./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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-cav19/array_init_var_plus_ind.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 c51b17720ce1dad8733576d816f307564aabdff8c7a86cf8d9848ed8571cafd2 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 10:10:30,370 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 10:10:30,457 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 10:10:30,462 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 10:10:30,464 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 10:10:30,496 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 10:10:30,497 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 10:10:30,497 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 10:10:30,498 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 10:10:30,500 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 10:10:30,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 10:10:30,501 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 10:10:30,502 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 10:10:30,502 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 10:10:30,502 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 10:10:30,503 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 10:10:30,503 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 10:10:30,503 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 10:10:30,503 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 10:10:30,504 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 10:10:30,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 10:10:30,509 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 10:10:30,509 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 10:10:30,509 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 10:10:30,510 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 10:10:30,510 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 10:10:30,510 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 10:10:30,510 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 10:10:30,511 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 10:10:30,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 10:10:30,511 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 10:10:30,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 10:10:30,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:10:30,512 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 10:10:30,513 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 10:10:30,525 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 10:10:30,525 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 10:10:30,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 10:10:30,525 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 10:10:30,525 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 10:10:30,526 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 10:10:30,526 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 10:10:30,526 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c51b17720ce1dad8733576d816f307564aabdff8c7a86cf8d9848ed8571cafd2 [2024-11-08 10:10:30,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 10:10:30,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 10:10:30,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 10:10:30,843 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 10:10:30,844 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 10:10:30,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c [2024-11-08 10:10:32,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 10:10:32,456 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 10:10:32,457 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c [2024-11-08 10:10:32,467 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68cd1bbee/72c41a88c9824338bfcd93244236c7a5/FLAG7b471bcf4 [2024-11-08 10:10:32,484 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68cd1bbee/72c41a88c9824338bfcd93244236c7a5 [2024-11-08 10:10:32,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 10:10:32,489 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 10:10:32,492 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 10:10:32,493 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 10:10:32,498 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 10:10:32,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:10:32" (1/1) ... [2024-11-08 10:10:32,500 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3728264a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:10:32, skipping insertion in model container [2024-11-08 10:10:32,500 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:10:32" (1/1) ... [2024-11-08 10:10:32,521 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 10:10:32,708 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-cav19/array_init_var_plus_ind.c[414,427] [2024-11-08 10:10:32,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:10:32,739 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 10:10:32,751 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-cav19/array_init_var_plus_ind.c[414,427] [2024-11-08 10:10:32,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:10:32,778 INFO L204 MainTranslator]: Completed translation [2024-11-08 10:10:32,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:10:32 WrapperNode [2024-11-08 10:10:32,779 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 10:10:32,780 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 10:10:32,780 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 10:10:32,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 10:10:32,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:10:32" (1/1) ... [2024-11-08 10:10:32,795 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:10:32" (1/1) ... [2024-11-08 10:10:32,811 INFO L138 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2024-11-08 10:10:32,813 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 10:10:32,814 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 10:10:32,814 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 10:10:32,814 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 10:10:32,824 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:10:32" (1/1) ... [2024-11-08 10:10:32,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:10:32" (1/1) ... [2024-11-08 10:10:32,826 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:10:32" (1/1) ... [2024-11-08 10:10:32,844 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 10:10:32,844 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:10:32" (1/1) ... [2024-11-08 10:10:32,844 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:10:32" (1/1) ... [2024-11-08 10:10:32,850 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:10:32" (1/1) ... [2024-11-08 10:10:32,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:10:32" (1/1) ... [2024-11-08 10:10:32,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:10:32" (1/1) ... [2024-11-08 10:10:32,859 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:10:32" (1/1) ... [2024-11-08 10:10:32,860 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 10:10:32,865 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 10:10:32,865 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 10:10:32,865 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 10:10:32,866 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:10:32" (1/1) ... [2024-11-08 10:10:32,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:10:32,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:10:32,898 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) [2024-11-08 10:10:32,902 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 [2024-11-08 10:10:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 10:10:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 10:10:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 10:10:32,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 10:10:32,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 10:10:32,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 10:10:32,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 10:10:32,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 10:10:32,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 10:10:32,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 10:10:32,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 10:10:33,010 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 10:10:33,012 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 10:10:33,146 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-08 10:10:33,147 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 10:10:33,160 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 10:10:33,160 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 10:10:33,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:10:33 BoogieIcfgContainer [2024-11-08 10:10:33,161 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 10:10:33,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 10:10:33,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 10:10:33,166 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 10:10:33,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 10:10:32" (1/3) ... [2024-11-08 10:10:33,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5bafde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:10:33, skipping insertion in model container [2024-11-08 10:10:33,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:10:32" (2/3) ... [2024-11-08 10:10:33,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5bafde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:10:33, skipping insertion in model container [2024-11-08 10:10:33,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:10:33" (3/3) ... [2024-11-08 10:10:33,168 INFO L112 eAbstractionObserver]: Analyzing ICFG array_init_var_plus_ind.c [2024-11-08 10:10:33,184 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 10:10:33,186 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 10:10:33,258 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 10:10:33,266 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;@7dee84eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 10:10:33,267 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 10:10:33,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 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) [2024-11-08 10:10:33,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 10:10:33,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:33,281 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:33,281 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:33,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:33,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1818270042, now seen corresponding path program 1 times [2024-11-08 10:10:33,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:33,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099931141] [2024-11-08 10:10:33,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:33,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:33,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:10:33,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099931141] [2024-11-08 10:10:33,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099931141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:10:33,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:10:33,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:10:33,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978280634] [2024-11-08 10:10:33,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:10:33,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 10:10:33,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:10:33,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 10:10:33,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 10:10:33,468 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:33,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:10:33,479 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2024-11-08 10:10:33,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 10:10:33,481 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2024-11-08 10:10:33,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:10:33,487 INFO L225 Difference]: With dead ends: 27 [2024-11-08 10:10:33,487 INFO L226 Difference]: Without dead ends: 12 [2024-11-08 10:10:33,489 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 [2024-11-08 10:10:33,492 INFO L432 NwaCegarLoop]: 18 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, 18 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 [2024-11-08 10:10:33,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:10:33,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-08 10:10:33,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-08 10:10:33,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:33,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-11-08 10:10:33,518 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 7 [2024-11-08 10:10:33,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:10:33,518 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-11-08 10:10:33,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:33,519 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-11-08 10:10:33,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 10:10:33,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:33,520 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:33,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 10:10:33,523 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:33,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:33,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1808111311, now seen corresponding path program 1 times [2024-11-08 10:10:33,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:33,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872841017] [2024-11-08 10:10:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:33,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:33,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:33,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:10:33,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872841017] [2024-11-08 10:10:33,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872841017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:10:33,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:10:33,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:10:33,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274305833] [2024-11-08 10:10:33,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:10:33,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:10:33,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:10:33,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:10:33,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:10:33,657 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:33,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:10:33,703 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2024-11-08 10:10:33,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:10:33,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2024-11-08 10:10:33,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:10:33,705 INFO L225 Difference]: With dead ends: 29 [2024-11-08 10:10:33,706 INFO L226 Difference]: Without dead ends: 22 [2024-11-08 10:10:33,706 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 [2024-11-08 10:10:33,709 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:10:33,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 15 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:10:33,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-08 10:10:33,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 13. [2024-11-08 10:10:33,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:33,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2024-11-08 10:10:33,716 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2024-11-08 10:10:33,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:10:33,716 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2024-11-08 10:10:33,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:33,717 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2024-11-08 10:10:33,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 10:10:33,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:33,718 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:33,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 10:10:33,718 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:33,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:33,719 INFO L85 PathProgramCache]: Analyzing trace with hash 266504688, now seen corresponding path program 1 times [2024-11-08 10:10:33,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:33,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282556747] [2024-11-08 10:10:33,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:33,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:33,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:33,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:10:33,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282556747] [2024-11-08 10:10:33,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282556747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:10:33,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:10:33,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:10:33,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662855028] [2024-11-08 10:10:33,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:10:33,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:10:33,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:10:33,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:10:33,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:10:33,819 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:33,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:10:33,855 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2024-11-08 10:10:33,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:10:33,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-11-08 10:10:33,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:10:33,857 INFO L225 Difference]: With dead ends: 23 [2024-11-08 10:10:33,857 INFO L226 Difference]: Without dead ends: 15 [2024-11-08 10:10:33,857 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 [2024-11-08 10:10:33,858 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:10:33,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 25 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:10:33,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-08 10:10:33,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2024-11-08 10:10:33,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:33,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2024-11-08 10:10:33,867 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2024-11-08 10:10:33,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:10:33,867 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-08 10:10:33,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:33,872 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-11-08 10:10:33,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 10:10:33,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:33,872 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:33,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 10:10:33,872 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:33,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:33,873 INFO L85 PathProgramCache]: Analyzing trace with hash 53732745, now seen corresponding path program 1 times [2024-11-08 10:10:33,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:33,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501911992] [2024-11-08 10:10:33,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:33,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:34,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:10:34,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501911992] [2024-11-08 10:10:34,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501911992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:10:34,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90028362] [2024-11-08 10:10:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:34,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:34,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:10:34,033 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) [2024-11-08 10:10:34,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 10:10:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:34,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 10:10:34,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:10:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:34,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:10:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:34,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90028362] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:10:34,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:10:34,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-11-08 10:10:34,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664609082] [2024-11-08 10:10:34,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:10:34,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 10:10:34,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:10:34,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 10:10:34,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-08 10:10:34,297 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:34,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:10:34,414 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2024-11-08 10:10:34,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 10:10:34,416 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 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 10 [2024-11-08 10:10:34,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:10:34,417 INFO L225 Difference]: With dead ends: 45 [2024-11-08 10:10:34,417 INFO L226 Difference]: Without dead ends: 36 [2024-11-08 10:10:34,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2024-11-08 10:10:34,419 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 98 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:10:34,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 52 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:10:34,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-08 10:10:34,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 22. [2024-11-08 10:10:34,430 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) [2024-11-08 10:10:34,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-08 10:10:34,431 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 10 [2024-11-08 10:10:34,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:10:34,432 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-08 10:10:34,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:34,432 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-08 10:10:34,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 10:10:34,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:34,434 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:34,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 10:10:34,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:34,638 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:34,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:34,639 INFO L85 PathProgramCache]: Analyzing trace with hash -334334928, now seen corresponding path program 1 times [2024-11-08 10:10:34,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:34,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750123385] [2024-11-08 10:10:34,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:34,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:34,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:10:34,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750123385] [2024-11-08 10:10:34,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750123385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:10:34,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775859770] [2024-11-08 10:10:34,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:34,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:34,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:10:34,999 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) [2024-11-08 10:10:35,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 10:10:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:35,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 10:10:35,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:10:35,187 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 [2024-11-08 10:10:35,267 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 [2024-11-08 10:10:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:35,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:10:35,338 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 [2024-11-08 10:10:35,344 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 [2024-11-08 10:10:35,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:35,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775859770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:10:35,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:10:35,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2024-11-08 10:10:35,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674020198] [2024-11-08 10:10:35,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:10:35,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 10:10:35,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:10:35,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 10:10:35,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-08 10:10:35,394 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:35,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:10:35,513 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2024-11-08 10:10:35,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 10:10:35,515 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 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 14 [2024-11-08 10:10:35,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:10:35,516 INFO L225 Difference]: With dead ends: 35 [2024-11-08 10:10:35,516 INFO L226 Difference]: Without dead ends: 33 [2024-11-08 10:10:35,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-08 10:10:35,517 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:10:35,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 75 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:10:35,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-08 10:10:35,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2024-11-08 10:10:35,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:35,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-08 10:10:35,531 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2024-11-08 10:10:35,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:10:35,532 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-08 10:10:35,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:35,533 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-08 10:10:35,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 10:10:35,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:35,533 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:35,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 10:10:35,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:35,734 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:35,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:35,735 INFO L85 PathProgramCache]: Analyzing trace with hash -768933834, now seen corresponding path program 2 times [2024-11-08 10:10:35,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:35,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608081635] [2024-11-08 10:10:35,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:35,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:36,153 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:36,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:10:36,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608081635] [2024-11-08 10:10:36,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608081635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:10:36,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795900684] [2024-11-08 10:10:36,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:10:36,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:36,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:10:36,157 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) [2024-11-08 10:10:36,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 10:10:36,211 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:10:36,212 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:10:36,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 10:10:36,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:10:36,299 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 [2024-11-08 10:10:36,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:36,364 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 27 treesize of output 11 [2024-11-08 10:10:36,445 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 [2024-11-08 10:10:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:36,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:10:36,650 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 25 treesize of output 23 [2024-11-08 10:10:36,657 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 118 treesize of output 110 [2024-11-08 10:10:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:36,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795900684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:10:36,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:10:36,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-08 10:10:36,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275753108] [2024-11-08 10:10:36,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:10:36,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 10:10:36,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:10:36,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 10:10:36,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2024-11-08 10:10:36,747 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:36,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:10:36,945 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2024-11-08 10:10:36,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 10:10:36,945 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 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 [2024-11-08 10:10:36,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:10:36,946 INFO L225 Difference]: With dead ends: 31 [2024-11-08 10:10:36,947 INFO L226 Difference]: Without dead ends: 29 [2024-11-08 10:10:36,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2024-11-08 10:10:36,949 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:10:36,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 63 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:10:36,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-08 10:10:36,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2024-11-08 10:10:36,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:36,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-08 10:10:36,958 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 17 [2024-11-08 10:10:36,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:10:36,958 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-08 10:10:36,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:36,959 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-08 10:10:36,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 10:10:36,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:36,961 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:36,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 10:10:37,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:37,166 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:37,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:37,167 INFO L85 PathProgramCache]: Analyzing trace with hash 20881638, now seen corresponding path program 1 times [2024-11-08 10:10:37,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:37,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788638024] [2024-11-08 10:10:37,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:37,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:37,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:10:37,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788638024] [2024-11-08 10:10:37,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788638024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:10:37,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624325140] [2024-11-08 10:10:37,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:37,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:37,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:10:37,265 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) [2024-11-08 10:10:37,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 10:10:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:37,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 10:10:37,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:10:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:37,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:10:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:37,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624325140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:10:37,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:10:37,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-08 10:10:37,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114131555] [2024-11-08 10:10:37,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:10:37,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 10:10:37,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:10:37,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 10:10:37,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-08 10:10:37,427 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:37,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:10:37,462 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-11-08 10:10:37,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 10:10:37,463 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 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 18 [2024-11-08 10:10:37,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:10:37,463 INFO L225 Difference]: With dead ends: 36 [2024-11-08 10:10:37,463 INFO L226 Difference]: Without dead ends: 24 [2024-11-08 10:10:37,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-08 10:10:37,464 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:10:37,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:10:37,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-08 10:10:37,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-08 10:10:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:37,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2024-11-08 10:10:37,469 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 18 [2024-11-08 10:10:37,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:10:37,469 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2024-11-08 10:10:37,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:37,469 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2024-11-08 10:10:37,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 10:10:37,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:37,470 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:37,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 10:10:37,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:37,671 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:37,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:37,672 INFO L85 PathProgramCache]: Analyzing trace with hash -796542484, now seen corresponding path program 2 times [2024-11-08 10:10:37,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:37,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174800096] [2024-11-08 10:10:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:37,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:37,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:10:37,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174800096] [2024-11-08 10:10:37,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174800096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:10:37,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56369563] [2024-11-08 10:10:37,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:10:37,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:37,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:10:37,964 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) [2024-11-08 10:10:37,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 10:10:38,019 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:10:38,019 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:10:38,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 10:10:38,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:10:38,088 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 23 treesize of output 1 [2024-11-08 10:10:38,272 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 10:10:38,273 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 23 treesize of output 10 [2024-11-08 10:10:38,291 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:38,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:10:38,490 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 20 treesize of output 18 [2024-11-08 10:10:38,494 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 26 treesize of output 20 [2024-11-08 10:10:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:38,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56369563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:10:38,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:10:38,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-08 10:10:38,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676030331] [2024-11-08 10:10:38,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:10:38,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 10:10:38,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:10:38,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 10:10:38,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2024-11-08 10:10:38,698 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:38,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:10:38,927 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2024-11-08 10:10:38,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 10:10:38,928 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2024-11-08 10:10:38,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:10:38,929 INFO L225 Difference]: With dead ends: 37 [2024-11-08 10:10:38,929 INFO L226 Difference]: Without dead ends: 26 [2024-11-08 10:10:38,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=646, Unknown=0, NotChecked=0, Total=812 [2024-11-08 10:10:38,930 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:10:38,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 86 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:10:38,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-08 10:10:38,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-08 10:10:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:38,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-11-08 10:10:38,934 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2024-11-08 10:10:38,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:10:38,935 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-11-08 10:10:38,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:38,935 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-11-08 10:10:38,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 10:10:38,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:38,936 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:38,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 10:10:39,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:39,137 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:39,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:39,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1605494661, now seen corresponding path program 1 times [2024-11-08 10:10:39,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:39,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559627607] [2024-11-08 10:10:39,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:39,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:39,225 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 10:10:39,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:10:39,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559627607] [2024-11-08 10:10:39,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559627607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:10:39,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871111707] [2024-11-08 10:10:39,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:39,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:39,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:10:39,228 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) [2024-11-08 10:10:39,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 10:10:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:39,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 10:10:39,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:10:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 10:10:39,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:10:39,452 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 10:10:39,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871111707] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:10:39,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:10:39,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-08 10:10:39,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577932036] [2024-11-08 10:10:39,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:10:39,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 10:10:39,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:10:39,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 10:10:39,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-08 10:10:39,454 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 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) [2024-11-08 10:10:39,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:10:39,591 INFO L93 Difference]: Finished difference Result 105 states and 118 transitions. [2024-11-08 10:10:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 10:10:39,591 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 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) Word has length 23 [2024-11-08 10:10:39,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:10:39,592 INFO L225 Difference]: With dead ends: 105 [2024-11-08 10:10:39,592 INFO L226 Difference]: Without dead ends: 96 [2024-11-08 10:10:39,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-08 10:10:39,593 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 149 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:10:39,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 63 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:10:39,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-08 10:10:39,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 42. [2024-11-08 10:10:39,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:39,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2024-11-08 10:10:39,602 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 23 [2024-11-08 10:10:39,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:10:39,603 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2024-11-08 10:10:39,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 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) [2024-11-08 10:10:39,603 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2024-11-08 10:10:39,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-08 10:10:39,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:39,603 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:39,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 10:10:39,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:39,804 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:39,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:39,805 INFO L85 PathProgramCache]: Analyzing trace with hash -213992666, now seen corresponding path program 3 times [2024-11-08 10:10:39,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:39,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540846921] [2024-11-08 10:10:39,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:39,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:40,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:10:40,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540846921] [2024-11-08 10:10:40,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540846921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:10:40,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169150284] [2024-11-08 10:10:40,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:10:40,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:40,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:10:40,151 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) [2024-11-08 10:10:40,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 10:10:40,212 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-08 10:10:40,212 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:10:40,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 10:10:40,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:10:40,324 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 [2024-11-08 10:10:40,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:40,389 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 27 treesize of output 11 [2024-11-08 10:10:40,509 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 [2024-11-08 10:10:40,531 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:40,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:10:40,980 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 25 treesize of output 23 [2024-11-08 10:10:40,984 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 54 treesize of output 50 [2024-11-08 10:10:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:41,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169150284] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:10:41,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:10:41,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-11-08 10:10:41,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415825611] [2024-11-08 10:10:41,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:10:41,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 10:10:41,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:10:41,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 10:10:41,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2024-11-08 10:10:41,129 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:41,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:10:41,452 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2024-11-08 10:10:41,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 10:10:41,452 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 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 24 [2024-11-08 10:10:41,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:10:41,454 INFO L225 Difference]: With dead ends: 50 [2024-11-08 10:10:41,454 INFO L226 Difference]: Without dead ends: 48 [2024-11-08 10:10:41,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=185, Invalid=1375, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 10:10:41,455 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 88 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:10:41,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 88 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:10:41,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-08 10:10:41,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2024-11-08 10:10:41,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:41,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2024-11-08 10:10:41,462 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 24 [2024-11-08 10:10:41,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:10:41,462 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2024-11-08 10:10:41,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:41,463 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2024-11-08 10:10:41,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-08 10:10:41,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:41,464 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:41,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 10:10:41,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:41,668 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:41,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:41,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2053274844, now seen corresponding path program 4 times [2024-11-08 10:10:41,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:41,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188480748] [2024-11-08 10:10:41,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:41,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:42,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:10:42,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188480748] [2024-11-08 10:10:42,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188480748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:10:42,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789536044] [2024-11-08 10:10:42,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:10:42,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:42,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:10:42,047 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) [2024-11-08 10:10:42,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 10:10:42,115 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:10:42,115 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:10:42,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 10:10:42,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:10:42,251 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 23 treesize of output 1 [2024-11-08 10:10:42,499 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 10:10:42,500 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 23 treesize of output 10 [2024-11-08 10:10:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:42,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:10:42,792 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 20 treesize of output 18 [2024-11-08 10:10:42,796 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 26 treesize of output 20 [2024-11-08 10:10:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:43,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789536044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:10:43,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:10:43,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 38 [2024-11-08 10:10:43,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304756214] [2024-11-08 10:10:43,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:10:43,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 10:10:43,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:10:43,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 10:10:43,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 10:10:43,071 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:44,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:10:44,049 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2024-11-08 10:10:44,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 10:10:44,050 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 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 28 [2024-11-08 10:10:44,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:10:44,052 INFO L225 Difference]: With dead ends: 61 [2024-11-08 10:10:44,053 INFO L226 Difference]: Without dead ends: 46 [2024-11-08 10:10:44,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=273, Invalid=1367, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 10:10:44,054 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 10:10:44,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 138 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 341 Invalid, 2 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 10:10:44,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-08 10:10:44,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-08 10:10:44,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:44,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2024-11-08 10:10:44,065 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 28 [2024-11-08 10:10:44,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:10:44,068 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2024-11-08 10:10:44,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:44,068 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2024-11-08 10:10:44,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-08 10:10:44,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:44,069 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:44,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 10:10:44,270 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,SelfDestructingSolverStorable10 [2024-11-08 10:10:44,270 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:44,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:44,271 INFO L85 PathProgramCache]: Analyzing trace with hash -272988574, now seen corresponding path program 5 times [2024-11-08 10:10:44,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:44,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468872663] [2024-11-08 10:10:44,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:44,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:44,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:10:44,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468872663] [2024-11-08 10:10:44,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468872663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:10:44,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62723972] [2024-11-08 10:10:44,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:10:44,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:44,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:10:44,687 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) [2024-11-08 10:10:44,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 10:10:44,755 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-08 10:10:44,755 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:10:44,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 10:10:44,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:10:44,832 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 [2024-11-08 10:10:44,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:44,865 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 27 treesize of output 11 [2024-11-08 10:10:44,927 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 [2024-11-08 10:10:44,944 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:44,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:10:45,120 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 25 treesize of output 23 [2024-11-08 10:10:45,124 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 54 treesize of output 50 [2024-11-08 10:10:45,263 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:45,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62723972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:10:45,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:10:45,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 30 [2024-11-08 10:10:45,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388246664] [2024-11-08 10:10:45,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:10:45,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 10:10:45,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:10:45,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 10:10:45,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2024-11-08 10:10:45,266 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:45,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:10:45,528 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2024-11-08 10:10:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 10:10:45,529 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 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 31 [2024-11-08 10:10:45,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:10:45,529 INFO L225 Difference]: With dead ends: 54 [2024-11-08 10:10:45,529 INFO L226 Difference]: Without dead ends: 52 [2024-11-08 10:10:45,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 10:10:45,530 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 66 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:10:45,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 151 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:10:45,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-08 10:10:45,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-11-08 10:10:45,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:45,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2024-11-08 10:10:45,538 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 31 [2024-11-08 10:10:45,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:10:45,540 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2024-11-08 10:10:45,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:45,541 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2024-11-08 10:10:45,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 10:10:45,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:45,542 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:45,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 10:10:45,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:45,747 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:45,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:45,747 INFO L85 PathProgramCache]: Analyzing trace with hash -246527464, now seen corresponding path program 6 times [2024-11-08 10:10:45,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:45,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977004458] [2024-11-08 10:10:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:45,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 4 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:46,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:10:46,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977004458] [2024-11-08 10:10:46,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977004458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:10:46,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984735114] [2024-11-08 10:10:46,152 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:10:46,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:46,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:10:46,153 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) [2024-11-08 10:10:46,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 10:10:46,215 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-08 10:10:46,215 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:10:46,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 10:10:46,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:10:46,354 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 23 treesize of output 1 [2024-11-08 10:10:46,629 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 10:10:46,629 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 23 treesize of output 10 [2024-11-08 10:10:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 15 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:46,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:10:46,988 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 20 treesize of output 18 [2024-11-08 10:10:46,991 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 26 treesize of output 20 [2024-11-08 10:10:47,308 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:47,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984735114] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:10:47,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:10:47,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 44 [2024-11-08 10:10:47,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839789422] [2024-11-08 10:10:47,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:10:47,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-08 10:10:47,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:10:47,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-08 10:10:47,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=1564, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 10:10:47,311 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 44 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:48,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:10:48,653 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2024-11-08 10:10:48,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 10:10:48,654 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 44 states have internal predecessors, (98), 0 states have call successors, (0), 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 [2024-11-08 10:10:48,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:10:48,654 INFO L225 Difference]: With dead ends: 69 [2024-11-08 10:10:48,654 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 10:10:48,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=362, Invalid=1800, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 10:10:48,656 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 10:10:48,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 96 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 310 Invalid, 3 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 10:10:48,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 10:10:48,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-08 10:10:48,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 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) [2024-11-08 10:10:48,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2024-11-08 10:10:48,663 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 35 [2024-11-08 10:10:48,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:10:48,664 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2024-11-08 10:10:48,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 44 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:48,664 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2024-11-08 10:10:48,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 10:10:48,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:48,665 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:48,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 10:10:48,865 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,SelfDestructingSolverStorable12 [2024-11-08 10:10:48,866 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:48,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:48,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1821925934, now seen corresponding path program 7 times [2024-11-08 10:10:48,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:48,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387812012] [2024-11-08 10:10:48,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:48,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:49,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:10:49,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387812012] [2024-11-08 10:10:49,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387812012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:10:49,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136528864] [2024-11-08 10:10:49,274 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 10:10:49,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:49,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:10:49,276 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) [2024-11-08 10:10:49,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 10:10:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:49,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-08 10:10:49,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:10:49,573 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 [2024-11-08 10:10:49,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:49,637 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 27 treesize of output 11 [2024-11-08 10:10:49,800 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 [2024-11-08 10:10:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:49,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:10:50,035 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 25 treesize of output 23 [2024-11-08 10:10:50,039 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 54 treesize of output 50 [2024-11-08 10:10:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:50,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136528864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:10:50,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:10:50,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 50 [2024-11-08 10:10:50,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020961028] [2024-11-08 10:10:50,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:10:50,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-08 10:10:50,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:10:50,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-08 10:10:50,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2254, Unknown=0, NotChecked=0, Total=2450 [2024-11-08 10:10:50,278 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 50 states, 50 states have (on average 2.18) internal successors, (109), 50 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) [2024-11-08 10:10:50,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:10:50,685 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2024-11-08 10:10:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 10:10:50,686 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.18) internal successors, (109), 50 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 38 [2024-11-08 10:10:50,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:10:50,686 INFO L225 Difference]: With dead ends: 58 [2024-11-08 10:10:50,686 INFO L226 Difference]: Without dead ends: 56 [2024-11-08 10:10:50,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=276, Invalid=2916, Unknown=0, NotChecked=0, Total=3192 [2024-11-08 10:10:50,687 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 53 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 10:10:50,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 277 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 10:10:50,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-08 10:10:50,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2024-11-08 10:10:50,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 53 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:50,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2024-11-08 10:10:50,694 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 38 [2024-11-08 10:10:50,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:10:50,695 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2024-11-08 10:10:50,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.18) internal successors, (109), 50 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) [2024-11-08 10:10:50,695 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2024-11-08 10:10:50,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 10:10:50,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:50,696 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:50,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 10:10:50,900 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,SelfDestructingSolverStorable13 [2024-11-08 10:10:50,901 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:50,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:50,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1086466440, now seen corresponding path program 8 times [2024-11-08 10:10:50,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:50,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321073969] [2024-11-08 10:10:50,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:50,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:51,420 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:51,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:10:51,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321073969] [2024-11-08 10:10:51,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321073969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:10:51,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860178906] [2024-11-08 10:10:51,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:10:51,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:51,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:10:51,423 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) [2024-11-08 10:10:51,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 10:10:51,496 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:10:51,497 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:10:51,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-08 10:10:51,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:10:51,724 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 23 treesize of output 1 [2024-11-08 10:10:52,096 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 10:10:52,097 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 23 treesize of output 10 [2024-11-08 10:10:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 28 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:52,123 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:10:52,464 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 20 treesize of output 18 [2024-11-08 10:10:52,466 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 26 treesize of output 20 [2024-11-08 10:10:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:52,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860178906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:10:52,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:10:52,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 53 [2024-11-08 10:10:52,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883232714] [2024-11-08 10:10:52,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:10:52,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-08 10:10:52,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:10:52,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-08 10:10:52,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=2306, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 10:10:52,874 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 53 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:54,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:10:54,168 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2024-11-08 10:10:54,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 10:10:54,169 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 53 states have internal predecessors, (119), 0 states have call successors, (0), 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 42 [2024-11-08 10:10:54,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:10:54,169 INFO L225 Difference]: With dead ends: 77 [2024-11-08 10:10:54,169 INFO L226 Difference]: Without dead ends: 54 [2024-11-08 10:10:54,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=487, Invalid=2593, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 10:10:54,171 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:10:54,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 217 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 518 Invalid, 3 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 10:10:54,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-08 10:10:54,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-08 10:10:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2024-11-08 10:10:54,178 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 42 [2024-11-08 10:10:54,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:10:54,178 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2024-11-08 10:10:54,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 53 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:54,178 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2024-11-08 10:10:54,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 10:10:54,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:54,179 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:54,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 10:10:54,383 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,SelfDestructingSolverStorable14 [2024-11-08 10:10:54,384 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:54,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:54,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1001394318, now seen corresponding path program 9 times [2024-11-08 10:10:54,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:54,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154014401] [2024-11-08 10:10:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:54,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:54,896 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:54,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:10:54,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154014401] [2024-11-08 10:10:54,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154014401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:10:54,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050734499] [2024-11-08 10:10:54,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:10:54,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:54,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:10:54,898 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) [2024-11-08 10:10:54,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 10:10:54,987 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-08 10:10:54,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:10:54,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-08 10:10:54,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:10:55,038 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 [2024-11-08 10:10:55,069 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-08 10:10:55,070 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 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-08 10:10:55,226 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 [2024-11-08 10:10:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:55,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:10:55,835 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_116| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_116| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_296 Int)) (< 0 (+ 1 (select (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_116| 4)) v_ArrVal_296) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 20))))))) is different from false [2024-11-08 10:10:55,842 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 25 treesize of output 23 [2024-11-08 10:10:55,844 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 54 treesize of output 50 [2024-11-08 10:10:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-08 10:10:56,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050734499] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:10:56,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:10:56,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 48 [2024-11-08 10:10:56,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72128005] [2024-11-08 10:10:56,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:10:56,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-08 10:10:56,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:10:56,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-08 10:10:56,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2000, Unknown=1, NotChecked=90, Total=2256 [2024-11-08 10:10:56,119 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 48 states, 48 states have (on average 2.25) internal successors, (108), 48 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) [2024-11-08 10:10:56,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:10:56,609 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2024-11-08 10:10:56,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 10:10:56,610 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.25) internal successors, (108), 48 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 45 [2024-11-08 10:10:56,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:10:56,610 INFO L225 Difference]: With dead ends: 62 [2024-11-08 10:10:56,610 INFO L226 Difference]: Without dead ends: 60 [2024-11-08 10:10:56,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=248, Invalid=2725, Unknown=1, NotChecked=106, Total=3080 [2024-11-08 10:10:56,612 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 61 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 10:10:56,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 300 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 917 Invalid, 0 Unknown, 50 Unchecked, 0.3s Time] [2024-11-08 10:10:56,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-08 10:10:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2024-11-08 10:10:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.087719298245614) internal successors, (62), 57 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:56,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2024-11-08 10:10:56,622 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 45 [2024-11-08 10:10:56,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:10:56,622 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2024-11-08 10:10:56,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.25) internal successors, (108), 48 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) [2024-11-08 10:10:56,622 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2024-11-08 10:10:56,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 10:10:56,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:56,623 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:56,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 10:10:56,824 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,SelfDestructingSolverStorable15 [2024-11-08 10:10:56,824 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:56,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:56,824 INFO L85 PathProgramCache]: Analyzing trace with hash -707076540, now seen corresponding path program 10 times [2024-11-08 10:10:56,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:56,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616692167] [2024-11-08 10:10:56,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:56,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:10:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:57,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:10:57,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616692167] [2024-11-08 10:10:57,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616692167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:10:57,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283131690] [2024-11-08 10:10:57,386 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:10:57,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:57,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:10:57,389 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) [2024-11-08 10:10:57,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 10:10:57,521 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:10:57,521 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:10:57,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 10:10:57,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:10:57,588 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 23 treesize of output 1 [2024-11-08 10:10:58,043 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 10:10:58,043 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 23 treesize of output 10 [2024-11-08 10:10:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 45 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:58,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:10:58,562 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 20 treesize of output 18 [2024-11-08 10:10:58,566 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 26 treesize of output 20 [2024-11-08 10:10:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 40 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:10:59,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283131690] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:10:59,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:10:59,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 54 [2024-11-08 10:10:59,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658618645] [2024-11-08 10:10:59,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:10:59,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-08 10:10:59,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:10:59,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-08 10:10:59,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=2467, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 10:10:59,053 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 54 states, 54 states have (on average 2.3518518518518516) internal successors, (127), 54 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:59,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:10:59,679 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2024-11-08 10:10:59,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 10:10:59,679 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.3518518518518516) internal successors, (127), 54 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 10:10:59,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:10:59,680 INFO L225 Difference]: With dead ends: 86 [2024-11-08 10:10:59,680 INFO L226 Difference]: Without dead ends: 58 [2024-11-08 10:10:59,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=539, Invalid=3493, Unknown=0, NotChecked=0, Total=4032 [2024-11-08 10:10:59,682 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 10:10:59,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 327 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 10:10:59,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-08 10:10:59,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-08 10:10:59,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 57 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) [2024-11-08 10:10:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2024-11-08 10:10:59,689 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 49 [2024-11-08 10:10:59,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:10:59,690 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2024-11-08 10:10:59,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.3518518518518516) internal successors, (127), 54 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:10:59,690 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2024-11-08 10:10:59,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-08 10:10:59,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:10:59,691 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-08 10:10:59,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 10:10:59,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:10:59,892 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:10:59,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:10:59,892 INFO L85 PathProgramCache]: Analyzing trace with hash -988666754, now seen corresponding path program 11 times [2024-11-08 10:10:59,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:10:59,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819613285] [2024-11-08 10:10:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:10:59,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:10:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:11:00,505 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:00,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:11:00,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819613285] [2024-11-08 10:11:00,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819613285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:11:00,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760654321] [2024-11-08 10:11:00,506 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:11:00,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:00,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:11:00,507 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) [2024-11-08 10:11:00,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 10:11:00,601 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-08 10:11:00,601 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:11:00,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-08 10:11:00,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:11:00,926 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 [2024-11-08 10:11:00,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:11:00,989 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 27 treesize of output 11 [2024-11-08 10:11:01,254 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 [2024-11-08 10:11:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:01,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:11:01,651 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 25 treesize of output 23 [2024-11-08 10:11:01,654 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 54 treesize of output 50 [2024-11-08 10:11:02,078 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:02,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760654321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:11:02,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:11:02,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 68 [2024-11-08 10:11:02,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065892026] [2024-11-08 10:11:02,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:11:02,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-08 10:11:02,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:11:02,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-08 10:11:02,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=4284, Unknown=0, NotChecked=0, Total=4556 [2024-11-08 10:11:02,081 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 68 states, 68 states have (on average 2.2205882352941178) internal successors, (151), 68 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:02,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:11:02,792 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2024-11-08 10:11:02,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 10:11:02,792 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.2205882352941178) internal successors, (151), 68 states have internal predecessors, (151), 0 states have call successors, (0), 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 52 [2024-11-08 10:11:02,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:11:02,793 INFO L225 Difference]: With dead ends: 66 [2024-11-08 10:11:02,793 INFO L226 Difference]: Without dead ends: 64 [2024-11-08 10:11:02,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1705 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=376, Invalid=5476, Unknown=0, NotChecked=0, Total=5852 [2024-11-08 10:11:02,795 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 151 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 10:11:02,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 418 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 10:11:02,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-08 10:11:02,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2024-11-08 10:11:02,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 61 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) [2024-11-08 10:11:02,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2024-11-08 10:11:02,802 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 52 [2024-11-08 10:11:02,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:11:02,803 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2024-11-08 10:11:02,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.2205882352941178) internal successors, (151), 68 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:02,803 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2024-11-08 10:11:02,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 10:11:02,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:11:02,804 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-08 10:11:02,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 10:11:03,004 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,SelfDestructingSolverStorable17 [2024-11-08 10:11:03,004 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:11:03,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:11:03,005 INFO L85 PathProgramCache]: Analyzing trace with hash -147752396, now seen corresponding path program 12 times [2024-11-08 10:11:03,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:11:03,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556377420] [2024-11-08 10:11:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:11:03,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:11:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:11:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 40 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:03,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:11:03,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556377420] [2024-11-08 10:11:03,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556377420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:11:03,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852147107] [2024-11-08 10:11:03,684 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:11:03,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:03,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:11:03,685 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) [2024-11-08 10:11:03,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 10:11:03,802 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-08 10:11:03,802 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:11:03,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-08 10:11:03,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:11:04,114 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 23 treesize of output 1 [2024-11-08 10:11:04,611 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 10:11:04,611 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 23 treesize of output 10 [2024-11-08 10:11:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 66 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:04,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:11:05,197 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 20 treesize of output 18 [2024-11-08 10:11:05,201 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 26 treesize of output 20 [2024-11-08 10:11:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 60 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:05,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852147107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:11:05,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:11:05,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 71 [2024-11-08 10:11:05,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703019476] [2024-11-08 10:11:05,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:11:05,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-08 10:11:05,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:11:05,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-08 10:11:05,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=748, Invalid=4222, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 10:11:05,881 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 71 states, 71 states have (on average 2.267605633802817) internal successors, (161), 71 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:06,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:11:06,260 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2024-11-08 10:11:06,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 10:11:06,261 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.267605633802817) internal successors, (161), 71 states have internal predecessors, (161), 0 states have call successors, (0), 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 56 [2024-11-08 10:11:06,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:11:06,262 INFO L225 Difference]: With dead ends: 93 [2024-11-08 10:11:06,262 INFO L226 Difference]: Without dead ends: 62 [2024-11-08 10:11:06,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1654 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=791, Invalid=4611, Unknown=0, NotChecked=0, Total=5402 [2024-11-08 10:11:06,263 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 10:11:06,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 196 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 10:11:06,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-08 10:11:06,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-08 10:11:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:06,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2024-11-08 10:11:06,269 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 56 [2024-11-08 10:11:06,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:11:06,269 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2024-11-08 10:11:06,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.267605633802817) internal successors, (161), 71 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:06,269 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2024-11-08 10:11:06,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 10:11:06,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:11:06,270 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-08 10:11:06,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-08 10:11:06,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:06,470 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:11:06,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:11:06,471 INFO L85 PathProgramCache]: Analyzing trace with hash -412901702, now seen corresponding path program 13 times [2024-11-08 10:11:06,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:11:06,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773822609] [2024-11-08 10:11:06,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:11:06,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:11:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:11:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:07,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:11:07,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773822609] [2024-11-08 10:11:07,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773822609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:11:07,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391167667] [2024-11-08 10:11:07,140 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 10:11:07,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:07,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:11:07,141 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) [2024-11-08 10:11:07,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 10:11:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:11:07,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-08 10:11:07,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:11:07,649 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 [2024-11-08 10:11:07,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:11:07,712 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 27 treesize of output 11 [2024-11-08 10:11:08,056 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 [2024-11-08 10:11:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:08,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:11:08,936 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 25 treesize of output 23 [2024-11-08 10:11:08,941 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 118 treesize of output 110 [2024-11-08 10:11:09,497 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:09,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391167667] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:11:09,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:11:09,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 77 [2024-11-08 10:11:09,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707097867] [2024-11-08 10:11:09,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:11:09,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-08 10:11:09,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:11:09,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-08 10:11:09,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=5542, Unknown=0, NotChecked=0, Total=5852 [2024-11-08 10:11:09,500 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 77 states, 77 states have (on average 2.2337662337662336) internal successors, (172), 77 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:10,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:11:10,242 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2024-11-08 10:11:10,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 10:11:10,243 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.2337662337662336) internal successors, (172), 77 states have internal predecessors, (172), 0 states have call successors, (0), 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 59 [2024-11-08 10:11:10,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:11:10,243 INFO L225 Difference]: With dead ends: 70 [2024-11-08 10:11:10,244 INFO L226 Difference]: Without dead ends: 68 [2024-11-08 10:11:10,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2161 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=426, Invalid=7056, Unknown=0, NotChecked=0, Total=7482 [2024-11-08 10:11:10,245 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 80 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 10:11:10,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 594 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 10:11:10,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-08 10:11:10,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-11-08 10:11:10,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:10,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2024-11-08 10:11:10,253 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 59 [2024-11-08 10:11:10,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:11:10,253 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2024-11-08 10:11:10,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.2337662337662336) internal successors, (172), 77 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:10,254 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2024-11-08 10:11:10,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 10:11:10,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:11:10,254 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-08 10:11:10,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-08 10:11:10,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:10,455 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:11:10,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:11:10,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1132689008, now seen corresponding path program 14 times [2024-11-08 10:11:10,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:11:10,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239783412] [2024-11-08 10:11:10,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:11:10,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:11:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:11:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:11,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:11:11,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239783412] [2024-11-08 10:11:11,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239783412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:11:11,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208915462] [2024-11-08 10:11:11,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:11:11,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:11,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:11:11,139 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) [2024-11-08 10:11:11,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 10:11:11,226 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:11:11,226 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:11:11,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-08 10:11:11,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:11:11,286 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 [2024-11-08 10:11:11,519 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 [2024-11-08 10:11:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:11,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:11:11,818 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 [2024-11-08 10:11:11,821 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 [2024-11-08 10:11:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:12,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208915462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:11:12,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:11:12,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28, 28] total 63 [2024-11-08 10:11:12,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788204806] [2024-11-08 10:11:12,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:11:12,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-08 10:11:12,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:11:12,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-08 10:11:12,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=3695, Unknown=0, NotChecked=0, Total=3906 [2024-11-08 10:11:12,410 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 63 states, 63 states have (on average 2.4603174603174605) internal successors, (155), 63 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) [2024-11-08 10:11:13,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:11:13,046 INFO L93 Difference]: Finished difference Result 108 states and 111 transitions. [2024-11-08 10:11:13,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 10:11:13,046 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.4603174603174605) internal successors, (155), 63 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 63 [2024-11-08 10:11:13,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:11:13,047 INFO L225 Difference]: With dead ends: 108 [2024-11-08 10:11:13,047 INFO L226 Difference]: Without dead ends: 106 [2024-11-08 10:11:13,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=227, Invalid=3933, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 10:11:13,048 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 10:11:13,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 729 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 10:11:13,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-08 10:11:13,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 72. [2024-11-08 10:11:13,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.056338028169014) internal successors, (75), 71 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) [2024-11-08 10:11:13,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2024-11-08 10:11:13,058 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 63 [2024-11-08 10:11:13,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:11:13,058 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2024-11-08 10:11:13,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.4603174603174605) internal successors, (155), 63 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) [2024-11-08 10:11:13,059 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2024-11-08 10:11:13,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 10:11:13,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:11:13,059 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-08 10:11:13,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-08 10:11:13,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:13,260 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:11:13,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:11:13,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1692837623, now seen corresponding path program 2 times [2024-11-08 10:11:13,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:11:13,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765780408] [2024-11-08 10:11:13,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:11:13,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:11:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:11:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-08 10:11:13,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:11:13,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765780408] [2024-11-08 10:11:13,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765780408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:11:13,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795262594] [2024-11-08 10:11:13,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:11:13,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:13,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:11:13,433 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) [2024-11-08 10:11:13,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 10:11:13,540 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:11:13,540 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:11:13,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 10:11:13,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:11:13,711 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-08 10:11:13,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:11:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-08 10:11:13,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795262594] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:11:13,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:11:13,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-11-08 10:11:13,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233656952] [2024-11-08 10:11:13,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:11:13,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-08 10:11:13,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:11:13,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-08 10:11:13,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 10:11:13,891 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 36 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) [2024-11-08 10:11:14,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:11:14,172 INFO L93 Difference]: Finished difference Result 568 states and 594 transitions. [2024-11-08 10:11:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 10:11:14,173 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 36 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 65 [2024-11-08 10:11:14,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:11:14,175 INFO L225 Difference]: With dead ends: 568 [2024-11-08 10:11:14,175 INFO L226 Difference]: Without dead ends: 535 [2024-11-08 10:11:14,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 10:11:14,177 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 385 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:11:14,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 127 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:11:14,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-08 10:11:14,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 107. [2024-11-08 10:11:14,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.1415094339622642) internal successors, (121), 106 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:14,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2024-11-08 10:11:14,193 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 65 [2024-11-08 10:11:14,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:11:14,193 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2024-11-08 10:11:14,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 36 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) [2024-11-08 10:11:14,193 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2024-11-08 10:11:14,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 10:11:14,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:11:14,194 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-08 10:11:14,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-08 10:11:14,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:14,395 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:11:14,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:11:14,395 INFO L85 PathProgramCache]: Analyzing trace with hash 557731626, now seen corresponding path program 15 times [2024-11-08 10:11:14,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:11:14,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384289410] [2024-11-08 10:11:14,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:11:14,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:11:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:11:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:15,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:11:15,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384289410] [2024-11-08 10:11:15,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384289410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:11:15,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394610252] [2024-11-08 10:11:15,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:11:15,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:15,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:11:15,196 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) [2024-11-08 10:11:15,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 10:11:15,373 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-08 10:11:15,373 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:11:15,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-08 10:11:15,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:11:15,438 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 [2024-11-08 10:11:15,479 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-08 10:11:15,479 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 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-08 10:11:15,752 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 [2024-11-08 10:11:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:15,775 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:11:17,305 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 25 treesize of output 23 [2024-11-08 10:11:17,308 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 54 treesize of output 50 [2024-11-08 10:11:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:17,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394610252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:11:17,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:11:17,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 69 [2024-11-08 10:11:17,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528949484] [2024-11-08 10:11:17,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:11:17,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-08 10:11:17,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:11:17,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-08 10:11:17,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=4446, Unknown=3, NotChecked=0, Total=4692 [2024-11-08 10:11:17,872 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand has 69 states, 69 states have (on average 2.347826086956522) internal successors, (162), 69 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:18,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:11:18,758 INFO L93 Difference]: Finished difference Result 141 states and 155 transitions. [2024-11-08 10:11:18,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-08 10:11:18,759 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.347826086956522) internal successors, (162), 69 states have internal predecessors, (162), 0 states have call successors, (0), 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 [2024-11-08 10:11:18,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:11:18,760 INFO L225 Difference]: With dead ends: 141 [2024-11-08 10:11:18,760 INFO L226 Difference]: Without dead ends: 139 [2024-11-08 10:11:18,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1524 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=367, Invalid=5950, Unknown=3, NotChecked=0, Total=6320 [2024-11-08 10:11:18,760 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 96 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1723 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 10:11:18,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 598 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1723 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 10:11:18,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-08 10:11:18,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 106. [2024-11-08 10:11:18,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.1428571428571428) internal successors, (120), 105 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:18,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2024-11-08 10:11:18,774 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 66 [2024-11-08 10:11:18,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:11:18,774 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2024-11-08 10:11:18,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.347826086956522) internal successors, (162), 69 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:18,775 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2024-11-08 10:11:18,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 10:11:18,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:11:18,775 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2024-11-08 10:11:18,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-08 10:11:18,975 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,SelfDestructingSolverStorable22 [2024-11-08 10:11:18,976 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:11:18,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:11:18,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1474593574, now seen corresponding path program 16 times [2024-11-08 10:11:18,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:11:18,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368314022] [2024-11-08 10:11:18,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:11:18,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:11:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:11:19,230 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 99 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:19,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:11:19,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368314022] [2024-11-08 10:11:19,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368314022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:11:19,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549056348] [2024-11-08 10:11:19,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:11:19,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:19,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:11:19,233 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) [2024-11-08 10:11:19,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 10:11:19,414 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:11:19,414 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:11:19,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 10:11:19,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:11:19,638 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 128 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:19,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:11:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 128 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:19,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549056348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:11:19,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:11:19,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-08 10:11:19,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494333621] [2024-11-08 10:11:19,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:11:19,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 10:11:19,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:11:19,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 10:11:19,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-08 10:11:19,799 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand has 32 states, 32 states have (on average 3.4375) internal successors, (110), 32 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:19,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:11:19,902 INFO L93 Difference]: Finished difference Result 146 states and 160 transitions. [2024-11-08 10:11:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 10:11:19,903 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.4375) internal successors, (110), 32 states have internal predecessors, (110), 0 states have call successors, (0), 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 67 [2024-11-08 10:11:19,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:11:19,903 INFO L225 Difference]: With dead ends: 146 [2024-11-08 10:11:19,903 INFO L226 Difference]: Without dead ends: 106 [2024-11-08 10:11:19,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 106 SyntacticMatches, 17 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-08 10:11:19,904 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:11:19,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 190 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:11:19,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-08 10:11:19,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-08 10:11:19,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.1333333333333333) internal successors, (119), 105 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:19,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2024-11-08 10:11:19,919 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 67 [2024-11-08 10:11:19,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:11:19,919 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2024-11-08 10:11:19,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.4375) internal successors, (110), 32 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:19,919 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2024-11-08 10:11:19,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 10:11:19,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:11:19,920 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2024-11-08 10:11:19,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-08 10:11:20,120 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,SelfDestructingSolverStorable23 [2024-11-08 10:11:20,120 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:11:20,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:11:20,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1229951264, now seen corresponding path program 17 times [2024-11-08 10:11:20,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:11:20,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61793188] [2024-11-08 10:11:20,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:11:20,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:11:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:11:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 283 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:20,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:11:20,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61793188] [2024-11-08 10:11:20,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61793188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:11:20,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123223071] [2024-11-08 10:11:20,908 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:11:20,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:20,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:11:20,909 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) [2024-11-08 10:11:20,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 10:11:21,078 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-08 10:11:21,078 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:11:21,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-08 10:11:21,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:11:21,636 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 [2024-11-08 10:11:22,091 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 [2024-11-08 10:11:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 283 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:22,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:11:22,548 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 [2024-11-08 10:11:22,550 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 [2024-11-08 10:11:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 283 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:23,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123223071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:11:23,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:11:23,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 31, 31] total 90 [2024-11-08 10:11:23,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098289518] [2024-11-08 10:11:23,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:11:23,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-11-08 10:11:23,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:11:23,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-11-08 10:11:23,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=7651, Unknown=0, NotChecked=0, Total=8010 [2024-11-08 10:11:23,301 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 90 states, 90 states have (on average 2.2777777777777777) internal successors, (205), 90 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:24,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:11:24,153 INFO L93 Difference]: Finished difference Result 151 states and 164 transitions. [2024-11-08 10:11:24,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 10:11:24,154 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.2777777777777777) internal successors, (205), 90 states have internal predecessors, (205), 0 states have call successors, (0), 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 70 [2024-11-08 10:11:24,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:11:24,154 INFO L225 Difference]: With dead ends: 151 [2024-11-08 10:11:24,154 INFO L226 Difference]: Without dead ends: 149 [2024-11-08 10:11:24,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2595 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=384, Invalid=8172, Unknown=0, NotChecked=0, Total=8556 [2024-11-08 10:11:24,156 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 20 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 10:11:24,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1085 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 10:11:24,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-08 10:11:24,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 111. [2024-11-08 10:11:24,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 110 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) [2024-11-08 10:11:24,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2024-11-08 10:11:24,173 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 70 [2024-11-08 10:11:24,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:11:24,173 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2024-11-08 10:11:24,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.2777777777777777) internal successors, (205), 90 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:24,174 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2024-11-08 10:11:24,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 10:11:24,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:11:24,174 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2024-11-08 10:11:24,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-08 10:11:24,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:24,375 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:11:24,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:11:24,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1261252838, now seen corresponding path program 18 times [2024-11-08 10:11:24,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:11:24,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517053097] [2024-11-08 10:11:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:11:24,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:11:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:11:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:25,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:11:25,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517053097] [2024-11-08 10:11:25,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517053097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:11:25,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096759236] [2024-11-08 10:11:25,313 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:11:25,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:25,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:11:25,315 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) [2024-11-08 10:11:25,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 10:11:25,697 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-08 10:11:25,697 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:11:25,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-08 10:11:25,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:11:26,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:11:26,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:11:26,342 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 27 treesize of output 11 [2024-11-08 10:11:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:26,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:11:27,432 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 25 treesize of output 23 [2024-11-08 10:11:27,434 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 118 treesize of output 110 [2024-11-08 10:11:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:28,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096759236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:11:28,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:11:28,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 95 [2024-11-08 10:11:28,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497039865] [2024-11-08 10:11:28,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:11:28,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-11-08 10:11:28,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:11:28,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-11-08 10:11:28,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=8551, Unknown=0, NotChecked=0, Total=8930 [2024-11-08 10:11:28,216 INFO L87 Difference]: Start difference. First operand 111 states and 124 transitions. Second operand has 95 states, 95 states have (on average 2.2526315789473683) internal successors, (214), 95 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:29,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:11:29,373 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2024-11-08 10:11:29,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 10:11:29,374 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.2526315789473683) internal successors, (214), 95 states have internal predecessors, (214), 0 states have call successors, (0), 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 73 [2024-11-08 10:11:29,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:11:29,375 INFO L225 Difference]: With dead ends: 149 [2024-11-08 10:11:29,375 INFO L226 Difference]: Without dead ends: 147 [2024-11-08 10:11:29,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3304 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=512, Invalid=10618, Unknown=0, NotChecked=0, Total=11130 [2024-11-08 10:11:29,376 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 2651 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 2654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 10:11:29,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1006 Invalid, 2654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2651 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 10:11:29,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-08 10:11:29,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 110. [2024-11-08 10:11:29,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.128440366972477) internal successors, (123), 109 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) [2024-11-08 10:11:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2024-11-08 10:11:29,390 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 73 [2024-11-08 10:11:29,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:11:29,390 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2024-11-08 10:11:29,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.2526315789473683) internal successors, (214), 95 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:29,390 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2024-11-08 10:11:29,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-08 10:11:29,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:11:29,391 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2024-11-08 10:11:29,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-08 10:11:29,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:29,593 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:11:29,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:11:29,594 INFO L85 PathProgramCache]: Analyzing trace with hash 33538966, now seen corresponding path program 19 times [2024-11-08 10:11:29,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:11:29,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016520099] [2024-11-08 10:11:29,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:11:29,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:11:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:11:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 129 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:29,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:11:29,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016520099] [2024-11-08 10:11:29,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016520099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:11:29,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127143315] [2024-11-08 10:11:29,923 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 10:11:29,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:29,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:11:29,924 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) [2024-11-08 10:11:29,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 10:11:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:11:30,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 10:11:30,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:11:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 162 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:30,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:11:30,593 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 162 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:30,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127143315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:11:30,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:11:30,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-08 10:11:30,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448070465] [2024-11-08 10:11:30,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:11:30,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 10:11:30,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:11:30,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 10:11:30,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 10:11:30,595 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand has 35 states, 35 states have (on average 3.4571428571428573) internal successors, (121), 35 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:30,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:11:30,718 INFO L93 Difference]: Finished difference Result 154 states and 167 transitions. [2024-11-08 10:11:30,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 10:11:30,718 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.4571428571428573) internal successors, (121), 35 states have internal predecessors, (121), 0 states have call successors, (0), 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 74 [2024-11-08 10:11:30,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:11:30,719 INFO L225 Difference]: With dead ends: 154 [2024-11-08 10:11:30,719 INFO L226 Difference]: Without dead ends: 110 [2024-11-08 10:11:30,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 117 SyntacticMatches, 19 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 10:11:30,720 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:11:30,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 197 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:11:30,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-08 10:11:30,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-08 10:11:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.1192660550458715) internal successors, (122), 109 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2024-11-08 10:11:30,736 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 74 [2024-11-08 10:11:30,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:11:30,737 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2024-11-08 10:11:30,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.4571428571428573) internal successors, (121), 35 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:30,737 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2024-11-08 10:11:30,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 10:11:30,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:11:30,737 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2024-11-08 10:11:30,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-08 10:11:30,938 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,SelfDestructingSolverStorable26 [2024-11-08 10:11:30,938 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:11:30,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:11:30,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1499458916, now seen corresponding path program 20 times [2024-11-08 10:11:30,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:11:30,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128806193] [2024-11-08 10:11:30,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:11:30,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:11:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:11:31,769 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:31,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:11:31,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128806193] [2024-11-08 10:11:31,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128806193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:11:31,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158018194] [2024-11-08 10:11:31,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:11:31,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:31,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:11:31,771 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) [2024-11-08 10:11:31,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-08 10:11:31,888 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:11:31,888 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:11:31,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-08 10:11:31,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:11:31,989 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 23 treesize of output 1 [2024-11-08 10:11:32,703 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 10:11:32,703 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 23 treesize of output 10 [2024-11-08 10:11:32,744 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 153 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:32,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:11:33,543 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 20 treesize of output 18 [2024-11-08 10:11:33,545 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 26 treesize of output 20 [2024-11-08 10:11:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 144 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:34,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158018194] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:11:34,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:11:34,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 82 [2024-11-08 10:11:34,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51730259] [2024-11-08 10:11:34,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:11:34,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-11-08 10:11:34,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:11:34,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-11-08 10:11:34,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=853, Invalid=5789, Unknown=0, NotChecked=0, Total=6642 [2024-11-08 10:11:34,672 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 82 states, 82 states have (on average 2.426829268292683) internal successors, (199), 82 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:35,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:11:35,792 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2024-11-08 10:11:35,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 10:11:35,792 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.426829268292683) internal successors, (199), 82 states have internal predecessors, (199), 0 states have call successors, (0), 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 77 [2024-11-08 10:11:35,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:11:35,793 INFO L225 Difference]: With dead ends: 154 [2024-11-08 10:11:35,793 INFO L226 Difference]: Without dead ends: 110 [2024-11-08 10:11:35,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2594 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1109, Invalid=8011, Unknown=0, NotChecked=0, Total=9120 [2024-11-08 10:11:35,794 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 45 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 10:11:35,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 627 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 10:11:35,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-08 10:11:35,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-08 10:11:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.110091743119266) internal successors, (121), 109 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:35,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2024-11-08 10:11:35,808 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 77 [2024-11-08 10:11:35,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:11:35,809 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2024-11-08 10:11:35,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.426829268292683) internal successors, (199), 82 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:35,809 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2024-11-08 10:11:35,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-08 10:11:35,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:11:35,810 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2024-11-08 10:11:35,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-08 10:11:36,010 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,SelfDestructingSolverStorable27 [2024-11-08 10:11:36,011 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:11:36,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:11:36,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1642864086, now seen corresponding path program 21 times [2024-11-08 10:11:36,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:11:36,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867495592] [2024-11-08 10:11:36,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:11:36,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:11:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:11:36,995 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:36,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:11:36,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867495592] [2024-11-08 10:11:36,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867495592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:11:36,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931535025] [2024-11-08 10:11:36,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:11:36,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:36,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:11:36,996 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) [2024-11-08 10:11:36,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-08 10:11:37,346 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-08 10:11:37,346 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:11:37,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-08 10:11:37,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:11:37,424 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 [2024-11-08 10:11:37,462 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-08 10:11:37,463 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 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-08 10:11:37,816 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 [2024-11-08 10:11:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:37,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:11:38,816 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 25 treesize of output 23 [2024-11-08 10:11:38,820 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 118 treesize of output 110 [2024-11-08 10:11:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:39,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931535025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:11:39,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:11:39,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 81 [2024-11-08 10:11:39,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844097761] [2024-11-08 10:11:39,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:11:39,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-08 10:11:39,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:11:39,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-08 10:11:39,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=6199, Unknown=1, NotChecked=0, Total=6480 [2024-11-08 10:11:39,646 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 81 states, 81 states have (on average 2.4444444444444446) internal successors, (198), 81 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:40,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:11:40,895 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2024-11-08 10:11:40,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-08 10:11:40,895 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.4444444444444446) internal successors, (198), 81 states have internal predecessors, (198), 0 states have call successors, (0), 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 [2024-11-08 10:11:40,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:11:40,896 INFO L225 Difference]: With dead ends: 118 [2024-11-08 10:11:40,896 INFO L226 Difference]: Without dead ends: 116 [2024-11-08 10:11:40,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2098 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=411, Invalid=8144, Unknown=1, NotChecked=0, Total=8556 [2024-11-08 10:11:40,897 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 58 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 2676 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 10:11:40,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1017 Invalid, 2681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2676 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 10:11:40,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-08 10:11:40,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2024-11-08 10:11:40,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.1061946902654867) internal successors, (125), 113 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:40,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2024-11-08 10:11:40,916 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 80 [2024-11-08 10:11:40,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:11:40,916 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2024-11-08 10:11:40,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.4444444444444446) internal successors, (198), 81 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:40,916 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2024-11-08 10:11:40,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-08 10:11:40,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:11:40,917 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2024-11-08 10:11:40,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-08 10:11:41,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 10:11:41,117 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:11:41,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:11:41,118 INFO L85 PathProgramCache]: Analyzing trace with hash 960432012, now seen corresponding path program 22 times [2024-11-08 10:11:41,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:11:41,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370914811] [2024-11-08 10:11:41,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:11:41,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:11:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:11:42,047 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 0 proven. 422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:42,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:11:42,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370914811] [2024-11-08 10:11:42,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370914811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:11:42,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128745788] [2024-11-08 10:11:42,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:11:42,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:42,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:11:42,050 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:11:42,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-08 10:11:42,295 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:11:42,295 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:11:42,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-08 10:11:42,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:11:42,403 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 23 treesize of output 1 [2024-11-08 10:11:43,240 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 10:11:43,240 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 23 treesize of output 10 [2024-11-08 10:11:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 190 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:43,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:11:44,159 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 20 treesize of output 18 [2024-11-08 10:11:44,161 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 26 treesize of output 20 [2024-11-08 10:11:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 180 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:45,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128745788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:11:45,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:11:45,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 89 [2024-11-08 10:11:45,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305625402] [2024-11-08 10:11:45,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:11:45,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-08 10:11:45,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:11:45,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-08 10:11:45,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=995, Invalid=6837, Unknown=0, NotChecked=0, Total=7832 [2024-11-08 10:11:45,300 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand has 89 states, 89 states have (on average 2.438202247191011) internal successors, (217), 89 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:46,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:11:46,532 INFO L93 Difference]: Finished difference Result 162 states and 173 transitions. [2024-11-08 10:11:46,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-08 10:11:46,533 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.438202247191011) internal successors, (217), 89 states have internal predecessors, (217), 0 states have call successors, (0), 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 [2024-11-08 10:11:46,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:11:46,534 INFO L225 Difference]: With dead ends: 162 [2024-11-08 10:11:46,534 INFO L226 Difference]: Without dead ends: 114 [2024-11-08 10:11:46,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3066 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1284, Invalid=9428, Unknown=0, NotChecked=0, Total=10712 [2024-11-08 10:11:46,535 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 53 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1884 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 10:11:46,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 571 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1884 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 10:11:46,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-08 10:11:46,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-08 10:11:46,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.0973451327433628) internal successors, (124), 113 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) [2024-11-08 10:11:46,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2024-11-08 10:11:46,551 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 84 [2024-11-08 10:11:46,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:11:46,551 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2024-11-08 10:11:46,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.438202247191011) internal successors, (217), 89 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:46,551 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2024-11-08 10:11:46,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-08 10:11:46,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:11:46,551 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2024-11-08 10:11:46,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-08 10:11:46,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:46,752 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:11:46,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:11:46,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1503344878, now seen corresponding path program 23 times [2024-11-08 10:11:46,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:11:46,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258908392] [2024-11-08 10:11:46,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:11:46,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:11:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:11:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:47,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:11:47,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258908392] [2024-11-08 10:11:47,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258908392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:11:47,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094635126] [2024-11-08 10:11:47,763 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:11:47,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:47,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:11:47,764 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:11:47,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-08 10:11:47,977 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-08 10:11:47,977 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:11:47,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-08 10:11:47,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:11:48,771 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 [2024-11-08 10:11:48,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:11:48,863 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 27 treesize of output 11 [2024-11-08 10:11:49,570 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 [2024-11-08 10:11:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:49,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:11:51,084 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 25 treesize of output 23 [2024-11-08 10:11:51,087 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 118 treesize of output 110 [2024-11-08 10:11:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:11:52,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094635126] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:11:52,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:11:52,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 113 [2024-11-08 10:11:52,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998669255] [2024-11-08 10:11:52,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:11:52,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-11-08 10:11:52,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:11:52,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-11-08 10:11:52,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=12192, Unknown=2, NotChecked=0, Total=12656 [2024-11-08 10:11:52,212 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand has 113 states, 113 states have (on average 2.265486725663717) internal successors, (256), 113 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:53,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:11:53,790 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2024-11-08 10:11:53,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-08 10:11:53,790 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.265486725663717) internal successors, (256), 113 states have internal predecessors, (256), 0 states have call successors, (0), 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 87 [2024-11-08 10:11:53,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:11:53,791 INFO L225 Difference]: With dead ends: 122 [2024-11-08 10:11:53,791 INFO L226 Difference]: Without dead ends: 120 [2024-11-08 10:11:53,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4760 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=626, Invalid=15374, Unknown=2, NotChecked=0, Total=16002 [2024-11-08 10:11:53,792 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 176 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 3434 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 3442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:11:53,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 1291 Invalid, 3442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 3434 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 10:11:53,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-08 10:11:53,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2024-11-08 10:11:53,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0940170940170941) internal successors, (128), 117 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2024-11-08 10:11:53,810 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 87 [2024-11-08 10:11:53,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:11:53,810 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2024-11-08 10:11:53,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.265486725663717) internal successors, (256), 113 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:11:53,810 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2024-11-08 10:11:53,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 10:11:53,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:11:53,811 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2024-11-08 10:11:53,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-08 10:11:54,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:11:54,012 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:11:54,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:11:54,012 INFO L85 PathProgramCache]: Analyzing trace with hash -762793272, now seen corresponding path program 24 times [2024-11-08 10:11:54,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:11:54,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064323628] [2024-11-08 10:11:54,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:11:54,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:11:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat