./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/condn.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/array-fpi/condn.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 d395fadb914a95d9511046d910130b84077290c26c4e0d02bd3863b898526b50 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:23:28,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:23:28,385 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:23:28,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:23:28,391 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:23:28,420 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:23:28,420 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:23:28,421 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:23:28,421 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:23:28,422 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:23:28,422 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:23:28,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:23:28,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:23:28,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:23:28,424 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:23:28,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:23:28,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:23:28,425 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:23:28,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:23:28,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:23:28,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:23:28,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:23:28,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:23:28,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:23:28,427 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:23:28,427 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:23:28,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:23:28,427 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:23:28,428 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:23:28,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:23:28,428 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:23:28,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:23:28,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:23:28,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:23:28,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:23:28,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:23:28,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:23:28,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:23:28,430 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:23:28,430 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:23:28,430 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:23:28,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:23:28,431 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d395fadb914a95d9511046d910130b84077290c26c4e0d02bd3863b898526b50 [2024-11-18 09:23:28,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:23:28,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:23:28,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:23:28,682 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:23:28,682 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:23:28,683 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/condn.c [2024-11-18 09:23:30,029 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:23:30,206 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:23:30,207 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condn.c [2024-11-18 09:23:30,216 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e90b11e1/07d0f1ff19c4481d9836f4806001c63f/FLAGb8f442091 [2024-11-18 09:23:30,598 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e90b11e1/07d0f1ff19c4481d9836f4806001c63f [2024-11-18 09:23:30,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:23:30,602 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:23:30,602 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:23:30,603 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:23:30,608 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:23:30,609 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:23:30" (1/1) ... [2024-11-18 09:23:30,609 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@829b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:30, skipping insertion in model container [2024-11-18 09:23:30,609 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:23:30" (1/1) ... [2024-11-18 09:23:30,639 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:23:30,841 WARN L250 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-fpi/condn.c[588,601] [2024-11-18 09:23:30,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:23:30,866 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:23:30,879 WARN L250 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-fpi/condn.c[588,601] [2024-11-18 09:23:30,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:23:30,898 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:23:30,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:30 WrapperNode [2024-11-18 09:23:30,899 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:23:30,900 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:23:30,900 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:23:30,900 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:23:30,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:30" (1/1) ... [2024-11-18 09:23:30,910 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:30" (1/1) ... [2024-11-18 09:23:30,930 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2024-11-18 09:23:30,930 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:23:30,931 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:23:30,931 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:23:30,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:23:30,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:30" (1/1) ... [2024-11-18 09:23:30,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:30" (1/1) ... [2024-11-18 09:23:30,940 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:30" (1/1) ... [2024-11-18 09:23:30,951 INFO L175 MemorySlicer]: Split 16 memory accesses to 3 slices as follows [2, 8, 6]. 50 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 3 writes are split as follows [0, 0, 3]. [2024-11-18 09:23:30,951 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:30" (1/1) ... [2024-11-18 09:23:30,951 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:30" (1/1) ... [2024-11-18 09:23:30,955 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:30" (1/1) ... [2024-11-18 09:23:30,972 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:30" (1/1) ... [2024-11-18 09:23:30,973 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:30" (1/1) ... [2024-11-18 09:23:30,974 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:30" (1/1) ... [2024-11-18 09:23:30,976 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:23:30,977 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:23:30,977 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:23:30,977 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:23:30,977 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:30" (1/1) ... [2024-11-18 09:23:30,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:23:30,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:31,019 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) [2024-11-18 09:23:31,021 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 [2024-11-18 09:23:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:23:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:23:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:23:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 09:23:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:23:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:23:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 09:23:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-18 09:23:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:23:31,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:23:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:23:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:23:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 09:23:31,170 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:23:31,172 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:23:31,313 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-18 09:23:31,314 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:23:31,324 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:23:31,328 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-18 09:23:31,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:23:31 BoogieIcfgContainer [2024-11-18 09:23:31,329 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:23:31,330 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:23:31,331 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:23:31,338 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:23:31,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:23:30" (1/3) ... [2024-11-18 09:23:31,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180aa2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:23:31, skipping insertion in model container [2024-11-18 09:23:31,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:23:30" (2/3) ... [2024-11-18 09:23:31,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180aa2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:23:31, skipping insertion in model container [2024-11-18 09:23:31,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:23:31" (3/3) ... [2024-11-18 09:23:31,343 INFO L112 eAbstractionObserver]: Analyzing ICFG condn.c [2024-11-18 09:23:31,372 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:23:31,376 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:23:31,426 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:23:31,432 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;@2686e8a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:23:31,432 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:23:31,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:31,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-18 09:23:31,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:31,440 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:31,441 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:31,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:31,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1828392228, now seen corresponding path program 1 times [2024-11-18 09:23:31,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:31,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340906371] [2024-11-18 09:23:31,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:23:31,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:23:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:31,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:31,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340906371] [2024-11-18 09:23:31,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340906371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:23:31,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:23:31,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:23:31,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742588162] [2024-11-18 09:23:31,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:23:31,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 09:23:31,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:31,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 09:23:31,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:23:31,604 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:31,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:31,615 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2024-11-18 09:23:31,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 09:23:31,619 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-18 09:23:31,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:31,627 INFO L225 Difference]: With dead ends: 40 [2024-11-18 09:23:31,627 INFO L226 Difference]: Without dead ends: 18 [2024-11-18 09:23:31,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:23:31,633 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:31,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:23:31,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-18 09:23:31,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-18 09:23:31,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:31,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-11-18 09:23:31,671 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2024-11-18 09:23:31,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:31,671 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-11-18 09:23:31,672 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:31,672 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-18 09:23:31,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-18 09:23:31,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:31,676 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:31,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:23:31,676 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:31,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:31,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1148333858, now seen corresponding path program 1 times [2024-11-18 09:23:31,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:31,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915879395] [2024-11-18 09:23:31,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:23:31,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:23:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:31,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:31,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915879395] [2024-11-18 09:23:31,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915879395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:23:31,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:23:31,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:23:31,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644809728] [2024-11-18 09:23:31,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:23:31,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:23:31,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:31,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:23:31,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:23:31,863 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:31,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:31,923 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-11-18 09:23:31,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:23:31,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-18 09:23:31,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:31,924 INFO L225 Difference]: With dead ends: 40 [2024-11-18 09:23:31,924 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 09:23:31,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:23:31,926 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 26 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:31,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 15 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:23:31,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 09:23:31,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2024-11-18 09:23:31,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:31,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-18 09:23:31,933 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2024-11-18 09:23:31,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:31,933 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-18 09:23:31,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:31,933 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-18 09:23:31,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-18 09:23:31,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:31,935 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:31,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:23:31,936 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:31,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:31,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2142875084, now seen corresponding path program 1 times [2024-11-18 09:23:31,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:31,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228312822] [2024-11-18 09:23:31,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:23:31,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:23:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:23:32,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:32,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228312822] [2024-11-18 09:23:32,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228312822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:32,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814644095] [2024-11-18 09:23:32,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:23:32,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:32,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:32,358 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) [2024-11-18 09:23:32,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 09:23:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:23:32,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 09:23:32,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:32,483 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 15 treesize of output 1 [2024-11-18 09:23:32,550 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 25 treesize of output 13 [2024-11-18 09:23:32,617 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 17 treesize of output 9 [2024-11-18 09:23:32,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:32,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:23:32,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814644095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:32,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:32,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2024-11-18 09:23:32,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628783879] [2024-11-18 09:23:32,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:32,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:23:32,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:32,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:23:32,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:23:32,738 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:32,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:32,937 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2024-11-18 09:23:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 09:23:32,940 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-18 09:23:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:32,941 INFO L225 Difference]: With dead ends: 45 [2024-11-18 09:23:32,941 INFO L226 Difference]: Without dead ends: 43 [2024-11-18 09:23:32,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2024-11-18 09:23:32,942 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 60 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:32,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 68 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:23:32,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-18 09:23:32,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 22. [2024-11-18 09:23:32,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:32,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-18 09:23:32,948 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2024-11-18 09:23:32,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:32,949 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-18 09:23:32,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:32,949 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-18 09:23:32,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-18 09:23:32,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:32,950 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:32,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 09:23:33,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:33,152 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:33,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:33,153 INFO L85 PathProgramCache]: Analyzing trace with hash 2090341226, now seen corresponding path program 1 times [2024-11-18 09:23:33,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:33,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329476140] [2024-11-18 09:23:33,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:23:33,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:23:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:23:33,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:33,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329476140] [2024-11-18 09:23:33,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329476140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:33,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863358080] [2024-11-18 09:23:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:23:33,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:33,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:33,238 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) [2024-11-18 09:23:33,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 09:23:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:23:33,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:23:33,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:23:33,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:33,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:23:33,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863358080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:33,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:33,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-18 09:23:33,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619596309] [2024-11-18 09:23:33,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:33,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 09:23:33,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:33,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 09:23:33,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:23:33,427 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:33,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:33,502 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2024-11-18 09:23:33,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 09:23:33,503 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-18 09:23:33,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:33,503 INFO L225 Difference]: With dead ends: 61 [2024-11-18 09:23:33,503 INFO L226 Difference]: Without dead ends: 38 [2024-11-18 09:23:33,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:23:33,504 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:33,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 44 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:23:33,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-18 09:23:33,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2024-11-18 09:23:33,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-11-18 09:23:33,512 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 21 [2024-11-18 09:23:33,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:33,512 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-11-18 09:23:33,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:33,512 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-11-18 09:23:33,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 09:23:33,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:33,513 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:33,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 09:23:33,717 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,SelfDestructingSolverStorable3 [2024-11-18 09:23:33,718 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:33,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:33,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1394926352, now seen corresponding path program 2 times [2024-11-18 09:23:33,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:33,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491342202] [2024-11-18 09:23:33,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:23:33,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:33,753 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:23:33,757 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:34,054 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:34,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:34,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491342202] [2024-11-18 09:23:34,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491342202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:34,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980908503] [2024-11-18 09:23:34,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:23:34,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:34,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:34,057 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) [2024-11-18 09:23:34,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 09:23:34,115 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:23:34,115 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:34,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-18 09:23:34,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:34,144 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 15 treesize of output 1 [2024-11-18 09:23:34,169 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 15 treesize of output 7 [2024-11-18 09:23:34,196 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 25 treesize of output 13 [2024-11-18 09:23:34,282 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 17 treesize of output 9 [2024-11-18 09:23:34,297 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:34,297 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 09:23:34,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980908503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:34,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:34,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 27 [2024-11-18 09:23:34,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224146024] [2024-11-18 09:23:34,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:34,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 09:23:34,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:34,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 09:23:34,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2024-11-18 09:23:34,447 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:34,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:34,923 INFO L93 Difference]: Finished difference Result 122 states and 145 transitions. [2024-11-18 09:23:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-18 09:23:34,924 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-18 09:23:34,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:34,925 INFO L225 Difference]: With dead ends: 122 [2024-11-18 09:23:34,925 INFO L226 Difference]: Without dead ends: 78 [2024-11-18 09:23:34,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=1643, Unknown=0, NotChecked=0, Total=2070 [2024-11-18 09:23:34,927 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 188 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:34,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 117 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:23:34,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-18 09:23:34,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 36. [2024-11-18 09:23:34,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:34,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-18 09:23:34,933 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 26 [2024-11-18 09:23:34,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:34,933 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-18 09:23:34,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:34,934 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-18 09:23:34,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-18 09:23:34,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:34,934 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:34,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 09:23:35,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:35,136 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:35,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:35,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1754360412, now seen corresponding path program 3 times [2024-11-18 09:23:35,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:35,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759232810] [2024-11-18 09:23:35,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:23:35,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:35,183 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 09:23:35,183 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:35,631 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 09:23:35,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:35,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759232810] [2024-11-18 09:23:35,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759232810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:35,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798924132] [2024-11-18 09:23:35,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:23:35,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:35,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:35,634 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) [2024-11-18 09:23:35,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 09:23:35,698 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 09:23:35,699 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:35,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-18 09:23:35,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:35,796 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 37 treesize of output 17 [2024-11-18 09:23:36,016 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-18 09:23:36,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 12 [2024-11-18 09:23:36,041 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 09:23:36,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:36,396 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 45 treesize of output 39 [2024-11-18 09:23:36,402 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-18 09:23:36,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 29 [2024-11-18 09:23:36,463 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 09:23:36,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798924132] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:36,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:36,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 36 [2024-11-18 09:23:36,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870038539] [2024-11-18 09:23:36,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:36,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-18 09:23:36,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:36,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-18 09:23:36,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 09:23:36,466 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 36 states, 36 states have (on average 2.0) internal successors, (72), 36 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:39,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:39,010 INFO L93 Difference]: Finished difference Result 150 states and 175 transitions. [2024-11-18 09:23:39,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-18 09:23:39,010 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0) internal successors, (72), 36 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-18 09:23:39,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:39,011 INFO L225 Difference]: With dead ends: 150 [2024-11-18 09:23:39,011 INFO L226 Difference]: Without dead ends: 68 [2024-11-18 09:23:39,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3065 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2029, Invalid=8071, Unknown=0, NotChecked=0, Total=10100 [2024-11-18 09:23:39,014 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 371 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:39,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 158 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 09:23:39,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-18 09:23:39,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 44. [2024-11-18 09:23:39,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.186046511627907) internal successors, (51), 43 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:39,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2024-11-18 09:23:39,019 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 35 [2024-11-18 09:23:39,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:39,019 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2024-11-18 09:23:39,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0) internal successors, (72), 36 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:39,020 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2024-11-18 09:23:39,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-18 09:23:39,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:39,020 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:39,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 09:23:39,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:39,225 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:39,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:39,225 INFO L85 PathProgramCache]: Analyzing trace with hash 831232640, now seen corresponding path program 1 times [2024-11-18 09:23:39,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:39,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051323132] [2024-11-18 09:23:39,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:23:39,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:23:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:39,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:39,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051323132] [2024-11-18 09:23:39,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051323132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:39,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384657959] [2024-11-18 09:23:39,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:23:39,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:39,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:39,695 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) [2024-11-18 09:23:39,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 09:23:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:23:39,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-18 09:23:39,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:39,827 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 15 treesize of output 1 [2024-11-18 09:23:39,864 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-18 09:23:39,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 20 [2024-11-18 09:23:40,057 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 15 treesize of output 7 [2024-11-18 09:23:40,071 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:23:40,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:40,179 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 18 treesize of output 16 [2024-11-18 09:23:40,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 14 [2024-11-18 09:23:40,230 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 09:23:40,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384657959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:40,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:40,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 10] total 33 [2024-11-18 09:23:40,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828680233] [2024-11-18 09:23:40,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:40,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-18 09:23:40,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:40,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-18 09:23:40,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 09:23:40,232 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 33 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:40,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:40,681 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2024-11-18 09:23:40,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 09:23:40,681 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-18 09:23:40,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:40,686 INFO L225 Difference]: With dead ends: 84 [2024-11-18 09:23:40,686 INFO L226 Difference]: Without dead ends: 82 [2024-11-18 09:23:40,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=403, Invalid=2047, Unknown=0, NotChecked=0, Total=2450 [2024-11-18 09:23:40,688 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 224 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:40,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 147 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:23:40,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-18 09:23:40,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 54. [2024-11-18 09:23:40,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:40,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-11-18 09:23:40,700 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 40 [2024-11-18 09:23:40,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:40,700 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-11-18 09:23:40,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:40,701 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-11-18 09:23:40,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-18 09:23:40,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:40,702 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:40,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 09:23:40,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:40,906 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:40,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:40,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1924331034, now seen corresponding path program 4 times [2024-11-18 09:23:40,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:40,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11356392] [2024-11-18 09:23:40,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:23:40,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:40,927 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:23:40,933 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 09:23:41,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:41,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11356392] [2024-11-18 09:23:41,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11356392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:41,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848246642] [2024-11-18 09:23:41,222 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:23:41,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:41,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:41,224 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) [2024-11-18 09:23:41,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:23:41,282 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:23:41,283 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:41,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 09:23:41,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:41,309 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 31 treesize of output 15 [2024-11-18 09:23:41,330 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-18 09:23:41,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 26 [2024-11-18 09:23:41,346 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-18 09:23:41,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 26 [2024-11-18 09:23:41,407 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 21 treesize of output 9 [2024-11-18 09:23:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 09:23:41,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:41,542 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 34 treesize of output 28 [2024-11-18 09:23:41,548 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-18 09:23:41,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 14 [2024-11-18 09:23:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 09:23:41,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848246642] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:41,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:41,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 21 [2024-11-18 09:23:41,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359649484] [2024-11-18 09:23:41,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:41,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 09:23:41,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:41,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 09:23:41,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-18 09:23:41,557 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:41,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:41,876 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2024-11-18 09:23:41,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 09:23:41,876 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-18 09:23:41,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:41,877 INFO L225 Difference]: With dead ends: 96 [2024-11-18 09:23:41,877 INFO L226 Difference]: Without dead ends: 94 [2024-11-18 09:23:41,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2024-11-18 09:23:41,878 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 50 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:41,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 185 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:23:41,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-18 09:23:41,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 48. [2024-11-18 09:23:41,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2024-11-18 09:23:41,883 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 43 [2024-11-18 09:23:41,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:41,884 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2024-11-18 09:23:41,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:41,884 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2024-11-18 09:23:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 09:23:41,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:41,884 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:41,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 09:23:42,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:42,085 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:42,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:42,086 INFO L85 PathProgramCache]: Analyzing trace with hash -30911050, now seen corresponding path program 2 times [2024-11-18 09:23:42,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:42,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647890808] [2024-11-18 09:23:42,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:23:42,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:42,109 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:23:42,109 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:42,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:42,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647890808] [2024-11-18 09:23:42,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647890808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:42,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42564112] [2024-11-18 09:23:42,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:23:42,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:42,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:42,602 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) [2024-11-18 09:23:42,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:23:42,667 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:23:42,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:42,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-18 09:23:42,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:42,719 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 15 treesize of output 1 [2024-11-18 09:23:42,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:23:42,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 23 [2024-11-18 09:23:43,012 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:23:43,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2024-11-18 09:23:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:23:43,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:43,269 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 80 treesize of output 70 [2024-11-18 09:23:43,273 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-18 09:23:43,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 81 [2024-11-18 09:23:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 09:23:43,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42564112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:43,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:43,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16, 15] total 45 [2024-11-18 09:23:43,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083769519] [2024-11-18 09:23:43,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:43,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-18 09:23:43,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:43,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-18 09:23:43,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1721, Unknown=0, NotChecked=0, Total=1980 [2024-11-18 09:23:43,353 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 45 states, 45 states have (on average 2.422222222222222) internal successors, (109), 45 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:44,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:44,968 INFO L93 Difference]: Finished difference Result 213 states and 245 transitions. [2024-11-18 09:23:44,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-18 09:23:44,968 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.422222222222222) internal successors, (109), 45 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-18 09:23:44,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:44,969 INFO L225 Difference]: With dead ends: 213 [2024-11-18 09:23:44,969 INFO L226 Difference]: Without dead ends: 110 [2024-11-18 09:23:44,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2886 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1449, Invalid=8253, Unknown=0, NotChecked=0, Total=9702 [2024-11-18 09:23:44,972 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 387 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:44,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 342 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:23:44,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-18 09:23:44,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 54. [2024-11-18 09:23:44,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.150943396226415) internal successors, (61), 53 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:44,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2024-11-18 09:23:44,984 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 44 [2024-11-18 09:23:44,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:44,984 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2024-11-18 09:23:44,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.422222222222222) internal successors, (109), 45 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:44,984 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2024-11-18 09:23:44,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-18 09:23:44,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:44,985 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:44,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 09:23:45,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:45,190 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:45,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:45,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1679516396, now seen corresponding path program 5 times [2024-11-18 09:23:45,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:45,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901156166] [2024-11-18 09:23:45,191 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:23:45,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:45,238 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 09:23:45,238 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:45,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:45,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901156166] [2024-11-18 09:23:45,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901156166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:45,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756231806] [2024-11-18 09:23:45,630 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:23:45,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:45,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:45,633 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) [2024-11-18 09:23:45,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 09:23:45,727 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 09:23:45,727 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:45,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-18 09:23:45,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:45,837 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 25 treesize of output 13 [2024-11-18 09:23:45,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:23:45,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-18 09:23:45,928 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:23:45,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-18 09:23:45,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:23:45,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2024-11-18 09:23:46,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:23:46,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2024-11-18 09:23:46,294 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 09:23:46,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:46,721 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 104 treesize of output 88 [2024-11-18 09:23:46,726 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-18 09:23:46,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 294 treesize of output 174 [2024-11-18 09:23:46,784 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 61 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 09:23:46,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756231806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:46,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:46,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 18] total 48 [2024-11-18 09:23:46,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132869361] [2024-11-18 09:23:46,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:46,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-18 09:23:46,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:46,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-18 09:23:46,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1972, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 09:23:46,786 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 48 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:47,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:47,911 INFO L93 Difference]: Finished difference Result 143 states and 160 transitions. [2024-11-18 09:23:47,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-18 09:23:47,912 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 48 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-18 09:23:47,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:47,913 INFO L225 Difference]: With dead ends: 143 [2024-11-18 09:23:47,913 INFO L226 Difference]: Without dead ends: 141 [2024-11-18 09:23:47,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1549 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=703, Invalid=4997, Unknown=0, NotChecked=0, Total=5700 [2024-11-18 09:23:47,915 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 309 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:47,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 267 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:23:47,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-18 09:23:47,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 58. [2024-11-18 09:23:47,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 57 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2024-11-18 09:23:47,932 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 53 [2024-11-18 09:23:47,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:47,932 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2024-11-18 09:23:47,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 48 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:47,935 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2024-11-18 09:23:47,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 09:23:47,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:47,935 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:47,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 09:23:48,136 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,SelfDestructingSolverStorable9 [2024-11-18 09:23:48,137 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:48,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:48,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1202327990, now seen corresponding path program 6 times [2024-11-18 09:23:48,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:48,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988321105] [2024-11-18 09:23:48,138 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:23:48,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:48,162 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-18 09:23:48,162 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 33 proven. 52 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 09:23:48,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:48,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988321105] [2024-11-18 09:23:48,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988321105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:48,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502884613] [2024-11-18 09:23:48,333 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:23:48,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:48,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:48,335 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) [2024-11-18 09:23:48,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 09:23:48,415 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-18 09:23:48,415 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:48,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 09:23:48,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 50 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 09:23:48,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 50 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 09:23:48,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502884613] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:48,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:48,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-18 09:23:48,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127114810] [2024-11-18 09:23:48,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:48,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 09:23:48,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:48,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 09:23:48,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-18 09:23:48,645 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 23 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:48,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:48,832 INFO L93 Difference]: Finished difference Result 141 states and 160 transitions. [2024-11-18 09:23:48,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 09:23:48,832 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 23 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-18 09:23:48,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:48,833 INFO L225 Difference]: With dead ends: 141 [2024-11-18 09:23:48,833 INFO L226 Difference]: Without dead ends: 74 [2024-11-18 09:23:48,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 95 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-18 09:23:48,834 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 140 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:48,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 122 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:23:48,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-18 09:23:48,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2024-11-18 09:23:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 62 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:48,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2024-11-18 09:23:48,854 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 57 [2024-11-18 09:23:48,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:48,855 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2024-11-18 09:23:48,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 23 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:48,855 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2024-11-18 09:23:48,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-18 09:23:48,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:48,855 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:48,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 09:23:49,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:49,060 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:49,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:49,060 INFO L85 PathProgramCache]: Analyzing trace with hash 72917472, now seen corresponding path program 7 times [2024-11-18 09:23:49,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:49,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277694890] [2024-11-18 09:23:49,061 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:23:49,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:23:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:49,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:49,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277694890] [2024-11-18 09:23:49,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277694890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:49,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098319748] [2024-11-18 09:23:49,567 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:23:49,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:49,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:49,569 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) [2024-11-18 09:23:49,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 09:23:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:23:49,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-18 09:23:49,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:49,766 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 15 treesize of output 1 [2024-11-18 09:23:49,790 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 15 treesize of output 7 [2024-11-18 09:23:49,799 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 15 treesize of output 7 [2024-11-18 09:23:49,808 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 15 treesize of output 7 [2024-11-18 09:23:49,818 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 15 treesize of output 7 [2024-11-18 09:23:49,831 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 15 treesize of output 7 [2024-11-18 09:23:49,877 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 25 treesize of output 13 [2024-11-18 09:23:50,153 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 17 treesize of output 9 [2024-11-18 09:23:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:50,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 09:23:50,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098319748] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:50,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:50,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 48 [2024-11-18 09:23:50,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566132675] [2024-11-18 09:23:50,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:50,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-18 09:23:50,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:50,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-18 09:23:50,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2055, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 09:23:50,767 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 48 states, 48 states have (on average 3.4166666666666665) internal successors, (164), 48 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:51,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:51,621 INFO L93 Difference]: Finished difference Result 115 states and 127 transitions. [2024-11-18 09:23:51,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-18 09:23:51,622 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.4166666666666665) internal successors, (164), 48 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-18 09:23:51,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:51,623 INFO L225 Difference]: With dead ends: 115 [2024-11-18 09:23:51,625 INFO L226 Difference]: Without dead ends: 113 [2024-11-18 09:23:51,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 96 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=357, Invalid=3675, Unknown=0, NotChecked=0, Total=4032 [2024-11-18 09:23:51,627 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 153 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:51,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 323 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 09:23:51,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-18 09:23:51,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 67. [2024-11-18 09:23:51,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.1363636363636365) internal successors, (75), 66 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:51,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2024-11-18 09:23:51,635 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 62 [2024-11-18 09:23:51,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:51,635 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2024-11-18 09:23:51,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.4166666666666665) internal successors, (164), 48 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:51,636 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2024-11-18 09:23:51,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 09:23:51,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:51,636 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:51,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 09:23:51,838 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,SelfDestructingSolverStorable11 [2024-11-18 09:23:51,839 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:51,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:51,839 INFO L85 PathProgramCache]: Analyzing trace with hash 174238998, now seen corresponding path program 8 times [2024-11-18 09:23:51,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:51,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298213888] [2024-11-18 09:23:51,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:23:51,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:51,860 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:23:51,861 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 51 proven. 57 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 09:23:52,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:52,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298213888] [2024-11-18 09:23:52,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298213888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:52,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578542706] [2024-11-18 09:23:52,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:23:52,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:52,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:52,039 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) [2024-11-18 09:23:52,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 09:23:52,129 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:23:52,130 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:52,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 09:23:52,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 72 proven. 36 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 09:23:52,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:52,453 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 72 proven. 36 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 09:23:52,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578542706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:52,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:52,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-18 09:23:52,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428674267] [2024-11-18 09:23:52,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:52,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 09:23:52,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:52,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 09:23:52,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-18 09:23:52,456 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:52,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:52,656 INFO L93 Difference]: Finished difference Result 161 states and 182 transitions. [2024-11-18 09:23:52,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 09:23:52,656 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-18 09:23:52,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:52,657 INFO L225 Difference]: With dead ends: 161 [2024-11-18 09:23:52,657 INFO L226 Difference]: Without dead ends: 83 [2024-11-18 09:23:52,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 110 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-11-18 09:23:52,658 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 184 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:52,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 109 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:23:52,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-18 09:23:52,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 72. [2024-11-18 09:23:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1408450704225352) internal successors, (81), 71 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2024-11-18 09:23:52,666 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 66 [2024-11-18 09:23:52,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:52,666 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2024-11-18 09:23:52,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:52,666 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2024-11-18 09:23:52,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-18 09:23:52,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:52,667 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:52,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 09:23:52,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 09:23:52,867 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:52,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:52,868 INFO L85 PathProgramCache]: Analyzing trace with hash -695424892, now seen corresponding path program 9 times [2024-11-18 09:23:52,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:52,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513470698] [2024-11-18 09:23:52,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:23:52,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:52,911 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-18 09:23:52,911 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 59 proven. 81 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 09:23:53,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:53,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513470698] [2024-11-18 09:23:53,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513470698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:53,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912952412] [2024-11-18 09:23:53,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:23:53,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:53,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:53,470 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:23:53,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 09:23:53,587 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-18 09:23:53,587 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:53,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-18 09:23:53,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:53,713 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 15 treesize of output 1 [2024-11-18 09:23:53,779 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 19 treesize of output 9 [2024-11-18 09:23:53,789 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 19 treesize of output 9 [2024-11-18 09:23:53,798 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 19 treesize of output 9 [2024-11-18 09:23:53,805 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 19 treesize of output 9 [2024-11-18 09:23:53,816 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 19 treesize of output 9 [2024-11-18 09:23:53,823 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 19 treesize of output 9 [2024-11-18 09:23:53,864 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 29 treesize of output 13 [2024-11-18 09:23:54,330 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 15 treesize of output 7 [2024-11-18 09:23:54,352 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 19 proven. 121 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 09:23:54,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:55,158 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 18 treesize of output 16 [2024-11-18 09:23:55,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 20 [2024-11-18 09:23:55,326 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 09:23:55,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912952412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:55,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:55,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 25] total 68 [2024-11-18 09:23:55,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972391426] [2024-11-18 09:23:55,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:55,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-18 09:23:55,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:55,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-18 09:23:55,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=3985, Unknown=0, NotChecked=0, Total=4556 [2024-11-18 09:23:55,329 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 68 states, 68 states have (on average 2.2794117647058822) internal successors, (155), 68 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:00,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:24:00,382 INFO L93 Difference]: Finished difference Result 380 states and 424 transitions. [2024-11-18 09:24:00,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2024-11-18 09:24:00,383 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.2794117647058822) internal successors, (155), 68 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-18 09:24:00,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:24:00,384 INFO L225 Difference]: With dead ends: 380 [2024-11-18 09:24:00,384 INFO L226 Difference]: Without dead ends: 202 [2024-11-18 09:24:00,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 93 SyntacticMatches, 6 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16603 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=4926, Invalid=39806, Unknown=0, NotChecked=0, Total=44732 [2024-11-18 09:24:00,392 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 963 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 3013 mSolverCounterSat, 533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 3546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 3013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:24:00,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 900 Invalid, 3546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 3013 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 09:24:00,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-18 09:24:00,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 87. [2024-11-18 09:24:00,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 86 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:00,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2024-11-18 09:24:00,414 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 71 [2024-11-18 09:24:00,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:24:00,414 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions. [2024-11-18 09:24:00,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.2794117647058822) internal successors, (155), 68 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:00,415 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions. [2024-11-18 09:24:00,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 09:24:00,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:24:00,422 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:24:00,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 09:24:00,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 09:24:00,623 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:24:00,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:24:00,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1514849554, now seen corresponding path program 10 times [2024-11-18 09:24:00,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:24:00,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382384697] [2024-11-18 09:24:00,624 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:24:00,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:24:00,653 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:24:00,654 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-18 09:24:01,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:24:01,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382384697] [2024-11-18 09:24:01,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382384697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:24:01,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701700598] [2024-11-18 09:24:01,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:24:01,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:01,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:24:01,187 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:24:01,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 09:24:01,281 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:24:01,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:01,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-18 09:24:01,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:24:01,326 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 31 treesize of output 15 [2024-11-18 09:24:01,342 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-18 09:24:01,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 26 [2024-11-18 09:24:01,508 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 21 treesize of output 9 [2024-11-18 09:24:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-18 09:24:01,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:24:01,767 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 34 treesize of output 28 [2024-11-18 09:24:01,770 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-18 09:24:01,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 14 [2024-11-18 09:24:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-18 09:24:01,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701700598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:24:01,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:24:01,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 37 [2024-11-18 09:24:01,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012806240] [2024-11-18 09:24:01,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:24:01,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-18 09:24:01,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:24:01,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-18 09:24:01,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1212, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 09:24:01,796 INFO L87 Difference]: Start difference. First operand 87 states and 99 transitions. Second operand has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:02,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:24:02,577 INFO L93 Difference]: Finished difference Result 163 states and 178 transitions. [2024-11-18 09:24:02,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-18 09:24:02,578 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-18 09:24:02,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:24:02,578 INFO L225 Difference]: With dead ends: 163 [2024-11-18 09:24:02,579 INFO L226 Difference]: Without dead ends: 161 [2024-11-18 09:24:02,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=2542, Unknown=0, NotChecked=0, Total=2756 [2024-11-18 09:24:02,579 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 83 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:24:02,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 388 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:24:02,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-18 09:24:02,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 81. [2024-11-18 09:24:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.1375) internal successors, (91), 80 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:02,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2024-11-18 09:24:02,589 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 76 [2024-11-18 09:24:02,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:24:02,590 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2024-11-18 09:24:02,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2024-11-18 09:24:02,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 09:24:02,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:24:02,590 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:24:02,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-18 09:24:02,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 09:24:02,791 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:24:02,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:24:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash 122414920, now seen corresponding path program 11 times [2024-11-18 09:24:02,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:24:02,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613688916] [2024-11-18 09:24:02,792 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:24:02,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:24:02,839 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-18 09:24:02,842 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:24:03,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:24:03,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613688916] [2024-11-18 09:24:03,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613688916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:24:03,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838857597] [2024-11-18 09:24:03,372 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:24:03,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:03,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:24:03,374 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:24:03,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 09:24:03,516 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-18 09:24:03,516 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:03,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-18 09:24:03,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:24:03,766 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 25 treesize of output 13 [2024-11-18 09:24:04,043 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 17 treesize of output 9 [2024-11-18 09:24:04,062 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-18 09:24:04,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:24:04,424 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 34 treesize of output 28 [2024-11-18 09:24:04,427 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-18 09:24:04,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 14 [2024-11-18 09:24:04,447 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-18 09:24:04,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838857597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:24:04,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:24:04,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 21] total 52 [2024-11-18 09:24:04,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339457086] [2024-11-18 09:24:04,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:24:04,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-18 09:24:04,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:24:04,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-18 09:24:04,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2446, Unknown=0, NotChecked=0, Total=2652 [2024-11-18 09:24:04,450 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 52 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:05,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:24:05,617 INFO L93 Difference]: Finished difference Result 143 states and 157 transitions. [2024-11-18 09:24:05,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-18 09:24:05,617 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 52 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-18 09:24:05,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:24:05,619 INFO L225 Difference]: With dead ends: 143 [2024-11-18 09:24:05,619 INFO L226 Difference]: Without dead ends: 141 [2024-11-18 09:24:05,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=379, Invalid=4733, Unknown=0, NotChecked=0, Total=5112 [2024-11-18 09:24:05,621 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 181 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 2221 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 2261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 09:24:05,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 522 Invalid, 2261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2221 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 09:24:05,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-18 09:24:05,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 85. [2024-11-18 09:24:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.130952380952381) internal successors, (95), 84 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:05,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2024-11-18 09:24:05,645 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 80 [2024-11-18 09:24:05,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:24:05,645 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2024-11-18 09:24:05,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 52 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:05,645 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2024-11-18 09:24:05,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-18 09:24:05,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:24:05,645 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:24:05,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-18 09:24:05,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:05,846 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:24:05,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:24:05,847 INFO L85 PathProgramCache]: Analyzing trace with hash 769982078, now seen corresponding path program 12 times [2024-11-18 09:24:05,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:24:05,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272013994] [2024-11-18 09:24:05,847 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:24:05,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:24:05,902 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-18 09:24:05,902 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:06,147 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 99 proven. 93 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-18 09:24:06,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:24:06,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272013994] [2024-11-18 09:24:06,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272013994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:24:06,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084540267] [2024-11-18 09:24:06,148 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:24:06,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:06,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:24:06,150 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:24:06,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 09:24:06,418 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-18 09:24:06,418 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:06,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 09:24:06,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:24:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 128 proven. 64 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-18 09:24:06,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:24:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 128 proven. 64 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-18 09:24:06,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084540267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:24:06,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:24:06,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-18 09:24:06,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933117181] [2024-11-18 09:24:06,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:24:06,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 09:24:06,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:24:06,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 09:24:06,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-18 09:24:06,837 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:07,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:24:07,074 INFO L93 Difference]: Finished difference Result 201 states and 226 transitions. [2024-11-18 09:24:07,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 09:24:07,075 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-11-18 09:24:07,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:24:07,076 INFO L225 Difference]: With dead ends: 201 [2024-11-18 09:24:07,076 INFO L226 Difference]: Without dead ends: 101 [2024-11-18 09:24:07,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 140 SyntacticMatches, 17 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=393, Invalid=1167, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 09:24:07,077 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 291 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:24:07,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 129 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:24:07,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-18 09:24:07,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 90. [2024-11-18 09:24:07,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.1348314606741574) internal successors, (101), 89 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2024-11-18 09:24:07,088 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 84 [2024-11-18 09:24:07,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:24:07,088 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2024-11-18 09:24:07,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2024-11-18 09:24:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-18 09:24:07,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:24:07,089 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:24:07,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-18 09:24:07,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 09:24:07,293 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:24:07,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:24:07,293 INFO L85 PathProgramCache]: Analyzing trace with hash 910882804, now seen corresponding path program 13 times [2024-11-18 09:24:07,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:24:07,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854335135] [2024-11-18 09:24:07,293 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:24:07,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:24:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:24:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:24:08,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:24:08,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854335135] [2024-11-18 09:24:08,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854335135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:24:08,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752266821] [2024-11-18 09:24:08,392 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:24:08,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:08,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:24:08,394 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:24:08,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 09:24:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:24:08,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-18 09:24:08,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:24:08,756 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 15 treesize of output 1 [2024-11-18 09:24:08,787 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 15 treesize of output 7 [2024-11-18 09:24:08,795 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 15 treesize of output 7 [2024-11-18 09:24:08,803 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 15 treesize of output 7 [2024-11-18 09:24:08,810 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 15 treesize of output 7 [2024-11-18 09:24:08,819 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 15 treesize of output 7 [2024-11-18 09:24:08,827 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 15 treesize of output 7 [2024-11-18 09:24:08,834 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 15 treesize of output 7 [2024-11-18 09:24:08,842 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 15 treesize of output 7 [2024-11-18 09:24:08,880 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 25 treesize of output 13 [2024-11-18 09:24:09,311 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 17 treesize of output 9 [2024-11-18 09:24:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:24:09,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:24:10,543 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-18 09:24:10,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752266821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:24:10,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:24:10,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 23] total 73 [2024-11-18 09:24:10,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729737465] [2024-11-18 09:24:10,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:24:10,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-18 09:24:10,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:24:10,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-18 09:24:10,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=4938, Unknown=0, NotChecked=0, Total=5256 [2024-11-18 09:24:10,545 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand has 73 states, 73 states have (on average 3.2739726027397262) internal successors, (239), 73 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:12,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:24:12,321 INFO L93 Difference]: Finished difference Result 157 states and 172 transitions. [2024-11-18 09:24:12,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-18 09:24:12,321 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.2739726027397262) internal successors, (239), 73 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-18 09:24:12,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:24:12,322 INFO L225 Difference]: With dead ends: 157 [2024-11-18 09:24:12,322 INFO L226 Difference]: Without dead ends: 155 [2024-11-18 09:24:12,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 139 SyntacticMatches, 8 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2436 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=536, Invalid=8206, Unknown=0, NotChecked=0, Total=8742 [2024-11-18 09:24:12,323 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 223 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 2995 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 3043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:24:12,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 674 Invalid, 3043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2995 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 09:24:12,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-18 09:24:12,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 94. [2024-11-18 09:24:12,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.1290322580645162) internal successors, (105), 93 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2024-11-18 09:24:12,335 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 89 [2024-11-18 09:24:12,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:24:12,335 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2024-11-18 09:24:12,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.2739726027397262) internal successors, (239), 73 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:12,335 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2024-11-18 09:24:12,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 09:24:12,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:24:12,336 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:24:12,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-18 09:24:12,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 09:24:12,541 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:24:12,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:24:12,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1336682198, now seen corresponding path program 14 times [2024-11-18 09:24:12,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:24:12,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313854325] [2024-11-18 09:24:12,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:24:12,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:24:12,563 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:24:12,563 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:12,886 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 129 proven. 114 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-18 09:24:12,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:24:12,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313854325] [2024-11-18 09:24:12,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313854325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:24:12,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725022077] [2024-11-18 09:24:12,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:24:12,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:12,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:24:12,890 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:24:12,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 09:24:13,013 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:24:13,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:13,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 09:24:13,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:24:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 162 proven. 81 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-18 09:24:13,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:24:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 162 proven. 81 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-18 09:24:13,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725022077] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:24:13,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:24:13,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-18 09:24:13,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147681091] [2024-11-18 09:24:13,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:24:13,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-18 09:24:13,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:24:13,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-18 09:24:13,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 09:24:13,508 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand has 35 states, 35 states have (on average 3.2857142857142856) internal successors, (115), 35 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:13,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:24:13,807 INFO L93 Difference]: Finished difference Result 221 states and 248 transitions. [2024-11-18 09:24:13,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 09:24:13,807 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2857142857142856) internal successors, (115), 35 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-18 09:24:13,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:24:13,808 INFO L225 Difference]: With dead ends: 221 [2024-11-18 09:24:13,808 INFO L226 Difference]: Without dead ends: 110 [2024-11-18 09:24:13,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 155 SyntacticMatches, 19 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=471, Invalid=1421, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 09:24:13,809 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 264 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:24:13,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 171 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:24:13,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-18 09:24:13,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 99. [2024-11-18 09:24:13,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.1326530612244898) internal successors, (111), 98 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2024-11-18 09:24:13,830 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 93 [2024-11-18 09:24:13,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:24:13,830 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2024-11-18 09:24:13,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2857142857142856) internal successors, (115), 35 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:13,831 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2024-11-18 09:24:13,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 09:24:13,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:24:13,834 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:24:13,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-18 09:24:14,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:14,039 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:24:14,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:24:14,039 INFO L85 PathProgramCache]: Analyzing trace with hash -194350928, now seen corresponding path program 15 times [2024-11-18 09:24:14,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:24:14,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717317462] [2024-11-18 09:24:14,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:24:14,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:24:14,156 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-18 09:24:14,159 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 307 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-18 09:24:14,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:24:14,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717317462] [2024-11-18 09:24:14,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717317462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:24:14,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654437763] [2024-11-18 09:24:14,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:24:14,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:14,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:24:14,738 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:24:14,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-18 09:24:15,050 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-18 09:24:15,050 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:15,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-18 09:24:15,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:24:15,315 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 37 treesize of output 17 [2024-11-18 09:24:16,188 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-18 09:24:16,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-18 09:24:16,219 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 153 proven. 154 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-18 09:24:16,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:24:17,224 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 76 treesize of output 64 [2024-11-18 09:24:17,238 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-18 09:24:17,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 36 [2024-11-18 09:24:17,411 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 144 proven. 163 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-18 09:24:17,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654437763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:24:17,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:24:17,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 27] total 65 [2024-11-18 09:24:17,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101485484] [2024-11-18 09:24:17,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:24:17,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-18 09:24:17,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:24:17,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-18 09:24:17,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=3653, Unknown=0, NotChecked=0, Total=4160 [2024-11-18 09:24:17,418 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 65 states, 65 states have (on average 2.9692307692307693) internal successors, (193), 65 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:24,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:24:24,326 INFO L93 Difference]: Finished difference Result 290 states and 320 transitions. [2024-11-18 09:24:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-18 09:24:24,326 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.9692307692307693) internal successors, (193), 65 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-11-18 09:24:24,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:24:24,327 INFO L225 Difference]: With dead ends: 290 [2024-11-18 09:24:24,327 INFO L226 Difference]: Without dead ends: 201 [2024-11-18 09:24:24,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 147 SyntacticMatches, 10 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5954 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2072, Invalid=20578, Unknown=0, NotChecked=0, Total=22650 [2024-11-18 09:24:24,329 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 753 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 2664 mSolverCounterSat, 263 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 2664 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:24:24,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 763 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 2664 Invalid, 6 Unknown, 0 Unchecked, 4.1s Time] [2024-11-18 09:24:24,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-18 09:24:24,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 113. [2024-11-18 09:24:24,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 112 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:24,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2024-11-18 09:24:24,346 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 98 [2024-11-18 09:24:24,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:24:24,346 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2024-11-18 09:24:24,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.9692307692307693) internal successors, (193), 65 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:24,347 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2024-11-18 09:24:24,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 09:24:24,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:24:24,347 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:24:24,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-18 09:24:24,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:24,548 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:24:24,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:24:24,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1161001258, now seen corresponding path program 3 times [2024-11-18 09:24:24,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:24:24,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734739184] [2024-11-18 09:24:24,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:24:24,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:24:24,597 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-18 09:24:24,597 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 112 proven. 181 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-18 09:24:25,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:24:25,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734739184] [2024-11-18 09:24:25,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734739184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:24:25,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430861139] [2024-11-18 09:24:25,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:24:25,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:25,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:24:25,210 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:24:25,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-18 09:24:25,728 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-18 09:24:25,729 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:25,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-18 09:24:25,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:24:26,051 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 31 treesize of output 15 [2024-11-18 09:24:26,631 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 15 treesize of output 7 [2024-11-18 09:24:26,653 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 31 proven. 262 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-18 09:24:26,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:24:27,177 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 40 treesize of output 34 [2024-11-18 09:24:27,182 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-18 09:24:27,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 25 [2024-11-18 09:24:27,339 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 303 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-18 09:24:27,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430861139] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:24:27,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:24:27,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 30] total 72 [2024-11-18 09:24:27,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129983436] [2024-11-18 09:24:27,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:24:27,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-18 09:24:27,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:24:27,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-18 09:24:27,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=927, Invalid=4185, Unknown=0, NotChecked=0, Total=5112 [2024-11-18 09:24:27,342 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand has 72 states, 72 states have (on average 2.6527777777777777) internal successors, (191), 72 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:32,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:24:32,711 INFO L93 Difference]: Finished difference Result 455 states and 504 transitions. [2024-11-18 09:24:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2024-11-18 09:24:32,712 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.6527777777777777) internal successors, (191), 72 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-18 09:24:32,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:24:32,716 INFO L225 Difference]: With dead ends: 455 [2024-11-18 09:24:32,716 INFO L226 Difference]: Without dead ends: 369 [2024-11-18 09:24:32,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 147 SyntacticMatches, 12 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19490 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=6370, Invalid=44932, Unknown=0, NotChecked=0, Total=51302 [2024-11-18 09:24:32,719 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 909 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 2380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:24:32,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 725 Invalid, 2380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 09:24:32,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-11-18 09:24:32,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 158. [2024-11-18 09:24:32,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.197452229299363) internal successors, (188), 157 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:32,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2024-11-18 09:24:32,767 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 101 [2024-11-18 09:24:32,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:24:32,768 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2024-11-18 09:24:32,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.6527777777777777) internal successors, (191), 72 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:32,768 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2024-11-18 09:24:32,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-18 09:24:32,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:24:32,769 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:24:32,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-18 09:24:32,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:32,970 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:24:32,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:24:32,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1474310764, now seen corresponding path program 4 times [2024-11-18 09:24:32,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:24:32,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629922588] [2024-11-18 09:24:32,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:24:32,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:24:32,989 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:24:32,989 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:33,429 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 337 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-18 09:24:33,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:24:33,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629922588] [2024-11-18 09:24:33,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629922588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:24:33,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98465798] [2024-11-18 09:24:33,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:24:33,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:33,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:24:33,431 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:24:33,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-18 09:24:33,559 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:24:33,559 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:33,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-18 09:24:33,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:24:33,590 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 19 treesize of output 1 [2024-11-18 09:24:33,601 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-18 09:24:33,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 24 [2024-11-18 09:24:33,909 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 19 treesize of output 7 [2024-11-18 09:24:33,931 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 336 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-18 09:24:33,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:24:34,173 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 18 treesize of output 16 [2024-11-18 09:24:34,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 14 [2024-11-18 09:24:34,199 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 336 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-18 09:24:34,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98465798] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:24:34,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:24:34,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 35 [2024-11-18 09:24:34,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241063754] [2024-11-18 09:24:34,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:24:34,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-18 09:24:34,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:24:34,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-18 09:24:34,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 09:24:34,200 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand has 35 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 35 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:35,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:24:35,300 INFO L93 Difference]: Finished difference Result 362 states and 396 transitions. [2024-11-18 09:24:35,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-18 09:24:35,301 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 35 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-18 09:24:35,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:24:35,302 INFO L225 Difference]: With dead ends: 362 [2024-11-18 09:24:35,302 INFO L226 Difference]: Without dead ends: 360 [2024-11-18 09:24:35,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 184 SyntacticMatches, 13 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=1922, Unknown=0, NotChecked=0, Total=2070 [2024-11-18 09:24:35,303 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 71 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 2552 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 2583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 09:24:35,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 608 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2552 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 09:24:35,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-18 09:24:35,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 163. [2024-11-18 09:24:35,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.2037037037037037) internal successors, (195), 162 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:35,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 195 transitions. [2024-11-18 09:24:35,335 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 195 transitions. Word has length 103 [2024-11-18 09:24:35,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:24:35,335 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 195 transitions. [2024-11-18 09:24:35,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 35 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:35,335 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 195 transitions. [2024-11-18 09:24:35,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-18 09:24:35,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:24:35,336 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:24:35,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-18 09:24:35,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-18 09:24:35,537 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:24:35,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:24:35,537 INFO L85 PathProgramCache]: Analyzing trace with hash -500163536, now seen corresponding path program 5 times [2024-11-18 09:24:35,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:24:35,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874395635] [2024-11-18 09:24:35,538 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:24:35,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:24:35,584 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:24:35,585 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 210 proven. 121 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-18 09:24:35,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:24:35,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874395635] [2024-11-18 09:24:35,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874395635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:24:35,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263670648] [2024-11-18 09:24:35,951 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:24:35,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:35,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:24:35,953 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:24:35,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-18 09:24:36,241 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:24:36,241 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:36,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-18 09:24:36,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:24:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 210 proven. 121 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-18 09:24:36,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:24:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 210 proven. 121 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-18 09:24:36,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263670648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:24:36,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:24:36,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 39 [2024-11-18 09:24:36,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212503760] [2024-11-18 09:24:36,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:24:36,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-18 09:24:36,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:24:36,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-18 09:24:36,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 09:24:36,777 INFO L87 Difference]: Start difference. First operand 163 states and 195 transitions. Second operand has 39 states, 39 states have (on average 2.769230769230769) internal successors, (108), 39 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:37,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:24:37,243 INFO L93 Difference]: Finished difference Result 426 states and 487 transitions. [2024-11-18 09:24:37,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-18 09:24:37,243 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.769230769230769) internal successors, (108), 39 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-18 09:24:37,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:24:37,244 INFO L225 Difference]: With dead ends: 426 [2024-11-18 09:24:37,244 INFO L226 Difference]: Without dead ends: 273 [2024-11-18 09:24:37,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 176 SyntacticMatches, 24 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=633, Invalid=1917, Unknown=0, NotChecked=0, Total=2550 [2024-11-18 09:24:37,245 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 419 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:24:37,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 223 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:24:37,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-18 09:24:37,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 208. [2024-11-18 09:24:37,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.1642512077294687) internal successors, (241), 207 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:37,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 241 transitions. [2024-11-18 09:24:37,293 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 241 transitions. Word has length 106 [2024-11-18 09:24:37,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:24:37,293 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 241 transitions. [2024-11-18 09:24:37,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.769230769230769) internal successors, (108), 39 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 241 transitions. [2024-11-18 09:24:37,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-18 09:24:37,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:24:37,294 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:24:37,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-18 09:24:37,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-18 09:24:37,495 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:24:37,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:24:37,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1409534820, now seen corresponding path program 16 times [2024-11-18 09:24:37,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:24:37,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072815083] [2024-11-18 09:24:37,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:24:37,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:24:37,524 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:24:37,525 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:38,044 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-18 09:24:38,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:24:38,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072815083] [2024-11-18 09:24:38,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072815083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:24:38,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247149556] [2024-11-18 09:24:38,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:24:38,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:38,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:24:38,047 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:24:38,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-18 09:24:38,186 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:24:38,186 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:38,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-18 09:24:38,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:24:38,258 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 31 treesize of output 15 [2024-11-18 09:24:38,611 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 21 treesize of output 9 [2024-11-18 09:24:38,637 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-18 09:24:38,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:24:39,099 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 34 treesize of output 28 [2024-11-18 09:24:39,102 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-18 09:24:39,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 14 [2024-11-18 09:24:39,128 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-18 09:24:39,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247149556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:24:39,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:24:39,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 53 [2024-11-18 09:24:39,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435103522] [2024-11-18 09:24:39,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:24:39,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-18 09:24:39,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:24:39,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-18 09:24:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2580, Unknown=0, NotChecked=0, Total=2756 [2024-11-18 09:24:39,130 INFO L87 Difference]: Start difference. First operand 208 states and 241 transitions. Second operand has 53 states, 53 states have (on average 3.3773584905660377) internal successors, (179), 53 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:40,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:24:40,730 INFO L93 Difference]: Finished difference Result 377 states and 414 transitions. [2024-11-18 09:24:40,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-18 09:24:40,731 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.3773584905660377) internal successors, (179), 53 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-18 09:24:40,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:24:40,732 INFO L225 Difference]: With dead ends: 377 [2024-11-18 09:24:40,732 INFO L226 Difference]: Without dead ends: 240 [2024-11-18 09:24:40,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=310, Invalid=5542, Unknown=0, NotChecked=0, Total=5852 [2024-11-18 09:24:40,735 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 141 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 3542 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 3583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:24:40,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 857 Invalid, 3583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3542 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 09:24:40,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-18 09:24:40,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 169. [2024-11-18 09:24:40,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.125) internal successors, (189), 168 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:40,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 189 transitions. [2024-11-18 09:24:40,775 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 189 transitions. Word has length 107 [2024-11-18 09:24:40,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:24:40,775 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 189 transitions. [2024-11-18 09:24:40,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.3773584905660377) internal successors, (179), 53 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:40,775 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 189 transitions. [2024-11-18 09:24:40,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-18 09:24:40,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:24:40,776 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:24:40,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-18 09:24:40,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:40,977 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:24:40,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:24:40,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1137779666, now seen corresponding path program 6 times [2024-11-18 09:24:40,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:24:40,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707201112] [2024-11-18 09:24:40,977 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:24:40,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:24:41,040 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-18 09:24:41,041 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:42,678 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 23 proven. 372 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-18 09:24:42,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:24:42,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707201112] [2024-11-18 09:24:42,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707201112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:24:42,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299080414] [2024-11-18 09:24:42,679 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:24:42,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:42,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:24:42,680 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:24:42,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-18 09:24:43,079 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-18 09:24:43,079 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:43,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-18 09:24:43,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:24:43,473 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 25 treesize of output 13 [2024-11-18 09:24:43,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:24:43,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-18 09:24:43,603 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 25 treesize of output 13 [2024-11-18 09:24:44,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:24:44,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2024-11-18 09:24:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 372 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-18 09:24:44,322 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:24:45,152 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 77 treesize of output 67 [2024-11-18 09:24:45,156 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-18 09:24:45,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 238 treesize of output 174 [2024-11-18 09:24:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 4 proven. 368 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-18 09:24:45,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299080414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:24:45,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:24:45,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 29, 28] total 85 [2024-11-18 09:24:45,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714829672] [2024-11-18 09:24:45,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:24:45,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-18 09:24:45,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:24:45,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-18 09:24:45,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=6688, Unknown=0, NotChecked=0, Total=7140 [2024-11-18 09:24:45,618 INFO L87 Difference]: Start difference. First operand 169 states and 189 transitions. Second operand has 85 states, 85 states have (on average 2.8941176470588235) internal successors, (246), 85 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:51,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:24:51,451 INFO L93 Difference]: Finished difference Result 304 states and 329 transitions. [2024-11-18 09:24:51,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-11-18 09:24:51,451 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.8941176470588235) internal successors, (246), 85 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-11-18 09:24:51,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:24:51,453 INFO L225 Difference]: With dead ends: 304 [2024-11-18 09:24:51,453 INFO L226 Difference]: Without dead ends: 302 [2024-11-18 09:24:51,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11322 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2920, Invalid=36482, Unknown=0, NotChecked=0, Total=39402 [2024-11-18 09:24:51,455 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 679 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 5503 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 5766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 5503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:24:51,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 1837 Invalid, 5766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 5503 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 09:24:51,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-18 09:24:51,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 131. [2024-11-18 09:24:51,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.146153846153846) internal successors, (149), 130 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:51,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 149 transitions. [2024-11-18 09:24:51,487 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 149 transitions. Word has length 108 [2024-11-18 09:24:51,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:24:51,487 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 149 transitions. [2024-11-18 09:24:51,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.8941176470588235) internal successors, (246), 85 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:51,488 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 149 transitions. [2024-11-18 09:24:51,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-18 09:24:51,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:24:51,488 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:24:51,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-18 09:24:51,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:51,689 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:24:51,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:24:51,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1109917208, now seen corresponding path program 17 times [2024-11-18 09:24:51,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:24:51,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109649866] [2024-11-18 09:24:51,689 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:24:51,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:24:51,744 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:24:51,744 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-18 09:24:52,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:24:52,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109649866] [2024-11-18 09:24:52,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109649866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:24:52,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381959360] [2024-11-18 09:24:52,433 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:24:52,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:52,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:24:52,434 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:24:52,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-18 09:24:52,730 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:24:52,730 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:52,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-18 09:24:52,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:24:53,057 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 15 treesize of output 1 [2024-11-18 09:24:53,089 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 15 treesize of output 7 [2024-11-18 09:24:53,095 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 15 treesize of output 7 [2024-11-18 09:24:53,104 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 15 treesize of output 7 [2024-11-18 09:24:53,112 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 15 treesize of output 7 [2024-11-18 09:24:53,122 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 15 treesize of output 7 [2024-11-18 09:24:53,138 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 15 treesize of output 7 [2024-11-18 09:24:53,148 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 15 treesize of output 7 [2024-11-18 09:24:53,163 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 15 treesize of output 7 [2024-11-18 09:24:53,176 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 15 treesize of output 7 [2024-11-18 09:24:53,186 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 15 treesize of output 7 [2024-11-18 09:24:53,193 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 15 treesize of output 7 [2024-11-18 09:24:53,236 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 25 treesize of output 13 [2024-11-18 09:24:53,848 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 17 treesize of output 9 [2024-11-18 09:24:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:24:53,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:24:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-18 09:24:55,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381959360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:24:55,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:24:55,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 29] total 84 [2024-11-18 09:24:55,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60797256] [2024-11-18 09:24:55,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:24:55,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-18 09:24:55,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:24:55,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-18 09:24:55,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=6619, Unknown=0, NotChecked=0, Total=6972 [2024-11-18 09:24:55,635 INFO L87 Difference]: Start difference. First operand 131 states and 149 transitions. Second operand has 84 states, 84 states have (on average 3.4404761904761907) internal successors, (289), 84 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:58,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:24:58,660 INFO L93 Difference]: Finished difference Result 257 states and 279 transitions. [2024-11-18 09:24:58,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-18 09:24:58,660 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.4404761904761907) internal successors, (289), 84 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2024-11-18 09:24:58,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:24:58,661 INFO L225 Difference]: With dead ends: 257 [2024-11-18 09:24:58,661 INFO L226 Difference]: Without dead ends: 255 [2024-11-18 09:24:58,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 166 SyntacticMatches, 12 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=617, Invalid=11815, Unknown=0, NotChecked=0, Total=12432 [2024-11-18 09:24:58,662 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 220 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 5939 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 5985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 5939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:24:58,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1337 Invalid, 5985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 5939 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 09:24:58,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-18 09:24:58,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 121. [2024-11-18 09:24:58,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.125) internal successors, (135), 120 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:58,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 135 transitions. [2024-11-18 09:24:58,696 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 135 transitions. Word has length 116 [2024-11-18 09:24:58,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:24:58,696 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 135 transitions. [2024-11-18 09:24:58,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.4404761904761907) internal successors, (289), 84 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:24:58,697 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 135 transitions. [2024-11-18 09:24:58,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-18 09:24:58,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:24:58,697 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:24:58,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-18 09:24:58,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-18 09:24:58,902 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:24:58,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:24:58,902 INFO L85 PathProgramCache]: Analyzing trace with hash -600232626, now seen corresponding path program 18 times [2024-11-18 09:24:58,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:24:58,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602539430] [2024-11-18 09:24:58,902 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:24:58,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:24:58,963 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-18 09:24:58,965 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 243 proven. 255 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-18 09:24:59,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:24:59,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602539430] [2024-11-18 09:24:59,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602539430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:24:59,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536830546] [2024-11-18 09:24:59,359 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:24:59,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:24:59,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:24:59,361 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:24:59,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-18 09:24:59,967 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-18 09:24:59,967 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:24:59,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-18 09:24:59,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:25:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 288 proven. 210 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-18 09:25:00,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:25:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 288 proven. 210 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-18 09:25:00,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536830546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:25:00,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:25:00,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-11-18 09:25:00,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75432859] [2024-11-18 09:25:00,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:25:00,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-18 09:25:00,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:25:00,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-18 09:25:00,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 09:25:00,623 INFO L87 Difference]: Start difference. First operand 121 states and 135 transitions. Second operand has 44 states, 44 states have (on average 3.5681818181818183) internal successors, (157), 44 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:25:01,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:25:01,010 INFO L93 Difference]: Finished difference Result 281 states and 314 transitions. [2024-11-18 09:25:01,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-18 09:25:01,011 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.5681818181818183) internal successors, (157), 44 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2024-11-18 09:25:01,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:25:01,011 INFO L225 Difference]: With dead ends: 281 [2024-11-18 09:25:01,011 INFO L226 Difference]: Without dead ends: 137 [2024-11-18 09:25:01,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 200 SyntacticMatches, 25 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=747, Invalid=2333, Unknown=0, NotChecked=0, Total=3080 [2024-11-18 09:25:01,012 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 591 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:25:01,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 166 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:25:01,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-18 09:25:01,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 126. [2024-11-18 09:25:01,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.128) internal successors, (141), 125 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:25:01,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 141 transitions. [2024-11-18 09:25:01,045 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 141 transitions. Word has length 120 [2024-11-18 09:25:01,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:25:01,045 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 141 transitions. [2024-11-18 09:25:01,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.5681818181818183) internal successors, (157), 44 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:25:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 141 transitions. [2024-11-18 09:25:01,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 09:25:01,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:25:01,045 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:25:01,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-18 09:25:01,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-18 09:25:01,246 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:25:01,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:25:01,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1989894868, now seen corresponding path program 19 times [2024-11-18 09:25:01,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:25:01,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222481099] [2024-11-18 09:25:01,247 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:25:01,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:25:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:25:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 121 proven. 583 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:25:02,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:25:02,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222481099] [2024-11-18 09:25:02,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222481099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:25:02,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127110805] [2024-11-18 09:25:02,546 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:25:02,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:25:02,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:25:02,547 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:25:02,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-18 09:25:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:25:02,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-18 09:25:02,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:25:03,019 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 15 treesize of output 1 [2024-11-18 09:25:03,034 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 15 treesize of output 7 [2024-11-18 09:25:03,042 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 15 treesize of output 7 [2024-11-18 09:25:03,048 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 15 treesize of output 7 [2024-11-18 09:25:03,057 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 15 treesize of output 7 [2024-11-18 09:25:03,065 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 15 treesize of output 7 [2024-11-18 09:25:03,073 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 15 treesize of output 7 [2024-11-18 09:25:03,079 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 15 treesize of output 7 [2024-11-18 09:25:03,088 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 15 treesize of output 7 [2024-11-18 09:25:03,095 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 15 treesize of output 7 [2024-11-18 09:25:03,105 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 15 treesize of output 7 [2024-11-18 09:25:03,112 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 15 treesize of output 7 [2024-11-18 09:25:03,120 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 15 treesize of output 7 [2024-11-18 09:25:03,157 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 25 treesize of output 13