./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/Problem15_label08.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/Problem15_label08.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 8bb11b03e1d6962fa6d12d5d93aa1dd97aef360b3e232443e9b2cf50f9d87a21 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:19:30,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:19:30,592 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:19:30,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:19:30,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:19:30,615 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:19:30,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:19:30,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:19:30,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:19:30,617 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:19:30,618 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:19:30,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:19:30,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:19:30,619 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:19:30,619 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:19:30,620 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:19:30,620 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:19:30,620 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:19:30,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:19:30,621 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:19:30,621 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:19:30,622 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:19:30,622 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:19:30,623 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:19:30,623 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:19:30,623 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:19:30,624 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:19:30,624 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:19:30,624 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:19:30,624 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:19:30,625 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:19:30,625 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:19:30,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:19:30,626 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:19:30,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:19:30,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:19:30,626 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:19:30,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:19:30,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:19:30,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:19:30,628 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:19:30,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:19:30,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bb11b03e1d6962fa6d12d5d93aa1dd97aef360b3e232443e9b2cf50f9d87a21 [2024-10-23 21:19:30,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:19:30,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:19:30,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:19:30,926 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:19:30,927 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:19:30,928 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label08.c [2024-10-23 21:19:32,362 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:19:32,724 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:19:32,725 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label08.c [2024-10-23 21:19:32,747 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/062484e53/620d19d5c1584a9c809e180c1f339e73/FLAG170236ea7 [2024-10-23 21:19:32,764 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/062484e53/620d19d5c1584a9c809e180c1f339e73 [2024-10-23 21:19:32,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:19:32,767 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:19:32,769 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:19:32,769 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:19:32,774 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:19:32,775 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:19:32" (1/1) ... [2024-10-23 21:19:32,777 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b926429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:32, skipping insertion in model container [2024-10-23 21:19:32,777 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:19:32" (1/1) ... [2024-10-23 21:19:32,859 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:19:33,159 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/Problem15_label08.c[6299,6312] [2024-10-23 21:19:33,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:19:33,507 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:19:33,536 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/Problem15_label08.c[6299,6312] [2024-10-23 21:19:33,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:19:33,783 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:19:33,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:33 WrapperNode [2024-10-23 21:19:33,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:19:33,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:19:33,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:19:33,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:19:33,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:33" (1/1) ... [2024-10-23 21:19:33,878 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:33" (1/1) ... [2024-10-23 21:19:34,038 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1760 [2024-10-23 21:19:34,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:19:34,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:19:34,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:19:34,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:19:34,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:33" (1/1) ... [2024-10-23 21:19:34,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:33" (1/1) ... [2024-10-23 21:19:34,070 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:33" (1/1) ... [2024-10-23 21:19:34,189 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 21:19:34,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:33" (1/1) ... [2024-10-23 21:19:34,190 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:33" (1/1) ... [2024-10-23 21:19:34,253 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:33" (1/1) ... [2024-10-23 21:19:34,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:33" (1/1) ... [2024-10-23 21:19:34,283 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:33" (1/1) ... [2024-10-23 21:19:34,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:33" (1/1) ... [2024-10-23 21:19:34,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:19:34,319 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:19:34,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:19:34,320 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:19:34,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:33" (1/1) ... [2024-10-23 21:19:34,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:19:34,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:19:34,360 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 21:19:34,363 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 21:19:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:19:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:19:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:19:34,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:19:34,464 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:19:34,466 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:19:36,794 INFO L? ?]: Removed 246 outVars from TransFormulas that were not future-live. [2024-10-23 21:19:36,795 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:19:36,847 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:19:36,850 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:19:36,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:19:36 BoogieIcfgContainer [2024-10-23 21:19:36,851 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:19:36,853 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:19:36,854 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:19:36,857 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:19:36,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:19:32" (1/3) ... [2024-10-23 21:19:36,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ead527c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:19:36, skipping insertion in model container [2024-10-23 21:19:36,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:33" (2/3) ... [2024-10-23 21:19:36,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ead527c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:19:36, skipping insertion in model container [2024-10-23 21:19:36,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:19:36" (3/3) ... [2024-10-23 21:19:36,862 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label08.c [2024-10-23 21:19:36,879 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:19:36,879 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:19:36,955 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:19:36,961 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;@2386ea8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:19:36,961 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:19:36,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 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 21:19:36,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-23 21:19:36,972 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:36,973 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] [2024-10-23 21:19:36,973 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:36,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:36,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1337171816, now seen corresponding path program 1 times [2024-10-23 21:19:36,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:36,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634531572] [2024-10-23 21:19:36,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:36,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:37,174 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 21:19:37,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:37,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634531572] [2024-10-23 21:19:37,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634531572] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:37,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:37,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:19:37,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094123694] [2024-10-23 21:19:37,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:37,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:19:37,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:37,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:19:37,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:19:37,207 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 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 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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 21:19:37,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:37,275 INFO L93 Difference]: Finished difference Result 723 states and 1375 transitions. [2024-10-23 21:19:37,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:19:37,280 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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 50 [2024-10-23 21:19:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:37,296 INFO L225 Difference]: With dead ends: 723 [2024-10-23 21:19:37,296 INFO L226 Difference]: Without dead ends: 360 [2024-10-23 21:19:37,301 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 21:19:37,305 INFO L432 NwaCegarLoop]: 623 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, 623 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 21:19:37,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 623 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:19:37,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-10-23 21:19:37,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-10-23 21:19:37,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.7353760445682451) internal successors, (623), 359 states have internal predecessors, (623), 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 21:19:37,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 623 transitions. [2024-10-23 21:19:37,364 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 623 transitions. Word has length 50 [2024-10-23 21:19:37,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:37,365 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 623 transitions. [2024-10-23 21:19:37,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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 21:19:37,365 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 623 transitions. [2024-10-23 21:19:37,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-23 21:19:37,367 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:37,367 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] [2024-10-23 21:19:37,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:19:37,367 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:37,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:37,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1689275579, now seen corresponding path program 1 times [2024-10-23 21:19:37,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:37,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363047149] [2024-10-23 21:19:37,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:37,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:37,602 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 21:19:37,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:37,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363047149] [2024-10-23 21:19:37,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363047149] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:37,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:37,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:19:37,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666704065] [2024-10-23 21:19:37,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:37,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:37,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:37,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:37,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:37,608 INFO L87 Difference]: Start difference. First operand 360 states and 623 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 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 21:19:39,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:39,293 INFO L93 Difference]: Finished difference Result 1025 states and 1788 transitions. [2024-10-23 21:19:39,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:39,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 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 50 [2024-10-23 21:19:39,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:39,297 INFO L225 Difference]: With dead ends: 1025 [2024-10-23 21:19:39,297 INFO L226 Difference]: Without dead ends: 666 [2024-10-23 21:19:39,298 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 21:19:39,299 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 277 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:39,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 316 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:19:39,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-10-23 21:19:39,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 664. [2024-10-23 21:19:39,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 1.4796380090497738) internal successors, (981), 663 states have internal predecessors, (981), 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 21:19:39,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 981 transitions. [2024-10-23 21:19:39,332 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 981 transitions. Word has length 50 [2024-10-23 21:19:39,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:39,332 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 981 transitions. [2024-10-23 21:19:39,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 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 21:19:39,333 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 981 transitions. [2024-10-23 21:19:39,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-10-23 21:19:39,336 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:39,337 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, 1, 1, 1, 1, 1, 1, 1, 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 21:19:39,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:19:39,337 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:39,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:39,338 INFO L85 PathProgramCache]: Analyzing trace with hash -502924851, now seen corresponding path program 1 times [2024-10-23 21:19:39,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:39,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883750411] [2024-10-23 21:19:39,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:39,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:19:39,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:39,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883750411] [2024-10-23 21:19:39,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883750411] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:39,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:39,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:19:39,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213226554] [2024-10-23 21:19:39,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:39,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:39,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:39,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:39,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:39,514 INFO L87 Difference]: Start difference. First operand 664 states and 981 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 21:19:41,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:41,099 INFO L93 Difference]: Finished difference Result 1954 states and 2893 transitions. [2024-10-23 21:19:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:41,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 125 [2024-10-23 21:19:41,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:41,104 INFO L225 Difference]: With dead ends: 1954 [2024-10-23 21:19:41,104 INFO L226 Difference]: Without dead ends: 1291 [2024-10-23 21:19:41,105 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 21:19:41,106 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 258 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:41,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 325 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:19:41,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2024-10-23 21:19:41,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1281. [2024-10-23 21:19:41,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 1.39921875) internal successors, (1791), 1280 states have internal predecessors, (1791), 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 21:19:41,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1791 transitions. [2024-10-23 21:19:41,133 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1791 transitions. Word has length 125 [2024-10-23 21:19:41,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:41,133 INFO L471 AbstractCegarLoop]: Abstraction has 1281 states and 1791 transitions. [2024-10-23 21:19:41,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 21:19:41,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1791 transitions. [2024-10-23 21:19:41,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-10-23 21:19:41,137 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:41,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:41,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:19:41,138 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:41,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:41,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1341948969, now seen corresponding path program 1 times [2024-10-23 21:19:41,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:41,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420331270] [2024-10-23 21:19:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:41,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:41,323 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:19:41,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:41,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420331270] [2024-10-23 21:19:41,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420331270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:41,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:41,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:19:41,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174949234] [2024-10-23 21:19:41,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:41,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:41,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:41,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:41,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:41,326 INFO L87 Difference]: Start difference. First operand 1281 states and 1791 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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 21:19:43,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:43,135 INFO L93 Difference]: Finished difference Result 3763 states and 5262 transitions. [2024-10-23 21:19:43,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:43,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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 129 [2024-10-23 21:19:43,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:43,145 INFO L225 Difference]: With dead ends: 3763 [2024-10-23 21:19:43,145 INFO L226 Difference]: Without dead ends: 2483 [2024-10-23 21:19:43,150 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 21:19:43,151 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 236 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:43,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 364 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-23 21:19:43,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2024-10-23 21:19:43,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2181. [2024-10-23 21:19:43,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.281651376146789) internal successors, (2794), 2180 states have internal predecessors, (2794), 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 21:19:43,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 2794 transitions. [2024-10-23 21:19:43,194 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 2794 transitions. Word has length 129 [2024-10-23 21:19:43,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:43,196 INFO L471 AbstractCegarLoop]: Abstraction has 2181 states and 2794 transitions. [2024-10-23 21:19:43,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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 21:19:43,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 2794 transitions. [2024-10-23 21:19:43,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-10-23 21:19:43,205 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:43,205 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:43,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:19:43,205 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:43,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:43,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1176070550, now seen corresponding path program 1 times [2024-10-23 21:19:43,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:43,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302597891] [2024-10-23 21:19:43,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:43,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-23 21:19:43,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:43,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302597891] [2024-10-23 21:19:43,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302597891] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:43,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:43,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:19:43,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391957490] [2024-10-23 21:19:43,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:43,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:43,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:43,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:43,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:43,498 INFO L87 Difference]: Start difference. First operand 2181 states and 2794 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 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 21:19:44,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:44,752 INFO L93 Difference]: Finished difference Result 6165 states and 7960 transitions. [2024-10-23 21:19:44,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:44,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 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 220 [2024-10-23 21:19:44,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:44,766 INFO L225 Difference]: With dead ends: 6165 [2024-10-23 21:19:44,766 INFO L226 Difference]: Without dead ends: 3985 [2024-10-23 21:19:44,770 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 21:19:44,771 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 257 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:44,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 337 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-23 21:19:44,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3985 states. [2024-10-23 21:19:44,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3985 to 3681. [2024-10-23 21:19:44,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 3680 states have (on average 1.2201086956521738) internal successors, (4490), 3680 states have internal predecessors, (4490), 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 21:19:44,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 4490 transitions. [2024-10-23 21:19:44,839 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 4490 transitions. Word has length 220 [2024-10-23 21:19:44,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:44,841 INFO L471 AbstractCegarLoop]: Abstraction has 3681 states and 4490 transitions. [2024-10-23 21:19:44,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 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 21:19:44,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 4490 transitions. [2024-10-23 21:19:44,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-10-23 21:19:44,846 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:44,847 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:44,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:19:44,847 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:44,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:44,848 INFO L85 PathProgramCache]: Analyzing trace with hash -796085586, now seen corresponding path program 1 times [2024-10-23 21:19:44,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:44,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415291254] [2024-10-23 21:19:44,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:44,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-23 21:19:45,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:45,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415291254] [2024-10-23 21:19:45,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415291254] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:45,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:45,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:19:45,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178736567] [2024-10-23 21:19:45,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:45,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:45,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:45,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:45,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:45,541 INFO L87 Difference]: Start difference. First operand 3681 states and 4490 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 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 21:19:46,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:46,670 INFO L93 Difference]: Finished difference Result 7660 states and 9290 transitions. [2024-10-23 21:19:46,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:46,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 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 322 [2024-10-23 21:19:46,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:46,682 INFO L225 Difference]: With dead ends: 7660 [2024-10-23 21:19:46,683 INFO L226 Difference]: Without dead ends: 3980 [2024-10-23 21:19:46,687 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 21:19:46,688 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:46,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 357 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:19:46,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2024-10-23 21:19:46,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 3980. [2024-10-23 21:19:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3980 states, 3979 states have (on average 1.2050766524252325) internal successors, (4795), 3979 states have internal predecessors, (4795), 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 21:19:46,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 4795 transitions. [2024-10-23 21:19:46,751 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 4795 transitions. Word has length 322 [2024-10-23 21:19:46,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:46,751 INFO L471 AbstractCegarLoop]: Abstraction has 3980 states and 4795 transitions. [2024-10-23 21:19:46,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 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 21:19:46,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 4795 transitions. [2024-10-23 21:19:46,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-10-23 21:19:46,756 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:46,756 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:46,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:19:46,756 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:46,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:46,757 INFO L85 PathProgramCache]: Analyzing trace with hash 964758635, now seen corresponding path program 1 times [2024-10-23 21:19:46,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:46,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365210818] [2024-10-23 21:19:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:46,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-23 21:19:47,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:47,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365210818] [2024-10-23 21:19:47,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365210818] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:47,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:47,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:19:47,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444013353] [2024-10-23 21:19:47,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:47,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:47,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:47,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:47,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:47,033 INFO L87 Difference]: Start difference. First operand 3980 states and 4795 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 21:19:48,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:48,514 INFO L93 Difference]: Finished difference Result 8856 states and 10952 transitions. [2024-10-23 21:19:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:48,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 337 [2024-10-23 21:19:48,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:48,531 INFO L225 Difference]: With dead ends: 8856 [2024-10-23 21:19:48,531 INFO L226 Difference]: Without dead ends: 5176 [2024-10-23 21:19:48,536 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 21:19:48,536 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 263 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:48,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 320 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:19:48,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5176 states. [2024-10-23 21:19:48,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5176 to 3677. [2024-10-23 21:19:48,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3676 states have (on average 1.218171926006529) internal successors, (4478), 3676 states have internal predecessors, (4478), 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 21:19:48,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 4478 transitions. [2024-10-23 21:19:48,642 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 4478 transitions. Word has length 337 [2024-10-23 21:19:48,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:48,643 INFO L471 AbstractCegarLoop]: Abstraction has 3677 states and 4478 transitions. [2024-10-23 21:19:48,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 21:19:48,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 4478 transitions. [2024-10-23 21:19:48,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-10-23 21:19:48,650 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:48,651 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:48,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:19:48,652 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:48,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:48,652 INFO L85 PathProgramCache]: Analyzing trace with hash -863889188, now seen corresponding path program 1 times [2024-10-23 21:19:48,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:48,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144369558] [2024-10-23 21:19:48,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:48,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:49,027 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-23 21:19:49,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:49,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144369558] [2024-10-23 21:19:49,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144369558] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:49,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:49,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:19:49,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151063348] [2024-10-23 21:19:49,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:49,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:49,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:49,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:49,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:49,032 INFO L87 Difference]: Start difference. First operand 3677 states and 4478 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 21:19:50,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:50,734 INFO L93 Difference]: Finished difference Result 9156 states and 11368 transitions. [2024-10-23 21:19:50,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:50,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 396 [2024-10-23 21:19:50,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:50,751 INFO L225 Difference]: With dead ends: 9156 [2024-10-23 21:19:50,752 INFO L226 Difference]: Without dead ends: 5779 [2024-10-23 21:19:50,756 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 21:19:50,757 INFO L432 NwaCegarLoop]: 598 mSDtfsCounter, 277 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:50,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 634 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-23 21:19:50,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5779 states. [2024-10-23 21:19:50,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5779 to 5181. [2024-10-23 21:19:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5181 states, 5180 states have (on average 1.1768339768339768) internal successors, (6096), 5180 states have internal predecessors, (6096), 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 21:19:50,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 6096 transitions. [2024-10-23 21:19:50,826 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 6096 transitions. Word has length 396 [2024-10-23 21:19:50,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:50,827 INFO L471 AbstractCegarLoop]: Abstraction has 5181 states and 6096 transitions. [2024-10-23 21:19:50,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 21:19:50,828 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 6096 transitions. [2024-10-23 21:19:50,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-10-23 21:19:50,833 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:50,834 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:50,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:19:50,834 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:50,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:50,835 INFO L85 PathProgramCache]: Analyzing trace with hash 2012789640, now seen corresponding path program 1 times [2024-10-23 21:19:50,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:50,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875930544] [2024-10-23 21:19:50,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:50,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:51,144 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:19:51,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:51,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875930544] [2024-10-23 21:19:51,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875930544] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:51,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:51,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:19:51,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915601376] [2024-10-23 21:19:51,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:51,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:51,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:51,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:51,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:51,149 INFO L87 Difference]: Start difference. First operand 5181 states and 6096 transitions. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 21:19:52,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:52,235 INFO L93 Difference]: Finished difference Result 11867 states and 14276 transitions. [2024-10-23 21:19:52,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:52,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 402 [2024-10-23 21:19:52,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:52,266 INFO L225 Difference]: With dead ends: 11867 [2024-10-23 21:19:52,267 INFO L226 Difference]: Without dead ends: 6986 [2024-10-23 21:19:52,273 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 21:19:52,274 INFO L432 NwaCegarLoop]: 562 mSDtfsCounter, 248 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:52,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 600 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 21:19:52,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6986 states. [2024-10-23 21:19:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6986 to 6086. [2024-10-23 21:19:52,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6086 states, 6085 states have (on average 1.162859490550534) internal successors, (7076), 6085 states have internal predecessors, (7076), 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 21:19:52,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6086 states to 6086 states and 7076 transitions. [2024-10-23 21:19:52,362 INFO L78 Accepts]: Start accepts. Automaton has 6086 states and 7076 transitions. Word has length 402 [2024-10-23 21:19:52,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:52,362 INFO L471 AbstractCegarLoop]: Abstraction has 6086 states and 7076 transitions. [2024-10-23 21:19:52,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 21:19:52,363 INFO L276 IsEmpty]: Start isEmpty. Operand 6086 states and 7076 transitions. [2024-10-23 21:19:52,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-10-23 21:19:52,366 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:52,366 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:52,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:19:52,366 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:52,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:52,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1437825733, now seen corresponding path program 1 times [2024-10-23 21:19:52,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:52,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761858194] [2024-10-23 21:19:52,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:52,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:52,706 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-23 21:19:52,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:52,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761858194] [2024-10-23 21:19:52,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761858194] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:52,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:52,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:19:52,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24551880] [2024-10-23 21:19:52,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:52,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:52,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:52,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:52,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:52,716 INFO L87 Difference]: Start difference. First operand 6086 states and 7076 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 21:19:53,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:53,852 INFO L93 Difference]: Finished difference Result 13666 states and 16223 transitions. [2024-10-23 21:19:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:53,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 419 [2024-10-23 21:19:53,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:53,864 INFO L225 Difference]: With dead ends: 13666 [2024-10-23 21:19:53,864 INFO L226 Difference]: Without dead ends: 7880 [2024-10-23 21:19:53,870 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 21:19:53,871 INFO L432 NwaCegarLoop]: 577 mSDtfsCounter, 248 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:53,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 614 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:19:53,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7880 states. [2024-10-23 21:19:53,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7880 to 7876. [2024-10-23 21:19:53,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7876 states, 7875 states have (on average 1.1457777777777778) internal successors, (9023), 7875 states have internal predecessors, (9023), 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 21:19:53,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7876 states to 7876 states and 9023 transitions. [2024-10-23 21:19:53,963 INFO L78 Accepts]: Start accepts. Automaton has 7876 states and 9023 transitions. Word has length 419 [2024-10-23 21:19:53,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:53,963 INFO L471 AbstractCegarLoop]: Abstraction has 7876 states and 9023 transitions. [2024-10-23 21:19:53,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 21:19:53,964 INFO L276 IsEmpty]: Start isEmpty. Operand 7876 states and 9023 transitions. [2024-10-23 21:19:53,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-10-23 21:19:53,967 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:53,967 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:53,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:19:53,968 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:53,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:53,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2090914766, now seen corresponding path program 1 times [2024-10-23 21:19:53,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:53,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865713811] [2024-10-23 21:19:53,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:53,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 49 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:19:54,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:54,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865713811] [2024-10-23 21:19:54,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865713811] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:19:54,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586364145] [2024-10-23 21:19:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:54,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:54,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:19:54,754 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 21:19:54,755 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 21:19:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:54,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:19:54,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:20:00,444 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-23 21:20:00,445 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:20:00,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586364145] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:00,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:20:00,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:20:00,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65091430] [2024-10-23 21:20:00,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:00,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:00,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:00,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:00,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:00,448 INFO L87 Difference]: Start difference. First operand 7876 states and 9023 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 21:20:01,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:01,838 INFO L93 Difference]: Finished difference Result 20242 states and 23285 transitions. [2024-10-23 21:20:01,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:01,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 427 [2024-10-23 21:20:01,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:01,860 INFO L225 Difference]: With dead ends: 20242 [2024-10-23 21:20:01,860 INFO L226 Difference]: Without dead ends: 12666 [2024-10-23 21:20:01,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:01,867 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 330 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:01,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 176 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:20:01,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12666 states. [2024-10-23 21:20:01,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12666 to 10869. [2024-10-23 21:20:01,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10869 states, 10868 states have (on average 1.146945160103055) internal successors, (12465), 10868 states have internal predecessors, (12465), 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 21:20:01,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10869 states to 10869 states and 12465 transitions. [2024-10-23 21:20:01,991 INFO L78 Accepts]: Start accepts. Automaton has 10869 states and 12465 transitions. Word has length 427 [2024-10-23 21:20:01,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:01,992 INFO L471 AbstractCegarLoop]: Abstraction has 10869 states and 12465 transitions. [2024-10-23 21:20:01,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 21:20:01,992 INFO L276 IsEmpty]: Start isEmpty. Operand 10869 states and 12465 transitions. [2024-10-23 21:20:01,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-10-23 21:20:01,997 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:01,997 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 21:20:02,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:20:02,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-23 21:20:02,198 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:02,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:02,199 INFO L85 PathProgramCache]: Analyzing trace with hash -3349954, now seen corresponding path program 1 times [2024-10-23 21:20:02,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:02,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195165158] [2024-10-23 21:20:02,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:02,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 431 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-10-23 21:20:02,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:02,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195165158] [2024-10-23 21:20:02,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195165158] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:02,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:02,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:20:02,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263192453] [2024-10-23 21:20:02,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:02,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:02,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:02,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:02,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:02,679 INFO L87 Difference]: Start difference. First operand 10869 states and 12465 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 21:20:04,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:04,043 INFO L93 Difference]: Finished difference Result 26836 states and 31060 transitions. [2024-10-23 21:20:04,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:04,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 538 [2024-10-23 21:20:04,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:04,074 INFO L225 Difference]: With dead ends: 26836 [2024-10-23 21:20:04,075 INFO L226 Difference]: Without dead ends: 16267 [2024-10-23 21:20:04,087 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 21:20:04,088 INFO L432 NwaCegarLoop]: 585 mSDtfsCounter, 246 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:04,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 617 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:20:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16267 states. [2024-10-23 21:20:04,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16267 to 15656. [2024-10-23 21:20:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15656 states, 15655 states have (on average 1.1357393803896518) internal successors, (17780), 15655 states have internal predecessors, (17780), 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 21:20:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15656 states to 15656 states and 17780 transitions. [2024-10-23 21:20:04,285 INFO L78 Accepts]: Start accepts. Automaton has 15656 states and 17780 transitions. Word has length 538 [2024-10-23 21:20:04,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:04,286 INFO L471 AbstractCegarLoop]: Abstraction has 15656 states and 17780 transitions. [2024-10-23 21:20:04,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 21:20:04,286 INFO L276 IsEmpty]: Start isEmpty. Operand 15656 states and 17780 transitions. [2024-10-23 21:20:04,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-10-23 21:20:04,293 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:04,293 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:04,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:20:04,294 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:04,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:04,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1437394971, now seen corresponding path program 1 times [2024-10-23 21:20:04,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:04,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146547564] [2024-10-23 21:20:04,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:04,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2024-10-23 21:20:04,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:04,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146547564] [2024-10-23 21:20:04,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146547564] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:04,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:04,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:20:04,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284355895] [2024-10-23 21:20:04,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:04,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:04,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:04,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:04,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:04,628 INFO L87 Difference]: Start difference. First operand 15656 states and 17780 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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 21:20:05,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:05,842 INFO L93 Difference]: Finished difference Result 31308 states and 35592 transitions. [2024-10-23 21:20:05,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:05,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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 551 [2024-10-23 21:20:05,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:05,865 INFO L225 Difference]: With dead ends: 31308 [2024-10-23 21:20:05,865 INFO L226 Difference]: Without dead ends: 15952 [2024-10-23 21:20:05,875 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 21:20:05,876 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 464 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:05,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 69 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:20:05,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15952 states. [2024-10-23 21:20:05,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15952 to 15652. [2024-10-23 21:20:06,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15652 states, 15651 states have (on average 1.13558239090154) internal successors, (17773), 15651 states have internal predecessors, (17773), 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 21:20:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15652 states to 15652 states and 17773 transitions. [2024-10-23 21:20:06,028 INFO L78 Accepts]: Start accepts. Automaton has 15652 states and 17773 transitions. Word has length 551 [2024-10-23 21:20:06,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:06,029 INFO L471 AbstractCegarLoop]: Abstraction has 15652 states and 17773 transitions. [2024-10-23 21:20:06,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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 21:20:06,029 INFO L276 IsEmpty]: Start isEmpty. Operand 15652 states and 17773 transitions. [2024-10-23 21:20:06,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2024-10-23 21:20:06,036 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:06,037 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:06,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:20:06,037 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:06,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:06,038 INFO L85 PathProgramCache]: Analyzing trace with hash -514136616, now seen corresponding path program 1 times [2024-10-23 21:20:06,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:06,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753274594] [2024-10-23 21:20:06,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:06,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 417 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-23 21:20:06,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:06,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753274594] [2024-10-23 21:20:06,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753274594] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:06,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:06,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:20:06,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909983681] [2024-10-23 21:20:06,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:06,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:06,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:06,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:06,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:06,319 INFO L87 Difference]: Start difference. First operand 15652 states and 17773 transitions. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 21:20:07,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:07,319 INFO L93 Difference]: Finished difference Result 32798 states and 37287 transitions. [2024-10-23 21:20:07,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:07,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 571 [2024-10-23 21:20:07,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:07,350 INFO L225 Difference]: With dead ends: 32798 [2024-10-23 21:20:07,350 INFO L226 Difference]: Without dead ends: 17446 [2024-10-23 21:20:07,364 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 21:20:07,365 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 265 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:07,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 329 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:20:07,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17446 states. [2024-10-23 21:20:07,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17446 to 13556. [2024-10-23 21:20:07,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13556 states, 13555 states have (on average 1.1454075986720766) internal successors, (15526), 13555 states have internal predecessors, (15526), 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 21:20:07,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13556 states to 13556 states and 15526 transitions. [2024-10-23 21:20:07,615 INFO L78 Accepts]: Start accepts. Automaton has 13556 states and 15526 transitions. Word has length 571 [2024-10-23 21:20:07,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:07,615 INFO L471 AbstractCegarLoop]: Abstraction has 13556 states and 15526 transitions. [2024-10-23 21:20:07,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 21:20:07,616 INFO L276 IsEmpty]: Start isEmpty. Operand 13556 states and 15526 transitions. [2024-10-23 21:20:07,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2024-10-23 21:20:07,624 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:07,625 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:07,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 21:20:07,625 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:07,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:07,626 INFO L85 PathProgramCache]: Analyzing trace with hash 414200724, now seen corresponding path program 1 times [2024-10-23 21:20:07,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:07,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769768380] [2024-10-23 21:20:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:07,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 565 proven. 39 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-10-23 21:20:08,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:08,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769768380] [2024-10-23 21:20:08,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769768380] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:20:08,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687972015] [2024-10-23 21:20:08,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:08,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:08,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:20:08,202 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 21:20:08,203 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 21:20:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:08,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:20:08,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:20:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2024-10-23 21:20:08,507 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:20:08,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687972015] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:08,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:20:08,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:20:08,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116089799] [2024-10-23 21:20:08,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:08,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:08,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:08,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:08,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:08,509 INFO L87 Difference]: Start difference. First operand 13556 states and 15526 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 21:20:09,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:09,563 INFO L93 Difference]: Finished difference Result 29801 states and 34428 transitions. [2024-10-23 21:20:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:09,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 578 [2024-10-23 21:20:09,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:09,584 INFO L225 Difference]: With dead ends: 29801 [2024-10-23 21:20:09,585 INFO L226 Difference]: Without dead ends: 16545 [2024-10-23 21:20:09,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:09,597 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 362 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:09,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 442 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 21:20:09,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16545 states. [2024-10-23 21:20:09,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16545 to 16545. [2024-10-23 21:20:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16545 states, 16544 states have (on average 1.1320720502901354) internal successors, (18729), 16544 states have internal predecessors, (18729), 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 21:20:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16545 states to 16545 states and 18729 transitions. [2024-10-23 21:20:09,765 INFO L78 Accepts]: Start accepts. Automaton has 16545 states and 18729 transitions. Word has length 578 [2024-10-23 21:20:09,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:09,766 INFO L471 AbstractCegarLoop]: Abstraction has 16545 states and 18729 transitions. [2024-10-23 21:20:09,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 21:20:09,766 INFO L276 IsEmpty]: Start isEmpty. Operand 16545 states and 18729 transitions. [2024-10-23 21:20:09,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2024-10-23 21:20:09,775 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:09,775 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:09,792 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 21:20:09,976 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,SelfDestructingSolverStorable14 [2024-10-23 21:20:09,976 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:09,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:09,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1613681335, now seen corresponding path program 1 times [2024-10-23 21:20:09,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:09,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531194259] [2024-10-23 21:20:09,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:09,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:10,567 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 437 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-23 21:20:10,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:10,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531194259] [2024-10-23 21:20:10,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531194259] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:10,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:10,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:20:10,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451583168] [2024-10-23 21:20:10,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:10,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:10,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:10,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:10,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:10,570 INFO L87 Difference]: Start difference. First operand 16545 states and 18729 transitions. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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 21:20:11,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:11,880 INFO L93 Difference]: Finished difference Result 40866 states and 46390 transitions. [2024-10-23 21:20:11,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:11,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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 612 [2024-10-23 21:20:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:11,900 INFO L225 Difference]: With dead ends: 40866 [2024-10-23 21:20:11,900 INFO L226 Difference]: Without dead ends: 21631 [2024-10-23 21:20:11,915 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 21:20:11,916 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 179 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:11,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 520 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-23 21:20:11,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21631 states. [2024-10-23 21:20:12,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21631 to 19537. [2024-10-23 21:20:12,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19537 states, 19536 states have (on average 1.0825143325143325) internal successors, (21148), 19536 states have internal predecessors, (21148), 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 21:20:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19537 states to 19537 states and 21148 transitions. [2024-10-23 21:20:12,176 INFO L78 Accepts]: Start accepts. Automaton has 19537 states and 21148 transitions. Word has length 612 [2024-10-23 21:20:12,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:12,177 INFO L471 AbstractCegarLoop]: Abstraction has 19537 states and 21148 transitions. [2024-10-23 21:20:12,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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 21:20:12,177 INFO L276 IsEmpty]: Start isEmpty. Operand 19537 states and 21148 transitions. [2024-10-23 21:20:12,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2024-10-23 21:20:12,193 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:12,193 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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] [2024-10-23 21:20:12,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:20:12,194 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:12,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:12,194 INFO L85 PathProgramCache]: Analyzing trace with hash -127897499, now seen corresponding path program 1 times [2024-10-23 21:20:12,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:12,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560011079] [2024-10-23 21:20:12,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:12,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 223 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:20:13,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:13,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560011079] [2024-10-23 21:20:13,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560011079] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:20:13,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735422640] [2024-10-23 21:20:13,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:13,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:13,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:20:13,837 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 21:20:13,838 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 21:20:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:14,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-23 21:20:14,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:20:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 473 proven. 49 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-23 21:20:16,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:20:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 473 proven. 49 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-23 21:20:19,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735422640] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 21:20:19,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 21:20:19,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2024-10-23 21:20:19,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646337585] [2024-10-23 21:20:19,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 21:20:19,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-23 21:20:19,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:19,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-23 21:20:19,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-23 21:20:19,034 INFO L87 Difference]: Start difference. First operand 19537 states and 21148 transitions. Second operand has 15 states, 15 states have (on average 107.06666666666666) internal successors, (1606), 15 states have internal predecessors, (1606), 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 21:20:32,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:32,794 INFO L93 Difference]: Finished difference Result 78005 states and 83752 transitions. [2024-10-23 21:20:32,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-10-23 21:20:32,794 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 107.06666666666666) internal successors, (1606), 15 states have internal predecessors, (1606), 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 722 [2024-10-23 21:20:32,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:32,853 INFO L225 Difference]: With dead ends: 78005 [2024-10-23 21:20:32,853 INFO L226 Difference]: Without dead ends: 57015 [2024-10-23 21:20:32,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1549 GetRequests, 1472 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2321 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1230, Invalid=4932, Unknown=0, NotChecked=0, Total=6162 [2024-10-23 21:20:32,876 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 11566 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 17155 mSolverCounterSat, 4218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11566 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 21373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4218 IncrementalHoareTripleChecker+Valid, 17155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:32,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11566 Valid, 470 Invalid, 21373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4218 Valid, 17155 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2024-10-23 21:20:32,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57015 states. [2024-10-23 21:20:33,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57015 to 21029. [2024-10-23 21:20:33,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21029 states, 21028 states have (on average 1.070049457865703) internal successors, (22501), 21028 states have internal predecessors, (22501), 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 21:20:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21029 states to 21029 states and 22501 transitions. [2024-10-23 21:20:33,206 INFO L78 Accepts]: Start accepts. Automaton has 21029 states and 22501 transitions. Word has length 722 [2024-10-23 21:20:33,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:33,206 INFO L471 AbstractCegarLoop]: Abstraction has 21029 states and 22501 transitions. [2024-10-23 21:20:33,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 107.06666666666666) internal successors, (1606), 15 states have internal predecessors, (1606), 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 21:20:33,206 INFO L276 IsEmpty]: Start isEmpty. Operand 21029 states and 22501 transitions. [2024-10-23 21:20:33,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2024-10-23 21:20:33,218 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:33,219 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:33,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-23 21:20:33,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:33,420 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:33,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:33,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1916225527, now seen corresponding path program 1 times [2024-10-23 21:20:33,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:33,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995655394] [2024-10-23 21:20:33,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:33,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:34,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 478 proven. 357 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2024-10-23 21:20:34,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:34,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995655394] [2024-10-23 21:20:34,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995655394] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:20:34,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93964765] [2024-10-23 21:20:34,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:34,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:34,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:20:34,691 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:20:34,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 21:20:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:34,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:20:34,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:20:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2024-10-23 21:20:35,028 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:20:35,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93964765] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:35,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:20:35,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-23 21:20:35,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47090022] [2024-10-23 21:20:35,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:35,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:35,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:35,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:35,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:20:35,030 INFO L87 Difference]: Start difference. First operand 21029 states and 22501 transitions. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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 21:20:36,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:36,005 INFO L93 Difference]: Finished difference Result 41456 states and 44367 transitions. [2024-10-23 21:20:36,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:36,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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 780 [2024-10-23 21:20:36,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:36,030 INFO L225 Difference]: With dead ends: 41456 [2024-10-23 21:20:36,031 INFO L226 Difference]: Without dead ends: 20428 [2024-10-23 21:20:36,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 781 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 21:20:36,043 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 278 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:36,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 526 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:20:36,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20428 states. [2024-10-23 21:20:36,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20428 to 20129. [2024-10-23 21:20:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20129 states, 20128 states have (on average 1.0421800476947536) internal successors, (20977), 20128 states have internal predecessors, (20977), 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 21:20:36,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20129 states to 20129 states and 20977 transitions. [2024-10-23 21:20:36,278 INFO L78 Accepts]: Start accepts. Automaton has 20129 states and 20977 transitions. Word has length 780 [2024-10-23 21:20:36,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:36,279 INFO L471 AbstractCegarLoop]: Abstraction has 20129 states and 20977 transitions. [2024-10-23 21:20:36,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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 21:20:36,279 INFO L276 IsEmpty]: Start isEmpty. Operand 20129 states and 20977 transitions. [2024-10-23 21:20:36,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2024-10-23 21:20:36,299 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:36,300 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1] [2024-10-23 21:20:36,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-23 21:20:36,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-23 21:20:36,501 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:36,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:36,501 INFO L85 PathProgramCache]: Analyzing trace with hash 414574826, now seen corresponding path program 1 times [2024-10-23 21:20:36,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:36,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102894276] [2024-10-23 21:20:36,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:36,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 684 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-10-23 21:20:37,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:37,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102894276] [2024-10-23 21:20:37,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102894276] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:37,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:37,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:20:37,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495759306] [2024-10-23 21:20:37,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:37,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:37,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:37,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:37,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:37,093 INFO L87 Difference]: Start difference. First operand 20129 states and 20977 transitions. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 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 21:20:38,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:38,059 INFO L93 Difference]: Finished difference Result 44157 states and 46028 transitions. [2024-10-23 21:20:38,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:38,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 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 886 [2024-10-23 21:20:38,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:38,080 INFO L225 Difference]: With dead ends: 44157 [2024-10-23 21:20:38,080 INFO L226 Difference]: Without dead ends: 24328 [2024-10-23 21:20:38,092 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 21:20:38,093 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 347 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:38,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 147 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:20:38,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24328 states. [2024-10-23 21:20:38,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24328 to 22220. [2024-10-23 21:20:38,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22220 states, 22219 states have (on average 1.0407309059813672) internal successors, (23124), 22219 states have internal predecessors, (23124), 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 21:20:38,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22220 states to 22220 states and 23124 transitions. [2024-10-23 21:20:38,395 INFO L78 Accepts]: Start accepts. Automaton has 22220 states and 23124 transitions. Word has length 886 [2024-10-23 21:20:38,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:38,395 INFO L471 AbstractCegarLoop]: Abstraction has 22220 states and 23124 transitions. [2024-10-23 21:20:38,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 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 21:20:38,396 INFO L276 IsEmpty]: Start isEmpty. Operand 22220 states and 23124 transitions. [2024-10-23 21:20:38,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 900 [2024-10-23 21:20:38,408 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:38,408 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-10-23 21:20:38,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-23 21:20:38,409 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:38,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:38,409 INFO L85 PathProgramCache]: Analyzing trace with hash 704865570, now seen corresponding path program 1 times [2024-10-23 21:20:38,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:38,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569379523] [2024-10-23 21:20:38,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:38,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 748 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-10-23 21:20:39,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:39,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569379523] [2024-10-23 21:20:39,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569379523] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:39,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:39,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:20:39,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667576751] [2024-10-23 21:20:39,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:39,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:39,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:39,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:39,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:39,020 INFO L87 Difference]: Start difference. First operand 22220 states and 23124 transitions. Second operand has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:39,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:39,987 INFO L93 Difference]: Finished difference Result 47144 states and 49079 transitions. [2024-10-23 21:20:39,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:39,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 899 [2024-10-23 21:20:39,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:40,012 INFO L225 Difference]: With dead ends: 47144 [2024-10-23 21:20:40,012 INFO L226 Difference]: Without dead ends: 25224 [2024-10-23 21:20:40,026 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 21:20:40,026 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 32 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:40,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 547 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:20:40,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25224 states. [2024-10-23 21:20:40,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25224 to 24624. [2024-10-23 21:20:40,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24624 states, 24623 states have (on average 1.0386224261868984) internal successors, (25574), 24623 states have internal predecessors, (25574), 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 21:20:40,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24624 states to 24624 states and 25574 transitions. [2024-10-23 21:20:40,227 INFO L78 Accepts]: Start accepts. Automaton has 24624 states and 25574 transitions. Word has length 899 [2024-10-23 21:20:40,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:40,228 INFO L471 AbstractCegarLoop]: Abstraction has 24624 states and 25574 transitions. [2024-10-23 21:20:40,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:40,228 INFO L276 IsEmpty]: Start isEmpty. Operand 24624 states and 25574 transitions. [2024-10-23 21:20:40,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2024-10-23 21:20:40,243 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:40,243 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:40,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-23 21:20:40,243 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:40,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:40,244 INFO L85 PathProgramCache]: Analyzing trace with hash -329360357, now seen corresponding path program 1 times [2024-10-23 21:20:40,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:40,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759845652] [2024-10-23 21:20:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:40,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1843 backedges. 798 proven. 49 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2024-10-23 21:20:40,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:40,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759845652] [2024-10-23 21:20:40,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759845652] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:20:40,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2411005] [2024-10-23 21:20:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:40,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:40,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:20:40,720 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:20:40,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 21:20:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:40,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:20:41,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:20:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1843 backedges. 798 proven. 49 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2024-10-23 21:20:41,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:20:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1843 backedges. 798 proven. 49 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2024-10-23 21:20:41,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2411005] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 21:20:41,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 21:20:41,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-10-23 21:20:41,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101215990] [2024-10-23 21:20:41,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 21:20:41,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-23 21:20:41,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:41,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-23 21:20:41,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:41,407 INFO L87 Difference]: Start difference. First operand 24624 states and 25574 transitions. Second operand has 6 states, 6 states have (on average 109.5) internal successors, (657), 6 states have internal predecessors, (657), 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 21:20:43,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:43,357 INFO L93 Difference]: Finished difference Result 58224 states and 60473 transitions. [2024-10-23 21:20:43,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-23 21:20:43,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 109.5) internal successors, (657), 6 states have internal predecessors, (657), 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 934 [2024-10-23 21:20:43,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:43,397 INFO L225 Difference]: With dead ends: 58224 [2024-10-23 21:20:43,397 INFO L226 Difference]: Without dead ends: 33900 [2024-10-23 21:20:43,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1870 GetRequests, 1865 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:43,418 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 940 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2221 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 2221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:43,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 190 Invalid, 2561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 2221 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-23 21:20:43,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33900 states. [2024-10-23 21:20:43,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33900 to 23721. [2024-10-23 21:20:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23721 states, 23720 states have (on average 1.0355817875210793) internal successors, (24564), 23720 states have internal predecessors, (24564), 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 21:20:43,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23721 states to 23721 states and 24564 transitions. [2024-10-23 21:20:43,635 INFO L78 Accepts]: Start accepts. Automaton has 23721 states and 24564 transitions. Word has length 934 [2024-10-23 21:20:43,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:43,636 INFO L471 AbstractCegarLoop]: Abstraction has 23721 states and 24564 transitions. [2024-10-23 21:20:43,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.5) internal successors, (657), 6 states have internal predecessors, (657), 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 21:20:43,636 INFO L276 IsEmpty]: Start isEmpty. Operand 23721 states and 24564 transitions. [2024-10-23 21:20:43,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2024-10-23 21:20:43,650 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:43,650 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:20:43,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-23 21:20:43,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:43,851 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:43,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:43,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1284016719, now seen corresponding path program 1 times [2024-10-23 21:20:43,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:43,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448263503] [2024-10-23 21:20:43,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:43,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:45,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 800 proven. 179 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-23 21:20:45,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:45,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448263503] [2024-10-23 21:20:45,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448263503] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:20:45,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739953588] [2024-10-23 21:20:45,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:45,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:45,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:20:45,568 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:20:45,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 21:20:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:45,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 21:20:45,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:20:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 769 proven. 49 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2024-10-23 21:20:46,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:20:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 818 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2024-10-23 21:20:46,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739953588] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:20:46,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:20:46,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 10 [2024-10-23 21:20:46,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66261236] [2024-10-23 21:20:46,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:46,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:20:46,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:46,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:20:46,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-23 21:20:46,851 INFO L87 Difference]: Start difference. First operand 23721 states and 24564 transitions. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 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)