./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de62.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de62.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 de9532d8dfc4a0a0cd7c7b5fdf45ac6c04e52382fa165e3cc41d86867bc75adf --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 01:55:42,791 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 01:55:42,877 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 01:55:42,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 01:55:42,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 01:55:42,919 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 01:55:42,920 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 01:55:42,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 01:55:42,921 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 01:55:42,921 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 01:55:42,922 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 01:55:42,922 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 01:55:42,923 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 01:55:42,924 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 01:55:42,926 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 01:55:42,926 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 01:55:42,926 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 01:55:42,927 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 01:55:42,927 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 01:55:42,927 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 01:55:42,927 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 01:55:42,931 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 01:55:42,931 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 01:55:42,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 01:55:42,932 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 01:55:42,932 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 01:55:42,933 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 01:55:42,933 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 01:55:42,933 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 01:55:42,933 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 01:55:42,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 01:55:42,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 01:55:42,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 01:55:42,934 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 01:55:42,935 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 01:55:42,935 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 01:55:42,936 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 01:55:42,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 01:55:42,944 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 01:55:42,944 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 01:55:42,945 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 01:55:42,946 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 01:55:42,946 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de9532d8dfc4a0a0cd7c7b5fdf45ac6c04e52382fa165e3cc41d86867bc75adf [2024-10-11 01:55:43,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 01:55:43,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 01:55:43,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 01:55:43,204 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 01:55:43,204 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 01:55:43,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de62.c [2024-10-11 01:55:44,591 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 01:55:44,781 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 01:55:44,782 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de62.c [2024-10-11 01:55:44,792 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/0284dc445/d63aa11c9f1a4dc2b7519c32a162b914/FLAG2e4bd9dff [2024-10-11 01:55:45,155 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/0284dc445/d63aa11c9f1a4dc2b7519c32a162b914 [2024-10-11 01:55:45,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 01:55:45,158 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 01:55:45,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 01:55:45,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 01:55:45,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 01:55:45,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:55:45" (1/1) ... [2024-10-11 01:55:45,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c92dace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:55:45, skipping insertion in model container [2024-10-11 01:55:45,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:55:45" (1/1) ... [2024-10-11 01:55:45,185 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 01:55:45,363 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de62.c[368,381] [2024-10-11 01:55:45,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 01:55:45,391 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 01:55:45,402 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de62.c[368,381] [2024-10-11 01:55:45,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 01:55:45,425 INFO L204 MainTranslator]: Completed translation [2024-10-11 01:55:45,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:55:45 WrapperNode [2024-10-11 01:55:45,426 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 01:55:45,427 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 01:55:45,428 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 01:55:45,428 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 01:55:45,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:55:45" (1/1) ... [2024-10-11 01:55:45,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:55:45" (1/1) ... [2024-10-11 01:55:45,459 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2024-10-11 01:55:45,460 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 01:55:45,461 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 01:55:45,461 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 01:55:45,461 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 01:55:45,471 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:55:45" (1/1) ... [2024-10-11 01:55:45,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:55:45" (1/1) ... [2024-10-11 01:55:45,473 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:55:45" (1/1) ... [2024-10-11 01:55:45,483 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 01:55:45,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:55:45" (1/1) ... [2024-10-11 01:55:45,484 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:55:45" (1/1) ... [2024-10-11 01:55:45,486 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:55:45" (1/1) ... [2024-10-11 01:55:45,493 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:55:45" (1/1) ... [2024-10-11 01:55:45,498 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:55:45" (1/1) ... [2024-10-11 01:55:45,499 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:55:45" (1/1) ... [2024-10-11 01:55:45,501 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 01:55:45,504 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 01:55:45,504 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 01:55:45,505 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 01:55:45,505 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:55:45" (1/1) ... [2024-10-11 01:55:45,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 01:55:45,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:45,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 01:55:45,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 01:55:45,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 01:55:45,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 01:55:45,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 01:55:45,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 01:55:45,663 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 01:55:45,668 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 01:55:45,860 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-10-11 01:55:45,860 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 01:55:45,892 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 01:55:45,894 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-11 01:55:45,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:55:45 BoogieIcfgContainer [2024-10-11 01:55:45,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 01:55:45,899 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 01:55:45,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 01:55:45,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 01:55:45,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 01:55:45" (1/3) ... [2024-10-11 01:55:45,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52da7784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:55:45, skipping insertion in model container [2024-10-11 01:55:45,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:55:45" (2/3) ... [2024-10-11 01:55:45,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52da7784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:55:45, skipping insertion in model container [2024-10-11 01:55:45,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:55:45" (3/3) ... [2024-10-11 01:55:45,907 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de62.c [2024-10-11 01:55:45,924 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 01:55:45,925 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 01:55:45,989 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 01:55:45,996 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@583c2995, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 01:55:45,997 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 01:55:46,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:46,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-11 01:55:46,007 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:46,009 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:46,009 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:46,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:46,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1862478825, now seen corresponding path program 1 times [2024-10-11 01:55:46,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:46,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587707918] [2024-10-11 01:55:46,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:46,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:46,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:46,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587707918] [2024-10-11 01:55:46,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587707918] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:55:46,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:55:46,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 01:55:46,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774622115] [2024-10-11 01:55:46,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:55:46,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 01:55:46,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:46,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 01:55:46,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 01:55:46,216 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:46,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:46,242 INFO L93 Difference]: Finished difference Result 26 states and 48 transitions. [2024-10-11 01:55:46,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 01:55:46,246 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-11 01:55:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:46,253 INFO L225 Difference]: With dead ends: 26 [2024-10-11 01:55:46,254 INFO L226 Difference]: Without dead ends: 12 [2024-10-11 01:55:46,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 01:55:46,259 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:46,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:55:46,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-10-11 01:55:46,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-10-11 01:55:46,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:46,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2024-10-11 01:55:46,284 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 17 transitions. Word has length 11 [2024-10-11 01:55:46,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:46,285 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 17 transitions. [2024-10-11 01:55:46,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:46,285 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 17 transitions. [2024-10-11 01:55:46,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-11 01:55:46,287 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:46,287 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:46,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 01:55:46,288 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:46,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:46,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1976995429, now seen corresponding path program 1 times [2024-10-11 01:55:46,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:46,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340809418] [2024-10-11 01:55:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:46,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:46,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:46,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340809418] [2024-10-11 01:55:46,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340809418] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:55:46,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:55:46,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 01:55:46,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411502002] [2024-10-11 01:55:46,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:55:46,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:55:46,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:46,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:55:46,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 01:55:46,570 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:46,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:46,630 INFO L93 Difference]: Finished difference Result 26 states and 38 transitions. [2024-10-11 01:55:46,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:55:46,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-11 01:55:46,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:46,632 INFO L225 Difference]: With dead ends: 26 [2024-10-11 01:55:46,632 INFO L226 Difference]: Without dead ends: 17 [2024-10-11 01:55:46,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 01:55:46,634 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:46,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 28 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:55:46,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-11 01:55:46,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-11 01:55:46,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2024-10-11 01:55:46,647 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 25 transitions. Word has length 11 [2024-10-11 01:55:46,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:46,648 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 25 transitions. [2024-10-11 01:55:46,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:46,648 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 25 transitions. [2024-10-11 01:55:46,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-11 01:55:46,649 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:46,649 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:46,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 01:55:46,651 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:46,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:46,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1155650727, now seen corresponding path program 1 times [2024-10-11 01:55:46,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:46,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796126302] [2024-10-11 01:55:46,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:46,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:46,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:46,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:46,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796126302] [2024-10-11 01:55:46,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796126302] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:55:46,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:55:46,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:55:46,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66503098] [2024-10-11 01:55:46,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:55:46,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:55:46,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:46,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:55:46,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:55:46,732 INFO L87 Difference]: Start difference. First operand 17 states and 25 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:46,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:46,784 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2024-10-11 01:55:46,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:55:46,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-11 01:55:46,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:46,788 INFO L225 Difference]: With dead ends: 40 [2024-10-11 01:55:46,788 INFO L226 Difference]: Without dead ends: 27 [2024-10-11 01:55:46,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:55:46,790 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:46,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 20 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:55:46,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-11 01:55:46,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-10-11 01:55:46,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:46,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 40 transitions. [2024-10-11 01:55:46,803 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 40 transitions. Word has length 12 [2024-10-11 01:55:46,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:46,803 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 40 transitions. [2024-10-11 01:55:46,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:46,803 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 40 transitions. [2024-10-11 01:55:46,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-11 01:55:46,804 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:46,804 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:46,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 01:55:46,805 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:46,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:46,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1110398198, now seen corresponding path program 1 times [2024-10-11 01:55:46,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:46,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585142324] [2024-10-11 01:55:46,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:46,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:46,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:46,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:46,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585142324] [2024-10-11 01:55:46,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585142324] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:55:46,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:55:46,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:55:46,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565355061] [2024-10-11 01:55:46,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:55:46,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:55:46,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:46,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:55:46,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:55:46,888 INFO L87 Difference]: Start difference. First operand 27 states and 40 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:46,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:46,934 INFO L93 Difference]: Finished difference Result 42 states and 62 transitions. [2024-10-11 01:55:46,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:55:46,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-11 01:55:46,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:46,938 INFO L225 Difference]: With dead ends: 42 [2024-10-11 01:55:46,938 INFO L226 Difference]: Without dead ends: 31 [2024-10-11 01:55:46,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:55:46,943 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:46,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:55:46,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-11 01:55:46,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-10-11 01:55:46,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:46,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2024-10-11 01:55:46,962 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 12 [2024-10-11 01:55:46,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:46,962 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2024-10-11 01:55:46,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2024-10-11 01:55:46,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-11 01:55:46,963 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:46,963 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:46,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 01:55:46,964 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:46,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:46,965 INFO L85 PathProgramCache]: Analyzing trace with hash 141528505, now seen corresponding path program 1 times [2024-10-11 01:55:46,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:46,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179234139] [2024-10-11 01:55:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:46,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:47,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:55:47,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:47,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179234139] [2024-10-11 01:55:47,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179234139] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:55:47,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:55:47,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:55:47,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083616943] [2024-10-11 01:55:47,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:55:47,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:55:47,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:47,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:55:47,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 01:55:47,101 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:47,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:47,151 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2024-10-11 01:55:47,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:55:47,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-11 01:55:47,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:47,153 INFO L225 Difference]: With dead ends: 40 [2024-10-11 01:55:47,154 INFO L226 Difference]: Without dead ends: 27 [2024-10-11 01:55:47,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 01:55:47,155 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:47,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:55:47,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-11 01:55:47,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-10-11 01:55:47,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.5) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:47,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2024-10-11 01:55:47,174 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 39 transitions. Word has length 14 [2024-10-11 01:55:47,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:47,174 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 39 transitions. [2024-10-11 01:55:47,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:47,174 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2024-10-11 01:55:47,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-11 01:55:47,175 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:47,175 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:47,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 01:55:47,175 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:47,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:47,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1611499544, now seen corresponding path program 1 times [2024-10-11 01:55:47,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:47,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240606309] [2024-10-11 01:55:47,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:47,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:47,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:55:47,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:47,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240606309] [2024-10-11 01:55:47,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240606309] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:47,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828066014] [2024-10-11 01:55:47,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:47,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:47,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:47,329 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:47,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 01:55:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:47,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 01:55:47,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:47,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:55:47,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:47,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:55:47,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828066014] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:47,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:55:47,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-10-11 01:55:47,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599825548] [2024-10-11 01:55:47,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:55:47,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:55:47,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:47,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:55:47,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-11 01:55:47,506 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:47,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:47,557 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2024-10-11 01:55:47,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:55:47,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-11 01:55:47,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:47,558 INFO L225 Difference]: With dead ends: 34 [2024-10-11 01:55:47,558 INFO L226 Difference]: Without dead ends: 24 [2024-10-11 01:55:47,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-11 01:55:47,561 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:47,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:55:47,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-11 01:55:47,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-11 01:55:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:47,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2024-10-11 01:55:47,569 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 14 [2024-10-11 01:55:47,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:47,569 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2024-10-11 01:55:47,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:47,570 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2024-10-11 01:55:47,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-11 01:55:47,570 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:47,571 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:47,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 01:55:47,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:47,776 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:47,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:47,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2082676004, now seen corresponding path program 1 times [2024-10-11 01:55:47,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:47,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578787411] [2024-10-11 01:55:47,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:47,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:47,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 01:55:47,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:47,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578787411] [2024-10-11 01:55:47,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578787411] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:47,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149139716] [2024-10-11 01:55:47,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:47,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:47,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:47,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:47,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 01:55:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:47,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:55:47,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:47,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:48,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 01:55:48,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149139716] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:48,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:48,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 10 [2024-10-11 01:55:48,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391715045] [2024-10-11 01:55:48,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:48,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 01:55:48,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:48,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 01:55:48,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:55:48,039 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:48,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:48,222 INFO L93 Difference]: Finished difference Result 89 states and 142 transitions. [2024-10-11 01:55:48,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 01:55:48,223 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-10-11 01:55:48,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:48,225 INFO L225 Difference]: With dead ends: 89 [2024-10-11 01:55:48,225 INFO L226 Difference]: Without dead ends: 72 [2024-10-11 01:55:48,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-10-11 01:55:48,226 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:48,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 60 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:55:48,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-11 01:55:48,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 52. [2024-10-11 01:55:48,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 51 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:48,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2024-10-11 01:55:48,251 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 15 [2024-10-11 01:55:48,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:48,252 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2024-10-11 01:55:48,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:48,252 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2024-10-11 01:55:48,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-11 01:55:48,252 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:48,252 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:48,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 01:55:48,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:48,453 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:48,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:48,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1755904316, now seen corresponding path program 1 times [2024-10-11 01:55:48,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:48,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841248380] [2024-10-11 01:55:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:48,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:48,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:55:48,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:48,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841248380] [2024-10-11 01:55:48,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841248380] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:48,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716698292] [2024-10-11 01:55:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:48,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:48,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:48,584 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:48,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 01:55:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:48,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 01:55:48,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:48,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 01:55:48,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 01:55:48,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716698292] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:48,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:48,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-10-11 01:55:48,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129155608] [2024-10-11 01:55:48,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:48,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 01:55:48,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:48,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 01:55:48,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 01:55:48,737 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:48,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:48,909 INFO L93 Difference]: Finished difference Result 168 states and 258 transitions. [2024-10-11 01:55:48,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 01:55:48,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-10-11 01:55:48,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:48,914 INFO L225 Difference]: With dead ends: 168 [2024-10-11 01:55:48,914 INFO L226 Difference]: Without dead ends: 145 [2024-10-11 01:55:48,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:55:48,917 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:48,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 47 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:55:48,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-10-11 01:55:48,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 82. [2024-10-11 01:55:48,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.5061728395061729) internal successors, (122), 81 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:48,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 122 transitions. [2024-10-11 01:55:48,969 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 122 transitions. Word has length 15 [2024-10-11 01:55:48,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:48,970 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 122 transitions. [2024-10-11 01:55:48,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:48,970 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 122 transitions. [2024-10-11 01:55:48,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-11 01:55:48,971 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:48,971 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:48,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 01:55:49,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:49,173 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:49,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:49,173 INFO L85 PathProgramCache]: Analyzing trace with hash -861868215, now seen corresponding path program 1 times [2024-10-11 01:55:49,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:49,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157732757] [2024-10-11 01:55:49,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:49,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:55:49,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:49,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157732757] [2024-10-11 01:55:49,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157732757] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:49,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108694629] [2024-10-11 01:55:49,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:49,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:49,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:49,284 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:49,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 01:55:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:49,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 01:55:49,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:55:49,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:49,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:55:49,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108694629] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:49,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:49,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-10-11 01:55:49,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681739266] [2024-10-11 01:55:49,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:49,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 01:55:49,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:49,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 01:55:49,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-11 01:55:49,444 INFO L87 Difference]: Start difference. First operand 82 states and 122 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:49,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:49,755 INFO L93 Difference]: Finished difference Result 156 states and 233 transitions. [2024-10-11 01:55:49,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 01:55:49,755 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-10-11 01:55:49,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:49,757 INFO L225 Difference]: With dead ends: 156 [2024-10-11 01:55:49,757 INFO L226 Difference]: Without dead ends: 122 [2024-10-11 01:55:49,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2024-10-11 01:55:49,759 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 40 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:49,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 47 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:55:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-10-11 01:55:49,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 101. [2024-10-11 01:55:49,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.45) internal successors, (145), 100 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:49,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 145 transitions. [2024-10-11 01:55:49,807 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 145 transitions. Word has length 16 [2024-10-11 01:55:49,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:49,807 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 145 transitions. [2024-10-11 01:55:49,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:49,808 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 145 transitions. [2024-10-11 01:55:49,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-11 01:55:49,810 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:49,810 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:49,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 01:55:50,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 01:55:50,015 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:50,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:50,015 INFO L85 PathProgramCache]: Analyzing trace with hash 456382938, now seen corresponding path program 1 times [2024-10-11 01:55:50,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:50,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229948415] [2024-10-11 01:55:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:50,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:50,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:55:50,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:50,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229948415] [2024-10-11 01:55:50,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229948415] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:50,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834539158] [2024-10-11 01:55:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:50,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:50,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:50,177 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:50,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 01:55:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:50,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 01:55:50,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:55:50,268 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:50,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:55:50,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834539158] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:50,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:50,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-10-11 01:55:50,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624439959] [2024-10-11 01:55:50,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:50,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 01:55:50,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:50,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 01:55:50,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 01:55:50,305 INFO L87 Difference]: Start difference. First operand 101 states and 145 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:50,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:50,384 INFO L93 Difference]: Finished difference Result 130 states and 187 transitions. [2024-10-11 01:55:50,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 01:55:50,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-11 01:55:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:50,385 INFO L225 Difference]: With dead ends: 130 [2024-10-11 01:55:50,385 INFO L226 Difference]: Without dead ends: 115 [2024-10-11 01:55:50,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 01:55:50,386 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:50,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:55:50,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-10-11 01:55:50,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2024-10-11 01:55:50,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.5) internal successors, (144), 96 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:50,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 144 transitions. [2024-10-11 01:55:50,426 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 144 transitions. Word has length 17 [2024-10-11 01:55:50,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:50,428 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 144 transitions. [2024-10-11 01:55:50,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:50,428 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 144 transitions. [2024-10-11 01:55:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-11 01:55:50,431 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:50,432 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:50,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 01:55:50,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 01:55:50,633 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:50,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:50,633 INFO L85 PathProgramCache]: Analyzing trace with hash -192617351, now seen corresponding path program 2 times [2024-10-11 01:55:50,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:50,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23760640] [2024-10-11 01:55:50,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:50,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:50,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 01:55:50,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:50,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23760640] [2024-10-11 01:55:50,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23760640] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:50,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820432204] [2024-10-11 01:55:50,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:55:50,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:50,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:50,727 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:50,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 01:55:50,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:55:50,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:55:50,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 01:55:50,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:50,813 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 01:55:50,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 01:55:50,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820432204] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:50,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:50,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-11 01:55:50,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710051304] [2024-10-11 01:55:50,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:50,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 01:55:50,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:50,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 01:55:50,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-11 01:55:50,890 INFO L87 Difference]: Start difference. First operand 97 states and 144 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:51,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:51,058 INFO L93 Difference]: Finished difference Result 137 states and 204 transitions. [2024-10-11 01:55:51,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 01:55:51,058 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-10-11 01:55:51,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:51,059 INFO L225 Difference]: With dead ends: 137 [2024-10-11 01:55:51,059 INFO L226 Difference]: Without dead ends: 92 [2024-10-11 01:55:51,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-10-11 01:55:51,060 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 35 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:51,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 63 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:55:51,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-11 01:55:51,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2024-10-11 01:55:51,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.4819277108433735) internal successors, (123), 83 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 123 transitions. [2024-10-11 01:55:51,090 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 123 transitions. Word has length 18 [2024-10-11 01:55:51,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:51,090 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 123 transitions. [2024-10-11 01:55:51,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:51,091 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 123 transitions. [2024-10-11 01:55:51,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 01:55:51,092 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:51,092 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:51,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 01:55:51,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 01:55:51,293 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:51,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:51,294 INFO L85 PathProgramCache]: Analyzing trace with hash -369506181, now seen corresponding path program 3 times [2024-10-11 01:55:51,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:51,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098485355] [2024-10-11 01:55:51,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:51,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:55:51,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:51,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098485355] [2024-10-11 01:55:51,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098485355] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:51,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976539404] [2024-10-11 01:55:51,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:55:51,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:51,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:51,428 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:51,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 01:55:51,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 01:55:51,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:55:51,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:55:51,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:55:51,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:55:51,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976539404] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:51,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:51,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 13 [2024-10-11 01:55:51,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096251804] [2024-10-11 01:55:51,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:51,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 01:55:51,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:51,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 01:55:51,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-10-11 01:55:51,673 INFO L87 Difference]: Start difference. First operand 84 states and 123 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:52,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:52,043 INFO L93 Difference]: Finished difference Result 139 states and 205 transitions. [2024-10-11 01:55:52,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 01:55:52,044 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-11 01:55:52,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:52,044 INFO L225 Difference]: With dead ends: 139 [2024-10-11 01:55:52,044 INFO L226 Difference]: Without dead ends: 84 [2024-10-11 01:55:52,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:55:52,046 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 23 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:52,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 95 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:55:52,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-11 01:55:52,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2024-10-11 01:55:52,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4444444444444444) internal successors, (104), 72 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:52,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 104 transitions. [2024-10-11 01:55:52,067 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 104 transitions. Word has length 19 [2024-10-11 01:55:52,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:52,068 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 104 transitions. [2024-10-11 01:55:52,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:52,068 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 104 transitions. [2024-10-11 01:55:52,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-11 01:55:52,068 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:52,068 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:52,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 01:55:52,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:52,269 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:52,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:52,270 INFO L85 PathProgramCache]: Analyzing trace with hash -337957572, now seen corresponding path program 4 times [2024-10-11 01:55:52,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:52,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839338686] [2024-10-11 01:55:52,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:52,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 01:55:52,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:52,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839338686] [2024-10-11 01:55:52,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839338686] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:52,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057491005] [2024-10-11 01:55:52,386 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:55:52,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:52,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:52,387 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:52,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 01:55:52,433 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:55:52,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:55:52,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 01:55:52,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:52,503 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:55:52,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 01:55:52,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057491005] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:52,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:52,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 17 [2024-10-11 01:55:52,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944865727] [2024-10-11 01:55:52,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:52,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 01:55:52,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:52,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 01:55:52,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-11 01:55:52,623 INFO L87 Difference]: Start difference. First operand 73 states and 104 transitions. Second operand has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:53,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:53,183 INFO L93 Difference]: Finished difference Result 167 states and 253 transitions. [2024-10-11 01:55:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-11 01:55:53,184 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-11 01:55:53,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:53,185 INFO L225 Difference]: With dead ends: 167 [2024-10-11 01:55:53,185 INFO L226 Difference]: Without dead ends: 133 [2024-10-11 01:55:53,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2024-10-11 01:55:53,186 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 43 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:53,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 116 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:55:53,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-10-11 01:55:53,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 102. [2024-10-11 01:55:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.4455445544554455) internal successors, (146), 101 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:53,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 146 transitions. [2024-10-11 01:55:53,223 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 146 transitions. Word has length 21 [2024-10-11 01:55:53,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:53,223 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 146 transitions. [2024-10-11 01:55:53,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:53,224 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 146 transitions. [2024-10-11 01:55:53,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-11 01:55:53,224 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:53,224 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:53,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 01:55:53,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 01:55:53,429 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:53,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:53,430 INFO L85 PathProgramCache]: Analyzing trace with hash -846276983, now seen corresponding path program 5 times [2024-10-11 01:55:53,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:53,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028674137] [2024-10-11 01:55:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:53,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:55:53,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:53,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028674137] [2024-10-11 01:55:53,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028674137] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:53,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134587966] [2024-10-11 01:55:53,577 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:55:53,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:53,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:53,579 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:53,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 01:55:53,628 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 01:55:53,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:55:53,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 01:55:53,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:53,753 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 01:55:53,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 01:55:53,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134587966] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:53,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:53,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2024-10-11 01:55:53,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112924721] [2024-10-11 01:55:53,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:53,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 01:55:53,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:53,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 01:55:53,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2024-10-11 01:55:53,983 INFO L87 Difference]: Start difference. First operand 102 states and 146 transitions. Second operand has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:55,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:55,486 INFO L93 Difference]: Finished difference Result 204 states and 312 transitions. [2024-10-11 01:55:55,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-11 01:55:55,487 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-10-11 01:55:55,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:55,488 INFO L225 Difference]: With dead ends: 204 [2024-10-11 01:55:55,488 INFO L226 Difference]: Without dead ends: 160 [2024-10-11 01:55:55,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=825, Invalid=3465, Unknown=0, NotChecked=0, Total=4290 [2024-10-11 01:55:55,490 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 92 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:55,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 210 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 01:55:55,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-10-11 01:55:55,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 107. [2024-10-11 01:55:55,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.3773584905660377) internal successors, (146), 106 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 146 transitions. [2024-10-11 01:55:55,539 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 146 transitions. Word has length 22 [2024-10-11 01:55:55,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:55,540 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 146 transitions. [2024-10-11 01:55:55,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:55,540 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 146 transitions. [2024-10-11 01:55:55,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-11 01:55:55,541 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:55,541 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:55,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 01:55:55,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:55,741 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:55,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:55,742 INFO L85 PathProgramCache]: Analyzing trace with hash 640670314, now seen corresponding path program 1 times [2024-10-11 01:55:55,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:55,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694219332] [2024-10-11 01:55:55,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:55,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:55,889 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 01:55:55,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:55,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694219332] [2024-10-11 01:55:55,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694219332] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:55,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74417661] [2024-10-11 01:55:55,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:55,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:55,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:55,891 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:55,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 01:55:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:55,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-11 01:55:55,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 01:55:55,998 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:56,052 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 01:55:56,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74417661] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:56,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:56,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 5] total 16 [2024-10-11 01:55:56,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997437042] [2024-10-11 01:55:56,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:56,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 01:55:56,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:56,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 01:55:56,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-10-11 01:55:56,054 INFO L87 Difference]: Start difference. First operand 107 states and 146 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:56,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:56,535 INFO L93 Difference]: Finished difference Result 221 states and 326 transitions. [2024-10-11 01:55:56,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 01:55:56,535 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-10-11 01:55:56,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:56,536 INFO L225 Difference]: With dead ends: 221 [2024-10-11 01:55:56,536 INFO L226 Difference]: Without dead ends: 172 [2024-10-11 01:55:56,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 01:55:56,538 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 33 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:56,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 192 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:55:56,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-10-11 01:55:56,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 137. [2024-10-11 01:55:56,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.3823529411764706) internal successors, (188), 136 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:56,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 188 transitions. [2024-10-11 01:55:56,576 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 188 transitions. Word has length 22 [2024-10-11 01:55:56,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:56,576 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 188 transitions. [2024-10-11 01:55:56,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:56,576 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 188 transitions. [2024-10-11 01:55:56,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-11 01:55:56,577 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:56,577 INFO L215 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:56,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 01:55:56,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 01:55:56,778 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:56,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:56,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1904897495, now seen corresponding path program 2 times [2024-10-11 01:55:56,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:56,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530438849] [2024-10-11 01:55:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:56,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:56,905 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:55:56,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:56,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530438849] [2024-10-11 01:55:56,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530438849] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:56,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712849822] [2024-10-11 01:55:56,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:55:56,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:56,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:56,907 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:56,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 01:55:56,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:55:56,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:55:56,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-11 01:55:56,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:57,012 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:57,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:57,121 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-11 01:55:57,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712849822] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:57,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:57,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 18 [2024-10-11 01:55:57,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466798983] [2024-10-11 01:55:57,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:57,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 01:55:57,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:57,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 01:55:57,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-10-11 01:55:57,123 INFO L87 Difference]: Start difference. First operand 137 states and 188 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:57,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:57,390 INFO L93 Difference]: Finished difference Result 327 states and 486 transitions. [2024-10-11 01:55:57,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 01:55:57,390 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-10-11 01:55:57,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:57,392 INFO L225 Difference]: With dead ends: 327 [2024-10-11 01:55:57,392 INFO L226 Difference]: Without dead ends: 260 [2024-10-11 01:55:57,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2024-10-11 01:55:57,393 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 84 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:57,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 185 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:55:57,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-10-11 01:55:57,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 188. [2024-10-11 01:55:57,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.374331550802139) internal successors, (257), 187 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 257 transitions. [2024-10-11 01:55:57,436 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 257 transitions. Word has length 22 [2024-10-11 01:55:57,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:57,436 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 257 transitions. [2024-10-11 01:55:57,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 257 transitions. [2024-10-11 01:55:57,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 01:55:57,437 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:57,437 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:57,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-11 01:55:57,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 01:55:57,637 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:57,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:57,638 INFO L85 PathProgramCache]: Analyzing trace with hash 484083850, now seen corresponding path program 2 times [2024-10-11 01:55:57,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:57,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504335521] [2024-10-11 01:55:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:57,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:57,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:57,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504335521] [2024-10-11 01:55:57,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504335521] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:57,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596032030] [2024-10-11 01:55:57,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:55:57,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:57,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:57,809 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:57,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 01:55:57,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:55:57,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:55:57,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 01:55:57,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:57,948 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 01:55:57,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 01:55:58,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596032030] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:58,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:58,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 23 [2024-10-11 01:55:58,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541274940] [2024-10-11 01:55:58,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:58,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 01:55:58,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:58,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 01:55:58,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:55:58,072 INFO L87 Difference]: Start difference. First operand 188 states and 257 transitions. Second operand has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:59,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:59,480 INFO L93 Difference]: Finished difference Result 675 states and 993 transitions. [2024-10-11 01:55:59,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-10-11 01:55:59,481 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-10-11 01:55:59,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:59,496 INFO L225 Difference]: With dead ends: 675 [2024-10-11 01:55:59,496 INFO L226 Difference]: Without dead ends: 579 [2024-10-11 01:55:59,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=912, Invalid=3644, Unknown=0, NotChecked=0, Total=4556 [2024-10-11 01:55:59,499 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 144 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:59,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 169 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 01:55:59,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-10-11 01:55:59,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 219. [2024-10-11 01:55:59,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.3623853211009174) internal successors, (297), 218 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:59,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 297 transitions. [2024-10-11 01:55:59,596 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 297 transitions. Word has length 24 [2024-10-11 01:55:59,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:59,596 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 297 transitions. [2024-10-11 01:55:59,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 297 transitions. [2024-10-11 01:55:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-11 01:55:59,597 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:59,597 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:59,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 01:55:59,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 01:55:59,802 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:59,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:59,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1674599493, now seen corresponding path program 2 times [2024-10-11 01:55:59,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:59,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19742532] [2024-10-11 01:55:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:59,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 01:55:59,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:59,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19742532] [2024-10-11 01:55:59,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19742532] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:59,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518233486] [2024-10-11 01:55:59,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:55:59,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:59,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:59,954 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:59,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 01:56:00,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:56:00,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:56:00,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 01:56:00,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:56:00,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-11 01:56:00,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518233486] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:00,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:00,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 5] total 15 [2024-10-11 01:56:00,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36419668] [2024-10-11 01:56:00,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:00,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 01:56:00,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:00,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 01:56:00,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-10-11 01:56:00,099 INFO L87 Difference]: Start difference. First operand 219 states and 297 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:00,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:56:00,506 INFO L93 Difference]: Finished difference Result 507 states and 748 transitions. [2024-10-11 01:56:00,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 01:56:00,506 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-10-11 01:56:00,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:56:00,508 INFO L225 Difference]: With dead ends: 507 [2024-10-11 01:56:00,508 INFO L226 Difference]: Without dead ends: 444 [2024-10-11 01:56:00,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2024-10-11 01:56:00,509 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 105 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:56:00,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 267 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:56:00,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-10-11 01:56:00,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 275. [2024-10-11 01:56:00,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.364963503649635) internal successors, (374), 274 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:00,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 374 transitions. [2024-10-11 01:56:00,601 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 374 transitions. Word has length 25 [2024-10-11 01:56:00,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:56:00,602 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 374 transitions. [2024-10-11 01:56:00,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:00,602 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 374 transitions. [2024-10-11 01:56:00,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 01:56:00,603 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:56:00,603 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:56:00,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 01:56:00,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 01:56:00,803 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:56:00,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:56:00,804 INFO L85 PathProgramCache]: Analyzing trace with hash -257451315, now seen corresponding path program 6 times [2024-10-11 01:56:00,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:56:00,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198411851] [2024-10-11 01:56:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:56:00,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:56:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 01:56:00,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:56:00,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198411851] [2024-10-11 01:56:00,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198411851] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:56:00,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273974212] [2024-10-11 01:56:00,934 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:56:00,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:00,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:56:00,936 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:56:00,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 01:56:00,987 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-11 01:56:00,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:56:00,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 01:56:00,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:01,038 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 01:56:01,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 01:56:01,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273974212] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:01,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:01,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 20 [2024-10-11 01:56:01,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842753123] [2024-10-11 01:56:01,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:01,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 01:56:01,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:01,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 01:56:01,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2024-10-11 01:56:01,154 INFO L87 Difference]: Start difference. First operand 275 states and 374 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:01,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:56:01,735 INFO L93 Difference]: Finished difference Result 364 states and 490 transitions. [2024-10-11 01:56:01,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-11 01:56:01,735 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-11 01:56:01,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:56:01,737 INFO L225 Difference]: With dead ends: 364 [2024-10-11 01:56:01,737 INFO L226 Difference]: Without dead ends: 298 [2024-10-11 01:56:01,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2024-10-11 01:56:01,738 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 49 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:56:01,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 320 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:56:01,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-10-11 01:56:01,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 259. [2024-10-11 01:56:01,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.3682170542635659) internal successors, (353), 258 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:01,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 353 transitions. [2024-10-11 01:56:01,832 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 353 transitions. Word has length 27 [2024-10-11 01:56:01,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:56:01,832 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 353 transitions. [2024-10-11 01:56:01,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:01,833 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 353 transitions. [2024-10-11 01:56:01,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 01:56:01,833 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:56:01,833 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:56:01,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-11 01:56:02,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:02,038 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:56:02,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:56:02,038 INFO L85 PathProgramCache]: Analyzing trace with hash 228281801, now seen corresponding path program 7 times [2024-10-11 01:56:02,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:56:02,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474760698] [2024-10-11 01:56:02,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:56:02,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:56:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:56:02,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:56:02,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474760698] [2024-10-11 01:56:02,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474760698] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:56:02,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264026830] [2024-10-11 01:56:02,301 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 01:56:02,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:02,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:56:02,303 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:56:02,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 01:56:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:02,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:56:02,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:02,477 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 01:56:02,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:02,615 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-11 01:56:02,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264026830] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:02,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:02,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 27 [2024-10-11 01:56:02,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648788628] [2024-10-11 01:56:02,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:02,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 01:56:02,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:02,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 01:56:02,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2024-10-11 01:56:02,617 INFO L87 Difference]: Start difference. First operand 259 states and 353 transitions. Second operand has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:04,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:56:04,232 INFO L93 Difference]: Finished difference Result 590 states and 908 transitions. [2024-10-11 01:56:04,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-10-11 01:56:04,233 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-10-11 01:56:04,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:56:04,235 INFO L225 Difference]: With dead ends: 590 [2024-10-11 01:56:04,235 INFO L226 Difference]: Without dead ends: 509 [2024-10-11 01:56:04,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 981 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2024-10-11 01:56:04,237 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 189 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 01:56:04,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 255 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 01:56:04,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2024-10-11 01:56:04,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 353. [2024-10-11 01:56:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.3607954545454546) internal successors, (479), 352 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 479 transitions. [2024-10-11 01:56:04,375 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 479 transitions. Word has length 28 [2024-10-11 01:56:04,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:56:04,375 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 479 transitions. [2024-10-11 01:56:04,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 479 transitions. [2024-10-11 01:56:04,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 01:56:04,376 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:56:04,376 INFO L215 NwaCegarLoop]: trace histogram [7, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:56:04,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-11 01:56:04,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:04,577 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:56:04,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:56:04,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1518139608, now seen corresponding path program 3 times [2024-10-11 01:56:04,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:56:04,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130415417] [2024-10-11 01:56:04,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:56:04,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:56:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:56:04,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:56:04,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130415417] [2024-10-11 01:56:04,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130415417] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:56:04,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99169145] [2024-10-11 01:56:04,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:56:04,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:04,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:56:04,773 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:56:04,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 01:56:04,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 01:56:04,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:56:04,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:56:04,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-11 01:56:04,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:05,023 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-11 01:56:05,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99169145] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:05,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:05,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 23 [2024-10-11 01:56:05,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478825686] [2024-10-11 01:56:05,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:05,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 01:56:05,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:05,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 01:56:05,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:56:05,025 INFO L87 Difference]: Start difference. First operand 353 states and 479 transitions. Second operand has 23 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:05,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:56:05,871 INFO L93 Difference]: Finished difference Result 687 states and 980 transitions. [2024-10-11 01:56:05,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-10-11 01:56:05,872 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-10-11 01:56:05,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:56:05,874 INFO L225 Difference]: With dead ends: 687 [2024-10-11 01:56:05,874 INFO L226 Difference]: Without dead ends: 545 [2024-10-11 01:56:05,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=477, Invalid=1973, Unknown=0, NotChecked=0, Total=2450 [2024-10-11 01:56:05,876 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 221 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:56:05,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 340 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:56:05,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-10-11 01:56:06,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 396. [2024-10-11 01:56:06,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 1.3620253164556961) internal successors, (538), 395 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 538 transitions. [2024-10-11 01:56:06,034 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 538 transitions. Word has length 28 [2024-10-11 01:56:06,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:56:06,035 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 538 transitions. [2024-10-11 01:56:06,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:06,035 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 538 transitions. [2024-10-11 01:56:06,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-11 01:56:06,036 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:56:06,036 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:56:06,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-11 01:56:06,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-11 01:56:06,236 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:56:06,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:56:06,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1866772422, now seen corresponding path program 3 times [2024-10-11 01:56:06,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:56:06,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974458161] [2024-10-11 01:56:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:56:06,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:56:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:06,452 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:56:06,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:56:06,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974458161] [2024-10-11 01:56:06,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974458161] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:56:06,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776030929] [2024-10-11 01:56:06,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:56:06,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:06,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:56:06,455 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:56:06,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 01:56:06,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 01:56:06,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:56:06,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 01:56:06,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:56:06,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:06,686 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:56:06,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776030929] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:06,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:06,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-10-11 01:56:06,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131300833] [2024-10-11 01:56:06,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:06,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 01:56:06,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:06,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 01:56:06,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 01:56:06,689 INFO L87 Difference]: Start difference. First operand 396 states and 538 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:07,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:56:07,052 INFO L93 Difference]: Finished difference Result 543 states and 725 transitions. [2024-10-11 01:56:07,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 01:56:07,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-11 01:56:07,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:56:07,055 INFO L225 Difference]: With dead ends: 543 [2024-10-11 01:56:07,055 INFO L226 Difference]: Without dead ends: 518 [2024-10-11 01:56:07,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 20 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 01:56:07,056 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:56:07,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 93 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:56:07,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-10-11 01:56:07,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 403. [2024-10-11 01:56:07,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.3880597014925373) internal successors, (558), 402 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:07,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 558 transitions. [2024-10-11 01:56:07,232 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 558 transitions. Word has length 29 [2024-10-11 01:56:07,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:56:07,232 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 558 transitions. [2024-10-11 01:56:07,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:07,232 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 558 transitions. [2024-10-11 01:56:07,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-11 01:56:07,235 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:56:07,235 INFO L215 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:56:07,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-11 01:56:07,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:07,436 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:56:07,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:56:07,437 INFO L85 PathProgramCache]: Analyzing trace with hash -2144765827, now seen corresponding path program 4 times [2024-10-11 01:56:07,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:56:07,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951448366] [2024-10-11 01:56:07,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:56:07,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:56:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:07,629 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 01:56:07,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:56:07,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951448366] [2024-10-11 01:56:07,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951448366] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:56:07,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244164641] [2024-10-11 01:56:07,630 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:56:07,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:07,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:56:07,632 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:56:07,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-11 01:56:07,689 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:56:07,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:56:07,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-11 01:56:07,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:56:07,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-11 01:56:07,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244164641] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:07,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:07,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 6] total 19 [2024-10-11 01:56:07,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026934577] [2024-10-11 01:56:07,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:07,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 01:56:07,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:07,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 01:56:07,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-10-11 01:56:07,819 INFO L87 Difference]: Start difference. First operand 403 states and 558 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:08,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:56:08,533 INFO L93 Difference]: Finished difference Result 877 states and 1275 transitions. [2024-10-11 01:56:08,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 01:56:08,534 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-10-11 01:56:08,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:56:08,537 INFO L225 Difference]: With dead ends: 877 [2024-10-11 01:56:08,538 INFO L226 Difference]: Without dead ends: 741 [2024-10-11 01:56:08,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=288, Invalid=834, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 01:56:08,539 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 184 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:56:08,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 420 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:56:08,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-10-11 01:56:08,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 470. [2024-10-11 01:56:08,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 1.3667377398720681) internal successors, (641), 469 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:08,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 641 transitions. [2024-10-11 01:56:08,749 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 641 transitions. Word has length 31 [2024-10-11 01:56:08,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:56:08,749 INFO L471 AbstractCegarLoop]: Abstraction has 470 states and 641 transitions. [2024-10-11 01:56:08,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:08,749 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 641 transitions. [2024-10-11 01:56:08,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-11 01:56:08,750 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:56:08,750 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:56:08,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-11 01:56:08,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-11 01:56:08,951 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:56:08,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:56:08,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2125166439, now seen corresponding path program 4 times [2024-10-11 01:56:08,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:56:08,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140385165] [2024-10-11 01:56:08,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:56:08,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:56:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 01:56:09,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:56:09,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140385165] [2024-10-11 01:56:09,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140385165] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:56:09,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263078359] [2024-10-11 01:56:09,155 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:56:09,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:09,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:56:09,158 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:56:09,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-11 01:56:09,212 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:56:09,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:56:09,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-11 01:56:09,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-11 01:56:09,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-11 01:56:09,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263078359] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:09,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:09,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 21 [2024-10-11 01:56:09,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422111772] [2024-10-11 01:56:09,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:09,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 01:56:09,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:09,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 01:56:09,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2024-10-11 01:56:09,547 INFO L87 Difference]: Start difference. First operand 470 states and 641 transitions. Second operand has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:13,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:56:13,793 INFO L93 Difference]: Finished difference Result 1079 states and 1427 transitions. [2024-10-11 01:56:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2024-10-11 01:56:13,794 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-10-11 01:56:13,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:56:13,798 INFO L225 Difference]: With dead ends: 1079 [2024-10-11 01:56:13,798 INFO L226 Difference]: Without dead ends: 961 [2024-10-11 01:56:13,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 55 SyntacticMatches, 10 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8816 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1591, Invalid=21971, Unknown=0, NotChecked=0, Total=23562 [2024-10-11 01:56:13,804 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 248 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:56:13,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 353 Invalid, 2126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-11 01:56:13,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2024-10-11 01:56:14,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 503. [2024-10-11 01:56:14,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 1.3545816733067728) internal successors, (680), 502 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 680 transitions. [2024-10-11 01:56:14,049 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 680 transitions. Word has length 32 [2024-10-11 01:56:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:56:14,049 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 680 transitions. [2024-10-11 01:56:14,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 680 transitions. [2024-10-11 01:56:14,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-11 01:56:14,050 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:56:14,051 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:56:14,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-11 01:56:14,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:14,251 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:56:14,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:56:14,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2109679771, now seen corresponding path program 5 times [2024-10-11 01:56:14,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:56:14,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859758224] [2024-10-11 01:56:14,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:56:14,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:56:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:56:14,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:56:14,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859758224] [2024-10-11 01:56:14,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859758224] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:56:14,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091154368] [2024-10-11 01:56:14,530 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:56:14,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:14,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:56:14,531 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:56:14,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-11 01:56:14,669 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-11 01:56:14,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:56:14,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-11 01:56:14,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:56:14,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-11 01:56:15,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091154368] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:15,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:15,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21, 15] total 39 [2024-10-11 01:56:15,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414779983] [2024-10-11 01:56:15,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:15,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-11 01:56:15,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:15,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-11 01:56:15,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1172, Unknown=0, NotChecked=0, Total=1482 [2024-10-11 01:56:15,213 INFO L87 Difference]: Start difference. First operand 503 states and 680 transitions. Second operand has 39 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 39 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:17,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:56:17,366 INFO L93 Difference]: Finished difference Result 822 states and 1163 transitions. [2024-10-11 01:56:17,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-10-11 01:56:17,366 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 39 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-10-11 01:56:17,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:56:17,369 INFO L225 Difference]: With dead ends: 822 [2024-10-11 01:56:17,369 INFO L226 Difference]: Without dead ends: 720 [2024-10-11 01:56:17,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1960, Invalid=6970, Unknown=0, NotChecked=0, Total=8930 [2024-10-11 01:56:17,371 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 183 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 2196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 01:56:17,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 350 Invalid, 2196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1947 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 01:56:17,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-10-11 01:56:17,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 558. [2024-10-11 01:56:17,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 557 states have (on average 1.3482944344703771) internal successors, (751), 557 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:17,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 751 transitions. [2024-10-11 01:56:17,680 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 751 transitions. Word has length 33 [2024-10-11 01:56:17,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:56:17,680 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 751 transitions. [2024-10-11 01:56:17,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 39 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:17,681 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 751 transitions. [2024-10-11 01:56:17,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-11 01:56:17,682 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:56:17,682 INFO L215 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:56:17,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-11 01:56:17,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-11 01:56:17,883 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:56:17,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:56:17,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1878232294, now seen corresponding path program 6 times [2024-10-11 01:56:17,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:56:17,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977124150] [2024-10-11 01:56:17,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:56:17,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:56:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-11 01:56:18,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:56:18,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977124150] [2024-10-11 01:56:18,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977124150] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:56:18,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835447576] [2024-10-11 01:56:18,094 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:56:18,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:18,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:56:18,096 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:56:18,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-11 01:56:18,152 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-11 01:56:18,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:56:18,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 01:56:18,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-11 01:56:18,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-10-11 01:56:18,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835447576] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:18,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:18,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 6] total 25 [2024-10-11 01:56:18,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386882968] [2024-10-11 01:56:18,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:18,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 01:56:18,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:18,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 01:56:18,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2024-10-11 01:56:18,409 INFO L87 Difference]: Start difference. First operand 558 states and 751 transitions. Second operand has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:19,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:56:19,856 INFO L93 Difference]: Finished difference Result 1213 states and 1720 transitions. [2024-10-11 01:56:19,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-10-11 01:56:19,857 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-10-11 01:56:19,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:56:19,860 INFO L225 Difference]: With dead ends: 1213 [2024-10-11 01:56:19,860 INFO L226 Difference]: Without dead ends: 985 [2024-10-11 01:56:19,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=457, Invalid=1705, Unknown=0, NotChecked=0, Total=2162 [2024-10-11 01:56:19,861 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 217 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 01:56:19,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 604 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 01:56:19,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2024-10-11 01:56:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 615. [2024-10-11 01:56:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 1.3713355048859934) internal successors, (842), 614 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 842 transitions. [2024-10-11 01:56:20,282 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 842 transitions. Word has length 33 [2024-10-11 01:56:20,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:56:20,283 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 842 transitions. [2024-10-11 01:56:20,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:20,283 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 842 transitions. [2024-10-11 01:56:20,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 01:56:20,284 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:56:20,284 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:56:20,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-11 01:56:20,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-11 01:56:20,489 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:56:20,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:56:20,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1251258075, now seen corresponding path program 7 times [2024-10-11 01:56:20,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:56:20,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702005000] [2024-10-11 01:56:20,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:56:20,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:56:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:20,719 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-11 01:56:20,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:56:20,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702005000] [2024-10-11 01:56:20,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702005000] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:56:20,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923304717] [2024-10-11 01:56:20,720 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 01:56:20,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:20,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:56:20,722 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:56:20,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-11 01:56:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:20,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 01:56:20,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:20,848 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 01:56:20,848 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 01:56:20,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923304717] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:20,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:20,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-10-11 01:56:20,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345078501] [2024-10-11 01:56:20,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:20,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 01:56:20,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:20,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 01:56:20,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 01:56:20,929 INFO L87 Difference]: Start difference. First operand 615 states and 842 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:21,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:56:21,612 INFO L93 Difference]: Finished difference Result 847 states and 1118 transitions. [2024-10-11 01:56:21,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 01:56:21,612 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-10-11 01:56:21,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:56:21,615 INFO L225 Difference]: With dead ends: 847 [2024-10-11 01:56:21,615 INFO L226 Difference]: Without dead ends: 817 [2024-10-11 01:56:21,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 66 SyntacticMatches, 15 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 01:56:21,616 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:56:21,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 124 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:56:21,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2024-10-11 01:56:21,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 627. [2024-10-11 01:56:21,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 1.376996805111821) internal successors, (862), 626 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:21,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 862 transitions. [2024-10-11 01:56:21,994 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 862 transitions. Word has length 35 [2024-10-11 01:56:21,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:56:21,994 INFO L471 AbstractCegarLoop]: Abstraction has 627 states and 862 transitions. [2024-10-11 01:56:21,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:21,994 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 862 transitions. [2024-10-11 01:56:21,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 01:56:21,996 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:56:21,996 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:56:22,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-10-11 01:56:22,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-11 01:56:22,196 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:56:22,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:56:22,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1234771652, now seen corresponding path program 8 times [2024-10-11 01:56:22,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:56:22,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342692400] [2024-10-11 01:56:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:56:22,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:56:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-11 01:56:22,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:56:22,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342692400] [2024-10-11 01:56:22,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342692400] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:56:22,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553548287] [2024-10-11 01:56:22,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:56:22,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:22,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:56:22,461 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:56:22,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-11 01:56:22,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:56:22,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:56:22,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-11 01:56:22,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 01:56:22,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:22,689 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 01:56:22,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553548287] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:22,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:22,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 18 [2024-10-11 01:56:22,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300574397] [2024-10-11 01:56:22,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:22,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 01:56:22,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:22,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 01:56:22,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-10-11 01:56:22,691 INFO L87 Difference]: Start difference. First operand 627 states and 862 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:24,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:56:24,250 INFO L93 Difference]: Finished difference Result 1272 states and 1696 transitions. [2024-10-11 01:56:24,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-11 01:56:24,251 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-10-11 01:56:24,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:56:24,254 INFO L225 Difference]: With dead ends: 1272 [2024-10-11 01:56:24,254 INFO L226 Difference]: Without dead ends: 1177 [2024-10-11 01:56:24,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2024-10-11 01:56:24,255 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 96 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:56:24,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 161 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:56:24,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2024-10-11 01:56:24,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 751. [2024-10-11 01:56:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 1.3453333333333333) internal successors, (1009), 750 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:24,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1009 transitions. [2024-10-11 01:56:24,721 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1009 transitions. Word has length 35 [2024-10-11 01:56:24,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:56:24,721 INFO L471 AbstractCegarLoop]: Abstraction has 751 states and 1009 transitions. [2024-10-11 01:56:24,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:24,721 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1009 transitions. [2024-10-11 01:56:24,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-11 01:56:24,726 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:56:24,726 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:56:24,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-10-11 01:56:24,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:24,931 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:56:24,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:56:24,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1594804439, now seen corresponding path program 9 times [2024-10-11 01:56:24,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:56:24,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260579463] [2024-10-11 01:56:24,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:56:24,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:56:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:56:25,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:56:25,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260579463] [2024-10-11 01:56:25,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260579463] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:56:25,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760327211] [2024-10-11 01:56:25,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:56:25,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:25,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:56:25,240 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:56:25,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-11 01:56:25,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-11 01:56:25,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:56:25,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 01:56:25,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:25,503 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 44 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-11 01:56:25,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:25,817 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 44 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-11 01:56:25,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760327211] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:25,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:25,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 10] total 27 [2024-10-11 01:56:25,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50840100] [2024-10-11 01:56:25,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:25,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 01:56:25,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:25,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 01:56:25,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=648, Unknown=0, NotChecked=0, Total=702 [2024-10-11 01:56:25,819 INFO L87 Difference]: Start difference. First operand 751 states and 1009 transitions. Second operand has 27 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 27 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:37,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:56:37,252 INFO L93 Difference]: Finished difference Result 1574 states and 2080 transitions. [2024-10-11 01:56:37,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 279 states. [2024-10-11 01:56:37,252 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 27 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-10-11 01:56:37,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:56:37,257 INFO L225 Difference]: With dead ends: 1574 [2024-10-11 01:56:37,257 INFO L226 Difference]: Without dead ends: 1409 [2024-10-11 01:56:37,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 61 SyntacticMatches, 14 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36482 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=4735, Invalid=81995, Unknown=0, NotChecked=0, Total=86730 [2024-10-11 01:56:37,263 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 390 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 4173 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 4705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 4173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:56:37,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 287 Invalid, 4705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 4173 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-11 01:56:37,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2024-10-11 01:56:37,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 675. [2024-10-11 01:56:37,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 1.3412462908011868) internal successors, (904), 674 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:37,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 904 transitions. [2024-10-11 01:56:37,806 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 904 transitions. Word has length 36 [2024-10-11 01:56:37,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:56:37,806 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 904 transitions. [2024-10-11 01:56:37,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 27 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:37,806 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 904 transitions. [2024-10-11 01:56:37,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 01:56:37,807 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:56:37,807 INFO L215 NwaCegarLoop]: trace histogram [10, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:56:37,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-10-11 01:56:38,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-11 01:56:38,008 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:56:38,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:56:38,009 INFO L85 PathProgramCache]: Analyzing trace with hash -872542230, now seen corresponding path program 10 times [2024-10-11 01:56:38,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:56:38,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007460606] [2024-10-11 01:56:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:56:38,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:56:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-11 01:56:38,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:56:38,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007460606] [2024-10-11 01:56:38,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007460606] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:56:38,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000123634] [2024-10-11 01:56:38,223 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:56:38,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:38,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:56:38,224 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:56:38,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-11 01:56:38,275 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:56:38,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:56:38,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-11 01:56:38,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:38,353 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-11 01:56:38,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:38,567 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-11 01:56:38,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000123634] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:38,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:38,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 10] total 29 [2024-10-11 01:56:38,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466617034] [2024-10-11 01:56:38,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:38,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-11 01:56:38,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:38,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-11 01:56:38,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2024-10-11 01:56:38,569 INFO L87 Difference]: Start difference. First operand 675 states and 904 transitions. Second operand has 29 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 29 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:40,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:56:40,783 INFO L93 Difference]: Finished difference Result 1254 states and 1750 transitions. [2024-10-11 01:56:40,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-10-11 01:56:40,783 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 29 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-11 01:56:40,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:56:40,786 INFO L225 Difference]: With dead ends: 1254 [2024-10-11 01:56:40,787 INFO L226 Difference]: Without dead ends: 814 [2024-10-11 01:56:40,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=542, Invalid=5310, Unknown=0, NotChecked=0, Total=5852 [2024-10-11 01:56:40,788 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 117 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 01:56:40,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 729 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 01:56:40,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2024-10-11 01:56:41,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 663. [2024-10-11 01:56:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 1.350453172205438) internal successors, (894), 662 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:41,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 894 transitions. [2024-10-11 01:56:41,242 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 894 transitions. Word has length 37 [2024-10-11 01:56:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:56:41,242 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 894 transitions. [2024-10-11 01:56:41,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 29 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:41,242 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 894 transitions. [2024-10-11 01:56:41,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-11 01:56:41,243 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:56:41,243 INFO L215 NwaCegarLoop]: trace histogram [10, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:56:41,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-11 01:56:41,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:41,444 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:56:41,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:56:41,445 INFO L85 PathProgramCache]: Analyzing trace with hash 479264330, now seen corresponding path program 3 times [2024-10-11 01:56:41,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:56:41,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417111229] [2024-10-11 01:56:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:56:41,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:56:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 18 proven. 72 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-11 01:56:41,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:56:41,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417111229] [2024-10-11 01:56:41,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417111229] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:56:41,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773581096] [2024-10-11 01:56:41,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:56:41,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:41,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:56:41,731 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:56:41,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-11 01:56:41,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-11 01:56:41,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:56:41,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 01:56:41,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-10-11 01:56:42,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-10-11 01:56:42,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773581096] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:42,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:42,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 38 [2024-10-11 01:56:42,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819122484] [2024-10-11 01:56:42,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:42,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-11 01:56:42,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:42,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-11 01:56:42,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1166, Unknown=0, NotChecked=0, Total=1406 [2024-10-11 01:56:42,270 INFO L87 Difference]: Start difference. First operand 663 states and 894 transitions. Second operand has 38 states, 38 states have (on average 1.631578947368421) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:47,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:56:47,265 INFO L93 Difference]: Finished difference Result 1521 states and 2268 transitions. [2024-10-11 01:56:47,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-10-11 01:56:47,266 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.631578947368421) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-11 01:56:47,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:56:47,270 INFO L225 Difference]: With dead ends: 1521 [2024-10-11 01:56:47,270 INFO L226 Difference]: Without dead ends: 1393 [2024-10-11 01:56:47,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5330 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3314, Invalid=14776, Unknown=0, NotChecked=0, Total=18090 [2024-10-11 01:56:47,272 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 501 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 4293 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 4644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 4293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-11 01:56:47,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 881 Invalid, 4644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 4293 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-11 01:56:47,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2024-10-11 01:56:47,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 794. [2024-10-11 01:56:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 793 states have (on average 1.3593947036569987) internal successors, (1078), 793 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1078 transitions. [2024-10-11 01:56:47,896 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1078 transitions. Word has length 38 [2024-10-11 01:56:47,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:56:47,896 INFO L471 AbstractCegarLoop]: Abstraction has 794 states and 1078 transitions. [2024-10-11 01:56:47,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.631578947368421) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:47,896 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1078 transitions. [2024-10-11 01:56:47,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-11 01:56:47,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:56:47,898 INFO L215 NwaCegarLoop]: trace histogram [11, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:56:47,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-10-11 01:56:48,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:48,098 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:56:48,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:56:48,099 INFO L85 PathProgramCache]: Analyzing trace with hash 69299768, now seen corresponding path program 11 times [2024-10-11 01:56:48,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:56:48,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832552526] [2024-10-11 01:56:48,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:56:48,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:56:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-11 01:56:48,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:56:48,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832552526] [2024-10-11 01:56:48,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832552526] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:56:48,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413470879] [2024-10-11 01:56:48,382 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:56:48,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:48,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:56:48,384 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:56:48,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-11 01:56:48,540 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-10-11 01:56:48,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:56:48,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-10-11 01:56:48,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-11 01:56:48,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-10-11 01:56:48,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413470879] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:48,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:48,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 13] total 38 [2024-10-11 01:56:48,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601306220] [2024-10-11 01:56:48,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:48,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-11 01:56:48,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:48,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-11 01:56:48,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406 [2024-10-11 01:56:48,984 INFO L87 Difference]: Start difference. First operand 794 states and 1078 transitions. Second operand has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 38 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:51,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:56:51,640 INFO L93 Difference]: Finished difference Result 1595 states and 2231 transitions. [2024-10-11 01:56:51,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-10-11 01:56:51,641 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 38 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-11 01:56:51,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:56:51,645 INFO L225 Difference]: With dead ends: 1595 [2024-10-11 01:56:51,645 INFO L226 Difference]: Without dead ends: 1133 [2024-10-11 01:56:51,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1664 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1156, Invalid=5650, Unknown=0, NotChecked=0, Total=6806 [2024-10-11 01:56:51,646 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 306 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 01:56:51,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 808 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 01:56:51,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2024-10-11 01:56:52,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 825. [2024-10-11 01:56:52,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 824 states have (on average 1.3470873786407767) internal successors, (1110), 824 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1110 transitions. [2024-10-11 01:56:52,307 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1110 transitions. Word has length 38 [2024-10-11 01:56:52,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:56:52,307 INFO L471 AbstractCegarLoop]: Abstraction has 825 states and 1110 transitions. [2024-10-11 01:56:52,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 38 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:52,307 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1110 transitions. [2024-10-11 01:56:52,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-11 01:56:52,308 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:56:52,309 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:56:52,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-10-11 01:56:52,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:52,509 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:56:52,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:56:52,510 INFO L85 PathProgramCache]: Analyzing trace with hash -431456614, now seen corresponding path program 12 times [2024-10-11 01:56:52,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:56:52,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784799915] [2024-10-11 01:56:52,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:56:52,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:56:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 01:56:52,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:56:52,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784799915] [2024-10-11 01:56:52,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784799915] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:56:52,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833278667] [2024-10-11 01:56:52,788 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:56:52,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:52,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:56:52,789 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:56:52,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-11 01:56:52,851 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-11 01:56:52,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:56:52,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-11 01:56:52,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 01:56:52,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:53,084 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 01:56:53,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833278667] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:53,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:53,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2024-10-11 01:56:53,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183995585] [2024-10-11 01:56:53,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:53,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 01:56:53,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:53,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 01:56:53,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:56:53,086 INFO L87 Difference]: Start difference. First operand 825 states and 1110 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:54,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:56:54,607 INFO L93 Difference]: Finished difference Result 1402 states and 1814 transitions. [2024-10-11 01:56:54,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 01:56:54,608 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-10-11 01:56:54,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:56:54,612 INFO L225 Difference]: With dead ends: 1402 [2024-10-11 01:56:54,613 INFO L226 Difference]: Without dead ends: 1179 [2024-10-11 01:56:54,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 68 SyntacticMatches, 28 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:56:54,614 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:56:54,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 179 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:56:54,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2024-10-11 01:56:55,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 798. [2024-10-11 01:56:55,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 1.358845671267252) internal successors, (1083), 797 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:55,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1083 transitions. [2024-10-11 01:56:55,313 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1083 transitions. Word has length 41 [2024-10-11 01:56:55,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:56:55,313 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 1083 transitions. [2024-10-11 01:56:55,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:55,313 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1083 transitions. [2024-10-11 01:56:55,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-11 01:56:55,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:56:55,315 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:56:55,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-10-11 01:56:55,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:55,520 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:56:55,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:56:55,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1093480613, now seen corresponding path program 13 times [2024-10-11 01:56:55,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:56:55,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265136298] [2024-10-11 01:56:55,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:56:55,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:56:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-11 01:56:55,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:56:55,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265136298] [2024-10-11 01:56:55,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265136298] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:56:55,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039475399] [2024-10-11 01:56:55,852 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 01:56:55,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:55,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:56:55,854 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:56:55,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-11 01:56:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:55,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-11 01:56:55,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:56,058 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-11 01:56:56,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-11 01:56:56,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039475399] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:56,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:56,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 21 [2024-10-11 01:56:56,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597603628] [2024-10-11 01:56:56,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:56,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 01:56:56,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:56,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 01:56:56,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-10-11 01:56:56,109 INFO L87 Difference]: Start difference. First operand 798 states and 1083 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:57:00,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 01:57:09,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []