./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array23_pattern.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/array-patterns/array23_pattern.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 e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 19:58:15,640 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 19:58:15,688 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 19:58:15,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 19:58:15,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 19:58:15,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 19:58:15,720 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 19:58:15,721 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 19:58:15,721 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 19:58:15,727 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 19:58:15,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 19:58:15,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 19:58:15,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 19:58:15,728 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 19:58:15,729 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 19:58:15,729 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 19:58:15,729 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 19:58:15,729 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 19:58:15,730 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 19:58:15,730 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 19:58:15,730 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 19:58:15,730 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 19:58:15,731 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 19:58:15,731 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 19:58:15,731 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 19:58:15,731 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 19:58:15,731 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 19:58:15,732 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 19:58:15,732 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 19:58:15,732 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 19:58:15,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 19:58:15,732 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 19:58:15,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 19:58:15,733 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 19:58:15,733 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 19:58:15,733 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 19:58:15,733 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 19:58:15,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 19:58:15,734 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 19:58:15,734 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 19:58:15,734 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 19:58:15,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 19:58:15,735 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 [2024-10-23 19:58:15,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 19:58:15,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 19:58:15,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 19:58:15,944 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 19:58:15,945 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 19:58:15,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array23_pattern.c [2024-10-23 19:58:17,218 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 19:58:17,357 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 19:58:17,358 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array23_pattern.c [2024-10-23 19:58:17,363 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52d297bd4/581f3bfee2d4425eb43255094d1ed2fc/FLAGf7971e82d [2024-10-23 19:58:17,373 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52d297bd4/581f3bfee2d4425eb43255094d1ed2fc [2024-10-23 19:58:17,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 19:58:17,376 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 19:58:17,377 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 19:58:17,377 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 19:58:17,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 19:58:17,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:58:17" (1/1) ... [2024-10-23 19:58:17,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3338cfc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:17, skipping insertion in model container [2024-10-23 19:58:17,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:58:17" (1/1) ... [2024-10-23 19:58:17,399 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 19:58:17,542 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/array-patterns/array23_pattern.c[1347,1360] [2024-10-23 19:58:17,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 19:58:17,571 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 19:58:17,580 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/array-patterns/array23_pattern.c[1347,1360] [2024-10-23 19:58:17,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 19:58:17,612 INFO L204 MainTranslator]: Completed translation [2024-10-23 19:58:17,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:17 WrapperNode [2024-10-23 19:58:17,613 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 19:58:17,614 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 19:58:17,614 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 19:58:17,614 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 19:58:17,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:17" (1/1) ... [2024-10-23 19:58:17,628 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:17" (1/1) ... [2024-10-23 19:58:17,650 INFO L138 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 110 [2024-10-23 19:58:17,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 19:58:17,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 19:58:17,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 19:58:17,651 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 19:58:17,659 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:17" (1/1) ... [2024-10-23 19:58:17,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:17" (1/1) ... [2024-10-23 19:58:17,662 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:17" (1/1) ... [2024-10-23 19:58:17,676 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-23 19:58:17,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:17" (1/1) ... [2024-10-23 19:58:17,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:17" (1/1) ... [2024-10-23 19:58:17,683 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:17" (1/1) ... [2024-10-23 19:58:17,688 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:17" (1/1) ... [2024-10-23 19:58:17,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:17" (1/1) ... [2024-10-23 19:58:17,690 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:17" (1/1) ... [2024-10-23 19:58:17,693 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 19:58:17,694 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 19:58:17,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 19:58:17,695 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 19:58:17,695 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:17" (1/1) ... [2024-10-23 19:58:17,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 19:58:17,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:58:17,724 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 19:58:17,731 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 19:58:17,768 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2024-10-23 19:58:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2024-10-23 19:58:17,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 19:58:17,768 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-23 19:58:17,769 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-23 19:58:17,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 19:58:17,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 19:58:17,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 19:58:17,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-23 19:58:17,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-23 19:58:17,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 19:58:17,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 19:58:17,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-23 19:58:17,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-23 19:58:17,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 19:58:17,839 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 19:58:17,840 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 19:58:18,055 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-10-23 19:58:18,055 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 19:58:18,087 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 19:58:18,088 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-23 19:58:18,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:58:18 BoogieIcfgContainer [2024-10-23 19:58:18,089 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 19:58:18,091 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 19:58:18,092 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 19:58:18,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 19:58:18,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:58:17" (1/3) ... [2024-10-23 19:58:18,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1b4d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:58:18, skipping insertion in model container [2024-10-23 19:58:18,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:58:17" (2/3) ... [2024-10-23 19:58:18,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1b4d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:58:18, skipping insertion in model container [2024-10-23 19:58:18,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:58:18" (3/3) ... [2024-10-23 19:58:18,098 INFO L112 eAbstractionObserver]: Analyzing ICFG array23_pattern.c [2024-10-23 19:58:18,113 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 19:58:18,113 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 19:58:18,168 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 19:58:18,174 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;@148d15c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 19:58:18,175 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 19:58:18,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-23 19:58:18,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-23 19:58:18,188 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:58:18,189 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:58:18,190 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:58:18,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:58:18,195 INFO L85 PathProgramCache]: Analyzing trace with hash 993482277, now seen corresponding path program 1 times [2024-10-23 19:58:18,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:58:18,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191038498] [2024-10-23 19:58:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:18,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:58:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:18,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 19:58:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:18,347 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 19:58:18,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:58:18,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191038498] [2024-10-23 19:58:18,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191038498] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:58:18,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 19:58:18,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 19:58:18,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112664300] [2024-10-23 19:58:18,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:58:18,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 19:58:18,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:58:18,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 19:58:18,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 19:58:18,373 INFO L87 Difference]: Start difference. First operand has 36 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-23 19:58:18,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:58:18,397 INFO L93 Difference]: Finished difference Result 70 states and 108 transitions. [2024-10-23 19:58:18,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 19:58:18,401 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-10-23 19:58:18,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:58:18,408 INFO L225 Difference]: With dead ends: 70 [2024-10-23 19:58:18,408 INFO L226 Difference]: Without dead ends: 34 [2024-10-23 19:58:18,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 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 19:58:18,414 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:58:18,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:58:18,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-23 19:58:18,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-10-23 19:58:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-23 19:58:18,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2024-10-23 19:58:18,442 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 14 [2024-10-23 19:58:18,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:58:18,443 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2024-10-23 19:58:18,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-23 19:58:18,443 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2024-10-23 19:58:18,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-23 19:58:18,445 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:58:18,445 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 19:58:18,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 19:58:18,445 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:58:18,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:58:18,446 INFO L85 PathProgramCache]: Analyzing trace with hash 774600703, now seen corresponding path program 1 times [2024-10-23 19:58:18,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:58:18,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572093716] [2024-10-23 19:58:18,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:18,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:58:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:18,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 19:58:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:18,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-23 19:58:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:18,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-23 19:58:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:18,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-23 19:58:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:18,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-23 19:58:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-23 19:58:18,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:58:18,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572093716] [2024-10-23 19:58:18,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572093716] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:58:18,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 19:58:18,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 19:58:18,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529690890] [2024-10-23 19:58:18,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:58:18,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 19:58:18,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:58:18,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 19:58:18,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 19:58:18,723 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-23 19:58:18,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:58:18,739 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2024-10-23 19:58:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 19:58:18,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2024-10-23 19:58:18,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:58:18,741 INFO L225 Difference]: With dead ends: 41 [2024-10-23 19:58:18,741 INFO L226 Difference]: Without dead ends: 37 [2024-10-23 19:58:18,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 19:58:18,742 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 10 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:58:18,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 98 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:58:18,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-23 19:58:18,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-10-23 19:58:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-23 19:58:18,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2024-10-23 19:58:18,748 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 41 [2024-10-23 19:58:18,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:58:18,749 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2024-10-23 19:58:18,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-23 19:58:18,749 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2024-10-23 19:58:18,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-23 19:58:18,750 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:58:18,750 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 19:58:18,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 19:58:18,750 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:58:18,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:58:18,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1126091322, now seen corresponding path program 1 times [2024-10-23 19:58:18,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:58:18,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704662534] [2024-10-23 19:58:18,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:18,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:58:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:18,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 19:58:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:18,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-23 19:58:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:18,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-23 19:58:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:18,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-23 19:58:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:18,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-23 19:58:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:18,923 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-23 19:58:18,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:58:18,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704662534] [2024-10-23 19:58:18,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704662534] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:58:18,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 19:58:18,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-23 19:58:18,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094839229] [2024-10-23 19:58:18,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:58:18,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 19:58:18,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:58:18,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 19:58:18,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 19:58:18,926 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-23 19:58:19,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:58:19,052 INFO L93 Difference]: Finished difference Result 77 states and 100 transitions. [2024-10-23 19:58:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-23 19:58:19,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2024-10-23 19:58:19,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:58:19,054 INFO L225 Difference]: With dead ends: 77 [2024-10-23 19:58:19,054 INFO L226 Difference]: Without dead ends: 45 [2024-10-23 19:58:19,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 19:58:19,057 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 19:58:19,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 99 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 19:58:19,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-23 19:58:19,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2024-10-23 19:58:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-23 19:58:19,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2024-10-23 19:58:19,070 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 45 [2024-10-23 19:58:19,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:58:19,070 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2024-10-23 19:58:19,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-23 19:58:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2024-10-23 19:58:19,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-23 19:58:19,071 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:58:19,073 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 19:58:19,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 19:58:19,073 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:58:19,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:58:19,074 INFO L85 PathProgramCache]: Analyzing trace with hash 412743318, now seen corresponding path program 1 times [2024-10-23 19:58:19,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:58:19,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720493126] [2024-10-23 19:58:19,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:19,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:58:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:19,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 19:58:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:19,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-23 19:58:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:19,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-23 19:58:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:19,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-23 19:58:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:19,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-23 19:58:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-23 19:58:19,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:58:19,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720493126] [2024-10-23 19:58:19,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720493126] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:58:19,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 19:58:19,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 19:58:19,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803038774] [2024-10-23 19:58:19,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:58:19,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 19:58:19,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:58:19,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 19:58:19,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 19:58:19,209 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-23 19:58:19,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:58:19,268 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2024-10-23 19:58:19,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 19:58:19,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2024-10-23 19:58:19,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:58:19,270 INFO L225 Difference]: With dead ends: 76 [2024-10-23 19:58:19,270 INFO L226 Difference]: Without dead ends: 42 [2024-10-23 19:58:19,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 19:58:19,272 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:58:19,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 92 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:58:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-10-23 19:58:19,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2024-10-23 19:58:19,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-23 19:58:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2024-10-23 19:58:19,281 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 48 [2024-10-23 19:58:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:58:19,282 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2024-10-23 19:58:19,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-23 19:58:19,282 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2024-10-23 19:58:19,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-23 19:58:19,284 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:58:19,284 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 19:58:19,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 19:58:19,284 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:58:19,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:58:19,285 INFO L85 PathProgramCache]: Analyzing trace with hash -429315470, now seen corresponding path program 1 times [2024-10-23 19:58:19,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:58:19,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555930202] [2024-10-23 19:58:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:19,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:58:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:19,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 19:58:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:19,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-23 19:58:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:19,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-23 19:58:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:19,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-23 19:58:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:19,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-23 19:58:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-23 19:58:19,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:58:19,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555930202] [2024-10-23 19:58:19,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555930202] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:58:19,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925355444] [2024-10-23 19:58:19,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:19,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:58:19,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:58:19,473 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 19:58:19,476 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 19:58:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:19,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-23 19:58:19,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:58:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-23 19:58:19,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:58:19,722 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-23 19:58:19,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925355444] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:58:19,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:58:19,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-23 19:58:19,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682912855] [2024-10-23 19:58:19,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:58:19,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-23 19:58:19,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:58:19,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-23 19:58:19,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-10-23 19:58:19,729 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-23 19:58:19,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:58:19,849 INFO L93 Difference]: Finished difference Result 79 states and 101 transitions. [2024-10-23 19:58:19,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-23 19:58:19,850 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 49 [2024-10-23 19:58:19,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:58:19,851 INFO L225 Difference]: With dead ends: 79 [2024-10-23 19:58:19,851 INFO L226 Difference]: Without dead ends: 46 [2024-10-23 19:58:19,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-10-23 19:58:19,852 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 72 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 19:58:19,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 122 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 19:58:19,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-23 19:58:19,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2024-10-23 19:58:19,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-23 19:58:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2024-10-23 19:58:19,858 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 49 [2024-10-23 19:58:19,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:58:19,859 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2024-10-23 19:58:19,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-23 19:58:19,859 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2024-10-23 19:58:19,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-23 19:58:19,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:58:19,860 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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 19:58:19,875 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 19:58:20,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:58:20,065 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:58:20,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:58:20,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1120416855, now seen corresponding path program 2 times [2024-10-23 19:58:20,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:58:20,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787531322] [2024-10-23 19:58:20,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:20,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:58:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:20,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 19:58:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:20,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-23 19:58:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:20,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-23 19:58:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:20,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-23 19:58:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:20,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-23 19:58:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-23 19:58:20,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:58:20,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787531322] [2024-10-23 19:58:20,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787531322] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:58:20,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51372976] [2024-10-23 19:58:20,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 19:58:20,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:58:20,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:58:20,161 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 19:58:20,170 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 19:58:20,225 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 19:58:20,225 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 19:58:20,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 19:58:20,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:58:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-23 19:58:20,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:58:20,340 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-23 19:58:20,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51372976] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:58:20,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:58:20,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-23 19:58:20,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118432998] [2024-10-23 19:58:20,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:58:20,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-23 19:58:20,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:58:20,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-23 19:58:20,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-23 19:58:20,344 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-23 19:58:20,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:58:20,462 INFO L93 Difference]: Finished difference Result 93 states and 115 transitions. [2024-10-23 19:58:20,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-23 19:58:20,463 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 51 [2024-10-23 19:58:20,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:58:20,464 INFO L225 Difference]: With dead ends: 93 [2024-10-23 19:58:20,464 INFO L226 Difference]: Without dead ends: 62 [2024-10-23 19:58:20,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-23 19:58:20,465 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 26 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 19:58:20,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 212 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 19:58:20,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-23 19:58:20,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2024-10-23 19:58:20,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-23 19:58:20,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2024-10-23 19:58:20,471 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 51 [2024-10-23 19:58:20,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:58:20,472 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2024-10-23 19:58:20,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-23 19:58:20,472 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2024-10-23 19:58:20,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-23 19:58:20,473 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:58:20,473 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2024-10-23 19:58:20,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-23 19:58:20,677 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,SelfDestructingSolverStorable5 [2024-10-23 19:58:20,678 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:58:20,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:58:20,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1454765375, now seen corresponding path program 3 times [2024-10-23 19:58:20,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:58:20,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866968169] [2024-10-23 19:58:20,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:20,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:58:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-23 19:58:20,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930527957] [2024-10-23 19:58:20,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 19:58:20,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:58:20,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:58:20,734 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 19:58:20,735 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 19:58:21,940 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-10-23 19:58:21,940 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 19:58:21,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-10-23 19:58:21,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:58:22,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-23 19:58:22,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-23 19:58:22,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:22,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:22,186 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 19:58:22,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2024-10-23 19:58:22,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:22,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:22,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:22,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:22,242 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 19:58:22,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-10-23 19:58:23,254 INFO L349 Elim1Store]: treesize reduction 208, result has 33.5 percent of original size [2024-10-23 19:58:23,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 74 treesize of output 142 [2024-10-23 19:58:24,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 126 [2024-10-23 19:58:24,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:24,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:24,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:24,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:24,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:24,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:24,292 INFO L349 Elim1Store]: treesize reduction 212, result has 0.5 percent of original size [2024-10-23 19:58:24,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 126 treesize of output 223 [2024-10-23 19:58:24,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:24,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:24,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:24,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:24,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:24,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:24,634 INFO L349 Elim1Store]: treesize reduction 144, result has 37.1 percent of original size [2024-10-23 19:58:24,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 137 treesize of output 171 [2024-10-23 19:58:25,928 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 19:58:25,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 149 treesize of output 69 [2024-10-23 19:58:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 19:58:26,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:58:27,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:58:27,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866968169] [2024-10-23 19:58:27,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-23 19:58:27,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930527957] [2024-10-23 19:58:27,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930527957] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:58:27,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-23 19:58:27,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2024-10-23 19:58:27,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274307552] [2024-10-23 19:58:27,681 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-23 19:58:27,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-23 19:58:27,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:58:27,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-23 19:58:27,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=3370, Unknown=0, NotChecked=0, Total=3782 [2024-10-23 19:58:27,685 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 42 states, 40 states have (on average 1.275) internal successors, (51), 39 states have internal predecessors, (51), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-23 19:58:29,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:58:29,221 INFO L93 Difference]: Finished difference Result 154 states and 193 transitions. [2024-10-23 19:58:29,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-10-23 19:58:29,222 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 1.275) internal successors, (51), 39 states have internal predecessors, (51), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 61 [2024-10-23 19:58:29,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:58:29,223 INFO L225 Difference]: With dead ends: 154 [2024-10-23 19:58:29,223 INFO L226 Difference]: Without dead ends: 109 [2024-10-23 19:58:29,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2001 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=520, Invalid=4310, Unknown=0, NotChecked=0, Total=4830 [2024-10-23 19:58:29,225 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 89 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 19:58:29,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 394 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 19:58:29,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-10-23 19:58:29,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2024-10-23 19:58:29,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 77 states have internal predecessors, (92), 9 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-10-23 19:58:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2024-10-23 19:58:29,258 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 111 transitions. Word has length 61 [2024-10-23 19:58:29,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:58:29,258 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 111 transitions. [2024-10-23 19:58:29,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 1.275) internal successors, (51), 39 states have internal predecessors, (51), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-23 19:58:29,258 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2024-10-23 19:58:29,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-23 19:58:29,259 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:58:29,259 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2024-10-23 19:58:29,289 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 19:58:29,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:58:29,460 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:58:29,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:58:29,461 INFO L85 PathProgramCache]: Analyzing trace with hash -539379331, now seen corresponding path program 1 times [2024-10-23 19:58:29,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:58:29,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982478299] [2024-10-23 19:58:29,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:29,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:58:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:29,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 19:58:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:29,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-23 19:58:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:29,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-23 19:58:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:29,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-23 19:58:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:29,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-23 19:58:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-23 19:58:29,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:58:29,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982478299] [2024-10-23 19:58:29,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982478299] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:58:29,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 19:58:29,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 19:58:29,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894393553] [2024-10-23 19:58:29,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:58:29,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 19:58:29,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:58:29,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 19:58:29,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 19:58:29,548 INFO L87 Difference]: Start difference. First operand 93 states and 111 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-23 19:58:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:58:29,571 INFO L93 Difference]: Finished difference Result 133 states and 161 transitions. [2024-10-23 19:58:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 19:58:29,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 61 [2024-10-23 19:58:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:58:29,574 INFO L225 Difference]: With dead ends: 133 [2024-10-23 19:58:29,574 INFO L226 Difference]: Without dead ends: 97 [2024-10-23 19:58:29,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 19:58:29,574 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:58:29,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:58:29,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-10-23 19:58:29,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-10-23 19:58:29,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 80 states have internal predecessors, (94), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-23 19:58:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 115 transitions. [2024-10-23 19:58:29,593 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 115 transitions. Word has length 61 [2024-10-23 19:58:29,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:58:29,593 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 115 transitions. [2024-10-23 19:58:29,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-23 19:58:29,594 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 115 transitions. [2024-10-23 19:58:29,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-23 19:58:29,595 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:58:29,595 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2024-10-23 19:58:29,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 19:58:29,595 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:58:29,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:58:29,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1516804989, now seen corresponding path program 1 times [2024-10-23 19:58:29,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:58:29,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937449296] [2024-10-23 19:58:29,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:29,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:58:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:29,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 19:58:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:29,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-23 19:58:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:29,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-23 19:58:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:29,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-23 19:58:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:29,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-23 19:58:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-23 19:58:29,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:58:29,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937449296] [2024-10-23 19:58:29,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937449296] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:58:29,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092923859] [2024-10-23 19:58:29,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:29,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:58:29,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:58:29,668 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 19:58:29,670 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 19:58:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:29,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 19:58:29,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:58:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-23 19:58:29,741 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 19:58:29,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092923859] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:58:29,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 19:58:29,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-23 19:58:29,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199618898] [2024-10-23 19:58:29,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:58:29,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 19:58:29,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:58:29,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 19:58:29,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 19:58:29,742 INFO L87 Difference]: Start difference. First operand 97 states and 115 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-23 19:58:29,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:58:29,761 INFO L93 Difference]: Finished difference Result 139 states and 167 transitions. [2024-10-23 19:58:29,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 19:58:29,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-23 19:58:29,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:58:29,763 INFO L225 Difference]: With dead ends: 139 [2024-10-23 19:58:29,763 INFO L226 Difference]: Without dead ends: 99 [2024-10-23 19:58:29,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 19:58:29,763 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:58:29,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:58:29,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-10-23 19:58:29,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-10-23 19:58:29,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 81 states have internal predecessors, (95), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-23 19:58:29,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 116 transitions. [2024-10-23 19:58:29,775 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 116 transitions. Word has length 61 [2024-10-23 19:58:29,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:58:29,776 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 116 transitions. [2024-10-23 19:58:29,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-23 19:58:29,776 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 116 transitions. [2024-10-23 19:58:29,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-23 19:58:29,776 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:58:29,777 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2024-10-23 19:58:29,789 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 19:58:29,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:58:29,979 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:58:29,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:58:29,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1466081502, now seen corresponding path program 1 times [2024-10-23 19:58:29,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:58:29,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46850915] [2024-10-23 19:58:29,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:29,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:58:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:30,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 19:58:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:30,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-23 19:58:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:30,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-23 19:58:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:30,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-23 19:58:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:30,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-23 19:58:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-23 19:58:30,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:58:30,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46850915] [2024-10-23 19:58:30,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46850915] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:58:30,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931266070] [2024-10-23 19:58:30,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:30,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:58:30,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:58:30,041 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 19:58:30,045 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 19:58:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:30,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-23 19:58:30,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:58:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-23 19:58:30,115 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 19:58:30,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931266070] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:58:30,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 19:58:30,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-10-23 19:58:30,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215076500] [2024-10-23 19:58:30,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:58:30,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 19:58:30,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:58:30,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 19:58:30,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 19:58:30,116 INFO L87 Difference]: Start difference. First operand 99 states and 116 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-23 19:58:30,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:58:30,146 INFO L93 Difference]: Finished difference Result 141 states and 167 transitions. [2024-10-23 19:58:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 19:58:30,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2024-10-23 19:58:30,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:58:30,147 INFO L225 Difference]: With dead ends: 141 [2024-10-23 19:58:30,147 INFO L226 Difference]: Without dead ends: 99 [2024-10-23 19:58:30,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 19:58:30,148 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:58:30,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:58:30,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-10-23 19:58:30,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-10-23 19:58:30,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 81 states have (on average 1.1604938271604939) internal successors, (94), 81 states have internal predecessors, (94), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-23 19:58:30,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2024-10-23 19:58:30,163 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 61 [2024-10-23 19:58:30,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:58:30,163 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2024-10-23 19:58:30,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-23 19:58:30,163 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2024-10-23 19:58:30,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-23 19:58:30,164 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:58:30,164 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2024-10-23 19:58:30,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-23 19:58:30,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-23 19:58:30,365 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:58:30,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:58:30,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1528121116, now seen corresponding path program 1 times [2024-10-23 19:58:30,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:58:30,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278077997] [2024-10-23 19:58:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:30,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:58:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:30,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 19:58:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:30,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-23 19:58:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:30,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-23 19:58:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:30,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-23 19:58:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:30,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-23 19:58:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-23 19:58:30,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:58:30,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278077997] [2024-10-23 19:58:30,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278077997] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:58:30,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338687262] [2024-10-23 19:58:30,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:30,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:58:30,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:58:30,530 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 19:58:30,531 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 19:58:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:30,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-23 19:58:30,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:58:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-23 19:58:30,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:58:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-23 19:58:30,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338687262] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:58:30,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:58:30,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 7] total 16 [2024-10-23 19:58:30,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244425525] [2024-10-23 19:58:30,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:58:30,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-23 19:58:30,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:58:30,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-23 19:58:30,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-10-23 19:58:30,817 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-23 19:58:31,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:58:31,066 INFO L93 Difference]: Finished difference Result 209 states and 254 transitions. [2024-10-23 19:58:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-23 19:58:31,066 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 61 [2024-10-23 19:58:31,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:58:31,067 INFO L225 Difference]: With dead ends: 209 [2024-10-23 19:58:31,067 INFO L226 Difference]: Without dead ends: 167 [2024-10-23 19:58:31,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-10-23 19:58:31,068 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 29 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 19:58:31,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 315 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 19:58:31,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-10-23 19:58:31,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 103. [2024-10-23 19:58:31,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 84 states have (on average 1.1547619047619047) internal successors, (97), 84 states have internal predecessors, (97), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (13), 11 states have call predecessors, (13), 10 states have call successors, (13) [2024-10-23 19:58:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 120 transitions. [2024-10-23 19:58:31,080 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 120 transitions. Word has length 61 [2024-10-23 19:58:31,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:58:31,080 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 120 transitions. [2024-10-23 19:58:31,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-23 19:58:31,081 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 120 transitions. [2024-10-23 19:58:31,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-23 19:58:31,081 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:58:31,081 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2024-10-23 19:58:31,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-23 19:58:31,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:58:31,286 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:58:31,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:58:31,286 INFO L85 PathProgramCache]: Analyzing trace with hash -509935173, now seen corresponding path program 1 times [2024-10-23 19:58:31,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:58:31,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588795869] [2024-10-23 19:58:31,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:31,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:58:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:31,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 19:58:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:31,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-23 19:58:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:31,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-23 19:58:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:31,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-23 19:58:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:31,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-23 19:58:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:31,329 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-23 19:58:31,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:58:31,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588795869] [2024-10-23 19:58:31,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588795869] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:58:31,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 19:58:31,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 19:58:31,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753761022] [2024-10-23 19:58:31,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:58:31,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 19:58:31,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:58:31,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 19:58:31,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 19:58:31,331 INFO L87 Difference]: Start difference. First operand 103 states and 120 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-23 19:58:31,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:58:31,351 INFO L93 Difference]: Finished difference Result 149 states and 175 transitions. [2024-10-23 19:58:31,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 19:58:31,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 61 [2024-10-23 19:58:31,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:58:31,352 INFO L225 Difference]: With dead ends: 149 [2024-10-23 19:58:31,352 INFO L226 Difference]: Without dead ends: 103 [2024-10-23 19:58:31,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 19:58:31,353 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:58:31,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:58:31,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-10-23 19:58:31,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-10-23 19:58:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 84 states have internal predecessors, (96), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (13), 11 states have call predecessors, (13), 10 states have call successors, (13) [2024-10-23 19:58:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2024-10-23 19:58:31,363 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 61 [2024-10-23 19:58:31,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:58:31,363 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2024-10-23 19:58:31,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-23 19:58:31,364 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2024-10-23 19:58:31,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-23 19:58:31,364 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:58:31,364 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2024-10-23 19:58:31,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 19:58:31,365 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:58:31,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:58:31,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1790887417, now seen corresponding path program 1 times [2024-10-23 19:58:31,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:58:31,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803084267] [2024-10-23 19:58:31,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:31,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:58:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:31,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 19:58:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:31,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-23 19:58:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:31,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-23 19:58:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:31,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-23 19:58:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:31,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-23 19:58:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-23 19:58:31,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:58:31,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803084267] [2024-10-23 19:58:31,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803084267] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:58:31,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58508584] [2024-10-23 19:58:31,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:31,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:58:31,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:58:31,554 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:58:31,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-23 19:58:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:31,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-23 19:58:31,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:58:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-23 19:58:31,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:58:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-23 19:58:31,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58508584] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:58:31,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:58:31,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 21 [2024-10-23 19:58:31,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661039009] [2024-10-23 19:58:31,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:58:31,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-23 19:58:31,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:58:31,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-23 19:58:31,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-10-23 19:58:31,919 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 states have internal predecessors, (65), 5 states have call successors, (12), 3 states have call predecessors, (12), 7 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2024-10-23 19:58:32,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:58:32,165 INFO L93 Difference]: Finished difference Result 229 states and 268 transitions. [2024-10-23 19:58:32,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-23 19:58:32,165 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 states have internal predecessors, (65), 5 states have call successors, (12), 3 states have call predecessors, (12), 7 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) Word has length 61 [2024-10-23 19:58:32,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:58:32,166 INFO L225 Difference]: With dead ends: 229 [2024-10-23 19:58:32,166 INFO L226 Difference]: Without dead ends: 179 [2024-10-23 19:58:32,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 116 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2024-10-23 19:58:32,167 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 36 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 19:58:32,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 268 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 19:58:32,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-10-23 19:58:32,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 149. [2024-10-23 19:58:32,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 121 states have (on average 1.1487603305785123) internal successors, (139), 122 states have internal predecessors, (139), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (18), 15 states have call predecessors, (18), 16 states have call successors, (18) [2024-10-23 19:58:32,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 173 transitions. [2024-10-23 19:58:32,185 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 173 transitions. Word has length 61 [2024-10-23 19:58:32,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:58:32,185 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 173 transitions. [2024-10-23 19:58:32,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 states have internal predecessors, (65), 5 states have call successors, (12), 3 states have call predecessors, (12), 7 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2024-10-23 19:58:32,185 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 173 transitions. [2024-10-23 19:58:32,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-23 19:58:32,186 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:58:32,186 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 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] [2024-10-23 19:58:32,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-23 19:58:32,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:58:32,387 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:58:32,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:58:32,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1331678125, now seen corresponding path program 4 times [2024-10-23 19:58:32,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:58:32,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338254118] [2024-10-23 19:58:32,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:32,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:58:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:32,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 19:58:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:32,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-23 19:58:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:32,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-23 19:58:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:32,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-23 19:58:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:32,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-23 19:58:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-23 19:58:32,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:58:32,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338254118] [2024-10-23 19:58:32,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338254118] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:58:32,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778797166] [2024-10-23 19:58:32,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-23 19:58:32,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:58:32,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:58:32,487 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:58:32,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-23 19:58:32,544 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-23 19:58:32,544 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 19:58:32,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-23 19:58:32,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:58:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-23 19:58:32,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:58:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-23 19:58:32,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778797166] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:58:32,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:58:32,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-23 19:58:32,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586993513] [2024-10-23 19:58:32,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:58:32,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-23 19:58:32,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:58:32,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-23 19:58:32,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-23 19:58:32,626 INFO L87 Difference]: Start difference. First operand 149 states and 173 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-23 19:58:32,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:58:32,753 INFO L93 Difference]: Finished difference Result 210 states and 245 transitions. [2024-10-23 19:58:32,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-23 19:58:32,753 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 62 [2024-10-23 19:58:32,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:58:32,754 INFO L225 Difference]: With dead ends: 210 [2024-10-23 19:58:32,755 INFO L226 Difference]: Without dead ends: 159 [2024-10-23 19:58:32,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-23 19:58:32,755 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 31 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 19:58:32,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 209 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 19:58:32,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-10-23 19:58:32,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2024-10-23 19:58:32,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 127 states have (on average 1.1338582677165354) internal successors, (144), 128 states have internal predecessors, (144), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (18), 15 states have call predecessors, (18), 16 states have call successors, (18) [2024-10-23 19:58:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 178 transitions. [2024-10-23 19:58:32,771 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 178 transitions. Word has length 62 [2024-10-23 19:58:32,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:58:32,771 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 178 transitions. [2024-10-23 19:58:32,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-23 19:58:32,771 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 178 transitions. [2024-10-23 19:58:32,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-23 19:58:32,772 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:58:32,772 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 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] [2024-10-23 19:58:32,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-23 19:58:32,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-23 19:58:32,976 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:58:32,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:58:32,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1763084497, now seen corresponding path program 5 times [2024-10-23 19:58:32,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:58:32,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038523289] [2024-10-23 19:58:32,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:32,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:58:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:33,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 19:58:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:33,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-23 19:58:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:33,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-23 19:58:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:33,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-23 19:58:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:33,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-23 19:58:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:33,073 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-23 19:58:33,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:58:33,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038523289] [2024-10-23 19:58:33,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038523289] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:58:33,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712725962] [2024-10-23 19:58:33,073 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-23 19:58:33,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:58:33,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:58:33,079 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:58:33,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-23 19:58:33,145 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-10-23 19:58:33,145 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 19:58:33,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-23 19:58:33,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:58:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-23 19:58:33,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:58:33,302 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-23 19:58:33,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712725962] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:58:33,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:58:33,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-10-23 19:58:33,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082793714] [2024-10-23 19:58:33,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:58:33,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-23 19:58:33,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:58:33,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-23 19:58:33,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2024-10-23 19:58:33,304 INFO L87 Difference]: Start difference. First operand 155 states and 178 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-23 19:58:33,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:58:33,516 INFO L93 Difference]: Finished difference Result 287 states and 334 transitions. [2024-10-23 19:58:33,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-23 19:58:33,516 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 63 [2024-10-23 19:58:33,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:58:33,517 INFO L225 Difference]: With dead ends: 287 [2024-10-23 19:58:33,517 INFO L226 Difference]: Without dead ends: 177 [2024-10-23 19:58:33,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2024-10-23 19:58:33,518 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 49 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 19:58:33,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 181 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 19:58:33,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-10-23 19:58:33,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 156. [2024-10-23 19:58:33,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 130 states have (on average 1.146153846153846) internal successors, (149), 130 states have internal predecessors, (149), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2024-10-23 19:58:33,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 181 transitions. [2024-10-23 19:58:33,534 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 181 transitions. Word has length 63 [2024-10-23 19:58:33,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:58:33,534 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 181 transitions. [2024-10-23 19:58:33,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-23 19:58:33,534 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 181 transitions. [2024-10-23 19:58:33,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-23 19:58:33,535 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:58:33,535 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 19:58:33,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-23 19:58:33,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-23 19:58:33,736 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:58:33,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:58:33,736 INFO L85 PathProgramCache]: Analyzing trace with hash -935028437, now seen corresponding path program 6 times [2024-10-23 19:58:33,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:58:33,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402173400] [2024-10-23 19:58:33,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:33,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:58:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:33,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-23 19:58:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:33,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-23 19:58:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:33,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-23 19:58:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:33,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-23 19:58:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:33,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-23 19:58:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 14 proven. 38 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-23 19:58:33,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:58:33,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402173400] [2024-10-23 19:58:33,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402173400] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:58:33,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954698957] [2024-10-23 19:58:33,854 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-23 19:58:33,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:58:33,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:58:33,856 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:58:33,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-23 19:58:34,556 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-10-23 19:58:34,556 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 19:58:34,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-23 19:58:34,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:58:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 57 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-23 19:58:34,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:58:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 40 proven. 24 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-23 19:58:34,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954698957] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:58:34,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:58:34,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-23 19:58:34,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537106704] [2024-10-23 19:58:34,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:58:34,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-23 19:58:34,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:58:34,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-23 19:58:34,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-23 19:58:34,714 INFO L87 Difference]: Start difference. First operand 156 states and 181 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-23 19:58:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:58:34,821 INFO L93 Difference]: Finished difference Result 196 states and 223 transitions. [2024-10-23 19:58:34,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-23 19:58:34,822 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 68 [2024-10-23 19:58:34,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:58:34,823 INFO L225 Difference]: With dead ends: 196 [2024-10-23 19:58:34,823 INFO L226 Difference]: Without dead ends: 147 [2024-10-23 19:58:34,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 138 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-10-23 19:58:34,823 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 8 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 19:58:34,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 298 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 19:58:34,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-10-23 19:58:34,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2024-10-23 19:58:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 119 states have (on average 1.1092436974789917) internal successors, (132), 118 states have internal predecessors, (132), 14 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2024-10-23 19:58:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 162 transitions. [2024-10-23 19:58:34,839 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 162 transitions. Word has length 68 [2024-10-23 19:58:34,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:58:34,839 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 162 transitions. [2024-10-23 19:58:34,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-23 19:58:34,840 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 162 transitions. [2024-10-23 19:58:34,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-23 19:58:34,840 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:58:34,840 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 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] [2024-10-23 19:58:34,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-23 19:58:35,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-23 19:58:35,041 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:58:35,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:58:35,041 INFO L85 PathProgramCache]: Analyzing trace with hash 6390840, now seen corresponding path program 7 times [2024-10-23 19:58:35,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:58:35,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057419433] [2024-10-23 19:58:35,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:58:35,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:58:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-23 19:58:35,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431727391] [2024-10-23 19:58:35,078 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-23 19:58:35,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:58:35,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:58:35,080 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:58:35,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-23 19:58:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:58:38,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-10-23 19:58:38,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:58:38,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-23 19:58:38,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-23 19:58:38,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 19:58:38,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-10-23 19:58:38,265 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 19:58:38,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-10-23 19:58:38,312 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 19:58:38,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-10-23 19:58:38,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 19:58:38,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-10-23 19:58:38,561 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 19:58:38,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-10-23 19:58:38,651 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 19:58:38,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2024-10-23 19:58:38,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 19:58:38,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2024-10-23 19:58:39,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:39,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:39,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:40,120 INFO L349 Elim1Store]: treesize reduction 336, result has 31.8 percent of original size [2024-10-23 19:58:40,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 39 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 165 case distinctions, treesize of input 144 treesize of output 266 [2024-10-23 19:58:41,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 167 [2024-10-23 19:58:41,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:41,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:41,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:41,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:41,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:41,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:41,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:41,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:41,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:41,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:41,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:41,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:41,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:41,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:41,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:41,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:41,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-23 19:58:41,980 INFO L349 Elim1Store]: treesize reduction 318, result has 0.3 percent of original size [2024-10-23 19:58:41,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 10 select indices, 10 select index equivalence classes, 54 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 12 case distinctions, treesize of input 167 treesize of output 294 [2024-10-23 19:59:10,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1700 treesize of output 1562 [2024-10-23 19:59:11,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-23 19:59:11,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 36 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 69 case distinctions, treesize of input 1242 treesize of output 1295 [2024-10-23 19:59:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 11 proven. 154 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 19:59:19,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:59:51,884 WARN L286 SmtUtils]: Spent 8.86s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)