20:18:47,814 INFO L226 Difference]: Without dead ends: 920 [2024-10-23 20:18:47,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:47,817 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 45 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:47,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 208 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 20:18:47,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-10-23 20:18:47,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 658. [2024-10-23 20:18:47,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 657 states have (on average 1.3409436834094368) internal successors, (881), 657 states have internal predecessors, (881), 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) [2024-10-23 20:18:47,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 881 transitions. [2024-10-23 20:18:47,834 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 881 transitions. Word has length 95 [2024-10-23 20:18:47,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:47,835 INFO L471 AbstractCegarLoop]: Abstraction has 658 states and 881 transitions. [2024-10-23 20:18:47,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-10-23 20:18:47,835 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 881 transitions. [2024-10-23 20:18:47,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-10-23 20:18:47,839 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:47,839 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:47,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 20:18:47,839 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:47,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:47,844 INFO L85 PathProgramCache]: Analyzing trace with hash 793822674, now seen corresponding path program 1 times [2024-10-23 20:18:47,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:47,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195693951] [2024-10-23 20:18:47,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:47,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:18:48,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:48,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195693951] [2024-10-23 20:18:48,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195693951] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:48,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:18:48,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:18:48,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124355081] [2024-10-23 20:18:48,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:48,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:48,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:48,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:48,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:48,025 INFO L87 Difference]: Start difference. First operand 658 states and 881 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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) [2024-10-23 20:18:48,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:48,452 INFO L93 Difference]: Finished difference Result 1970 states and 2640 transitions. [2024-10-23 20:18:48,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:48,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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) Word has length 101 [2024-10-23 20:18:48,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:48,458 INFO L225 Difference]: With dead ends: 1970 [2024-10-23 20:18:48,458 INFO L226 Difference]: Without dead ends: 1182 [2024-10-23 20:18:48,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:48,464 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 135 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:48,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 52 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 20:18:48,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2024-10-23 20:18:48,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1182. [2024-10-23 20:18:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1181 states have (on average 1.174428450465707) internal successors, (1387), 1181 states have internal predecessors, (1387), 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) [2024-10-23 20:18:48,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1387 transitions. [2024-10-23 20:18:48,493 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1387 transitions. Word has length 101 [2024-10-23 20:18:48,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:48,494 INFO L471 AbstractCegarLoop]: Abstraction has 1182 states and 1387 transitions. [2024-10-23 20:18:48,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 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) [2024-10-23 20:18:48,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1387 transitions. [2024-10-23 20:18:48,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-23 20:18:48,497 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:48,497 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:48,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 20:18:48,498 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:48,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:48,499 INFO L85 PathProgramCache]: Analyzing trace with hash 776901032, now seen corresponding path program 1 times [2024-10-23 20:18:48,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:48,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955255203] [2024-10-23 20:18:48,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:48,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:48,628 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-23 20:18:48,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:48,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955255203] [2024-10-23 20:18:48,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955255203] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:48,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:18:48,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:18:48,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040052713] [2024-10-23 20:18:48,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:48,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:48,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:48,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:48,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:48,631 INFO L87 Difference]: Start difference. First operand 1182 states and 1387 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-10-23 20:18:49,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:49,001 INFO L93 Difference]: Finished difference Result 2756 states and 3261 transitions. [2024-10-23 20:18:49,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:49,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) Word has length 114 [2024-10-23 20:18:49,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:49,011 INFO L225 Difference]: With dead ends: 2756 [2024-10-23 20:18:49,011 INFO L226 Difference]: Without dead ends: 1706 [2024-10-23 20:18:49,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:49,014 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 129 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:49,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 37 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 20:18:49,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2024-10-23 20:18:49,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1444. [2024-10-23 20:18:49,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 1.1753291753291752) internal successors, (1696), 1443 states have internal predecessors, (1696), 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) [2024-10-23 20:18:49,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1696 transitions. [2024-10-23 20:18:49,047 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1696 transitions. Word has length 114 [2024-10-23 20:18:49,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:49,047 INFO L471 AbstractCegarLoop]: Abstraction has 1444 states and 1696 transitions. [2024-10-23 20:18:49,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-10-23 20:18:49,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1696 transitions. [2024-10-23 20:18:49,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-10-23 20:18:49,052 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:49,052 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:49,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 20:18:49,053 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:49,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:49,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1811210671, now seen corresponding path program 1 times [2024-10-23 20:18:49,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:49,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087476226] [2024-10-23 20:18:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:49,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:49,225 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-23 20:18:49,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:49,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087476226] [2024-10-23 20:18:49,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087476226] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:49,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:18:49,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:18:49,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869968301] [2024-10-23 20:18:49,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:49,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:49,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:49,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:49,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:49,228 INFO L87 Difference]: Start difference. First operand 1444 states and 1696 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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) [2024-10-23 20:18:49,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:49,595 INFO L93 Difference]: Finished difference Result 2887 states and 3406 transitions. [2024-10-23 20:18:49,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:49,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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) Word has length 116 [2024-10-23 20:18:49,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:49,600 INFO L225 Difference]: With dead ends: 2887 [2024-10-23 20:18:49,600 INFO L226 Difference]: Without dead ends: 1575 [2024-10-23 20:18:49,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:49,605 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 119 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:49,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 52 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 20:18:49,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2024-10-23 20:18:49,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1575. [2024-10-23 20:18:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1574 states have (on average 1.1658195679796697) internal successors, (1835), 1574 states have internal predecessors, (1835), 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) [2024-10-23 20:18:49,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 1835 transitions. [2024-10-23 20:18:49,635 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 1835 transitions. Word has length 116 [2024-10-23 20:18:49,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:49,635 INFO L471 AbstractCegarLoop]: Abstraction has 1575 states and 1835 transitions. [2024-10-23 20:18:49,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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) [2024-10-23 20:18:49,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 1835 transitions. [2024-10-23 20:18:49,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-23 20:18:49,638 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:49,638 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:49,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 20:18:49,638 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:49,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:49,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1607658265, now seen corresponding path program 1 times [2024-10-23 20:18:49,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:49,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739545702] [2024-10-23 20:18:49,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:49,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-23 20:18:49,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:49,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739545702] [2024-10-23 20:18:49,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739545702] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:49,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:18:49,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:18:49,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570062060] [2024-10-23 20:18:49,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:49,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:18:49,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:49,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:18:49,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:18:49,853 INFO L87 Difference]: Start difference. First operand 1575 states and 1835 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2024-10-23 20:18:50,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:50,382 INFO L93 Difference]: Finished difference Result 3280 states and 3835 transitions. [2024-10-23 20:18:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:18:50,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 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) Word has length 120 [2024-10-23 20:18:50,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:50,389 INFO L225 Difference]: With dead ends: 3280 [2024-10-23 20:18:50,389 INFO L226 Difference]: Without dead ends: 1837 [2024-10-23 20:18:50,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:18:50,392 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 370 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:50,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 52 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 20:18:50,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2024-10-23 20:18:50,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1706. [2024-10-23 20:18:50,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1706 states, 1705 states have (on average 1.1548387096774193) internal successors, (1969), 1705 states have internal predecessors, (1969), 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) [2024-10-23 20:18:50,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 1969 transitions. [2024-10-23 20:18:50,422 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 1969 transitions. Word has length 120 [2024-10-23 20:18:50,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:50,422 INFO L471 AbstractCegarLoop]: Abstraction has 1706 states and 1969 transitions. [2024-10-23 20:18:50,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2024-10-23 20:18:50,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 1969 transitions. [2024-10-23 20:18:50,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-10-23 20:18:50,425 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:50,425 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:50,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 20:18:50,425 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:50,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:50,425 INFO L85 PathProgramCache]: Analyzing trace with hash -995916390, now seen corresponding path program 1 times [2024-10-23 20:18:50,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:50,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295227328] [2024-10-23 20:18:50,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:50,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 49 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:18:50,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:50,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295227328] [2024-10-23 20:18:50,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295227328] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:18:50,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106974952] [2024-10-23 20:18:50,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:50,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:18:50,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:18:50,668 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) [2024-10-23 20:18:50,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 20:18:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:50,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:18:50,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:18:50,964 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-23 20:18:50,964 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:18:50,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106974952] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:50,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:18:50,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:18:50,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753132922] [2024-10-23 20:18:50,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:50,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:50,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:50,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:50,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:18:50,967 INFO L87 Difference]: Start difference. First operand 1706 states and 1969 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2024-10-23 20:18:51,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:51,364 INFO L93 Difference]: Finished difference Result 3804 states and 4469 transitions. [2024-10-23 20:18:51,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:51,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) Word has length 138 [2024-10-23 20:18:51,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:51,373 INFO L225 Difference]: With dead ends: 3804 [2024-10-23 20:18:51,373 INFO L226 Difference]: Without dead ends: 2099 [2024-10-23 20:18:51,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:18:51,377 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 45 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:51,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 186 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 20:18:51,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2024-10-23 20:18:51,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 1575. [2024-10-23 20:18:51,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1574 states have (on average 1.1601016518424396) internal successors, (1826), 1574 states have internal predecessors, (1826), 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) [2024-10-23 20:18:51,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 1826 transitions. [2024-10-23 20:18:51,407 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 1826 transitions. Word has length 138 [2024-10-23 20:18:51,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:51,408 INFO L471 AbstractCegarLoop]: Abstraction has 1575 states and 1826 transitions. [2024-10-23 20:18:51,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2024-10-23 20:18:51,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 1826 transitions. [2024-10-23 20:18:51,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-10-23 20:18:51,412 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:51,412 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:51,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-23 20:18:51,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:18:51,613 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:51,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:51,613 INFO L85 PathProgramCache]: Analyzing trace with hash 596663342, now seen corresponding path program 1 times [2024-10-23 20:18:51,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:51,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614268825] [2024-10-23 20:18:51,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:51,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:51,752 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-23 20:18:51,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:51,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614268825] [2024-10-23 20:18:51,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614268825] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:51,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:18:51,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:18:51,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489289517] [2024-10-23 20:18:51,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:51,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:51,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:51,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:51,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:51,754 INFO L87 Difference]: Start difference. First operand 1575 states and 1826 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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) [2024-10-23 20:18:52,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:52,096 INFO L93 Difference]: Finished difference Result 3018 states and 3517 transitions. [2024-10-23 20:18:52,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:52,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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) Word has length 146 [2024-10-23 20:18:52,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:52,101 INFO L225 Difference]: With dead ends: 3018 [2024-10-23 20:18:52,101 INFO L226 Difference]: Without dead ends: 1575 [2024-10-23 20:18:52,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:52,104 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 117 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:52,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 25 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 20:18:52,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2024-10-23 20:18:52,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1575. [2024-10-23 20:18:52,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1574 states have (on average 1.1092757306226175) internal successors, (1746), 1574 states have internal predecessors, (1746), 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) [2024-10-23 20:18:52,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 1746 transitions. [2024-10-23 20:18:52,129 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 1746 transitions. Word has length 146 [2024-10-23 20:18:52,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:52,129 INFO L471 AbstractCegarLoop]: Abstraction has 1575 states and 1746 transitions. [2024-10-23 20:18:52,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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) [2024-10-23 20:18:52,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 1746 transitions. [2024-10-23 20:18:52,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-23 20:18:52,132 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:52,132 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:52,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 20:18:52,133 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:52,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:52,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2079988827, now seen corresponding path program 1 times [2024-10-23 20:18:52,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:52,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533731240] [2024-10-23 20:18:52,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:52,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:18:52,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:52,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533731240] [2024-10-23 20:18:52,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533731240] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:18:52,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046969026] [2024-10-23 20:18:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:52,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:18:52,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:18:52,317 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) [2024-10-23 20:18:52,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 20:18:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:52,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:18:52,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:18:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:18:52,540 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:18:52,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046969026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:52,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:18:52,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:18:52,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408293395] [2024-10-23 20:18:52,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:52,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:52,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:52,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:52,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:18:52,542 INFO L87 Difference]: Start difference. First operand 1575 states and 1746 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2024-10-23 20:18:52,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:52,899 INFO L93 Difference]: Finished difference Result 3149 states and 3509 transitions. [2024-10-23 20:18:52,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:52,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) Word has length 147 [2024-10-23 20:18:52,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:52,905 INFO L225 Difference]: With dead ends: 3149 [2024-10-23 20:18:52,905 INFO L226 Difference]: Without dead ends: 1706 [2024-10-23 20:18:52,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:18:52,907 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 49 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:52,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 160 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 20:18:52,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2024-10-23 20:18:52,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1575. [2024-10-23 20:18:52,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1574 states have (on average 1.0914866581956797) internal successors, (1718), 1574 states have internal predecessors, (1718), 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) [2024-10-23 20:18:52,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 1718 transitions. [2024-10-23 20:18:52,930 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 1718 transitions. Word has length 147 [2024-10-23 20:18:52,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:52,931 INFO L471 AbstractCegarLoop]: Abstraction has 1575 states and 1718 transitions. [2024-10-23 20:18:52,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2024-10-23 20:18:52,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 1718 transitions. [2024-10-23 20:18:52,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-10-23 20:18:52,934 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:52,934 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:52,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 20:18:53,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-23 20:18:53,139 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:53,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:53,140 INFO L85 PathProgramCache]: Analyzing trace with hash 382144644, now seen corresponding path program 1 times [2024-10-23 20:18:53,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:53,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706687665] [2024-10-23 20:18:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:53,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-23 20:18:53,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:53,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706687665] [2024-10-23 20:18:53,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706687665] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:18:53,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642015415] [2024-10-23 20:18:53,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:53,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:18:53,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:18:53,360 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) [2024-10-23 20:18:53,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 20:18:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:53,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:18:53,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:18:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-23 20:18:53,652 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:18:53,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642015415] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:53,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:18:53,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:18:53,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141570116] [2024-10-23 20:18:53,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:53,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:53,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:53,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:53,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:18:53,654 INFO L87 Difference]: Start difference. First operand 1575 states and 1718 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-10-23 20:18:54,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:54,004 INFO L93 Difference]: Finished difference Result 3147 states and 3447 transitions. [2024-10-23 20:18:54,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:54,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) Word has length 160 [2024-10-23 20:18:54,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:54,005 INFO L225 Difference]: With dead ends: 3147 [2024-10-23 20:18:54,005 INFO L226 Difference]: Without dead ends: 0 [2024-10-23 20:18:54,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:18:54,009 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 55 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:54,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 167 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 20:18:54,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-23 20:18:54,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-23 20:18:54,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-10-23 20:18:54,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-23 20:18:54,010 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2024-10-23 20:18:54,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:54,011 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-23 20:18:54,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-10-23 20:18:54,011 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-23 20:18:54,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-23 20:18:54,014 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-23 20:18:54,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 20:18:54,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:18:54,218 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:54,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-23 20:18:54,457 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-23 20:18:54,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:18:54 BoogieIcfgContainer [2024-10-23 20:18:54,479 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-23 20:18:54,480 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-23 20:18:54,480 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-23 20:18:54,480 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-23 20:18:54,480 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:18:44" (3/4) ... [2024-10-23 20:18:54,483 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-23 20:18:54,504 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-23 20:18:54,505 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-23 20:18:54,506 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-23 20:18:54,507 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-23 20:18:54,654 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-23 20:18:54,654 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-23 20:18:54,655 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-23 20:18:54,655 INFO L158 Benchmark]: Toolchain (without parser) took 11689.45ms. Allocated memory was 138.4MB in the beginning and 293.6MB in the end (delta: 155.2MB). Free memory was 84.4MB in the beginning and 243.7MB in the end (delta: -159.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 20:18:54,655 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 99.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 20:18:54,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 619.40ms. Allocated memory is still 138.4MB. Free memory was 84.4MB in the beginning and 100.1MB in the end (delta: -15.7MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2024-10-23 20:18:54,656 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.94ms. Allocated memory is still 138.4MB. Free memory was 100.1MB in the beginning and 93.9MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-23 20:18:54,656 INFO L158 Benchmark]: Boogie Preprocessor took 116.75ms. Allocated memory is still 138.4MB. Free memory was 93.9MB in the beginning and 88.9MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-23 20:18:54,656 INFO L158 Benchmark]: RCFGBuilder took 1190.37ms. Allocated memory was 138.4MB in the beginning and 201.3MB in the end (delta: 62.9MB). Free memory was 88.9MB in the beginning and 123.7MB in the end (delta: -34.8MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2024-10-23 20:18:54,656 INFO L158 Benchmark]: TraceAbstraction took 9504.39ms. Allocated memory was 201.3MB in the beginning and 293.6MB in the end (delta: 92.3MB). Free memory was 122.7MB in the beginning and 256.3MB in the end (delta: -133.7MB). Peak memory consumption was 130.5MB. Max. memory is 16.1GB. [2024-10-23 20:18:54,657 INFO L158 Benchmark]: Witness Printer took 175.03ms. Allocated memory is still 293.6MB. Free memory was 256.3MB in the beginning and 243.7MB in the end (delta: 12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-23 20:18:54,658 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 99.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 619.40ms. Allocated memory is still 138.4MB. Free memory was 84.4MB in the beginning and 100.1MB in the end (delta: -15.7MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.94ms. Allocated memory is still 138.4MB. Free memory was 100.1MB in the beginning and 93.9MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 116.75ms. Allocated memory is still 138.4MB. Free memory was 93.9MB in the beginning and 88.9MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1190.37ms. Allocated memory was 138.4MB in the beginning and 201.3MB in the end (delta: 62.9MB). Free memory was 88.9MB in the beginning and 123.7MB in the end (delta: -34.8MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. * TraceAbstraction took 9504.39ms. Allocated memory was 201.3MB in the beginning and 293.6MB in the end (delta: 92.3MB). Free memory was 122.7MB in the beginning and 256.3MB in the end (delta: -133.7MB). Peak memory consumption was 130.5MB. Max. memory is 16.1GB. * Witness Printer took 175.03ms. Allocated memory is still 293.6MB. Free memory was 256.3MB in the beginning and 243.7MB in the end (delta: 12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 453]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 136 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.2s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1262 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1262 mSDsluCounter, 1196 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 501 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3664 IncrementalHoareTripleChecker+Invalid, 4165 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 501 mSolverCounterUnsat, 1143 mSDtfsCounter, 3664 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 472 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1706occurred in iteration=8, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 1310 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1852 NumberOfCodeBlocks, 1852 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1837 ConstructedInterpolants, 0 QuantifiedInterpolants, 4390 SizeOfPredicates, 0 NumberOfNonLiveVariables, 828 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 586/665 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 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((((a8 <= 13) && (a21 == 1)) && (a17 == 1)) || ((((5 == a16) && (a21 == 1)) && (a17 == 1)) && (a20 == 1))) || ((((a20 <= 0) && (a21 == 1)) && (a17 == 1)) && (15 <= a8))) || ((a17 <= 0) && (a20 == 1))) || (((a20 <= 0) && (a17 <= 0)) && (15 <= a8))) || (((a8 <= 13) && (a17 == 1)) && (a20 == 1))) || (((a8 < 14) || ((14 == a8) && (a16 <= 5))) && (a17 <= 0))) || ((a20 <= 0) && ((a8 < 14) || ((14 == a8) && (a16 <= 5))))) || (((((a8 <= 14) && (a21 == 1)) && (a17 == 1)) && (a16 <= 5)) && (a20 == 1))) RESULT: Ultimate proved your program to be correct! [2024-10-23 20:18:54,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE