./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/array-tiling/nr3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c4f91361 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/array-tiling/nr3.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 4885a4fffd0288753086daaa59bdb12816a7be62636dc49311bbb97ad277d866 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-c4f9136-m [2023-11-23 14:43:19,342 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 14:43:19,397 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 14:43:19,406 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 14:43:19,407 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 14:43:19,433 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 14:43:19,434 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 14:43:19,434 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 14:43:19,435 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 14:43:19,439 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 14:43:19,440 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 14:43:19,440 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 14:43:19,441 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 14:43:19,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 14:43:19,442 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 14:43:19,442 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 14:43:19,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 14:43:19,443 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 14:43:19,443 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 14:43:19,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 14:43:19,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 14:43:19,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 14:43:19,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 14:43:19,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 14:43:19,444 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 14:43:19,445 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 14:43:19,445 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 14:43:19,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 14:43:19,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 14:43:19,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 14:43:19,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 14:43:19,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 14:43:19,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 14:43:19,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 14:43:19,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 14:43:19,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 14:43:19,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 14:43:19,448 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 14:43:19,448 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 14:43:19,448 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 14:43:19,448 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 14:43:19,449 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 14:43:19,449 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4885a4fffd0288753086daaa59bdb12816a7be62636dc49311bbb97ad277d866 [2023-11-23 14:43:19,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 14:43:19,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 14:43:19,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 14:43:19,641 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 14:43:19,641 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 14:43:19,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/nr3.c [2023-11-23 14:43:20,636 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 14:43:20,787 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 14:43:20,788 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/nr3.c [2023-11-23 14:43:20,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20d8d1771/8eab4ebff5744b3b8698b4ce0672e8f8/FLAGb8f7e905b [2023-11-23 14:43:20,804 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20d8d1771/8eab4ebff5744b3b8698b4ce0672e8f8 [2023-11-23 14:43:20,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 14:43:20,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 14:43:20,808 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 14:43:20,808 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 14:43:20,812 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 14:43:20,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:43:20" (1/1) ... [2023-11-23 14:43:20,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1643e156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:20, skipping insertion in model container [2023-11-23 14:43:20,814 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:43:20" (1/1) ... [2023-11-23 14:43:20,828 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 14:43:20,976 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/nr3.c[394,407] [2023-11-23 14:43:20,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 14:43:20,992 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 14:43:21,001 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/nr3.c[394,407] [2023-11-23 14:43:21,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 14:43:21,016 INFO L206 MainTranslator]: Completed translation [2023-11-23 14:43:21,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21 WrapperNode [2023-11-23 14:43:21,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 14:43:21,017 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 14:43:21,018 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 14:43:21,018 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 14:43:21,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2023-11-23 14:43:21,028 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2023-11-23 14:43:21,041 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2023-11-23 14:43:21,042 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 14:43:21,042 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 14:43:21,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 14:43:21,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 14:43:21,050 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2023-11-23 14:43:21,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2023-11-23 14:43:21,051 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2023-11-23 14:43:21,060 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 6, 4]. 50 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 2 writes are split as follows [0, 0, 2]. [2023-11-23 14:43:21,060 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2023-11-23 14:43:21,061 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2023-11-23 14:43:21,064 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2023-11-23 14:43:21,066 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2023-11-23 14:43:21,067 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2023-11-23 14:43:21,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2023-11-23 14:43:21,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 14:43:21,069 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 14:43:21,070 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 14:43:21,070 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 14:43:21,070 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (1/1) ... [2023-11-23 14:43:21,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 14:43:21,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:43:21,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 14:43:21,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 14:43:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 14:43:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 14:43:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 14:43:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 14:43:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 14:43:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 14:43:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 14:43:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 14:43:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 14:43:21,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 14:43:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 14:43:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 14:43:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 14:43:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 14:43:21,202 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 14:43:21,204 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 14:43:21,333 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 14:43:21,349 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 14:43:21,349 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 14:43:21,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:43:21 BoogieIcfgContainer [2023-11-23 14:43:21,350 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 14:43:21,351 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 14:43:21,352 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 14:43:21,354 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 14:43:21,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:43:20" (1/3) ... [2023-11-23 14:43:21,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56dc19e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:43:21, skipping insertion in model container [2023-11-23 14:43:21,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:21" (2/3) ... [2023-11-23 14:43:21,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56dc19e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:43:21, skipping insertion in model container [2023-11-23 14:43:21,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:43:21" (3/3) ... [2023-11-23 14:43:21,356 INFO L112 eAbstractionObserver]: Analyzing ICFG nr3.c [2023-11-23 14:43:21,369 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 14:43:21,369 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 14:43:21,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 14:43:21,404 INFO L357 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, mHoare=true, 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;@1fa9e644, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 14:43:21,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 14:43:21,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.65) internal successors, (33), 21 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) [2023-11-23 14:43:21,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 14:43:21,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:43:21,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:43:21,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:43:21,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:43:21,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2106680282, now seen corresponding path program 1 times [2023-11-23 14:43:21,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:43:21,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296632704] [2023-11-23 14:43:21,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:43:21,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:43:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:43:21,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:43:21,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:43:21,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296632704] [2023-11-23 14:43:21,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296632704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:43:21,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:43:21,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 14:43:21,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049336997] [2023-11-23 14:43:21,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:43:21,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 14:43:21,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:43:21,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 14:43:21,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 14:43:21,578 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.65) internal successors, (33), 21 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:43:21,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:43:21,593 INFO L93 Difference]: Finished difference Result 40 states and 59 transitions. [2023-11-23 14:43:21,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 14:43:21,595 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-23 14:43:21,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:43:21,600 INFO L225 Difference]: With dead ends: 40 [2023-11-23 14:43:21,600 INFO L226 Difference]: Without dead ends: 18 [2023-11-23 14:43:21,602 INFO L412 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 [2023-11-23 14:43:21,604 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:43:21,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:43:21,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-23 14:43:21,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-23 14:43:21,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:43:21,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-11-23 14:43:21,625 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2023-11-23 14:43:21,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:43:21,626 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-11-23 14:43:21,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:43:21,626 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-23 14:43:21,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 14:43:21,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:43:21,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:43:21,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 14:43:21,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:43:21,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:43:21,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1426621912, now seen corresponding path program 1 times [2023-11-23 14:43:21,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:43:21,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844509272] [2023-11-23 14:43:21,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:43:21,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:43:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:43:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:43:21,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:43:21,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844509272] [2023-11-23 14:43:21,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844509272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:43:21,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:43:21,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 14:43:21,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748400692] [2023-11-23 14:43:21,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:43:21,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 14:43:21,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:43:21,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 14:43:21,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 14:43:21,827 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:43:21,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:43:21,867 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2023-11-23 14:43:21,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 14:43:21,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-23 14:43:21,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:43:21,868 INFO L225 Difference]: With dead ends: 23 [2023-11-23 14:43:21,868 INFO L226 Difference]: Without dead ends: 21 [2023-11-23 14:43:21,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 14:43:21,869 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:43:21,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 51 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:43:21,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-23 14:43:21,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2023-11-23 14:43:21,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 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) [2023-11-23 14:43:21,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-11-23 14:43:21,873 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 12 [2023-11-23 14:43:21,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:43:21,873 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-11-23 14:43:21,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:43:21,873 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-11-23 14:43:21,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 14:43:21,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:43:21,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:43:21,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 14:43:21,874 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:43:21,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:43:21,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1426562330, now seen corresponding path program 1 times [2023-11-23 14:43:21,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:43:21,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679491187] [2023-11-23 14:43:21,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:43:21,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:43:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:43:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:43:22,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:43:22,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679491187] [2023-11-23 14:43:22,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679491187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:43:22,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:43:22,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 14:43:22,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920521729] [2023-11-23 14:43:22,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:43:22,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 14:43:22,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:43:22,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 14:43:22,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 14:43:22,113 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:43:22,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:43:22,145 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2023-11-23 14:43:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 14:43:22,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-23 14:43:22,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:43:22,146 INFO L225 Difference]: With dead ends: 35 [2023-11-23 14:43:22,146 INFO L226 Difference]: Without dead ends: 25 [2023-11-23 14:43:22,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 14:43:22,149 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 54 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:43:22,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 22 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:43:22,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-23 14:43:22,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2023-11-23 14:43:22,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 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) [2023-11-23 14:43:22,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-11-23 14:43:22,157 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2023-11-23 14:43:22,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:43:22,157 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-11-23 14:43:22,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:43:22,158 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-11-23 14:43:22,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 14:43:22,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:43:22,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:43:22,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 14:43:22,159 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:43:22,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:43:22,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1008841274, now seen corresponding path program 1 times [2023-11-23 14:43:22,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:43:22,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270123441] [2023-11-23 14:43:22,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:43:22,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:43:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:43:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:43:22,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:43:22,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270123441] [2023-11-23 14:43:22,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270123441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:43:22,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:43:22,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 14:43:22,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851173299] [2023-11-23 14:43:22,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:43:22,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 14:43:22,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:43:22,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 14:43:22,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 14:43:22,192 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2023-11-23 14:43:22,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:43:22,209 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-11-23 14:43:22,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 14:43:22,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) Word has length 15 [2023-11-23 14:43:22,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:43:22,210 INFO L225 Difference]: With dead ends: 39 [2023-11-23 14:43:22,210 INFO L226 Difference]: Without dead ends: 24 [2023-11-23 14:43:22,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 14:43:22,211 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:43:22,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 29 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:43:22,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-23 14:43:22,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2023-11-23 14:43:22,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 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) [2023-11-23 14:43:22,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-11-23 14:43:22,215 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2023-11-23 14:43:22,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:43:22,215 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-11-23 14:43:22,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2023-11-23 14:43:22,216 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-11-23 14:43:22,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 14:43:22,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:43:22,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:43:22,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 14:43:22,217 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:43:22,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:43:22,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1963751443, now seen corresponding path program 1 times [2023-11-23 14:43:22,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:43:22,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566114824] [2023-11-23 14:43:22,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:43:22,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:43:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:43:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:43:22,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:43:22,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566114824] [2023-11-23 14:43:22,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566114824] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:43:22,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359747055] [2023-11-23 14:43:22,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:43:22,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:43:22,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:43:22,309 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) [2023-11-23 14:43:22,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 14:43:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:43:22,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 14:43:22,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:43:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:43:22,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:43:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:43:22,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359747055] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 14:43:22,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 14:43:22,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-11-23 14:43:22,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18228852] [2023-11-23 14:43:22,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 14:43:22,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 14:43:22,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:43:22,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 14:43:22,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 14:43:22,428 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 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) [2023-11-23 14:43:22,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:43:22,463 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2023-11-23 14:43:22,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 14:43:22,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 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) Word has length 18 [2023-11-23 14:43:22,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:43:22,464 INFO L225 Difference]: With dead ends: 44 [2023-11-23 14:43:22,464 INFO L226 Difference]: Without dead ends: 28 [2023-11-23 14:43:22,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 14:43:22,465 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:43:22,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 42 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:43:22,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-23 14:43:22,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-23 14:43:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:43:22,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2023-11-23 14:43:22,469 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 18 [2023-11-23 14:43:22,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:43:22,469 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2023-11-23 14:43:22,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 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) [2023-11-23 14:43:22,470 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2023-11-23 14:43:22,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 14:43:22,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:43:22,470 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:43:22,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 14:43:22,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:43:22,678 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:43:22,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:43:22,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1711246131, now seen corresponding path program 2 times [2023-11-23 14:43:22,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:43:22,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876080553] [2023-11-23 14:43:22,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:43:22,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:43:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:43:22,783 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:43:22,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:43:22,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876080553] [2023-11-23 14:43:22,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876080553] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:43:22,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135970814] [2023-11-23 14:43:22,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 14:43:22,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:43:22,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:43:22,785 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) [2023-11-23 14:43:22,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 14:43:22,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 14:43:22,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 14:43:22,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 14:43:22,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:43:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:43:22,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 14:43:22,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135970814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:43:22,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 14:43:22,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2023-11-23 14:43:22,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500118109] [2023-11-23 14:43:22,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:43:22,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 14:43:22,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:43:22,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 14:43:22,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-11-23 14:43:22,907 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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) [2023-11-23 14:43:22,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:43:22,931 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2023-11-23 14:43:22,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 14:43:22,931 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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 24 [2023-11-23 14:43:22,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:43:22,932 INFO L225 Difference]: With dead ends: 50 [2023-11-23 14:43:22,932 INFO L226 Difference]: Without dead ends: 28 [2023-11-23 14:43:22,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-11-23 14:43:22,941 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:43:22,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 24 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:43:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-23 14:43:22,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-23 14:43:22,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 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) [2023-11-23 14:43:22,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-11-23 14:43:22,945 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 24 [2023-11-23 14:43:22,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:43:22,945 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-11-23 14:43:22,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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) [2023-11-23 14:43:22,945 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-11-23 14:43:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 14:43:22,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:43:22,946 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:43:22,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 14:43:23,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 14:43:23,165 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:43:23,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:43:23,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1010181553, now seen corresponding path program 1 times [2023-11-23 14:43:23,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:43:23,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182843794] [2023-11-23 14:43:23,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:43:23,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:43:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:43:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:43:23,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:43:23,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182843794] [2023-11-23 14:43:23,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182843794] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:43:23,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261078591] [2023-11-23 14:43:23,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:43:23,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:43:23,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:43:23,541 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) [2023-11-23 14:43:23,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 14:43:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:43:23,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-23 14:43:23,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:43:23,753 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 [2023-11-23 14:43:23,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-23 14:43:23,891 INFO L349 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2023-11-23 14:43:23,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 40 [2023-11-23 14:43:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:43:24,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:43:24,359 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 63 treesize of output 59 [2023-11-23 14:43:24,362 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 283 treesize of output 275 [2023-11-23 14:43:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 14:43:24,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261078591] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 14:43:24,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 14:43:24,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 37 [2023-11-23 14:43:24,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870363633] [2023-11-23 14:43:24,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 14:43:24,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-23 14:43:24,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:43:24,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-23 14:43:24,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 14:43:24,510 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 37 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 37 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) [2023-11-23 14:43:26,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:43:26,708 INFO L93 Difference]: Finished difference Result 164 states and 197 transitions. [2023-11-23 14:43:26,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-23 14:43:26,708 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 37 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) Word has length 24 [2023-11-23 14:43:26,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:43:26,710 INFO L225 Difference]: With dead ends: 164 [2023-11-23 14:43:26,710 INFO L226 Difference]: Without dead ends: 142 [2023-11-23 14:43:26,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2570 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1777, Invalid=7153, Unknown=0, NotChecked=0, Total=8930 [2023-11-23 14:43:26,713 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 630 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 14:43:26,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 110 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 14:43:26,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-23 14:43:26,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 48. [2023-11-23 14:43:26,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 47 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) [2023-11-23 14:43:26,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2023-11-23 14:43:26,731 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 24 [2023-11-23 14:43:26,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:43:26,732 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2023-11-23 14:43:26,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 37 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) [2023-11-23 14:43:26,732 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2023-11-23 14:43:26,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 14:43:26,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:43:26,733 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:43:26,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 14:43:26,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:43:26,944 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:43:26,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:43:26,945 INFO L85 PathProgramCache]: Analyzing trace with hash 469747151, now seen corresponding path program 1 times [2023-11-23 14:43:26,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:43:26,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099157344] [2023-11-23 14:43:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:43:26,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:43:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:43:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:43:27,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:43:27,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099157344] [2023-11-23 14:43:27,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099157344] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:43:27,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274106092] [2023-11-23 14:43:27,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:43:27,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:43:27,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:43:27,199 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) [2023-11-23 14:43:27,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 14:43:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:43:27,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 14:43:27,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:43:27,283 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 13 treesize of output 9 [2023-11-23 14:43:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:43:27,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:43:27,366 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 17 [2023-11-23 14:43:27,367 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 [2023-11-23 14:43:27,464 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:43:27,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274106092] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 14:43:27,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 14:43:27,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 23 [2023-11-23 14:43:27,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934080997] [2023-11-23 14:43:27,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 14:43:27,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 14:43:27,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:43:27,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 14:43:27,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-11-23 14:43:27,466 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 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) [2023-11-23 14:43:28,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:43:28,149 INFO L93 Difference]: Finished difference Result 168 states and 195 transitions. [2023-11-23 14:43:28,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-23 14:43:28,150 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 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 34 [2023-11-23 14:43:28,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:43:28,151 INFO L225 Difference]: With dead ends: 168 [2023-11-23 14:43:28,151 INFO L226 Difference]: Without dead ends: 166 [2023-11-23 14:43:28,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=661, Invalid=3245, Unknown=0, NotChecked=0, Total=3906 [2023-11-23 14:43:28,152 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 176 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 14:43:28,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 148 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 14:43:28,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-23 14:43:28,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 75. [2023-11-23 14:43:28,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.2297297297297298) internal successors, (91), 74 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:43:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2023-11-23 14:43:28,164 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 34 [2023-11-23 14:43:28,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:43:28,164 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2023-11-23 14:43:28,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 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) [2023-11-23 14:43:28,165 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2023-11-23 14:43:28,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-23 14:43:28,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:43:28,165 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:43:28,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 14:43:28,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:43:28,376 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:43:28,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:43:28,377 INFO L85 PathProgramCache]: Analyzing trace with hash 508323451, now seen corresponding path program 2 times [2023-11-23 14:43:28,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:43:28,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152183847] [2023-11-23 14:43:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:43:28,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:43:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:43:28,612 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 14:43:28,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:43:28,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152183847] [2023-11-23 14:43:28,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152183847] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:43:28,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298096481] [2023-11-23 14:43:28,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 14:43:28,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:43:28,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:43:28,614 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) [2023-11-23 14:43:28,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 14:43:28,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 14:43:28,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 14:43:28,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 14:43:28,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:43:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 14:43:28,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:43:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 14:43:29,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298096481] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 14:43:29,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 14:43:29,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 28 [2023-11-23 14:43:29,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429595599] [2023-11-23 14:43:29,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 14:43:29,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-23 14:43:29,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:43:29,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-23 14:43:29,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2023-11-23 14:43:29,073 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand has 28 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 28 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:43:29,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:43:29,210 INFO L93 Difference]: Finished difference Result 127 states and 152 transitions. [2023-11-23 14:43:29,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 14:43:29,211 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 28 states have internal predecessors, (92), 0 states have call successors, (0), 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 39 [2023-11-23 14:43:29,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:43:29,211 INFO L225 Difference]: With dead ends: 127 [2023-11-23 14:43:29,211 INFO L226 Difference]: Without dead ends: 101 [2023-11-23 14:43:29,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=289, Invalid=767, Unknown=0, NotChecked=0, Total=1056 [2023-11-23 14:43:29,214 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 116 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 14:43:29,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 136 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 14:43:29,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-23 14:43:29,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 67. [2023-11-23 14:43:29,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 66 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:43:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2023-11-23 14:43:29,236 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 39 [2023-11-23 14:43:29,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:43:29,236 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2023-11-23 14:43:29,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 28 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:43:29,236 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2023-11-23 14:43:29,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-23 14:43:29,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:43:29,237 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:43:29,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 14:43:29,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:43:29,446 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:43:29,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:43:29,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1285797454, now seen corresponding path program 3 times [2023-11-23 14:43:29,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:43:29,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288741813] [2023-11-23 14:43:29,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:43:29,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:43:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:43:30,235 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:43:30,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:43:30,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288741813] [2023-11-23 14:43:30,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288741813] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:43:30,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343572698] [2023-11-23 14:43:30,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 14:43:30,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:43:30,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:43:30,236 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) [2023-11-23 14:43:30,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 14:43:30,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-23 14:43:30,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 14:43:30,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-23 14:43:30,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:43:30,375 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 [2023-11-23 14:43:30,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:43:30,434 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 31 treesize of output 11 [2023-11-23 14:43:30,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:43:30,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-11-23 14:43:30,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:43:30,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:43:30,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:43:30,610 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 14:43:30,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2023-11-23 14:43:30,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:43:30,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:43:30,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:43:30,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:43:30,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:43:30,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:43:30,754 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 14:43:30,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 43 [2023-11-23 14:43:31,091 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:43:31,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:44:27,559 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 61 treesize of output 59 [2023-11-23 14:44:27,568 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 47342 treesize of output 47086 [2023-11-23 14:44:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 5 proven. 60 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:44:28,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343572698] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 14:44:28,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 14:44:28,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 53 [2023-11-23 14:44:28,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112247864] [2023-11-23 14:44:28,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 14:44:28,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-23 14:44:28,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:44:28,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-23 14:44:28,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2351, Unknown=23, NotChecked=0, Total=2756 [2023-11-23 14:44:28,024 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 53 states, 53 states have (on average 2.188679245283019) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:44:29,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:44:29,707 INFO L93 Difference]: Finished difference Result 138 states and 166 transitions. [2023-11-23 14:44:29,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-23 14:44:29,707 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.188679245283019) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 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 41 [2023-11-23 14:44:29,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:44:29,708 INFO L225 Difference]: With dead ends: 138 [2023-11-23 14:44:29,708 INFO L226 Difference]: Without dead ends: 89 [2023-11-23 14:44:29,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2250 ImplicationChecksByTransitivity, 57.9s TimeCoverageRelationStatistics Valid=1108, Invalid=6009, Unknown=23, NotChecked=0, Total=7140 [2023-11-23 14:44:29,710 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 327 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 14:44:29,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 160 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 14:44:29,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-23 14:44:29,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 47. [2023-11-23 14:44:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 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) [2023-11-23 14:44:29,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2023-11-23 14:44:29,721 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 41 [2023-11-23 14:44:29,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:44:29,723 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2023-11-23 14:44:29,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.188679245283019) internal successors, (116), 53 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:44:29,723 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2023-11-23 14:44:29,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-23 14:44:29,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:44:29,728 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:44:29,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 14:44:29,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:44:29,940 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:44:29,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:44:29,940 INFO L85 PathProgramCache]: Analyzing trace with hash -827991944, now seen corresponding path program 4 times [2023-11-23 14:44:29,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:44:29,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218994719] [2023-11-23 14:44:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:44:29,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:44:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:44:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 4 proven. 70 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 14:44:30,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:44:30,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218994719] [2023-11-23 14:44:30,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218994719] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:44:30,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063146319] [2023-11-23 14:44:30,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 14:44:30,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:44:30,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:44:30,435 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) [2023-11-23 14:44:30,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 14:44:30,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 14:44:30,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 14:44:30,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-23 14:44:30,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:44:30,655 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 [2023-11-23 14:44:30,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:30,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-11-23 14:44:30,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:30,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:30,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:30,846 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 14:44:30,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2023-11-23 14:44:30,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:30,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:30,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:30,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:30,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:30,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:30,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 14:44:30,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 43 [2023-11-23 14:44:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 7 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:44:31,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:44:33,601 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_55| Int)) (or (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_55| 1)) (= (select (store (select |c_#memory_int#2| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (* |v_ULTIMATE.start_main_~j~0#1_55| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* 12 |c_ULTIMATE.start_main_~i~0#1|)) |v_ULTIMATE.start_main_~j~0#1_55|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) 0))) is different from false [2023-11-23 14:44:35,613 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_55| Int)) (or (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_55| 1)) (= (select (let ((.cse0 (* 12 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int#2| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| (- 4)) .cse0) |c_ULTIMATE.start_main_~j~0#1|) (+ (* |v_ULTIMATE.start_main_~j~0#1_55| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0) |v_ULTIMATE.start_main_~j~0#1_55|)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) 0))) is different from false [2023-11-23 14:44:41,763 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_55| Int) (|v_ULTIMATE.start_main_~j~0#1_56| Int)) (or (= (select (let ((.cse0 (* 12 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (store (select |c_#memory_int#2| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| (- 4)) .cse0) |c_ULTIMATE.start_main_~j~0#1|) (+ (* |v_ULTIMATE.start_main_~j~0#1_56| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0) |v_ULTIMATE.start_main_~j~0#1_56|) (+ (* |v_ULTIMATE.start_main_~j~0#1_55| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0) |v_ULTIMATE.start_main_~j~0#1_55|)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) 0) (< |v_ULTIMATE.start_main_~j~0#1_56| (+ |v_ULTIMATE.start_main_~j~0#1_55| 1)) (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_56| 1)))) is different from false [2023-11-23 14:44:41,843 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 17 [2023-11-23 14:44:41,845 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 [2023-11-23 14:44:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 27 not checked. [2023-11-23 14:44:41,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063146319] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 14:44:41,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 14:44:41,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 21] total 49 [2023-11-23 14:44:41,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423774944] [2023-11-23 14:44:41,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 14:44:41,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-23 14:44:41,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:44:41,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-23 14:44:41,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1799, Unknown=5, NotChecked=270, Total=2352 [2023-11-23 14:44:41,936 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 49 states, 49 states have (on average 2.36734693877551) internal successors, (116), 49 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:44:43,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:44:43,640 INFO L93 Difference]: Finished difference Result 152 states and 175 transitions. [2023-11-23 14:44:43,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-23 14:44:43,641 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.36734693877551) internal successors, (116), 49 states have internal predecessors, (116), 0 states have call successors, (0), 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 46 [2023-11-23 14:44:43,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:44:43,641 INFO L225 Difference]: With dead ends: 152 [2023-11-23 14:44:43,641 INFO L226 Difference]: Without dead ends: 118 [2023-11-23 14:44:43,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 62 SyntacticMatches, 7 SemanticMatches, 85 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 2400 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=844, Invalid=6135, Unknown=5, NotChecked=498, Total=7482 [2023-11-23 14:44:43,643 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 138 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 333 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 14:44:43,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 162 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 996 Invalid, 0 Unknown, 333 Unchecked, 0.6s Time] [2023-11-23 14:44:43,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-23 14:44:43,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 52. [2023-11-23 14:44:43,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 51 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) [2023-11-23 14:44:43,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2023-11-23 14:44:43,651 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 46 [2023-11-23 14:44:43,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:44:43,652 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2023-11-23 14:44:43,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.36734693877551) internal successors, (116), 49 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:44:43,652 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2023-11-23 14:44:43,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 14:44:43,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:44:43,652 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:44:43,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 14:44:43,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:44:43,863 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:44:43,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:44:43,864 INFO L85 PathProgramCache]: Analyzing trace with hash -83585678, now seen corresponding path program 5 times [2023-11-23 14:44:43,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:44:43,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036707649] [2023-11-23 14:44:43,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:44:43,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:44:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:44:44,396 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 14:44:44,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:44:44,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036707649] [2023-11-23 14:44:44,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036707649] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:44:44,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353149118] [2023-11-23 14:44:44,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 14:44:44,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:44:44,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:44:44,416 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) [2023-11-23 14:44:44,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 14:44:44,516 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-11-23 14:44:44,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 14:44:44,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-23 14:44:44,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:44:44,611 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 [2023-11-23 14:44:44,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:44,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-11-23 14:44:44,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:44,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:44,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:44,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 14:44:44,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2023-11-23 14:44:44,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:44,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:44,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:44,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:44,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:44,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:44:44,913 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 14:44:44,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 56 [2023-11-23 14:44:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 23 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 14:44:45,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:45:28,926 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 51 treesize of output 49 [2023-11-23 14:45:28,930 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 1470 treesize of output 1454 [2023-11-23 14:45:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 70 refuted. 1 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 14:45:29,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353149118] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 14:45:29,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 14:45:29,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 50 [2023-11-23 14:45:29,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919788000] [2023-11-23 14:45:29,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 14:45:29,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-23 14:45:29,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:45:29,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-23 14:45:29,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=2089, Unknown=21, NotChecked=0, Total=2450 [2023-11-23 14:45:29,251 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 50 states, 50 states have (on average 2.64) internal successors, (132), 50 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:45:31,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 14:45:33,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 14:45:36,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:45:36,842 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2023-11-23 14:45:36,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-23 14:45:36,843 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.64) internal successors, (132), 50 states have internal predecessors, (132), 0 states have call successors, (0), 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 51 [2023-11-23 14:45:36,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:45:36,843 INFO L225 Difference]: With dead ends: 117 [2023-11-23 14:45:36,843 INFO L226 Difference]: Without dead ends: 108 [2023-11-23 14:45:36,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2100 ImplicationChecksByTransitivity, 47.0s TimeCoverageRelationStatistics Valid=1066, Invalid=5718, Unknown=22, NotChecked=0, Total=6806 [2023-11-23 14:45:36,845 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 210 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 66 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-23 14:45:36,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 272 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 750 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2023-11-23 14:45:36,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-23 14:45:36,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 52. [2023-11-23 14:45:36,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:45:36,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2023-11-23 14:45:36,855 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 51 [2023-11-23 14:45:36,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:45:36,868 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2023-11-23 14:45:36,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.64) internal successors, (132), 50 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:45:36,868 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2023-11-23 14:45:36,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 14:45:36,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:45:36,869 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:45:36,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 14:45:37,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 14:45:37,083 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:45:37,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:45:37,084 INFO L85 PathProgramCache]: Analyzing trace with hash 596472692, now seen corresponding path program 6 times [2023-11-23 14:45:37,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:45:37,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522734098] [2023-11-23 14:45:37,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:45:37,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:45:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:45:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 14:45:37,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:45:37,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522734098] [2023-11-23 14:45:37,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522734098] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:45:37,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103012705] [2023-11-23 14:45:37,591 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-23 14:45:37,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:45:37,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:45:37,592 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) [2023-11-23 14:45:37,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 14:45:37,690 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-11-23 14:45:37,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 14:45:37,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 14:45:37,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:45:37,790 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 [2023-11-23 14:45:37,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:45:37,837 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 23 treesize of output 22 [2023-11-23 14:45:37,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:45:37,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:45:37,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:45:37,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 14:45:37,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2023-11-23 14:45:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 8 proven. 69 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 14:45:38,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:45:40,477 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_221 Int) (|v_ULTIMATE.start_main_~j~0#1_77| Int)) (or (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (let ((.cse0 (* 12 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int#2| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~j~0#1| (- 4)) .cse0) |c_ULTIMATE.start_main_~j~0#1|) (+ (* |v_ULTIMATE.start_main_~j~0#1_77| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0) v_ArrVal_221)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) 1)) (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_77| 1)))) is different from false [2023-11-23 14:45:46,938 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 41 treesize of output 39 [2023-11-23 14:45:46,940 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 358 treesize of output 350 [2023-11-23 14:45:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 7 proven. 58 refuted. 0 times theorem prover too weak. 12 trivial. 12 not checked. [2023-11-23 14:45:47,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103012705] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 14:45:47,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 14:45:47,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 16] total 45 [2023-11-23 14:45:47,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553328410] [2023-11-23 14:45:47,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 14:45:47,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-23 14:45:47,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:45:47,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-23 14:45:47,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1632, Unknown=4, NotChecked=84, Total=1980 [2023-11-23 14:45:47,137 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 45 states, 45 states have (on average 2.911111111111111) internal successors, (131), 45 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:45:49,896 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (let ((.cse5 (select .cse0 12))) (let ((.cse3 (* |c_ULTIMATE.start_main_~j~0#1| (- 4))) (.cse1 (* 12 |c_ULTIMATE.start_main_~i~0#1|)) (.cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) (.cse4 (= .cse5 3))) (and (forall ((|v_ULTIMATE.start_main_~j~0#1_77| Int)) (or (forall ((v_ArrVal_221 Int)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (store .cse0 (+ (* |v_ULTIMATE.start_main_~j~0#1_77| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1) v_ArrVal_221) .cse2) 1))) (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_77| 1)))) (= 3 (select (store .cse0 (+ .cse3 .cse1) |c_ULTIMATE.start_main_~j~0#1|) 12)) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) .cse4 (forall ((v_ArrVal_221 Int)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (store .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 .cse1) v_ArrVal_221) .cse2) 1))) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= 3 |c_ULTIMATE.start_main_~i~0#1|) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select .cse0 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset|)) 1)) (or (= .cse5 0) .cse4))))) is different from false [2023-11-23 14:45:50,572 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (let ((.cse6 (select .cse0 12))) (let ((.cse3 (* |c_ULTIMATE.start_main_~j~0#1| (- 4))) (.cse1 (* 12 |c_ULTIMATE.start_main_~i~0#1|)) (.cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) (.cse5 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse4 (= .cse6 3))) (and (forall ((|v_ULTIMATE.start_main_~j~0#1_77| Int)) (or (forall ((v_ArrVal_221 Int)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (store .cse0 (+ (* |v_ULTIMATE.start_main_~j~0#1_77| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1) v_ArrVal_221) .cse2) 1))) (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_77| 1)))) (= 3 (select (store .cse0 (+ .cse3 .cse1) |c_ULTIMATE.start_main_~j~0#1|) 12)) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) .cse4 (forall ((v_ArrVal_221 Int)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select (store .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 .cse1) v_ArrVal_221) .cse2) 1))) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= 3 |c_ULTIMATE.start_main_~i~0#1|) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select .cse0 (+ .cse5 |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) 1)) (< |c_ULTIMATE.start_main_~MINVAL~0#1| (+ (select .cse0 (+ .cse5 |c_ULTIMATE.start_main_~#volArray~0#1.offset|)) 1)) (or (= .cse6 0) .cse4))))) is different from false [2023-11-23 14:46:04,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 14:46:28,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 14:46:29,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 14:46:34,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 14:46:36,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 14:46:38,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 14:46:40,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 14:46:41,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-23 14:46:43,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:43,284 INFO L93 Difference]: Finished difference Result 260 states and 292 transitions. [2023-11-23 14:46:43,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-11-23 14:46:43,284 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.911111111111111) internal successors, (131), 45 states have internal predecessors, (131), 0 states have call successors, (0), 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 51 [2023-11-23 14:46:43,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:43,285 INFO L225 Difference]: With dead ends: 260 [2023-11-23 14:46:43,285 INFO L226 Difference]: Without dead ends: 251 [2023-11-23 14:46:43,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 76 SyntacticMatches, 5 SemanticMatches, 101 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3307 ImplicationChecksByTransitivity, 48.2s TimeCoverageRelationStatistics Valid=1374, Invalid=8531, Unknown=7, NotChecked=594, Total=10506 [2023-11-23 14:46:43,287 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 358 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 65 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 320 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:43,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 304 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1041 Invalid, 6 Unknown, 320 Unchecked, 16.8s Time] [2023-11-23 14:46:43,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-23 14:46:43,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 131. [2023-11-23 14:46:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.1538461538461537) internal successors, (150), 130 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:43,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 150 transitions. [2023-11-23 14:46:43,319 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 150 transitions. Word has length 51 [2023-11-23 14:46:43,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:43,319 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 150 transitions. [2023-11-23 14:46:43,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.911111111111111) internal successors, (131), 45 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:43,320 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 150 transitions. [2023-11-23 14:46:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 14:46:43,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:43,320 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:46:43,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-23 14:46:43,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 14:46:43,527 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:46:43,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:43,529 INFO L85 PathProgramCache]: Analyzing trace with hash 382892022, now seen corresponding path program 7 times [2023-11-23 14:46:43,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:43,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513567076] [2023-11-23 14:46:43,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:43,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:43,898 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 8 proven. 88 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 14:46:43,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:43,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513567076] [2023-11-23 14:46:43,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513567076] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:46:43,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627649867] [2023-11-23 14:46:43,900 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-23 14:46:43,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:43,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:46:43,901 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) [2023-11-23 14:46:43,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 14:46:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:43,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-23 14:46:43,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:46:44,164 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 [2023-11-23 14:46:44,213 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-23 14:46:44,214 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 23 treesize of output 26 [2023-11-23 14:46:44,706 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 14:46:44,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:46:45,009 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 41 treesize of output 37 [2023-11-23 14:46:45,018 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 59 treesize of output 51 [2023-11-23 14:46:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 14:46:45,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627649867] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 14:46:45,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 14:46:45,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 42 [2023-11-23 14:46:45,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107438501] [2023-11-23 14:46:45,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 14:46:45,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-23 14:46:45,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:45,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-23 14:46:45,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1514, Unknown=0, NotChecked=0, Total=1722 [2023-11-23 14:46:45,180 INFO L87 Difference]: Start difference. First operand 131 states and 150 transitions. Second operand has 42 states, 42 states have (on average 3.4761904761904763) internal successors, (146), 42 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:47,013 INFO L93 Difference]: Finished difference Result 264 states and 296 transitions. [2023-11-23 14:46:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-23 14:46:47,014 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.4761904761904763) internal successors, (146), 42 states have internal predecessors, (146), 0 states have call successors, (0), 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 [2023-11-23 14:46:47,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:47,015 INFO L225 Difference]: With dead ends: 264 [2023-11-23 14:46:47,015 INFO L226 Difference]: Without dead ends: 205 [2023-11-23 14:46:47,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1958 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=913, Invalid=6059, Unknown=0, NotChecked=0, Total=6972 [2023-11-23 14:46:47,017 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 427 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:47,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 340 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 14:46:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-11-23 14:46:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 159. [2023-11-23 14:46:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.1329113924050633) internal successors, (179), 158 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:47,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 179 transitions. [2023-11-23 14:46:47,054 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 179 transitions. Word has length 56 [2023-11-23 14:46:47,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:47,054 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 179 transitions. [2023-11-23 14:46:47,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.4761904761904763) internal successors, (146), 42 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:47,054 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 179 transitions. [2023-11-23 14:46:47,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-23 14:46:47,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:47,058 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:46:47,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 14:46:47,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 14:46:47,270 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:46:47,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash 400946356, now seen corresponding path program 8 times [2023-11-23 14:46:47,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:47,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328072654] [2023-11-23 14:46:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:47,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 1 proven. 119 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 14:46:47,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:47,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328072654] [2023-11-23 14:46:47,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328072654] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:46:47,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133738176] [2023-11-23 14:46:47,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 14:46:47,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:47,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:46:47,646 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) [2023-11-23 14:46:47,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 14:46:47,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 14:46:47,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 14:46:47,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-23 14:46:47,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:46:47,853 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 13 treesize of output 9 [2023-11-23 14:46:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 7 proven. 113 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 14:46:48,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:46:48,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-11-23 14:46:48,154 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 [2023-11-23 14:46:48,281 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 3 proven. 117 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 14:46:48,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133738176] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 14:46:48,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 14:46:48,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 36 [2023-11-23 14:46:48,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086431706] [2023-11-23 14:46:48,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 14:46:48,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-23 14:46:48,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:48,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-23 14:46:48,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1120, Unknown=0, NotChecked=0, Total=1260 [2023-11-23 14:46:48,283 INFO L87 Difference]: Start difference. First operand 159 states and 179 transitions. Second operand has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 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) [2023-11-23 14:46:49,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:49,404 INFO L93 Difference]: Finished difference Result 220 states and 244 transitions. [2023-11-23 14:46:49,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-23 14:46:49,405 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 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 61 [2023-11-23 14:46:49,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:49,405 INFO L225 Difference]: With dead ends: 220 [2023-11-23 14:46:49,405 INFO L226 Difference]: Without dead ends: 218 [2023-11-23 14:46:49,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=665, Invalid=4885, Unknown=0, NotChecked=0, Total=5550 [2023-11-23 14:46:49,407 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 133 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:49,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 257 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 14:46:49,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-11-23 14:46:49,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 154. [2023-11-23 14:46:49,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.1372549019607843) internal successors, (174), 153 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:49,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 174 transitions. [2023-11-23 14:46:49,441 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 174 transitions. Word has length 61 [2023-11-23 14:46:49,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:49,441 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 174 transitions. [2023-11-23 14:46:49,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 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) [2023-11-23 14:46:49,441 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 174 transitions. [2023-11-23 14:46:49,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 14:46:49,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:49,442 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:46:49,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 14:46:49,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 14:46:49,654 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:46:49,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:49,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1478967626, now seen corresponding path program 9 times [2023-11-23 14:46:49,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:49,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369078436] [2023-11-23 14:46:49,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:49,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 73 proven. 64 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 14:46:49,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:49,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369078436] [2023-11-23 14:46:49,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369078436] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:46:49,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912194410] [2023-11-23 14:46:49,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 14:46:49,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:49,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:46:49,953 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) [2023-11-23 14:46:49,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 14:46:50,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-23 14:46:50,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 14:46:50,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 14:46:50,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:46:50,557 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 99 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 14:46:50,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:46:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 99 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 14:46:50,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912194410] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 14:46:50,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 14:46:50,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 39 [2023-11-23 14:46:50,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104970333] [2023-11-23 14:46:50,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 14:46:50,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-23 14:46:50,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:50,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-23 14:46:50,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1115, Unknown=0, NotChecked=0, Total=1482 [2023-11-23 14:46:50,843 INFO L87 Difference]: Start difference. First operand 154 states and 174 transitions. Second operand has 39 states, 39 states have (on average 4.0256410256410255) internal successors, (157), 39 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:51,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:51,120 INFO L93 Difference]: Finished difference Result 177 states and 199 transitions. [2023-11-23 14:46:51,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 14:46:51,120 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.0256410256410255) internal successors, (157), 39 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-23 14:46:51,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:51,124 INFO L225 Difference]: With dead ends: 177 [2023-11-23 14:46:51,124 INFO L226 Difference]: Without dead ends: 136 [2023-11-23 14:46:51,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2023-11-23 14:46:51,141 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 122 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:51,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 212 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 14:46:51,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-23 14:46:51,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-11-23 14:46:51,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.1407407407407408) internal successors, (154), 135 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:51,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 154 transitions. [2023-11-23 14:46:51,170 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 154 transitions. Word has length 66 [2023-11-23 14:46:51,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:51,170 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 154 transitions. [2023-11-23 14:46:51,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.0256410256410255) internal successors, (157), 39 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:51,170 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 154 transitions. [2023-11-23 14:46:51,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-23 14:46:51,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:51,171 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:46:51,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 14:46:51,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 14:46:51,384 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:46:51,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:51,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1711112085, now seen corresponding path program 10 times [2023-11-23 14:46:51,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:51,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939630785] [2023-11-23 14:46:51,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:51,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 2 proven. 203 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 14:46:51,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:51,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939630785] [2023-11-23 14:46:51,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939630785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:46:51,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173151433] [2023-11-23 14:46:51,996 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 14:46:51,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:51,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:46:51,997 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) [2023-11-23 14:46:52,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 14:46:52,069 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 14:46:52,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 14:46:52,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-23 14:46:52,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:46:52,233 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 [2023-11-23 14:46:52,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:52,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-11-23 14:46:52,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:52,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:52,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:52,441 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 14:46:52,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2023-11-23 14:46:52,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:52,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:52,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:52,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:52,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:52,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:52,595 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 14:46:52,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 43 [2023-11-23 14:46:53,518 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 7 proven. 198 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 14:46:53,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:46:53,801 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 17 [2023-11-23 14:46:53,803 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 [2023-11-23 14:46:53,897 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 14:46:53,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173151433] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 14:46:53,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 14:46:53,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 22] total 51 [2023-11-23 14:46:53,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521821878] [2023-11-23 14:46:53,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 14:46:53,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-23 14:46:53,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:53,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-23 14:46:53,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=2286, Unknown=0, NotChecked=0, Total=2550 [2023-11-23 14:46:53,899 INFO L87 Difference]: Start difference. First operand 136 states and 154 transitions. Second operand has 51 states, 51 states have (on average 3.0784313725490198) internal successors, (157), 51 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:56,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:56,705 INFO L93 Difference]: Finished difference Result 395 states and 448 transitions. [2023-11-23 14:46:56,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-11-23 14:46:56,706 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.0784313725490198) internal successors, (157), 51 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-11-23 14:46:56,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:56,706 INFO L225 Difference]: With dead ends: 395 [2023-11-23 14:46:56,707 INFO L226 Difference]: Without dead ends: 284 [2023-11-23 14:46:56,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 114 SyntacticMatches, 6 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4942 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1350, Invalid=13902, Unknown=0, NotChecked=0, Total=15252 [2023-11-23 14:46:56,708 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 254 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:56,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 330 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 14:46:56,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-11-23 14:46:56,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 141. [2023-11-23 14:46:56,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.1357142857142857) internal successors, (159), 140 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:56,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 159 transitions. [2023-11-23 14:46:56,740 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 159 transitions. Word has length 73 [2023-11-23 14:46:56,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:56,741 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 159 transitions. [2023-11-23 14:46:56,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.0784313725490198) internal successors, (157), 51 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:56,741 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 159 transitions. [2023-11-23 14:46:56,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 14:46:56,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:56,742 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 8, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:46:56,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 14:46:56,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 14:46:56,951 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:46:56,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:56,952 INFO L85 PathProgramCache]: Analyzing trace with hash -989568542, now seen corresponding path program 11 times [2023-11-23 14:46:56,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:56,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428083095] [2023-11-23 14:46:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:56,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 18 proven. 264 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 14:46:58,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:58,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428083095] [2023-11-23 14:46:58,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428083095] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:46:58,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817587540] [2023-11-23 14:46:58,240 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 14:46:58,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:58,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:46:58,242 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) [2023-11-23 14:46:58,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 14:46:58,370 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-11-23 14:46:58,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 14:46:58,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-23 14:46:58,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:46:58,509 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 [2023-11-23 14:46:58,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:58,579 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 23 treesize of output 22 [2023-11-23 14:46:58,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:58,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:58,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:58,684 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 14:46:58,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2023-11-23 14:46:58,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:58,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:58,856 INFO L349 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2023-11-23 14:46:58,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 48 [2023-11-23 14:46:58,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:58,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:58,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:58,967 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 14:46:58,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2023-11-23 14:46:59,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:59,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:59,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:59,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:59,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:59,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:59,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 14:46:59,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 43 [2023-11-23 14:46:59,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:59,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:59,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:59,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:59,413 INFO L349 Elim1Store]: treesize reduction 52, result has 49.5 percent of original size [2023-11-23 14:46:59,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 80 [2023-11-23 14:47:00,470 INFO L349 Elim1Store]: treesize reduction 266, result has 63.5 percent of original size [2023-11-23 14:47:00,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 203 treesize of output 587 Killed by 15