./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/heap-data/calendar.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 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/heap-data/calendar.i -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 fe08ef78ee5c945bc38e9e915e26405aefe9ffb2d4911c91347e07e6a879dcd5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 19:02:27,891 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 19:02:27,948 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 19:02:27,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 19:02:27,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 19:02:27,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 19:02:27,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 19:02:27,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 19:02:27,970 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 19:02:27,973 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 19:02:27,973 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 19:02:27,974 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 19:02:27,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 19:02:27,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 19:02:27,974 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 19:02:27,975 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 19:02:27,975 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 19:02:27,975 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 19:02:27,975 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 19:02:27,975 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 19:02:27,976 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 19:02:27,976 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 19:02:27,976 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 19:02:27,976 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 19:02:27,977 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 19:02:27,977 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 19:02:27,977 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 19:02:27,977 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 19:02:27,977 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 19:02:27,978 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 19:02:27,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 19:02:27,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 19:02:27,978 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 19:02:27,978 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 19:02:27,979 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 19:02:27,979 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 19:02:27,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 19:02:27,979 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 19:02:27,979 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 19:02:27,980 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 19:02:27,980 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 19:02:27,980 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 19:02:27,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe08ef78ee5c945bc38e9e915e26405aefe9ffb2d4911c91347e07e6a879dcd5 [2023-11-22 19:02:28,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 19:02:28,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 19:02:28,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 19:02:28,219 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 19:02:28,220 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 19:02:28,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/calendar.i [2023-11-22 19:02:29,249 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 19:02:29,435 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 19:02:29,441 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/calendar.i [2023-11-22 19:02:29,450 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad98a44e6/9b757bbc20f940f68689cfc1f361f901/FLAG82119c66f [2023-11-22 19:02:29,460 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad98a44e6/9b757bbc20f940f68689cfc1f361f901 [2023-11-22 19:02:29,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 19:02:29,463 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 19:02:29,464 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 19:02:29,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 19:02:29,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 19:02:29,468 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:02:29" (1/1) ... [2023-11-22 19:02:29,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694a9230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:02:29, skipping insertion in model container [2023-11-22 19:02:29,469 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:02:29" (1/1) ... [2023-11-22 19:02:29,508 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 19:02:29,713 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-data/calendar.i[23742,23755] [2023-11-22 19:02:29,719 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 19:02:29,726 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 19:02:29,763 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-data/calendar.i[23742,23755] [2023-11-22 19:02:29,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 19:02:29,792 INFO L206 MainTranslator]: Completed translation [2023-11-22 19:02:29,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:02:29 WrapperNode [2023-11-22 19:02:29,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 19:02:29,796 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 19:02:29,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 19:02:29,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 19:02:29,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:02:29" (1/1) ... [2023-11-22 19:02:29,823 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:02:29" (1/1) ... [2023-11-22 19:02:29,836 INFO L138 Inliner]: procedures = 121, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 74 [2023-11-22 19:02:29,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 19:02:29,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 19:02:29,842 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 19:02:29,842 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 19:02:29,850 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:02:29" (1/1) ... [2023-11-22 19:02:29,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:02:29" (1/1) ... [2023-11-22 19:02:29,858 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:02:29" (1/1) ... [2023-11-22 19:02:29,868 INFO L189 HeapSplitter]: Split 10 memory accesses to 2 slices as follows [2, 8] [2023-11-22 19:02:29,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:02:29" (1/1) ... [2023-11-22 19:02:29,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:02:29" (1/1) ... [2023-11-22 19:02:29,877 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:02:29" (1/1) ... [2023-11-22 19:02:29,879 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:02:29" (1/1) ... [2023-11-22 19:02:29,880 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:02:29" (1/1) ... [2023-11-22 19:02:29,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:02:29" (1/1) ... [2023-11-22 19:02:29,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 19:02:29,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 19:02:29,884 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 19:02:29,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 19:02:29,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:02:29" (1/1) ... [2023-11-22 19:02:29,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 19:02:29,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:02:29,917 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) [2023-11-22 19:02:29,925 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 [2023-11-22 19:02:29,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-22 19:02:29,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-22 19:02:29,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-22 19:02:29,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-22 19:02:29,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-22 19:02:29,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 19:02:29,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-22 19:02:29,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-22 19:02:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-22 19:02:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-22 19:02:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 19:02:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 19:02:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 19:02:29,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 19:02:30,079 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 19:02:30,080 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 19:02:30,244 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 19:02:30,257 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 19:02:30,258 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-22 19:02:30,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:02:30 BoogieIcfgContainer [2023-11-22 19:02:30,259 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 19:02:30,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 19:02:30,261 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 19:02:30,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 19:02:30,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:02:29" (1/3) ... [2023-11-22 19:02:30,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d808c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:02:30, skipping insertion in model container [2023-11-22 19:02:30,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:02:29" (2/3) ... [2023-11-22 19:02:30,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d808c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:02:30, skipping insertion in model container [2023-11-22 19:02:30,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:02:30" (3/3) ... [2023-11-22 19:02:30,279 INFO L112 eAbstractionObserver]: Analyzing ICFG calendar.i [2023-11-22 19:02:30,292 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 19:02:30,292 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 19:02:30,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 19:02:30,334 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;@75d737a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 19:02:30,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 19:02:30,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:30,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-22 19:02:30,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:02:30,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:02:30,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:02:30,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:02:30,349 INFO L85 PathProgramCache]: Analyzing trace with hash -647829618, now seen corresponding path program 1 times [2023-11-22 19:02:30,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:02:30,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453704843] [2023-11-22 19:02:30,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:02:30,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:02:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:02:30,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:30,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:02:30,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453704843] [2023-11-22 19:02:30,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453704843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:02:30,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:02:30,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 19:02:30,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785872127] [2023-11-22 19:02:30,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:02:30,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 19:02:30,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:02:30,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 19:02:30,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 19:02:30,526 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:30,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:02:30,545 INFO L93 Difference]: Finished difference Result 32 states and 46 transitions. [2023-11-22 19:02:30,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 19:02:30,548 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2023-11-22 19:02:30,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:02:30,554 INFO L225 Difference]: With dead ends: 32 [2023-11-22 19:02:30,554 INFO L226 Difference]: Without dead ends: 17 [2023-11-22 19:02:30,556 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 [2023-11-22 19:02:30,560 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:02:30,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:02:30,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-22 19:02:30,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-22 19:02:30,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:30,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2023-11-22 19:02:30,627 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 9 [2023-11-22 19:02:30,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:02:30,632 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2023-11-22 19:02:30,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:30,633 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2023-11-22 19:02:30,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-22 19:02:30,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:02:30,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:02:30,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 19:02:30,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:02:30,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:02:30,635 INFO L85 PathProgramCache]: Analyzing trace with hash 837082589, now seen corresponding path program 1 times [2023-11-22 19:02:30,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:02:30,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695356625] [2023-11-22 19:02:30,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:02:30,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:02:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:02:30,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:30,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:02:30,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695356625] [2023-11-22 19:02:30,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695356625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:02:30,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:02:30,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 19:02:30,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074900191] [2023-11-22 19:02:30,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:02:30,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 19:02:30,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:02:30,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 19:02:30,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 19:02:30,770 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:30,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:02:30,811 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2023-11-22 19:02:30,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 19:02:30,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2023-11-22 19:02:30,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:02:30,813 INFO L225 Difference]: With dead ends: 34 [2023-11-22 19:02:30,813 INFO L226 Difference]: Without dead ends: 22 [2023-11-22 19:02:30,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 19:02:30,814 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:02:30,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 55 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:02:30,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-22 19:02:30,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-22 19:02:30,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:30,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2023-11-22 19:02:30,818 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 11 [2023-11-22 19:02:30,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:02:30,818 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-11-22 19:02:30,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:30,819 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-11-22 19:02:30,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-22 19:02:30,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:02:30,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:02:30,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 19:02:30,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:02:30,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:02:30,820 INFO L85 PathProgramCache]: Analyzing trace with hash 922978179, now seen corresponding path program 1 times [2023-11-22 19:02:30,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:02:30,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181542635] [2023-11-22 19:02:30,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:02:30,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:02:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:02:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:31,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:02:31,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181542635] [2023-11-22 19:02:31,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181542635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:02:31,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:02:31,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 19:02:31,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423679652] [2023-11-22 19:02:31,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:02:31,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 19:02:31,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:02:31,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 19:02:31,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-22 19:02:31,191 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:31,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:02:31,658 INFO L93 Difference]: Finished difference Result 77 states and 104 transitions. [2023-11-22 19:02:31,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-22 19:02:31,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-22 19:02:31,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:02:31,661 INFO L225 Difference]: With dead ends: 77 [2023-11-22 19:02:31,662 INFO L226 Difference]: Without dead ends: 67 [2023-11-22 19:02:31,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2023-11-22 19:02:31,668 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 85 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:02:31,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 152 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:02:31,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-22 19:02:31,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 26. [2023-11-22 19:02:31,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:31,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2023-11-22 19:02:31,683 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 16 [2023-11-22 19:02:31,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:02:31,683 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2023-11-22 19:02:31,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:31,683 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2023-11-22 19:02:31,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-22 19:02:31,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:02:31,684 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:02:31,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 19:02:31,684 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:02:31,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:02:31,685 INFO L85 PathProgramCache]: Analyzing trace with hash -2074594487, now seen corresponding path program 1 times [2023-11-22 19:02:31,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:02:31,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650766539] [2023-11-22 19:02:31,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:02:31,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:02:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:02:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 19:02:31,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:02:31,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650766539] [2023-11-22 19:02:31,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650766539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:02:31,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:02:31,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 19:02:31,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585007606] [2023-11-22 19:02:31,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:02:31,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 19:02:31,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:02:31,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 19:02:31,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 19:02:31,803 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:31,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:02:31,845 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2023-11-22 19:02:31,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 19:02:31,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-22 19:02:31,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:02:31,847 INFO L225 Difference]: With dead ends: 49 [2023-11-22 19:02:31,847 INFO L226 Difference]: Without dead ends: 37 [2023-11-22 19:02:31,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:02:31,856 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:02:31,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 38 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:02:31,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-22 19:02:31,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2023-11-22 19:02:31,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:31,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2023-11-22 19:02:31,864 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 18 [2023-11-22 19:02:31,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:02:31,864 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2023-11-22 19:02:31,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:31,865 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2023-11-22 19:02:31,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-22 19:02:31,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:02:31,865 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:02:31,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 19:02:31,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:02:31,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:02:31,866 INFO L85 PathProgramCache]: Analyzing trace with hash -2074534905, now seen corresponding path program 1 times [2023-11-22 19:02:31,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:02:31,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261209143] [2023-11-22 19:02:31,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:02:31,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:02:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:02:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 19:02:31,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:02:31,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261209143] [2023-11-22 19:02:31,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261209143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:02:31,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:02:31,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 19:02:31,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043567413] [2023-11-22 19:02:31,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:02:31,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 19:02:31,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:02:31,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 19:02:31,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 19:02:31,926 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:31,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:02:31,939 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2023-11-22 19:02:31,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 19:02:31,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-22 19:02:31,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:02:31,940 INFO L225 Difference]: With dead ends: 33 [2023-11-22 19:02:31,940 INFO L226 Difference]: Without dead ends: 31 [2023-11-22 19:02:31,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 19:02:31,941 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:02:31,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 50 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:02:31,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-22 19:02:31,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-22 19:02:31,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2023-11-22 19:02:31,944 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 18 [2023-11-22 19:02:31,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:02:31,944 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2023-11-22 19:02:31,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:31,945 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2023-11-22 19:02:31,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-22 19:02:31,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:02:31,945 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:02:31,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 19:02:31,945 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:02:31,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:02:31,946 INFO L85 PathProgramCache]: Analyzing trace with hash -299587125, now seen corresponding path program 1 times [2023-11-22 19:02:31,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:02:31,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133049675] [2023-11-22 19:02:31,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:02:31,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:02:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:02:32,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:32,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:02:32,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133049675] [2023-11-22 19:02:32,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133049675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:02:32,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:02:32,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 19:02:32,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693125178] [2023-11-22 19:02:32,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:02:32,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 19:02:32,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:02:32,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 19:02:32,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:02:32,087 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:32,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:02:32,189 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2023-11-22 19:02:32,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 19:02:32,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 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 [2023-11-22 19:02:32,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:02:32,194 INFO L225 Difference]: With dead ends: 42 [2023-11-22 19:02:32,194 INFO L226 Difference]: Without dead ends: 40 [2023-11-22 19:02:32,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-22 19:02:32,195 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:02:32,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 78 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:02:32,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-22 19:02:32,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2023-11-22 19:02:32,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2023-11-22 19:02:32,202 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 18 [2023-11-22 19:02:32,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:02:32,203 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2023-11-22 19:02:32,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:32,203 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2023-11-22 19:02:32,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-22 19:02:32,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:02:32,203 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:02:32,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-22 19:02:32,204 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:02:32,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:02:32,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1538754257, now seen corresponding path program 1 times [2023-11-22 19:02:32,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:02:32,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009968854] [2023-11-22 19:02:32,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:02:32,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:02:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:02:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:32,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:02:32,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009968854] [2023-11-22 19:02:32,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009968854] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:02:32,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147033769] [2023-11-22 19:02:32,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:02:32,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:02:32,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:02:32,397 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) [2023-11-22 19:02:32,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 19:02:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:02:32,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-22 19:02:32,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:02:32,542 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 [2023-11-22 19:02:32,547 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 [2023-11-22 19:02:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:32,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:02:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:32,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147033769] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:02:32,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:02:32,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2023-11-22 19:02:32,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157718812] [2023-11-22 19:02:32,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:02:32,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 19:02:32,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:02:32,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 19:02:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 19:02:32,734 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:32,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:02:32,827 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2023-11-22 19:02:32,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 19:02:32,828 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 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 [2023-11-22 19:02:32,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:02:32,829 INFO L225 Difference]: With dead ends: 67 [2023-11-22 19:02:32,829 INFO L226 Difference]: Without dead ends: 39 [2023-11-22 19:02:32,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-22 19:02:32,830 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 34 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:02:32,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 118 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:02:32,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-22 19:02:32,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-22 19:02:32,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 38 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:32,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2023-11-22 19:02:32,834 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 24 [2023-11-22 19:02:32,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:02:32,834 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2023-11-22 19:02:32,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:32,835 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2023-11-22 19:02:32,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-22 19:02:32,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:02:32,835 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:02:32,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 19:02:33,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:02:33,045 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:02:33,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:02:33,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1070935369, now seen corresponding path program 2 times [2023-11-22 19:02:33,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:02:33,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424982566] [2023-11-22 19:02:33,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:02:33,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:02:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:02:33,465 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:33,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:02:33,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424982566] [2023-11-22 19:02:33,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424982566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:02:33,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778376803] [2023-11-22 19:02:33,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 19:02:33,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:02:33,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:02:33,467 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) [2023-11-22 19:02:33,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 19:02:33,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 19:02:33,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 19:02:33,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-22 19:02:33,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:02:33,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 1 [2023-11-22 19:02:33,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 19:02:33,621 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-22 19:02:33,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-22 19:02:33,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-22 19:02:33,630 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 46 treesize of output 35 [2023-11-22 19:02:33,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-22 19:02:33,787 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 53 treesize of output 37 [2023-11-22 19:02:33,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 37 treesize of output 25 [2023-11-22 19:02:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:33,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:02:34,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:34,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778376803] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:02:34,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:02:34,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 22 [2023-11-22 19:02:34,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235361261] [2023-11-22 19:02:34,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:02:34,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-22 19:02:34,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:02:34,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-22 19:02:34,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-11-22 19:02:34,040 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:35,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:02:35,538 INFO L93 Difference]: Finished difference Result 135 states and 164 transitions. [2023-11-22 19:02:35,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-22 19:02:35,539 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 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 29 [2023-11-22 19:02:35,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:02:35,540 INFO L225 Difference]: With dead ends: 135 [2023-11-22 19:02:35,540 INFO L226 Difference]: Without dead ends: 120 [2023-11-22 19:02:35,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=818, Invalid=2152, Unknown=0, NotChecked=0, Total=2970 [2023-11-22 19:02:35,542 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 305 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 19:02:35,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 440 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 19:02:35,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-22 19:02:35,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 47. [2023-11-22 19:02:35,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:35,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2023-11-22 19:02:35,578 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 29 [2023-11-22 19:02:35,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:02:35,579 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2023-11-22 19:02:35,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:35,579 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2023-11-22 19:02:35,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-22 19:02:35,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:02:35,580 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:02:35,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 19:02:35,791 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,SelfDestructingSolverStorable7 [2023-11-22 19:02:35,792 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:02:35,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:02:35,793 INFO L85 PathProgramCache]: Analyzing trace with hash 153351697, now seen corresponding path program 1 times [2023-11-22 19:02:35,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:02:35,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619399128] [2023-11-22 19:02:35,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:02:35,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:02:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:02:36,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:36,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:02:36,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619399128] [2023-11-22 19:02:36,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619399128] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:02:36,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238814303] [2023-11-22 19:02:36,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:02:36,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:02:36,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:02:36,180 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) [2023-11-22 19:02:36,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 19:02:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:02:36,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-22 19:02:36,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:02:36,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 19:02:36,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 1 [2023-11-22 19:02:36,360 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-22 19:02:36,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-22 19:02:36,365 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 63 treesize of output 46 [2023-11-22 19:02:36,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-22 19:02:36,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-22 19:02:36,493 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 70 treesize of output 50 [2023-11-22 19:02:36,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 50 treesize of output 34 [2023-11-22 19:02:36,563 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:36,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:02:36,680 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_17| Int) (v_ArrVal_267 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int#1| |v_ULTIMATE.start_main_~l~0#1.base_17| v_ArrVal_267) |c_ULTIMATE.start_main_~l~0#1.base|))) (or (< 0 (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_17|) 0)) (not (= (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 8)) 2))))) is different from false [2023-11-22 19:02:36,716 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:02:36,718 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 [2023-11-22 19:02:36,727 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:02:36,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:02:36,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:02:36,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 8 [2023-11-22 19:02:36,733 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:02:36,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2023-11-22 19:02:36,748 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-11-22 19:02:36,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238814303] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:02:36,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:02:36,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 22 [2023-11-22 19:02:36,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309096598] [2023-11-22 19:02:36,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:02:36,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-22 19:02:36,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:02:36,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-22 19:02:36,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=357, Unknown=1, NotChecked=38, Total=462 [2023-11-22 19:02:36,750 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand has 22 states, 22 states have (on average 3.5) internal successors, (77), 22 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:38,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:02:38,550 INFO L93 Difference]: Finished difference Result 116 states and 141 transitions. [2023-11-22 19:02:38,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-22 19:02:38,551 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.5) internal successors, (77), 22 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-22 19:02:38,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:02:38,551 INFO L225 Difference]: With dead ends: 116 [2023-11-22 19:02:38,551 INFO L226 Difference]: Without dead ends: 114 [2023-11-22 19:02:38,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=818, Invalid=2265, Unknown=1, NotChecked=108, Total=3192 [2023-11-22 19:02:38,553 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 243 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 19:02:38,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 399 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 342 Invalid, 0 Unknown, 112 Unchecked, 0.3s Time] [2023-11-22 19:02:38,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-22 19:02:38,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 50. [2023-11-22 19:02:38,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 49 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:38,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2023-11-22 19:02:38,557 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 31 [2023-11-22 19:02:38,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:02:38,557 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2023-11-22 19:02:38,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.5) internal successors, (77), 22 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:38,558 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2023-11-22 19:02:38,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-22 19:02:38,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:02:38,559 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-22 19:02:38,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 19:02:38,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:02:38,769 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:02:38,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:02:38,769 INFO L85 PathProgramCache]: Analyzing trace with hash 345176309, now seen corresponding path program 3 times [2023-11-22 19:02:38,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:02:38,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453142507] [2023-11-22 19:02:38,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:02:38,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:02:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:02:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:39,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:02:39,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453142507] [2023-11-22 19:02:39,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453142507] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:02:39,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117524999] [2023-11-22 19:02:39,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 19:02:39,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:02:39,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:02:39,134 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) [2023-11-22 19:02:39,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 19:02:39,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-22 19:02:39,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 19:02:39,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-22 19:02:39,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:02:39,250 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 [2023-11-22 19:02:39,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 19:02:39,259 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 [2023-11-22 19:02:39,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-11-22 19:02:39,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-11-22 19:02:39,318 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-22 19:02:39,318 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 20 treesize of output 23 [2023-11-22 19:02:39,330 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-22 19:02:39,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-22 19:02:39,336 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 20 treesize of output 15 [2023-11-22 19:02:39,539 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:39,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:02:39,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:02:39,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 27 treesize of output 31 [2023-11-22 19:02:39,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:02:39,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 24 treesize of output 28 [2023-11-22 19:02:39,632 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 6 treesize of output 4 [2023-11-22 19:02:39,644 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 6 treesize of output 4 [2023-11-22 19:02:39,757 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:02:39,757 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2023-11-22 19:02:39,760 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:02:39,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2023-11-22 19:02:39,767 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:02:39,767 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-11-22 19:02:39,769 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:02:39,770 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 16 treesize of output 8 [2023-11-22 19:02:39,779 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:39,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117524999] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:02:39,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:02:39,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 15 [2023-11-22 19:02:39,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779944694] [2023-11-22 19:02:39,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:02:39,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-22 19:02:39,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:02:39,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-22 19:02:39,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-11-22 19:02:39,781 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 16 states, 16 states have (on average 4.625) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:40,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:02:40,019 INFO L93 Difference]: Finished difference Result 101 states and 126 transitions. [2023-11-22 19:02:40,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 19:02:40,019 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 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 37 [2023-11-22 19:02:40,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:02:40,020 INFO L225 Difference]: With dead ends: 101 [2023-11-22 19:02:40,020 INFO L226 Difference]: Without dead ends: 60 [2023-11-22 19:02:40,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-11-22 19:02:40,021 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 44 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:02:40,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 338 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:02:40,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-22 19:02:40,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2023-11-22 19:02:40,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 54 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:40,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2023-11-22 19:02:40,025 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 37 [2023-11-22 19:02:40,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:02:40,025 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2023-11-22 19:02:40,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:40,025 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2023-11-22 19:02:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-22 19:02:40,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:02:40,026 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-22 19:02:40,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 19:02:40,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:02:40,226 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:02:40,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:02:40,227 INFO L85 PathProgramCache]: Analyzing trace with hash 2127642395, now seen corresponding path program 4 times [2023-11-22 19:02:40,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:02:40,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909503730] [2023-11-22 19:02:40,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:02:40,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:02:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:02:40,914 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:40,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:02:40,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909503730] [2023-11-22 19:02:40,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909503730] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:02:40,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018688179] [2023-11-22 19:02:40,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-22 19:02:40,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:02:40,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:02:40,916 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) [2023-11-22 19:02:40,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 19:02:41,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-22 19:02:41,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 19:02:41,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-22 19:02:41,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:02:41,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 19:02:41,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2023-11-22 19:02:41,093 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-22 19:02:41,093 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 34 treesize of output 31 [2023-11-22 19:02:41,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-22 19:02:41,104 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 [2023-11-22 19:02:41,118 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-11-22 19:02:41,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-11-22 19:02:41,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-11-22 19:02:41,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:02:41,218 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 71 treesize of output 48 [2023-11-22 19:02:41,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:02:41,227 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2023-11-22 19:02:41,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2023-11-22 19:02:41,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 40 [2023-11-22 19:02:41,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:02:41,253 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 21 treesize of output 23 [2023-11-22 19:02:41,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 19:02:41,987 INFO L349 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-11-22 19:02:41,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 167 treesize of output 161 [2023-11-22 19:02:42,043 INFO L349 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-11-22 19:02:42,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 103 treesize of output 139 [2023-11-22 19:02:42,792 INFO L349 Elim1Store]: treesize reduction 144, result has 21.3 percent of original size [2023-11-22 19:02:42,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 94 treesize of output 90 [2023-11-22 19:02:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:42,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:02:43,133 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:02:43,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 67 treesize of output 67 [2023-11-22 19:02:43,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:02:43,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 61 treesize of output 61 [2023-11-22 19:02:43,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:02:43,336 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 107 [2023-11-22 19:02:43,345 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:02:43,347 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 101 treesize of output 83 [2023-11-22 19:02:43,350 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 122 treesize of output 100 [2023-11-22 19:02:43,356 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:02:43,357 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-11-22 19:02:43,360 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:02:43,364 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 49 treesize of output 37 [2023-11-22 19:02:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:43,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018688179] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:02:43,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:02:43,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 33 [2023-11-22 19:02:43,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993943316] [2023-11-22 19:02:43,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:02:43,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-22 19:02:43,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:02:43,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-22 19:02:43,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=949, Unknown=0, NotChecked=0, Total=1056 [2023-11-22 19:02:43,512 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand has 33 states, 33 states have (on average 3.303030303030303) internal successors, (109), 33 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) [2023-11-22 19:02:51,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:02:51,384 INFO L93 Difference]: Finished difference Result 226 states and 271 transitions. [2023-11-22 19:02:51,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-22 19:02:51,384 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.303030303030303) internal successors, (109), 33 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 42 [2023-11-22 19:02:51,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:02:51,385 INFO L225 Difference]: With dead ends: 226 [2023-11-22 19:02:51,385 INFO L226 Difference]: Without dead ends: 211 [2023-11-22 19:02:51,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2588 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2448, Invalid=8058, Unknown=0, NotChecked=0, Total=10506 [2023-11-22 19:02:51,388 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 986 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 19:02:51,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 714 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 19:02:51,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-22 19:02:51,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 63. [2023-11-22 19:02:51,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 62 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:51,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2023-11-22 19:02:51,395 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 42 [2023-11-22 19:02:51,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:02:51,395 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2023-11-22 19:02:51,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.303030303030303) internal successors, (109), 33 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) [2023-11-22 19:02:51,395 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2023-11-22 19:02:51,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-22 19:02:51,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:02:51,396 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:02:51,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 19:02:51,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-22 19:02:51,607 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:02:51,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:02:51,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2036521827, now seen corresponding path program 2 times [2023-11-22 19:02:51,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:02:51,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622444599] [2023-11-22 19:02:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:02:51,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:02:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:02:52,301 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:52,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:02:52,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622444599] [2023-11-22 19:02:52,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622444599] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:02:52,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835681801] [2023-11-22 19:02:52,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 19:02:52,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:02:52,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:02:52,303 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) [2023-11-22 19:02:52,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 19:02:52,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 19:02:52,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 19:02:52,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-22 19:02:52,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:02:52,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2023-11-22 19:02:52,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 19:02:52,495 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 [2023-11-22 19:02:52,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-22 19:02:52,506 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-22 19:02:52,507 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 45 treesize of output 36 [2023-11-22 19:02:52,527 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-11-22 19:02:52,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-11-22 19:02:52,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-11-22 19:02:52,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:02:52,620 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 86 treesize of output 57 [2023-11-22 19:02:52,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:02:52,627 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2023-11-22 19:02:52,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2023-11-22 19:02:52,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 32 [2023-11-22 19:02:52,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:02:52,639 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 21 treesize of output 23 [2023-11-22 19:02:52,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 19:02:53,202 INFO L349 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-11-22 19:02:53,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 179 treesize of output 149 [2023-11-22 19:02:53,255 INFO L349 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-11-22 19:02:53,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 127 [2023-11-22 19:02:53,841 INFO L349 Elim1Store]: treesize reduction 28, result has 20.0 percent of original size [2023-11-22 19:02:53,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 46 [2023-11-22 19:02:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 11 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:53,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:02:54,017 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:02:54,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 66 treesize of output 66 [2023-11-22 19:02:54,021 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:02:54,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 60 treesize of output 60 [2023-11-22 19:02:54,035 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_13 (Array Int Int)) (v_arrayElimArr_14 (Array Int Int)) (v_ArrVal_594 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_30| Int)) (let ((.cse0 (select (store |c_#memory_int#1| |v_ULTIMATE.start_main_~l~0#1.base_30| v_ArrVal_594) (select (select (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_main_~l~0#1.base_30| v_arrayElimArr_13) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_main_~l~0#1.base_30| v_arrayElimArr_14) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_14 0))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_30|) 0)) (< 0 (select .cse0 (+ 4 .cse1))) (not (= 2 (select .cse0 (+ 8 .cse1)))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_13 0)))))) is different from false [2023-11-22 19:02:54,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:02:54,095 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 106 [2023-11-22 19:02:54,097 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:02:54,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 82 [2023-11-22 19:02:54,101 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 97 treesize of output 77 [2023-11-22 19:02:54,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:02:54,106 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 54 [2023-11-22 19:02:54,107 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:02:54,109 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 48 treesize of output 36 [2023-11-22 19:02:54,195 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:02:54,196 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:02:54,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2023-11-22 19:02:54,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:02:54,204 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:02:54,206 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:02:54,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 6 [2023-11-22 19:02:54,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2023-11-22 19:02:54,225 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 11 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2023-11-22 19:02:54,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835681801] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:02:54,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:02:54,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2023-11-22 19:02:54,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776651608] [2023-11-22 19:02:54,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:02:54,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-22 19:02:54,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:02:54,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-22 19:02:54,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=678, Unknown=2, NotChecked=52, Total=812 [2023-11-22 19:02:54,228 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 29 states, 29 states have (on average 4.0344827586206895) internal successors, (117), 29 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:58,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:02:58,958 INFO L93 Difference]: Finished difference Result 149 states and 180 transitions. [2023-11-22 19:02:58,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-22 19:02:58,958 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.0344827586206895) internal successors, (117), 29 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-11-22 19:02:58,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:02:58,962 INFO L225 Difference]: With dead ends: 149 [2023-11-22 19:02:58,962 INFO L226 Difference]: Without dead ends: 147 [2023-11-22 19:02:58,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1369, Invalid=4485, Unknown=2, NotChecked=150, Total=6006 [2023-11-22 19:02:58,965 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 366 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 19:02:58,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 639 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 667 Invalid, 0 Unknown, 151 Unchecked, 0.6s Time] [2023-11-22 19:02:58,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-22 19:02:58,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 66. [2023-11-22 19:02:58,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 65 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:58,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2023-11-22 19:02:58,977 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 44 [2023-11-22 19:02:58,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:02:58,977 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2023-11-22 19:02:58,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.0344827586206895) internal successors, (117), 29 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:02:58,977 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2023-11-22 19:02:58,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-22 19:02:58,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:02:58,978 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-11-22 19:02:58,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-22 19:02:59,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:02:59,183 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:02:59,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:02:59,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1022289721, now seen corresponding path program 5 times [2023-11-22 19:02:59,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:02:59,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472180692] [2023-11-22 19:02:59,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:02:59,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:02:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:02:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:02:59,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:02:59,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472180692] [2023-11-22 19:02:59,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472180692] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:02:59,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023908623] [2023-11-22 19:02:59,739 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-22 19:02:59,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:02:59,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:02:59,740 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) [2023-11-22 19:02:59,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 19:03:00,147 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-22 19:03:00,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 19:03:00,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-22 19:03:00,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:03:00,166 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 [2023-11-22 19:03:00,169 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 [2023-11-22 19:03:00,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 19:03:00,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-11-22 19:03:00,230 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2023-11-22 19:03:00,230 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 21 treesize of output 31 [2023-11-22 19:03:00,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 19:03:00,252 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-11-22 19:03:00,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-11-22 19:03:00,261 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 20 treesize of output 15 [2023-11-22 19:03:00,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-11-22 19:03:00,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:00,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:00,352 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 0 case distinctions, treesize of input 36 treesize of output 41 [2023-11-22 19:03:00,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 19:03:00,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:00,367 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-11-22 19:03:00,367 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 51 [2023-11-22 19:03:00,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:00,375 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2023-11-22 19:03:00,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2023-11-22 19:03:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:03:00,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:03:00,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:03:00,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 67 treesize of output 65 [2023-11-22 19:03:00,927 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:03:00,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 58 treesize of output 56 [2023-11-22 19:03:01,103 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:03:01,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 129 treesize of output 127 [2023-11-22 19:03:01,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:03:01,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 120 treesize of output 118 [2023-11-22 19:03:01,381 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:03:01,381 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 66 [2023-11-22 19:03:01,384 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:03:01,389 INFO L349 Elim1Store]: treesize reduction 32, result has 11.1 percent of original size [2023-11-22 19:03:01,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 222 [2023-11-22 19:03:01,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:03:01,397 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 47 [2023-11-22 19:03:01,398 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:03:01,400 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 23 treesize of output 17 [2023-11-22 19:03:01,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:03:01,406 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 78 [2023-11-22 19:03:01,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:03:01,411 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 54 [2023-11-22 19:03:01,413 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:03:01,415 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 42 treesize of output 36 [2023-11-22 19:03:01,417 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:03:01,419 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 172 treesize of output 154 [2023-11-22 19:03:01,422 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 91 treesize of output 75 [2023-11-22 19:03:01,429 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-22 19:03:01,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2023-11-22 19:03:01,440 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:03:01,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023908623] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:03:01,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:03:01,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 20 [2023-11-22 19:03:01,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946109506] [2023-11-22 19:03:01,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:03:01,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-22 19:03:01,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:03:01,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-22 19:03:01,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2023-11-22 19:03:01,442 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand has 21 states, 21 states have (on average 5.0) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:03:02,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:03:02,070 INFO L93 Difference]: Finished difference Result 132 states and 163 transitions. [2023-11-22 19:03:02,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 19:03:02,070 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-22 19:03:02,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:03:02,070 INFO L225 Difference]: With dead ends: 132 [2023-11-22 19:03:02,070 INFO L226 Difference]: Without dead ends: 78 [2023-11-22 19:03:02,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2023-11-22 19:03:02,071 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 58 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 19:03:02,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 642 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 19:03:02,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-22 19:03:02,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 71. [2023-11-22 19:03:02,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3) internal successors, (91), 70 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) [2023-11-22 19:03:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2023-11-22 19:03:02,078 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 50 [2023-11-22 19:03:02,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:03:02,078 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 91 transitions. [2023-11-22 19:03:02,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:03:02,078 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions. [2023-11-22 19:03:02,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-22 19:03:02,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:03:02,079 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-11-22 19:03:02,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 19:03:02,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:03:02,282 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:03:02,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:03:02,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1717534623, now seen corresponding path program 6 times [2023-11-22 19:03:02,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:03:02,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333831736] [2023-11-22 19:03:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:03:02,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:03:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:03:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:03:03,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:03:03,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333831736] [2023-11-22 19:03:03,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333831736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:03:03,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844615033] [2023-11-22 19:03:03,162 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-22 19:03:03,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:03:03,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:03:03,163 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) [2023-11-22 19:03:03,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 19:03:03,581 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-11-22 19:03:03,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 19:03:03,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 76 conjunts are in the unsatisfiable core [2023-11-22 19:03:03,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:03:03,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 1 [2023-11-22 19:03:03,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 19:03:03,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-22 19:03:03,677 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-22 19:03:03,677 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 46 treesize of output 43 [2023-11-22 19:03:03,684 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 12 treesize of output 4 [2023-11-22 19:03:03,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-22 19:03:03,698 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-11-22 19:03:03,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-11-22 19:03:03,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-11-22 19:03:03,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:03,776 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 91 treesize of output 68 [2023-11-22 19:03:03,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:03,805 INFO L349 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2023-11-22 19:03:03,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2023-11-22 19:03:03,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:03,813 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 63 treesize of output 59 [2023-11-22 19:03:03,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 19:03:03,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 47 [2023-11-22 19:03:03,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-11-22 19:03:03,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:03,929 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-11-22 19:03:03,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 89 [2023-11-22 19:03:03,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:03,947 INFO L349 Elim1Store]: treesize reduction 12, result has 75.5 percent of original size [2023-11-22 19:03:03,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 49 [2023-11-22 19:03:03,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-11-22 19:03:03,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 59 [2023-11-22 19:03:03,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:03,964 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 0 case distinctions, treesize of input 89 treesize of output 77 [2023-11-22 19:03:05,201 INFO L349 Elim1Store]: treesize reduction 48, result has 77.5 percent of original size [2023-11-22 19:03:05,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 303 treesize of output 291 [2023-11-22 19:03:05,331 INFO L349 Elim1Store]: treesize reduction 72, result has 66.2 percent of original size [2023-11-22 19:03:05,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 119 treesize of output 231 [2023-11-22 19:03:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:03:15,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:03:15,469 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:03:15,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 147 treesize of output 135 [2023-11-22 19:03:15,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:03:15,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 129 treesize of output 117 [2023-11-22 19:03:15,487 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.offset_42| Int) (v_ArrVal_891 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_42| Int) (v_arrayElimArr_31 (Array Int Int)) (v_arrayElimArr_30 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_main_~l~0#1.base_42| v_arrayElimArr_31)) (.cse5 (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_main_~l~0#1.base_42| v_arrayElimArr_30))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse4 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse0 (select (store |c_#memory_int#1| |v_ULTIMATE.start_main_~l~0#1.base_42| v_ArrVal_891) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= 3 (select .cse0 (+ 8 .cse1)))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_30 |v_ULTIMATE.start_main_~l~0#1.offset_42|))) (not (= (select v_arrayElimArr_31 |v_ULTIMATE.start_main_~l~0#1.offset_42|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_42|) 0)) (not (= (select .cse0 (+ 4 .cse1)) 1))))))) is different from false [2023-11-22 19:03:15,562 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:03:15,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 233 treesize of output 221 [2023-11-22 19:03:15,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:03:15,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 215 treesize of output 203 [2023-11-22 19:03:15,588 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_33 (Array Int Int)) (v_arrayElimArr_32 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.offset_42| Int) (v_ArrVal_880 (Array Int Int)) (v_ArrVal_891 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_42| Int) (v_arrayElimArr_31 (Array Int Int)) (v_arrayElimArr_30 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_30 |v_ULTIMATE.start_main_~l~0#1.offset_42|))) (let ((.cse3 (store (store |c_#memory_$Pointer$#1.offset| .cse2 v_arrayElimArr_32) |v_ULTIMATE.start_main_~l~0#1.base_42| v_arrayElimArr_31)) (.cse6 (store (store |c_#memory_$Pointer$#1.base| .cse2 v_arrayElimArr_33) |v_ULTIMATE.start_main_~l~0#1.base_42| v_arrayElimArr_30))) (let ((.cse4 (select (select .cse6 .cse2) 0)) (.cse5 (select (select .cse3 .cse2) 0))) (let ((.cse0 (select (store (store |c_#memory_int#1| .cse2 v_ArrVal_880) |v_ULTIMATE.start_main_~l~0#1.base_42| v_ArrVal_891) (select (select .cse6 .cse4) .cse5))) (.cse1 (select (select .cse3 .cse4) .cse5))) (or (not (= 3 (select .cse0 (+ .cse1 8)))) (not (= (select v_arrayElimArr_33 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (select .cse0 (+ .cse1 4)) 1)) (not (= (select v_arrayElimArr_31 |v_ULTIMATE.start_main_~l~0#1.offset_42|) 0)) (not (= (select |c_#valid| .cse2) 0)) (not (= (select (store |c_#valid| .cse2 1) |v_ULTIMATE.start_main_~l~0#1.base_42|) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_32 0))))))))) is different from false [2023-11-22 19:03:15,683 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:03:15,684 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 351 treesize of output 289 [2023-11-22 19:03:15,690 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:03:15,691 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 217 [2023-11-22 19:03:15,695 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:03:15,696 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:03:15,696 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:03:15,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:15,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 107 [2023-11-22 19:03:15,705 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:03:15,707 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 311 treesize of output 293 [2023-11-22 19:03:15,712 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 326 treesize of output 276 [2023-11-22 19:03:15,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:03:15,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 270 treesize of output 242 [2023-11-22 19:03:15,727 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 6 treesize of output 4 [2023-11-22 19:03:15,865 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2023-11-22 19:03:15,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844615033] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:03:15,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:03:15,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 34 [2023-11-22 19:03:15,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073343090] [2023-11-22 19:03:15,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:03:15,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-22 19:03:15,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:03:15,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-22 19:03:15,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=911, Unknown=2, NotChecked=122, Total=1122 [2023-11-22 19:03:15,867 INFO L87 Difference]: Start difference. First operand 71 states and 91 transitions. Second operand has 34 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:03:26,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:03:26,248 INFO L93 Difference]: Finished difference Result 201 states and 242 transitions. [2023-11-22 19:03:26,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-22 19:03:26,249 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 0 states have call successors, (0), 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 55 [2023-11-22 19:03:26,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:03:26,250 INFO L225 Difference]: With dead ends: 201 [2023-11-22 19:03:26,250 INFO L226 Difference]: Without dead ends: 186 [2023-11-22 19:03:26,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 93 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1796 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=2055, Invalid=6507, Unknown=2, NotChecked=366, Total=8930 [2023-11-22 19:03:26,252 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 726 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 377 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-22 19:03:26,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 899 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 719 Invalid, 0 Unknown, 377 Unchecked, 0.8s Time] [2023-11-22 19:03:26,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-22 19:03:26,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 79. [2023-11-22 19:03:26,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 78 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:03:26,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2023-11-22 19:03:26,261 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 55 [2023-11-22 19:03:26,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:03:26,261 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2023-11-22 19:03:26,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:03:26,261 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2023-11-22 19:03:26,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-22 19:03:26,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:03:26,262 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:03:26,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-22 19:03:26,476 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,SelfDestructingSolverStorable13 [2023-11-22 19:03:26,476 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:03:26,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:03:26,477 INFO L85 PathProgramCache]: Analyzing trace with hash 493282089, now seen corresponding path program 3 times [2023-11-22 19:03:26,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:03:26,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241258975] [2023-11-22 19:03:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:03:26,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:03:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:03:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:03:27,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:03:27,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241258975] [2023-11-22 19:03:27,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241258975] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:03:27,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632086239] [2023-11-22 19:03:27,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 19:03:27,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:03:27,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:03:27,315 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) [2023-11-22 19:03:27,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 19:03:27,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-22 19:03:27,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 19:03:27,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 89 conjunts are in the unsatisfiable core [2023-11-22 19:03:27,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:03:27,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 19:03:27,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2023-11-22 19:03:27,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-22 19:03:27,797 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 [2023-11-22 19:03:27,808 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-22 19:03:27,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 31 [2023-11-22 19:03:27,821 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-11-22 19:03:27,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 18 [2023-11-22 19:03:27,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-11-22 19:03:27,906 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2023-11-22 19:03:27,907 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 21 treesize of output 31 [2023-11-22 19:03:27,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 19:03:27,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:27,922 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 70 treesize of output 47 [2023-11-22 19:03:27,941 INFO L349 Elim1Store]: treesize reduction 100, result has 25.9 percent of original size [2023-11-22 19:03:27,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 49 [2023-11-22 19:03:27,950 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 57 treesize of output 42 [2023-11-22 19:03:28,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-11-22 19:03:28,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:28,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:28,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:28,087 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 0 case distinctions, treesize of input 36 treesize of output 41 [2023-11-22 19:03:28,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 19:03:28,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:28,104 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-11-22 19:03:28,104 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 138 treesize of output 81 [2023-11-22 19:03:28,122 INFO L349 Elim1Store]: treesize reduction 80, result has 47.0 percent of original size [2023-11-22 19:03:28,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 103 [2023-11-22 19:03:28,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:28,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:28,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:03:28,149 INFO L349 Elim1Store]: treesize reduction 33, result has 32.7 percent of original size [2023-11-22 19:03:28,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 29 [2023-11-22 19:03:30,050 INFO L349 Elim1Store]: treesize reduction 48, result has 86.7 percent of original size [2023-11-22 19:03:30,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 16 new quantified variables, introduced 45 case distinctions, treesize of input 329 treesize of output 479 [2023-11-22 19:03:30,382 INFO L349 Elim1Store]: treesize reduction 72, result has 80.1 percent of original size [2023-11-22 19:03:30,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 153 treesize of output 401 [2023-11-22 19:06:30,898 INFO L349 Elim1Store]: treesize reduction 418, result has 69.8 percent of original size [2023-11-22 19:06:30,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 1 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 305 treesize of output 1157 [2023-11-22 19:06:38,836 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:06:38,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:06:39,292 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:06:39,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 180 treesize of output 165 [2023-11-22 19:06:39,298 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:06:39,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 159 treesize of output 144 [2023-11-22 19:06:39,331 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_49| Int) (v_arrayElimArr_39 (Array Int Int)) (v_arrayElimArr_38 (Array Int Int)) (v_ArrVal_1052 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_main_~l~0#1.base_49| v_arrayElimArr_39)) (.cse6 (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_main_~l~0#1.base_49| v_arrayElimArr_38))) (let ((.cse0 (store |c_#memory_int#1| |v_ULTIMATE.start_main_~l~0#1.base_49| v_ArrVal_1052)) (.cse1 (select (select .cse6 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse2 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse3 (select .cse0 (select (select .cse6 .cse1) .cse2))) (.cse4 (select (select .cse5 .cse1) .cse2))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_39 0))) (not (= (select (select .cse0 .cse1) (+ .cse2 4)) 1)) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_49|))) (not (= (select .cse3 (+ 4 .cse4)) 0)) (not (= (select .cse3 (+ 8 .cse4)) 2)) (not (= (select v_arrayElimArr_38 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (store (store (store (select |c_#memory_int#1| |v_ULTIMATE.start_main_~l~0#1.base_49|) 4 1) 8 (select v_ArrVal_1052 8)) 0 (select v_ArrVal_1052 0)) v_ArrVal_1052))))))) is different from false [2023-11-22 19:06:39,424 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:06:39,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 285 treesize of output 270 [2023-11-22 19:06:39,431 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:06:39,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 264 treesize of output 249 [2023-11-22 19:06:39,490 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_49| Int) (v_ArrVal_1048 (Array Int Int)) (v_arrayElimArr_39 (Array Int Int)) (v_arrayElimArr_38 (Array Int Int)) (v_arrayElimArr_40 (Array Int Int)) (v_ArrVal_1052 (Array Int Int)) (v_arrayElimArr_41 (Array Int Int))) (let ((.cse5 (select v_arrayElimArr_38 0))) (let ((.cse7 (store (store |c_#memory_$Pointer$#1.offset| .cse5 v_arrayElimArr_40) |v_ULTIMATE.start_main_~l~0#1.base_49| v_arrayElimArr_39)) (.cse8 (store (store |c_#memory_$Pointer$#1.base| .cse5 v_arrayElimArr_41) |v_ULTIMATE.start_main_~l~0#1.base_49| v_arrayElimArr_38)) (.cse6 (store |c_#memory_int#1| .cse5 v_ArrVal_1048))) (let ((.cse2 (store .cse6 |v_ULTIMATE.start_main_~l~0#1.base_49| v_ArrVal_1052)) (.cse3 (select (select .cse8 .cse5) 0)) (.cse4 (select (select .cse7 .cse5) 0))) (let ((.cse0 (select .cse2 (select (select .cse8 .cse3) .cse4))) (.cse1 (select (select .cse7 .cse3) .cse4))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_40 0))) (not (= 2 (select .cse0 (+ .cse1 8)))) (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= (select (select .cse2 .cse3) (+ 4 .cse4)) 1)) (not (= (select (store |c_#valid| .cse5 1) |v_ULTIMATE.start_main_~l~0#1.base_49|) 0)) (not (= 0 (select v_arrayElimArr_39 0))) (not (= (store (store (store (select .cse6 |v_ULTIMATE.start_main_~l~0#1.base_49|) 4 1) 8 (select v_ArrVal_1052 8)) 0 (select v_ArrVal_1052 0)) v_ArrVal_1052)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_41 0))) (not (= (select |c_#valid| .cse5) 0)))))))) is different from false [2023-11-22 19:06:39,639 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:06:39,640 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 426 treesize of output 352 [2023-11-22 19:06:39,647 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 19:06:39,647 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 342 treesize of output 268 [2023-11-22 19:06:39,650 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:06:39,651 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:06:39,651 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:06:39,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 19:06:39,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 146 [2023-11-22 19:06:39,660 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 19:06:39,661 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 334 treesize of output 316 [2023-11-22 19:06:39,665 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 370 treesize of output 316 [2023-11-22 19:06:39,668 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 316 treesize of output 276 [2023-11-22 19:06:39,728 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_49| Int) (v_arrayElimCell_199 Int) (v_ArrVal_1048 (Array Int Int)) (v_arrayElimCell_200 Int) (v_ArrVal_1043 (Array Int Int)) (v_ArrVal_1052 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int#1| v_arrayElimCell_199 v_ArrVal_1043) v_arrayElimCell_200 v_ArrVal_1048))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_main_~l~0#1.base_49| v_ArrVal_1052))) (let ((.cse3 (store |c_#valid| v_arrayElimCell_199 1)) (.cse2 (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|))) (or (not (= 1 (select (select .cse0 v_arrayElimCell_199) 4))) (not (= (store (store (store (select .cse1 |v_ULTIMATE.start_main_~l~0#1.base_49|) 4 1) 8 (select v_ArrVal_1052 8)) 0 (select v_ArrVal_1052 0)) v_ArrVal_1052)) (not (= (select .cse2 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 8)) 2)) (not (= (select (store .cse3 v_arrayElimCell_200 1) |v_ULTIMATE.start_main_~l~0#1.base_49|) 0)) (not (= (select .cse3 v_arrayElimCell_200) 0)) (not (= (select .cse2 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 0))))))) is different from false [2023-11-22 19:06:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 24 not checked. [2023-11-22 19:06:39,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632086239] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:06:39,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:06:39,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 39 [2023-11-22 19:06:39,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333634144] [2023-11-22 19:06:39,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:06:39,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-22 19:06:39,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:06:39,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-22 19:06:39,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1150, Unknown=3, NotChecked=210, Total=1482 [2023-11-22 19:06:39,807 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand has 39 states, 39 states have (on average 3.6923076923076925) internal successors, (144), 39 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:06:51,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:06:51,374 INFO L93 Difference]: Finished difference Result 145 states and 175 transitions. [2023-11-22 19:06:51,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-22 19:06:51,375 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6923076923076925) internal successors, (144), 39 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-11-22 19:06:51,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:06:51,375 INFO L225 Difference]: With dead ends: 145 [2023-11-22 19:06:51,375 INFO L226 Difference]: Without dead ends: 143 [2023-11-22 19:06:51,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 95 SyntacticMatches, 5 SemanticMatches, 91 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1898 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=1699, Invalid=6320, Unknown=3, NotChecked=534, Total=8556 [2023-11-22 19:06:51,378 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 1077 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 444 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-22 19:06:51,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 600 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 649 Invalid, 0 Unknown, 444 Unchecked, 1.6s Time] [2023-11-22 19:06:51,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-22 19:06:51,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 82. [2023-11-22 19:06:51,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2839506172839505) internal successors, (104), 81 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:06:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 104 transitions. [2023-11-22 19:06:51,388 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 104 transitions. Word has length 57 [2023-11-22 19:06:51,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:06:51,388 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 104 transitions. [2023-11-22 19:06:51,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6923076923076925) internal successors, (144), 39 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 19:06:51,388 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 104 transitions. [2023-11-22 19:06:51,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-22 19:06:51,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:06:51,389 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-11-22 19:06:51,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 19:06:51,602 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,SelfDestructingSolverStorable14 [2023-11-22 19:06:51,602 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:06:51,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:06:51,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1983532019, now seen corresponding path program 7 times [2023-11-22 19:06:51,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:06:51,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398301181] [2023-11-22 19:06:51,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:06:51,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:06:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15