./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/recursive/Ackermann03.c --full-output --preprocessor.use.memory.slicer false --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/recursive/Ackermann03.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 22:59:39,607 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 22:59:39,676 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 22:59:39,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 22:59:39,681 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 22:59:39,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 22:59:39,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 22:59:39,697 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 22:59:39,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 22:59:39,701 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 22:59:39,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 22:59:39,701 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 22:59:39,702 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 22:59:39,703 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 22:59:39,703 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 22:59:39,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 22:59:39,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 22:59:39,703 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 22:59:39,704 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 22:59:39,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 22:59:39,704 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 22:59:39,704 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 22:59:39,705 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 22:59:39,705 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 22:59:39,705 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 22:59:39,705 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 22:59:39,705 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 22:59:39,706 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 22:59:39,706 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 22:59:39,706 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 22:59:39,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 22:59:39,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:59:39,707 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 22:59:39,707 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 22:59:39,707 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 22:59:39,708 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 22:59:39,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 22:59:39,708 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 22:59:39,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 22:59:39,708 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 22:59:39,708 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 22:59:39,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 22:59:39,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 22:59:39,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 22:59:39,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 22:59:39,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 22:59:39,902 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 22:59:39,902 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 22:59:39,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann03.c [2023-11-22 22:59:40,710 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 22:59:40,854 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 22:59:40,855 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Ackermann03.c [2023-11-22 22:59:40,859 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a21b84180/bd3f92f18a0642458f314615ba0ca615/FLAG58dd8f824 [2023-11-22 22:59:40,869 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a21b84180/bd3f92f18a0642458f314615ba0ca615 [2023-11-22 22:59:40,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 22:59:40,873 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 22:59:40,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 22:59:40,876 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 22:59:40,879 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 22:59:40,880 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:59:40" (1/1) ... [2023-11-22 22:59:40,881 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b16475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:59:40, skipping insertion in model container [2023-11-22 22:59:40,881 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:59:40" (1/1) ... [2023-11-22 22:59:40,896 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 22:59:40,994 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/Ackermann03.c[1168,1181] [2023-11-22 22:59:40,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:59:41,003 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 22:59:41,013 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/Ackermann03.c[1168,1181] [2023-11-22 22:59:41,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:59:41,023 INFO L206 MainTranslator]: Completed translation [2023-11-22 22:59:41,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:59:41 WrapperNode [2023-11-22 22:59:41,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 22:59:41,024 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 22:59:41,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 22:59:41,024 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 22:59:41,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:59:41" (1/1) ... [2023-11-22 22:59:41,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:59:41" (1/1) ... [2023-11-22 22:59:41,045 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2023-11-22 22:59:41,045 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 22:59:41,046 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 22:59:41,046 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 22:59:41,046 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 22:59:41,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:59:41" (1/1) ... [2023-11-22 22:59:41,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:59:41" (1/1) ... [2023-11-22 22:59:41,052 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:59:41" (1/1) ... [2023-11-22 22:59:41,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:59:41" (1/1) ... [2023-11-22 22:59:41,054 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:59:41" (1/1) ... [2023-11-22 22:59:41,055 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:59:41" (1/1) ... [2023-11-22 22:59:41,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:59:41" (1/1) ... [2023-11-22 22:59:41,056 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:59:41" (1/1) ... [2023-11-22 22:59:41,057 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 22:59:41,058 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 22:59:41,058 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 22:59:41,058 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 22:59:41,058 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:59:41" (1/1) ... [2023-11-22 22:59:41,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:59:41,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:59:41,082 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 22:59:41,096 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 22:59:41,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 22:59:41,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 22:59:41,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 22:59:41,125 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2023-11-22 22:59:41,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2023-11-22 22:59:41,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 22:59:41,172 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 22:59:41,174 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 22:59:41,331 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 22:59:41,344 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 22:59:41,344 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-22 22:59:41,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:59:41 BoogieIcfgContainer [2023-11-22 22:59:41,347 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 22:59:41,349 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 22:59:41,349 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 22:59:41,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 22:59:41,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:59:40" (1/3) ... [2023-11-22 22:59:41,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fa9391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:59:41, skipping insertion in model container [2023-11-22 22:59:41,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:59:41" (2/3) ... [2023-11-22 22:59:41,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fa9391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:59:41, skipping insertion in model container [2023-11-22 22:59:41,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:59:41" (3/3) ... [2023-11-22 22:59:41,369 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann03.c [2023-11-22 22:59:41,394 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 22:59:41,395 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 22:59:41,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 22:59:41,435 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;@4a25d97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 22:59:41,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 22:59:41,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-22 22:59:41,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-22 22:59:41,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:59:41,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:59:41,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:59:41,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:59:41,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1538870455, now seen corresponding path program 1 times [2023-11-22 22:59:41,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:59:41,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885038820] [2023-11-22 22:59:41,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:59:41,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:59:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:41,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:41,645 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 22:59:41,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:59:41,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885038820] [2023-11-22 22:59:41,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885038820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:59:41,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:59:41,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:59:41,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788742835] [2023-11-22 22:59:41,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:59:41,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:59:41,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:59:41,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:59:41,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:59:41,670 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 22:59:41,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:59:41,741 INFO L93 Difference]: Finished difference Result 46 states and 68 transitions. [2023-11-22 22:59:41,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:59:41,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-22 22:59:41,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:59:41,749 INFO L225 Difference]: With dead ends: 46 [2023-11-22 22:59:41,749 INFO L226 Difference]: Without dead ends: 24 [2023-11-22 22:59:41,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:59:41,753 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 13 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:59:41,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 52 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:59:41,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-22 22:59:41,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-22 22:59:41,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-22 22:59:41,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-11-22 22:59:41,779 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 11 [2023-11-22 22:59:41,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:59:41,780 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-11-22 22:59:41,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 22:59:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-11-22 22:59:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-22 22:59:41,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:59:41,782 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:59:41,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 22:59:41,782 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:59:41,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:59:41,783 INFO L85 PathProgramCache]: Analyzing trace with hash -108557995, now seen corresponding path program 1 times [2023-11-22 22:59:41,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:59:41,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538261185] [2023-11-22 22:59:41,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:59:41,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:59:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:41,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:41,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 22:59:41,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:59:41,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538261185] [2023-11-22 22:59:41,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538261185] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:59:41,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313362339] [2023-11-22 22:59:41,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:59:41,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:59:41,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:59:41,893 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 22:59:41,910 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 22:59:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:41,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 22:59:41,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:59:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 22:59:42,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:59:42,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-22 22:59:42,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313362339] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:59:42,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:59:42,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-22 22:59:42,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488034535] [2023-11-22 22:59:42,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:59:42,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 22:59:42,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:59:42,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 22:59:42,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:59:42,098 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-22 22:59:42,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:59:42,244 INFO L93 Difference]: Finished difference Result 73 states and 125 transitions. [2023-11-22 22:59:42,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 22:59:42,245 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 18 [2023-11-22 22:59:42,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:59:42,247 INFO L225 Difference]: With dead ends: 73 [2023-11-22 22:59:42,249 INFO L226 Difference]: Without dead ends: 49 [2023-11-22 22:59:42,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:59:42,252 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 37 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:59:42,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 68 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:59:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-22 22:59:42,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-22 22:59:42,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.1875) internal successors, (38), 33 states have internal predecessors, (38), 10 states have call successors, (10), 3 states have call predecessors, (10), 6 states have return successors, (27), 12 states have call predecessors, (27), 10 states have call successors, (27) [2023-11-22 22:59:42,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 75 transitions. [2023-11-22 22:59:42,264 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 75 transitions. Word has length 18 [2023-11-22 22:59:42,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:59:42,264 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 75 transitions. [2023-11-22 22:59:42,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-22 22:59:42,264 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 75 transitions. [2023-11-22 22:59:42,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-22 22:59:42,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:59:42,266 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:59:42,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-22 22:59:42,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:59:42,468 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:59:42,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:59:42,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1262121361, now seen corresponding path program 1 times [2023-11-22 22:59:42,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:59:42,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564071842] [2023-11-22 22:59:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:59:42,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:59:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:42,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:42,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:42,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:42,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:42,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 22:59:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:42,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 22:59:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-22 22:59:42,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:59:42,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564071842] [2023-11-22 22:59:42,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564071842] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:59:42,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242113696] [2023-11-22 22:59:42,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:59:42,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:59:42,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:59:42,843 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 22:59:42,880 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 22:59:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:42,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-22 22:59:42,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:59:42,973 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-22 22:59:42,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:59:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-22 22:59:43,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242113696] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:59:43,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:59:43,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2023-11-22 22:59:43,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911940200] [2023-11-22 22:59:43,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:59:43,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 22:59:43,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:59:43,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 22:59:43,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:59:43,341 INFO L87 Difference]: Start difference. First operand 49 states and 75 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-22 22:59:43,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:59:43,423 INFO L93 Difference]: Finished difference Result 119 states and 226 transitions. [2023-11-22 22:59:43,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:59:43,423 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 5 states have call successors, (8) Word has length 44 [2023-11-22 22:59:43,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:59:43,425 INFO L225 Difference]: With dead ends: 119 [2023-11-22 22:59:43,425 INFO L226 Difference]: Without dead ends: 52 [2023-11-22 22:59:43,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 94 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-11-22 22:59:43,427 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:59:43,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 67 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:59:43,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-22 22:59:43,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-22 22:59:43,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 36 states have internal predecessors, (39), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (28), 11 states have call predecessors, (28), 8 states have call successors, (28) [2023-11-22 22:59:43,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 75 transitions. [2023-11-22 22:59:43,449 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 75 transitions. Word has length 44 [2023-11-22 22:59:43,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:59:43,449 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 75 transitions. [2023-11-22 22:59:43,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-22 22:59:43,450 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 75 transitions. [2023-11-22 22:59:43,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-22 22:59:43,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:59:43,453 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 11, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:59:43,466 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 22:59:43,654 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,SelfDestructingSolverStorable2 [2023-11-22 22:59:43,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:59:43,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:59:43,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1462639456, now seen corresponding path program 2 times [2023-11-22 22:59:43,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:59:43,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51293662] [2023-11-22 22:59:43,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:59:43,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:59:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:43,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:43,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:44,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:44,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:44,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:44,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:44,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 22:59:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:44,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 22:59:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:44,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:44,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:44,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:44,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 22:59:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:44,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-22 22:59:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:44,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:44,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:44,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:44,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 22:59:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:44,274 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 127 proven. 266 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-22 22:59:44,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:59:44,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51293662] [2023-11-22 22:59:44,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51293662] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:59:44,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437666633] [2023-11-22 22:59:44,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:59:44,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:59:44,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:59:44,276 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 22:59:44,277 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 22:59:44,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 22:59:44,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:59:44,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-22 22:59:44,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:59:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 360 proven. 86 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-11-22 22:59:44,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:59:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 115 proven. 179 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2023-11-22 22:59:45,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437666633] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:59:45,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:59:45,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 15] total 33 [2023-11-22 22:59:45,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185144874] [2023-11-22 22:59:45,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:59:45,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-22 22:59:45,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:59:45,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-22 22:59:45,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2023-11-22 22:59:45,802 INFO L87 Difference]: Start difference. First operand 52 states and 75 transitions. Second operand has 33 states, 33 states have (on average 2.303030303030303) internal successors, (76), 27 states have internal predecessors, (76), 11 states have call successors, (18), 2 states have call predecessors, (18), 15 states have return successors, (33), 19 states have call predecessors, (33), 11 states have call successors, (33) [2023-11-22 22:59:46,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:59:46,462 INFO L93 Difference]: Finished difference Result 125 states and 252 transitions. [2023-11-22 22:59:46,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-22 22:59:46,463 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.303030303030303) internal successors, (76), 27 states have internal predecessors, (76), 11 states have call successors, (18), 2 states have call predecessors, (18), 15 states have return successors, (33), 19 states have call predecessors, (33), 11 states have call successors, (33) Word has length 118 [2023-11-22 22:59:46,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:59:46,468 INFO L225 Difference]: With dead ends: 125 [2023-11-22 22:59:46,471 INFO L226 Difference]: Without dead ends: 77 [2023-11-22 22:59:46,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=587, Invalid=2835, Unknown=0, NotChecked=0, Total=3422 [2023-11-22 22:59:46,476 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 102 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 22:59:46,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 141 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 22:59:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-22 22:59:46,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2023-11-22 22:59:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 13 states have call successors, (13), 7 states have call predecessors, (13), 11 states have return successors, (46), 16 states have call predecessors, (46), 13 states have call successors, (46) [2023-11-22 22:59:46,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 116 transitions. [2023-11-22 22:59:46,493 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 116 transitions. Word has length 118 [2023-11-22 22:59:46,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:59:46,493 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 116 transitions. [2023-11-22 22:59:46,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.303030303030303) internal successors, (76), 27 states have internal predecessors, (76), 11 states have call successors, (18), 2 states have call predecessors, (18), 15 states have return successors, (33), 19 states have call predecessors, (33), 11 states have call successors, (33) [2023-11-22 22:59:46,494 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 116 transitions. [2023-11-22 22:59:46,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-22 22:59:46,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:59:46,496 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 11, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:59:46,531 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 22:59:46,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:59:46,712 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:59:46,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:59:46,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1363865912, now seen corresponding path program 3 times [2023-11-22 22:59:46,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:59:46,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693394232] [2023-11-22 22:59:46,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:59:46,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:59:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:46,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:46,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:46,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:47,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:47,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:47,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 22:59:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:47,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 22:59:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:47,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:47,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:47,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 22:59:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:47,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-22 22:59:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:47,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:47,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:47,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:47,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 22:59:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:47,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 22:59:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:47,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 22:59:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:47,190 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 125 proven. 275 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-22 22:59:47,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:59:47,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693394232] [2023-11-22 22:59:47,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693394232] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:59:47,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166794810] [2023-11-22 22:59:47,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 22:59:47,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:59:47,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:59:47,192 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 22:59:47,220 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 22:59:47,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-11-22 22:59:47,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:59:47,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-22 22:59:47,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:59:47,355 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 484 proven. 71 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-22 22:59:47,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:59:48,623 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 131 proven. 269 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-22 22:59:48,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166794810] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:59:48,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:59:48,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 27 [2023-11-22 22:59:48,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901188497] [2023-11-22 22:59:48,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:59:48,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-22 22:59:48,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:59:48,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-22 22:59:48,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2023-11-22 22:59:48,626 INFO L87 Difference]: Start difference. First operand 76 states and 116 transitions. Second operand has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 22 states have internal predecessors, (69), 11 states have call successors, (17), 2 states have call predecessors, (17), 12 states have return successors, (27), 13 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-22 22:59:49,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:59:49,101 INFO L93 Difference]: Finished difference Result 170 states and 308 transitions. [2023-11-22 22:59:49,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-22 22:59:49,101 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 22 states have internal predecessors, (69), 11 states have call successors, (17), 2 states have call predecessors, (17), 12 states have return successors, (27), 13 states have call predecessors, (27), 11 states have call successors, (27) Word has length 130 [2023-11-22 22:59:49,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:59:49,103 INFO L225 Difference]: With dead ends: 170 [2023-11-22 22:59:49,103 INFO L226 Difference]: Without dead ends: 93 [2023-11-22 22:59:49,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 281 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=565, Invalid=1985, Unknown=0, NotChecked=0, Total=2550 [2023-11-22 22:59:49,105 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:59:49,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 171 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 22:59:49,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-22 22:59:49,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2023-11-22 22:59:49,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 58 states have internal predecessors, (65), 15 states have call successors, (15), 9 states have call predecessors, (15), 11 states have return successors, (46), 16 states have call predecessors, (46), 15 states have call successors, (46) [2023-11-22 22:59:49,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 126 transitions. [2023-11-22 22:59:49,115 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 126 transitions. Word has length 130 [2023-11-22 22:59:49,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:59:49,115 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 126 transitions. [2023-11-22 22:59:49,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 22 states have internal predecessors, (69), 11 states have call successors, (17), 2 states have call predecessors, (17), 12 states have return successors, (27), 13 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-22 22:59:49,116 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 126 transitions. [2023-11-22 22:59:49,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-22 22:59:49,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:59:49,117 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 11, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:59:49,131 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 22:59:49,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:59:49,328 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:59:49,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:59:49,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1090473022, now seen corresponding path program 4 times [2023-11-22 22:59:49,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:59:49,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84951312] [2023-11-22 22:59:49,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:59:49,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:59:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 22:59:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 22:59:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 22:59:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 22:59:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-22 22:59:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 22:59:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 22:59:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 152 proven. 295 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-11-22 22:59:49,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:59:49,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84951312] [2023-11-22 22:59:49,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84951312] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:59:49,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506500493] [2023-11-22 22:59:49,811 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-22 22:59:49,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:59:49,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:59:49,817 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 22:59:49,820 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 22:59:49,921 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-22 22:59:49,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:59:49,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-22 22:59:49,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:59:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 475 proven. 114 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-11-22 22:59:49,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:59:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 155 proven. 295 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-11-22 22:59:51,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506500493] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:59:51,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:59:51,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 17] total 24 [2023-11-22 22:59:51,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911195580] [2023-11-22 22:59:51,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:59:51,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-22 22:59:51,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:59:51,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-22 22:59:51,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2023-11-22 22:59:51,322 INFO L87 Difference]: Start difference. First operand 84 states and 126 transitions. Second operand has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 21 states have internal predecessors, (70), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) [2023-11-22 22:59:51,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:59:51,710 INFO L93 Difference]: Finished difference Result 193 states and 340 transitions. [2023-11-22 22:59:51,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-22 22:59:51,710 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 21 states have internal predecessors, (70), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) Word has length 130 [2023-11-22 22:59:51,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:59:51,713 INFO L225 Difference]: With dead ends: 193 [2023-11-22 22:59:51,713 INFO L226 Difference]: Without dead ends: 108 [2023-11-22 22:59:51,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 280 SyntacticMatches, 11 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=531, Invalid=1821, Unknown=0, NotChecked=0, Total=2352 [2023-11-22 22:59:51,719 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 78 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:59:51,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 174 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 22:59:51,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-22 22:59:51,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2023-11-22 22:59:51,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 66 states have (on average 1.121212121212121) internal successors, (74), 67 states have internal predecessors, (74), 18 states have call successors, (18), 9 states have call predecessors, (18), 14 states have return successors, (59), 22 states have call predecessors, (59), 18 states have call successors, (59) [2023-11-22 22:59:51,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 151 transitions. [2023-11-22 22:59:51,731 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 151 transitions. Word has length 130 [2023-11-22 22:59:51,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:59:51,731 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 151 transitions. [2023-11-22 22:59:51,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 21 states have internal predecessors, (70), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) [2023-11-22 22:59:51,731 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 151 transitions. [2023-11-22 22:59:51,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-22 22:59:51,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:59:51,733 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:59:51,746 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 22:59:51,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:59:51,944 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:59:51,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:59:51,944 INFO L85 PathProgramCache]: Analyzing trace with hash -511219076, now seen corresponding path program 5 times [2023-11-22 22:59:51,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:59:51,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937513987] [2023-11-22 22:59:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:59:51,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:59:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 22:59:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 22:59:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 22:59:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 22:59:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 22:59:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 22:59:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 22:59:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 22:59:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 22:59:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 445 proven. 284 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2023-11-22 22:59:52,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:59:52,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937513987] [2023-11-22 22:59:52,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937513987] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:59:52,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358270804] [2023-11-22 22:59:52,688 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-22 22:59:52,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:59:52,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:59:52,689 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 22:59:52,692 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 22:59:52,819 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-11-22 22:59:52,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:59:52,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-22 22:59:52,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:59:52,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2023-11-22 22:59:52,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:59:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 467 proven. 286 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2023-11-22 22:59:56,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358270804] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:59:56,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:59:56,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 27] total 38 [2023-11-22 22:59:56,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060713576] [2023-11-22 22:59:56,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:59:56,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-22 22:59:56,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:59:56,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-22 22:59:56,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2023-11-22 22:59:56,332 INFO L87 Difference]: Start difference. First operand 99 states and 151 transitions. Second operand has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 32 states have internal predecessors, (83), 16 states have call successors, (19), 1 states have call predecessors, (19), 18 states have return successors, (36), 18 states have call predecessors, (36), 16 states have call successors, (36) [2023-11-22 22:59:56,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:59:56,952 INFO L93 Difference]: Finished difference Result 223 states and 398 transitions. [2023-11-22 22:59:56,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-22 22:59:56,953 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 32 states have internal predecessors, (83), 16 states have call successors, (19), 1 states have call predecessors, (19), 18 states have return successors, (36), 18 states have call predecessors, (36), 16 states have call successors, (36) Word has length 156 [2023-11-22 22:59:56,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:59:56,955 INFO L225 Difference]: With dead ends: 223 [2023-11-22 22:59:56,955 INFO L226 Difference]: Without dead ends: 132 [2023-11-22 22:59:56,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 331 SyntacticMatches, 14 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1159 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=945, Invalid=4025, Unknown=0, NotChecked=0, Total=4970 [2023-11-22 22:59:56,958 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 81 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 22:59:56,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 227 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 22:59:56,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-22 22:59:56,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 114. [2023-11-22 22:59:56,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.1066666666666667) internal successors, (83), 76 states have internal predecessors, (83), 21 states have call successors, (21), 9 states have call predecessors, (21), 17 states have return successors, (80), 28 states have call predecessors, (80), 21 states have call successors, (80) [2023-11-22 22:59:56,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 184 transitions. [2023-11-22 22:59:56,971 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 184 transitions. Word has length 156 [2023-11-22 22:59:56,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:59:56,972 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 184 transitions. [2023-11-22 22:59:56,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 32 states have internal predecessors, (83), 16 states have call successors, (19), 1 states have call predecessors, (19), 18 states have return successors, (36), 18 states have call predecessors, (36), 16 states have call successors, (36) [2023-11-22 22:59:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 184 transitions. [2023-11-22 22:59:56,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-22 22:59:56,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:59:56,974 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:59:56,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 22:59:57,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:59:57,191 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:59:57,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:59:57,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2140695240, now seen corresponding path program 6 times [2023-11-22 22:59:57,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:59:57,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638567344] [2023-11-22 22:59:57,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:59:57,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:59:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 22:59:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 22:59:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 22:59:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 22:59:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 22:59:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 22:59:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:57,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:58,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:58,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:58,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 22:59:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:58,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 22:59:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:58,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 22:59:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:58,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 22:59:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:58,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 22:59:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:58,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 22:59:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:59:58,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 600 proven. 156 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2023-11-22 22:59:58,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:59:58,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638567344] [2023-11-22 22:59:58,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638567344] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:59:58,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672474128] [2023-11-22 22:59:58,225 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-22 22:59:58,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:59:58,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:59:58,226 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 22:59:58,251 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 22:59:58,426 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2023-11-22 22:59:58,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:59:58,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 79 conjunts are in the unsatisfiable core [2023-11-22 22:59:58,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:59:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 583 proven. 158 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2023-11-22 22:59:58,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:59:59,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 597 proven. 189 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2023-11-22 22:59:59,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672474128] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:59:59,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:59:59,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 33] total 36 [2023-11-22 22:59:59,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428776136] [2023-11-22 22:59:59,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:59:59,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-22 22:59:59,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:59:59,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-22 22:59:59,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2023-11-22 22:59:59,446 INFO L87 Difference]: Start difference. First operand 114 states and 184 transitions. Second operand has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 29 states have internal predecessors, (55), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) [2023-11-22 23:00:01,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:00:01,697 INFO L93 Difference]: Finished difference Result 314 states and 625 transitions. [2023-11-22 23:00:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-22 23:00:01,701 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 29 states have internal predecessors, (55), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) Word has length 182 [2023-11-22 23:00:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:00:01,706 INFO L225 Difference]: With dead ends: 314 [2023-11-22 23:00:01,706 INFO L226 Difference]: Without dead ends: 284 [2023-11-22 23:00:01,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1570 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1015, Invalid=7357, Unknown=0, NotChecked=0, Total=8372 [2023-11-22 23:00:01,711 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 146 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 2746 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 2994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 2746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:00:01,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 482 Invalid, 2994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 2746 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 23:00:01,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-11-22 23:00:01,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 186. [2023-11-22 23:00:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 121 states have (on average 1.0826446280991735) internal successors, (131), 122 states have internal predecessors, (131), 31 states have call successors, (31), 11 states have call predecessors, (31), 33 states have return successors, (230), 52 states have call predecessors, (230), 31 states have call successors, (230) [2023-11-22 23:00:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 392 transitions. [2023-11-22 23:00:01,743 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 392 transitions. Word has length 182 [2023-11-22 23:00:01,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:00:01,743 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 392 transitions. [2023-11-22 23:00:01,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 29 states have internal predecessors, (55), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) [2023-11-22 23:00:01,743 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 392 transitions. [2023-11-22 23:00:01,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-22 23:00:01,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:00:01,745 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:00:01,759 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 23:00:01,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:00:01,958 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:00:01,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:00:01,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1922447937, now seen corresponding path program 7 times [2023-11-22 23:00:01,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:00:01,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562402243] [2023-11-22 23:00:01,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:00:01,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:00:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:00:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:00:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 23:00:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 23:00:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:00:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 23:00:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 23:00:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 502 proven. 372 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2023-11-22 23:00:02,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:00:02,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562402243] [2023-11-22 23:00:02,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562402243] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:00:02,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146227176] [2023-11-22 23:00:02,715 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-22 23:00:02,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:00:02,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:00:02,716 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 23:00:02,736 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 23:00:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:02,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-22 23:00:02,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:00:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2023-11-22 23:00:02,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:00:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 525 proven. 384 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2023-11-22 23:00:06,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146227176] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:00:06,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:00:06,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 28] total 35 [2023-11-22 23:00:06,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033971701] [2023-11-22 23:00:06,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:00:06,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-22 23:00:06,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:00:06,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-22 23:00:06,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2023-11-22 23:00:06,469 INFO L87 Difference]: Start difference. First operand 186 states and 392 transitions. Second operand has 35 states, 35 states have (on average 2.4) internal successors, (84), 31 states have internal predecessors, (84), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) [2023-11-22 23:00:07,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:00:07,124 INFO L93 Difference]: Finished difference Result 381 states and 896 transitions. [2023-11-22 23:00:07,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-22 23:00:07,125 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.4) internal successors, (84), 31 states have internal predecessors, (84), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) Word has length 169 [2023-11-22 23:00:07,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:00:07,127 INFO L225 Difference]: With dead ends: 381 [2023-11-22 23:00:07,127 INFO L226 Difference]: Without dead ends: 203 [2023-11-22 23:00:07,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 360 SyntacticMatches, 19 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1343 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1065, Invalid=4191, Unknown=0, NotChecked=0, Total=5256 [2023-11-22 23:00:07,131 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 54 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:00:07,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 223 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:00:07,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-11-22 23:00:07,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 167. [2023-11-22 23:00:07,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 109 states have (on average 1.0825688073394495) internal successors, (118), 110 states have internal predecessors, (118), 27 states have call successors, (27), 10 states have call predecessors, (27), 30 states have return successors, (162), 46 states have call predecessors, (162), 27 states have call successors, (162) [2023-11-22 23:00:07,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 307 transitions. [2023-11-22 23:00:07,148 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 307 transitions. Word has length 169 [2023-11-22 23:00:07,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:00:07,149 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 307 transitions. [2023-11-22 23:00:07,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.4) internal successors, (84), 31 states have internal predecessors, (84), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) [2023-11-22 23:00:07,149 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 307 transitions. [2023-11-22 23:00:07,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-22 23:00:07,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:00:07,151 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 16, 13, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:00:07,178 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 23:00:07,378 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,SelfDestructingSolverStorable8 [2023-11-22 23:00:07,379 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:00:07,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:00:07,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1482736643, now seen corresponding path program 8 times [2023-11-22 23:00:07,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:00:07,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473559410] [2023-11-22 23:00:07,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:00:07,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:00:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:07,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:07,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:07,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:07,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:07,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:07,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:07,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:07,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:00:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:07,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:00:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 23:00:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 23:00:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:00:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 23:00:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 23:00:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:00:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 23:00:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:08,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 664 proven. 533 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2023-11-22 23:00:08,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:00:08,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473559410] [2023-11-22 23:00:08,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473559410] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:00:08,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983850403] [2023-11-22 23:00:08,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 23:00:08,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:00:08,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:00:08,351 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 23:00:08,364 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 23:00:08,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 23:00:08,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:00:08,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-22 23:00:08,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:00:08,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 647 proven. 519 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2023-11-22 23:00:08,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:00:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 685 proven. 580 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2023-11-22 23:00:12,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983850403] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:00:12,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:00:12,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 32] total 39 [2023-11-22 23:00:12,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3756325] [2023-11-22 23:00:12,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:00:12,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-22 23:00:12,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:00:12,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-22 23:00:12,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1280, Unknown=0, NotChecked=0, Total=1482 [2023-11-22 23:00:12,870 INFO L87 Difference]: Start difference. First operand 167 states and 307 transitions. Second operand has 39 states, 39 states have (on average 2.4615384615384617) internal successors, (96), 35 states have internal predecessors, (96), 21 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (45), 18 states have call predecessors, (45), 21 states have call successors, (45) [2023-11-22 23:00:13,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:00:13,383 INFO L93 Difference]: Finished difference Result 348 states and 743 transitions. [2023-11-22 23:00:13,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-22 23:00:13,384 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.4615384615384617) internal successors, (96), 35 states have internal predecessors, (96), 21 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (45), 18 states have call predecessors, (45), 21 states have call successors, (45) Word has length 195 [2023-11-22 23:00:13,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:00:13,387 INFO L225 Difference]: With dead ends: 348 [2023-11-22 23:00:13,388 INFO L226 Difference]: Without dead ends: 189 [2023-11-22 23:00:13,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 416 SyntacticMatches, 21 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=789, Invalid=3243, Unknown=0, NotChecked=0, Total=4032 [2023-11-22 23:00:13,391 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 112 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:00:13,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 236 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:00:13,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-22 23:00:13,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 172. [2023-11-22 23:00:13,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 112 states have (on average 1.0714285714285714) internal successors, (120), 113 states have internal predecessors, (120), 28 states have call successors, (28), 10 states have call predecessors, (28), 31 states have return successors, (166), 48 states have call predecessors, (166), 28 states have call successors, (166) [2023-11-22 23:00:13,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 314 transitions. [2023-11-22 23:00:13,423 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 314 transitions. Word has length 195 [2023-11-22 23:00:13,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:00:13,424 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 314 transitions. [2023-11-22 23:00:13,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.4615384615384617) internal successors, (96), 35 states have internal predecessors, (96), 21 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (45), 18 states have call predecessors, (45), 21 states have call successors, (45) [2023-11-22 23:00:13,424 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 314 transitions. [2023-11-22 23:00:13,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-22 23:00:13,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:00:13,426 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 17, 14, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:00:13,438 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 23:00:13,638 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,SelfDestructingSolverStorable9 [2023-11-22 23:00:13,639 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:00:13,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:00:13,639 INFO L85 PathProgramCache]: Analyzing trace with hash -599600630, now seen corresponding path program 9 times [2023-11-22 23:00:13,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:00:13,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59940864] [2023-11-22 23:00:13,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:00:13,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:00:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:13,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:13,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:13,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:13,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:13,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:00:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:00:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 23:00:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 23:00:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-22 23:00:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:00:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 23:00:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 23:00:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:00:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 23:00:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 267 proven. 793 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2023-11-22 23:00:14,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:00:14,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59940864] [2023-11-22 23:00:14,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59940864] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:00:14,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030873588] [2023-11-22 23:00:14,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 23:00:14,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:00:14,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:00:14,207 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:00:14,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 23:00:14,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2023-11-22 23:00:14,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:00:14,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-22 23:00:14,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:00:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 1340 proven. 196 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2023-11-22 23:00:14,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:00:16,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 274 proven. 806 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2023-11-22 23:00:16,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030873588] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:00:16,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:00:16,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 21] total 28 [2023-11-22 23:00:16,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299432874] [2023-11-22 23:00:16,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:00:16,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-22 23:00:16,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:00:16,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-22 23:00:16,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2023-11-22 23:00:16,521 INFO L87 Difference]: Start difference. First operand 172 states and 314 transitions. Second operand has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 25 states have internal predecessors, (82), 16 states have call successors, (22), 2 states have call predecessors, (22), 14 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2023-11-22 23:00:16,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:00:16,859 INFO L93 Difference]: Finished difference Result 337 states and 688 transitions. [2023-11-22 23:00:16,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-22 23:00:16,859 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 25 states have internal predecessors, (82), 16 states have call successors, (22), 2 states have call predecessors, (22), 14 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) Word has length 208 [2023-11-22 23:00:16,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:00:16,862 INFO L225 Difference]: With dead ends: 337 [2023-11-22 23:00:16,862 INFO L226 Difference]: Without dead ends: 173 [2023-11-22 23:00:16,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 456 SyntacticMatches, 13 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=423, Invalid=1557, Unknown=0, NotChecked=0, Total=1980 [2023-11-22 23:00:16,865 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 68 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:00:16,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 226 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:00:16,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-22 23:00:16,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2023-11-22 23:00:16,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 112 states have (on average 1.0714285714285714) internal successors, (120), 113 states have internal predecessors, (120), 28 states have call successors, (28), 10 states have call predecessors, (28), 31 states have return successors, (162), 48 states have call predecessors, (162), 28 states have call successors, (162) [2023-11-22 23:00:16,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 310 transitions. [2023-11-22 23:00:16,880 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 310 transitions. Word has length 208 [2023-11-22 23:00:16,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:00:16,881 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 310 transitions. [2023-11-22 23:00:16,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 25 states have internal predecessors, (82), 16 states have call successors, (22), 2 states have call predecessors, (22), 14 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2023-11-22 23:00:16,881 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 310 transitions. [2023-11-22 23:00:16,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-11-22 23:00:16,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:00:16,884 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 23, 19, 18, 18, 18, 18, 18, 18, 18, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:00:16,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 23:00:17,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-22 23:00:17,090 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:00:17,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:00:17,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1205881647, now seen corresponding path program 10 times [2023-11-22 23:00:17,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:00:17,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997487736] [2023-11-22 23:00:17,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:00:17,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:00:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:00:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:00:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 23:00:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 23:00:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:00:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 23:00:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 23:00:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:00:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-22 23:00:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:00:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 23:00:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 23:00:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:00:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 23:00:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 228 proven. 519 refuted. 0 times theorem prover too weak. 3582 trivial. 0 not checked. [2023-11-22 23:00:17,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:00:17,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997487736] [2023-11-22 23:00:17,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997487736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:00:17,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163311782] [2023-11-22 23:00:17,608 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-22 23:00:17,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:00:17,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:00:17,612 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:00:17,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 23:00:17,929 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-22 23:00:17,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:00:17,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-22 23:00:17,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:00:17,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 234 proven. 507 refuted. 0 times theorem prover too weak. 3588 trivial. 0 not checked. [2023-11-22 23:00:17,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:00:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 234 proven. 522 refuted. 0 times theorem prover too weak. 3573 trivial. 0 not checked. [2023-11-22 23:00:18,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163311782] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:00:18,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:00:18,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 15 [2023-11-22 23:00:18,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993888714] [2023-11-22 23:00:18,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:00:18,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-22 23:00:18,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:00:18,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-22 23:00:18,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-22 23:00:18,583 INFO L87 Difference]: Start difference. First operand 172 states and 310 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 11 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (18), 7 states have call predecessors, (18), 11 states have call successors, (18) [2023-11-22 23:00:18,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:00:18,674 INFO L93 Difference]: Finished difference Result 176 states and 313 transitions. [2023-11-22 23:00:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 23:00:18,675 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 11 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (18), 7 states have call predecessors, (18), 11 states have call successors, (18) Word has length 280 [2023-11-22 23:00:18,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:00:18,677 INFO L225 Difference]: With dead ends: 176 [2023-11-22 23:00:18,677 INFO L226 Difference]: Without dead ends: 172 [2023-11-22 23:00:18,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 631 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2023-11-22 23:00:18,678 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:00:18,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 108 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:00:18,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-22 23:00:18,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 160. [2023-11-22 23:00:18,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 104 states have (on average 1.0769230769230769) internal successors, (112), 105 states have internal predecessors, (112), 28 states have call successors, (28), 10 states have call predecessors, (28), 27 states have return successors, (126), 44 states have call predecessors, (126), 28 states have call successors, (126) [2023-11-22 23:00:18,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 266 transitions. [2023-11-22 23:00:18,689 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 266 transitions. Word has length 280 [2023-11-22 23:00:18,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:00:18,690 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 266 transitions. [2023-11-22 23:00:18,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 11 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (18), 7 states have call predecessors, (18), 11 states have call successors, (18) [2023-11-22 23:00:18,690 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 266 transitions. [2023-11-22 23:00:18,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-11-22 23:00:18,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:00:18,692 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 23, 18, 17, 17, 17, 17, 17, 17, 17, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:00:18,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-22 23:00:18,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-22 23:00:18,909 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:00:18,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:00:18,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1937041362, now seen corresponding path program 11 times [2023-11-22 23:00:18,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:00:18,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750218061] [2023-11-22 23:00:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:00:18,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:00:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:00:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:00:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 23:00:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 23:00:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:00:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 23:00:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 23:00:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-22 23:00:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:00:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 23:00:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 23:00:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:00:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 23:00:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 599 proven. 1333 refuted. 0 times theorem prover too weak. 2175 trivial. 0 not checked. [2023-11-22 23:00:19,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:00:19,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750218061] [2023-11-22 23:00:19,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750218061] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:00:19,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005107825] [2023-11-22 23:00:19,986 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-22 23:00:19,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:00:19,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:00:20,041 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:00:20,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 23:00:20,382 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-11-22 23:00:20,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:00:20,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-22 23:00:20,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:00:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 2428 proven. 401 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2023-11-22 23:00:20,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:00:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 700 proven. 1204 refuted. 0 times theorem prover too weak. 2203 trivial. 0 not checked. [2023-11-22 23:00:26,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005107825] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:00:26,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:00:26,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 29] total 39 [2023-11-22 23:00:26,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548685155] [2023-11-22 23:00:26,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:00:26,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-22 23:00:26,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:00:26,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-22 23:00:26,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1300, Unknown=0, NotChecked=0, Total=1482 [2023-11-22 23:00:26,779 INFO L87 Difference]: Start difference. First operand 160 states and 266 transitions. Second operand has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 34 states have internal predecessors, (100), 20 states have call successors, (26), 2 states have call predecessors, (26), 19 states have return successors, (46), 19 states have call predecessors, (46), 20 states have call successors, (46) [2023-11-22 23:00:27,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:00:27,749 INFO L93 Difference]: Finished difference Result 339 states and 643 transitions. [2023-11-22 23:00:27,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-22 23:00:27,752 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 34 states have internal predecessors, (100), 20 states have call successors, (26), 2 states have call predecessors, (26), 19 states have return successors, (46), 19 states have call predecessors, (46), 20 states have call successors, (46) Word has length 274 [2023-11-22 23:00:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:00:27,753 INFO L225 Difference]: With dead ends: 339 [2023-11-22 23:00:27,754 INFO L226 Difference]: Without dead ends: 172 [2023-11-22 23:00:27,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 600 SyntacticMatches, 21 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1537 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1312, Invalid=5330, Unknown=0, NotChecked=0, Total=6642 [2023-11-22 23:00:27,757 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 82 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:00:27,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 238 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 23:00:27,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-22 23:00:27,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 155. [2023-11-22 23:00:27,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 101 states have (on average 1.0792079207920793) internal successors, (109), 102 states have internal predecessors, (109), 27 states have call successors, (27), 10 states have call predecessors, (27), 26 states have return successors, (105), 42 states have call predecessors, (105), 27 states have call successors, (105) [2023-11-22 23:00:27,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 241 transitions. [2023-11-22 23:00:27,769 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 241 transitions. Word has length 274 [2023-11-22 23:00:27,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:00:27,770 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 241 transitions. [2023-11-22 23:00:27,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 34 states have internal predecessors, (100), 20 states have call successors, (26), 2 states have call predecessors, (26), 19 states have return successors, (46), 19 states have call predecessors, (46), 20 states have call successors, (46) [2023-11-22 23:00:27,770 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 241 transitions. [2023-11-22 23:00:27,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2023-11-22 23:00:27,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:00:27,772 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 24, 19, 18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:00:27,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-22 23:00:28,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-22 23:00:28,000 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:00:28,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:00:28,001 INFO L85 PathProgramCache]: Analyzing trace with hash -731195237, now seen corresponding path program 12 times [2023-11-22 23:00:28,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:00:28,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477995115] [2023-11-22 23:00:28,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:00:28,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:00:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 23:00:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:00:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 23:00:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 23:00:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:00:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 23:00:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 23:00:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:00:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 23:00:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 23:00:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:00:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:00:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 23:00:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 23:00:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:00:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 23:00:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:00:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 563 proven. 1446 refuted. 0 times theorem prover too weak. 2521 trivial. 0 not checked. [2023-11-22 23:00:28,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:00:28,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477995115] [2023-11-22 23:00:28,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477995115] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:00:28,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615758160] [2023-11-22 23:00:28,798 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-22 23:00:28,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:00:28,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:00:28,799 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:00:28,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-22 23:00:29,222 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2023-11-22 23:00:29,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:00:29,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-22 23:00:29,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:00:29,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 342 proven. 850 refuted. 0 times theorem prover too weak. 3338 trivial. 0 not checked. [2023-11-22 23:00:29,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:00:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 352 proven. 878 refuted. 0 times theorem prover too weak. 3300 trivial. 0 not checked. [2023-11-22 23:00:30,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615758160] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:00:30,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:00:30,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 11] total 17 [2023-11-22 23:00:30,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32923341] [2023-11-22 23:00:30,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:00:30,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-22 23:00:30,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:00:30,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-22 23:00:30,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-22 23:00:30,681 INFO L87 Difference]: Start difference. First operand 155 states and 241 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 11 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) [2023-11-22 23:00:30,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:00:30,856 INFO L93 Difference]: Finished difference Result 303 states and 531 transitions. [2023-11-22 23:00:30,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 23:00:30,856 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 11 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) Word has length 287 [2023-11-22 23:00:30,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:00:30,858 INFO L225 Difference]: With dead ends: 303 [2023-11-22 23:00:30,858 INFO L226 Difference]: Without dead ends: 0 [2023-11-22 23:00:30,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 654 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-11-22 23:00:30,860 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 36 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:00:30,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 154 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:00:30,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-22 23:00:30,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-22 23:00:30,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 23:00:30,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-22 23:00:30,861 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 287 [2023-11-22 23:00:30,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:00:30,862 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-22 23:00:30,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 11 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) [2023-11-22 23:00:30,862 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-22 23:00:30,862 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-22 23:00:30,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-22 23:00:30,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-22 23:00:31,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-22 23:00:31,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-22 23:00:42,250 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-22 23:00:42,250 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 33) no Hoare annotation was computed. [2023-11-22 23:00:42,250 INFO L899 garLoopResultBuilder]: For program point L27(lines 27 47) no Hoare annotation was computed. [2023-11-22 23:00:42,250 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) no Hoare annotation was computed. [2023-11-22 23:00:42,251 INFO L899 garLoopResultBuilder]: For program point L45(line 45) no Hoare annotation was computed. [2023-11-22 23:00:42,251 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2023-11-22 23:00:42,251 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-22 23:00:42,251 INFO L902 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: true [2023-11-22 23:00:42,251 INFO L899 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2023-11-22 23:00:42,251 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 40) no Hoare annotation was computed. [2023-11-22 23:00:42,251 INFO L899 garLoopResultBuilder]: For program point ackermannEXIT(lines 16 24) no Hoare annotation was computed. [2023-11-22 23:00:42,251 INFO L895 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (and (or (< |ackermann_#in~n| 1) (<= 2 |ackermann_#in~n|) (not (= |ackermann_#in~m| 0))) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2023-11-22 23:00:42,251 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2023-11-22 23:00:42,251 INFO L895 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n 0)) [2023-11-22 23:00:42,252 INFO L895 garLoopResultBuilder]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse24 (<= 3 |ackermann_#in~m|)) (.cse18 (= ackermann_~m |ackermann_#in~m|)) (.cse1 (= |ackermann_#t~ret5| 3)) (.cse20 (= |ackermann_#in~m| 2)) (.cse21 (= ackermann_~m 2)) (.cse26 (= |ackermann_#in~n| 1)) (.cse14 (= |ackermann_#in~m| 0)) (.cse25 (= ackermann_~n 1)) (.cse16 (<= 5 |ackermann_#t~ret5|)) (.cse15 (= |ackermann_#in~n| 3)) (.cse17 (= ackermann_~n 3)) (.cse27 (= |ackermann_#in~m| 1)) (.cse7 (= ackermann_~m 1)) (.cse10 (= ackermann_~n |ackermann_#in~n|)) (.cse19 (<= 5 |ackermann_#in~n|))) (let ((.cse0 (and .cse7 .cse10 (= |ackermann_#t~ret5| 6) .cse19)) (.cse2 (not .cse27)) (.cse4 (and .cse15 .cse7 (= |ackermann_#t~ret5| 4) .cse17 .cse27)) (.cse5 (and .cse16 .cse7 .cse10 (<= 6 |ackermann_#in~n|) .cse27)) (.cse3 (and .cse25 (= |ackermann_#t~ret5| 2) .cse27)) (.cse13 (and .cse14 .cse10 (= ackermann_~m 0))) (.cse11 (and .cse25 .cse1 .cse20 .cse21 .cse26)) (.cse12 (and .cse25 .cse16 .cse24 .cse18 .cse26)) (.cse9 (= |ackermann_#in~n| 4)) (.cse6 (= ackermann_~n 4)) (.cse8 (= |ackermann_#t~ret5| 5))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (or .cse0 .cse2 (and .cse7 .cse8 .cse9) .cse4 .cse5 (and .cse7 (<= |ackermann_#in~n| 2) .cse10)) (or .cse11 .cse12 .cse13 (<= 2 |ackermann_#in~n|) .cse3) (or .cse13 (not .cse14)) (or (< 0 |ackermann_#in~m|) .cse14) (let ((.cse22 (= ackermann_~n 2)) (.cse23 (= |ackermann_#in~n| 2))) (or (< |ackermann_#in~m| 2) (and .cse15 .cse16 .cse17 .cse18) .cse11 .cse12 (and .cse16 .cse18 .cse9 .cse6) (and .cse16 .cse10 .cse18 .cse19) (and .cse20 .cse21 .cse8 .cse22 .cse23) (and .cse16 .cse22 .cse24 .cse23 .cse18)))))) [2023-11-22 23:00:42,252 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 22) no Hoare annotation was computed. [2023-11-22 23:00:42,252 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-11-22 23:00:42,252 INFO L899 garLoopResultBuilder]: For program point L23-3(line 23) no Hoare annotation was computed. [2023-11-22 23:00:42,252 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 19) no Hoare annotation was computed. [2023-11-22 23:00:42,252 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 16 24) the Hoare annotation is: true [2023-11-22 23:00:42,252 INFO L899 garLoopResultBuilder]: For program point ackermannFINAL(lines 16 24) no Hoare annotation was computed. [2023-11-22 23:00:42,255 INFO L445 BasicCegarLoop]: Path program histogram: [12, 1, 1] [2023-11-22 23:00:42,256 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-22 23:00:42,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:00:42 BoogieIcfgContainer [2023-11-22 23:00:42,259 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-22 23:00:42,259 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-22 23:00:42,259 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-22 23:00:42,259 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-22 23:00:42,259 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:59:41" (3/4) ... [2023-11-22 23:00:42,261 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-22 23:00:42,263 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ackermann [2023-11-22 23:00:42,265 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-22 23:00:42,266 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-22 23:00:42,266 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-22 23:00:42,266 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-22 23:00:42,333 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-11-22 23:00:42,333 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2023-11-22 23:00:42,333 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-22 23:00:42,334 INFO L158 Benchmark]: Toolchain (without parser) took 61460.82ms. Allocated memory was 174.1MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 104.2MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 121.5MB. Max. memory is 16.1GB. [2023-11-22 23:00:42,334 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-22 23:00:42,334 INFO L158 Benchmark]: CACSL2BoogieTranslator took 148.40ms. Allocated memory is still 174.1MB. Free memory was 103.9MB in the beginning and 93.8MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-22 23:00:42,335 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.96ms. Allocated memory is still 174.1MB. Free memory was 93.8MB in the beginning and 92.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-22 23:00:42,335 INFO L158 Benchmark]: Boogie Preprocessor took 11.49ms. Allocated memory is still 174.1MB. Free memory was 92.3MB in the beginning and 91.4MB in the end (delta: 939.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-22 23:00:42,335 INFO L158 Benchmark]: RCFGBuilder took 289.92ms. Allocated memory is still 174.1MB. Free memory was 91.1MB in the beginning and 79.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-22 23:00:42,336 INFO L158 Benchmark]: TraceAbstraction took 60909.76ms. Allocated memory was 174.1MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 79.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 769.5MB. Max. memory is 16.1GB. [2023-11-22 23:00:42,336 INFO L158 Benchmark]: Witness Printer took 74.47ms. Allocated memory is still 1.3GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-22 23:00:42,342 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 148.40ms. Allocated memory is still 174.1MB. Free memory was 103.9MB in the beginning and 93.8MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.96ms. Allocated memory is still 174.1MB. Free memory was 93.8MB in the beginning and 92.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.49ms. Allocated memory is still 174.1MB. Free memory was 92.3MB in the beginning and 91.4MB in the end (delta: 939.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 289.92ms. Allocated memory is still 174.1MB. Free memory was 91.1MB in the beginning and 79.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 60909.76ms. Allocated memory was 174.1MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 79.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 769.5MB. Max. memory is 16.1GB. * Witness Printer took 74.47ms. Allocated memory is still 1.3GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 45]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 60.8s, OverallIterations: 14, TraceHistogramMax: 43, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 11.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 950 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 886 mSDsluCounter, 2567 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2198 mSDsCounter, 1071 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8177 IncrementalHoareTripleChecker+Invalid, 9248 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1071 mSolverCounterUnsat, 369 mSDtfsCounter, 8177 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5562 GetRequests, 4804 SyntacticMatches, 124 SemanticMatches, 634 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9055 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=8, InterpolantAutomatonStates: 383, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 218 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 993 PreInvPairs, 3019 NumberOfFragments, 352 HoareAnnotationTreeSize, 993 FomulaSimplifications, 726879 FormulaSimplificationTreeSizeReduction, 9.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 17796 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 36.0s InterpolantComputationTime, 4393 NumberOfCodeBlocks, 4200 NumberOfCodeBlocksAsserted, 131 NumberOfCheckSat, 6544 ConstructedInterpolants, 0 QuantifiedInterpolants, 11832 SizeOfPredicates, 99 NumberOfNonLiveVariables, 6060 ConjunctsInSsa, 353 ConjunctsInUnsatCore, 40 InterpolantComputations, 1 PerfectInterpolantSequences, 57053/72558 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-22 23:00:42,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE