./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/in-de31.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/in-de31.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 28f1f7a35f3c64149ac63836a12126d2f43ea1d4c4384507ba9d3ae156113818 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 14:10:17,651 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 14:10:17,716 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 14:10:17,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 14:10:17,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 14:10:17,765 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 14:10:17,766 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 14:10:17,767 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 14:10:17,767 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 14:10:17,767 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 14:10:17,768 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 14:10:17,768 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 14:10:17,768 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 14:10:17,769 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 14:10:17,769 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 14:10:17,769 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 14:10:17,770 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 14:10:17,770 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 14:10:17,773 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 14:10:17,773 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 14:10:17,778 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 14:10:17,778 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 14:10:17,779 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 14:10:17,779 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 14:10:17,779 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 14:10:17,779 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 14:10:17,780 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 14:10:17,780 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 14:10:17,780 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 14:10:17,780 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 14:10:17,781 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 14:10:17,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 14:10:17,781 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:10:17,781 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 14:10:17,781 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 14:10:17,782 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 14:10:17,782 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 14:10:17,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 14:10:17,782 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 14:10:17,782 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 14:10:17,782 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 14:10:17,783 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 14:10:17,783 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28f1f7a35f3c64149ac63836a12126d2f43ea1d4c4384507ba9d3ae156113818 [2024-11-08 14:10:18,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 14:10:18,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 14:10:18,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 14:10:18,069 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 14:10:18,069 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 14:10:18,070 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/in-de31.c [2024-11-08 14:10:19,465 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 14:10:19,669 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 14:10:19,670 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de31.c [2024-11-08 14:10:19,682 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/178027529/0b050422538645cd877a3b6e5d1e565b/FLAGd10aa8535 [2024-11-08 14:10:20,056 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/178027529/0b050422538645cd877a3b6e5d1e565b [2024-11-08 14:10:20,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 14:10:20,060 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 14:10:20,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 14:10:20,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 14:10:20,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 14:10:20,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:10:20" (1/1) ... [2024-11-08 14:10:20,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d06e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:10:20, skipping insertion in model container [2024-11-08 14:10:20,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:10:20" (1/1) ... [2024-11-08 14:10:20,087 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 14:10:20,259 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de31.c[368,381] [2024-11-08 14:10:20,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:10:20,283 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 14:10:20,293 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de31.c[368,381] [2024-11-08 14:10:20,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:10:20,311 INFO L204 MainTranslator]: Completed translation [2024-11-08 14:10:20,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:10:20 WrapperNode [2024-11-08 14:10:20,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 14:10:20,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 14:10:20,313 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 14:10:20,313 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 14:10:20,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:10:20" (1/1) ... [2024-11-08 14:10:20,324 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:10:20" (1/1) ... [2024-11-08 14:10:20,340 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-11-08 14:10:20,341 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 14:10:20,342 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 14:10:20,342 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 14:10:20,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 14:10:20,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:10:20" (1/1) ... [2024-11-08 14:10:20,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:10:20" (1/1) ... [2024-11-08 14:10:20,352 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:10:20" (1/1) ... [2024-11-08 14:10:20,361 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]. [2024-11-08 14:10:20,361 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:10:20" (1/1) ... [2024-11-08 14:10:20,362 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:10:20" (1/1) ... [2024-11-08 14:10:20,364 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:10:20" (1/1) ... [2024-11-08 14:10:20,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:10:20" (1/1) ... [2024-11-08 14:10:20,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:10:20" (1/1) ... [2024-11-08 14:10:20,368 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:10:20" (1/1) ... [2024-11-08 14:10:20,369 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 14:10:20,370 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 14:10:20,370 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 14:10:20,370 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 14:10:20,371 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:10:20" (1/1) ... [2024-11-08 14:10:20,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:10:20,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:10:20,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 14:10:20,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 14:10:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 14:10:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 14:10:20,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 14:10:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 14:10:20,544 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 14:10:20,548 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 14:10:20,734 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-08 14:10:20,735 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 14:10:20,747 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 14:10:20,748 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 14:10:20,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:10:20 BoogieIcfgContainer [2024-11-08 14:10:20,749 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 14:10:20,751 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 14:10:20,753 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 14:10:20,756 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 14:10:20,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 02:10:20" (1/3) ... [2024-11-08 14:10:20,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb8f768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:10:20, skipping insertion in model container [2024-11-08 14:10:20,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:10:20" (2/3) ... [2024-11-08 14:10:20,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb8f768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:10:20, skipping insertion in model container [2024-11-08 14:10:20,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:10:20" (3/3) ... [2024-11-08 14:10:20,759 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de31.c [2024-11-08 14:10:20,776 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 14:10:20,776 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 14:10:20,846 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 14:10:20,856 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;@3a76613e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 14:10:20,857 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 14:10:20,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:20,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 14:10:20,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:10:20,869 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:10:20,870 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:10:20,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:10:20,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1157484939, now seen corresponding path program 1 times [2024-11-08 14:10:20,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:10:20,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773289720] [2024-11-08 14:10:20,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:10:20,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:10:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:21,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:21,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:10:21,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773289720] [2024-11-08 14:10:21,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773289720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:10:21,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:10:21,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 14:10:21,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010227354] [2024-11-08 14:10:21,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:10:21,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 14:10:21,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:10:21,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 14:10:21,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:10:21,511 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 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 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:21,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:10:21,615 INFO L93 Difference]: Finished difference Result 31 states and 48 transitions. [2024-11-08 14:10:21,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 14:10:21,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-08 14:10:21,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:10:21,625 INFO L225 Difference]: With dead ends: 31 [2024-11-08 14:10:21,626 INFO L226 Difference]: Without dead ends: 11 [2024-11-08 14:10:21,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-08 14:10:21,632 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:10:21,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 36 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:10:21,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-11-08 14:10:21,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-11-08 14:10:21,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:21,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2024-11-08 14:10:21,670 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 9 [2024-11-08 14:10:21,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:10:21,671 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2024-11-08 14:10:21,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:21,672 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2024-11-08 14:10:21,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 14:10:21,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:10:21,674 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:10:21,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 14:10:21,675 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:10:21,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:10:21,676 INFO L85 PathProgramCache]: Analyzing trace with hash 722526704, now seen corresponding path program 1 times [2024-11-08 14:10:21,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:10:21,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805618942] [2024-11-08 14:10:21,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:10:21,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:10:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:21,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:10:21,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805618942] [2024-11-08 14:10:21,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805618942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:10:21,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334574805] [2024-11-08 14:10:21,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:10:21,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:21,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:10:21,809 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:10:21,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 14:10:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:21,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 14:10:21,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:10:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:21,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:10:21,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:21,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334574805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:10:21,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:10:21,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-08 14:10:21,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546994798] [2024-11-08 14:10:21,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:10:21,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 14:10:21,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:10:21,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 14:10:21,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-08 14:10:21,983 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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) [2024-11-08 14:10:22,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:10:22,136 INFO L93 Difference]: Finished difference Result 33 states and 49 transitions. [2024-11-08 14:10:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 14:10:22,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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) Word has length 10 [2024-11-08 14:10:22,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:10:22,139 INFO L225 Difference]: With dead ends: 33 [2024-11-08 14:10:22,139 INFO L226 Difference]: Without dead ends: 28 [2024-11-08 14:10:22,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-08 14:10:22,142 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 17 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:10:22,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 36 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:10:22,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-08 14:10:22,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2024-11-08 14:10:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2024-11-08 14:10:22,153 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 10 [2024-11-08 14:10:22,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:10:22,153 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2024-11-08 14:10:22,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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) [2024-11-08 14:10:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2024-11-08 14:10:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 14:10:22,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:10:22,154 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:10:22,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 14:10:22,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:22,355 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:10:22,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:10:22,356 INFO L85 PathProgramCache]: Analyzing trace with hash 19581631, now seen corresponding path program 1 times [2024-11-08 14:10:22,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:10:22,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123239750] [2024-11-08 14:10:22,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:10:22,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:10:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:22,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:10:22,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123239750] [2024-11-08 14:10:22,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123239750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:10:22,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495499129] [2024-11-08 14:10:22,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:10:22,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:22,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:10:22,719 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:10:22,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 14:10:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:22,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 14:10:22,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:10:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:23,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:10:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:23,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495499129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:10:23,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:10:23,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2024-11-08 14:10:23,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098987839] [2024-11-08 14:10:23,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:10:23,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 14:10:23,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:10:23,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 14:10:23,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-08 14:10:23,215 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:10:23,677 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2024-11-08 14:10:23,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 14:10:23,677 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 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 [2024-11-08 14:10:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:10:23,678 INFO L225 Difference]: With dead ends: 40 [2024-11-08 14:10:23,678 INFO L226 Difference]: Without dead ends: 25 [2024-11-08 14:10:23,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2024-11-08 14:10:23,680 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 30 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:10:23,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 28 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:10:23,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-08 14:10:23,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2024-11-08 14:10:23,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:23,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-11-08 14:10:23,688 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 12 [2024-11-08 14:10:23,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:10:23,689 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-08 14:10:23,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:23,689 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2024-11-08 14:10:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 14:10:23,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:10:23,689 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:10:23,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 14:10:23,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-08 14:10:23,890 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:10:23,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:10:23,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1563380427, now seen corresponding path program 2 times [2024-11-08 14:10:23,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:10:23,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884545039] [2024-11-08 14:10:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:10:23,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:10:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:24,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:24,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:10:24,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884545039] [2024-11-08 14:10:24,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884545039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:10:24,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304243627] [2024-11-08 14:10:24,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:10:24,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:24,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:10:24,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:10:24,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 14:10:24,071 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:10:24,072 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:10:24,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 14:10:24,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:10:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:24,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:10:24,206 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:24,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304243627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:10:24,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:10:24,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-08 14:10:24,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948480135] [2024-11-08 14:10:24,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:10:24,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 14:10:24,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:10:24,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 14:10:24,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-08 14:10:24,208 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:24,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:10:24,773 INFO L93 Difference]: Finished difference Result 71 states and 112 transitions. [2024-11-08 14:10:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 14:10:24,774 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-08 14:10:24,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:10:24,775 INFO L225 Difference]: With dead ends: 71 [2024-11-08 14:10:24,775 INFO L226 Difference]: Without dead ends: 66 [2024-11-08 14:10:24,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2024-11-08 14:10:24,776 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 133 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:10:24,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 78 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:10:24,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-08 14:10:24,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 39. [2024-11-08 14:10:24,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:24,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2024-11-08 14:10:24,790 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 13 [2024-11-08 14:10:24,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:10:24,790 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2024-11-08 14:10:24,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:24,791 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2024-11-08 14:10:24,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 14:10:24,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:10:24,792 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:10:24,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 14:10:24,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:24,992 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:10:24,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:10:24,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1098222449, now seen corresponding path program 2 times [2024-11-08 14:10:24,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:10:24,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510387417] [2024-11-08 14:10:24,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:10:24,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:10:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 14:10:25,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:10:25,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510387417] [2024-11-08 14:10:25,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510387417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:10:25,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001080932] [2024-11-08 14:10:25,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:10:25,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:25,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:10:25,076 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:10:25,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 14:10:25,116 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:10:25,116 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:10:25,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 14:10:25,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:10:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 14:10:25,148 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:10:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 14:10:25,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001080932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:10:25,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:10:25,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-08 14:10:25,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228842591] [2024-11-08 14:10:25,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:10:25,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 14:10:25,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:10:25,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 14:10:25,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-08 14:10:25,217 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:25,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:10:25,336 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2024-11-08 14:10:25,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 14:10:25,337 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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 14 [2024-11-08 14:10:25,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:10:25,338 INFO L225 Difference]: With dead ends: 65 [2024-11-08 14:10:25,338 INFO L226 Difference]: Without dead ends: 55 [2024-11-08 14:10:25,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-08 14:10:25,339 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:10:25,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 38 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:10:25,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-08 14:10:25,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2024-11-08 14:10:25,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:25,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2024-11-08 14:10:25,357 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 14 [2024-11-08 14:10:25,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:10:25,358 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2024-11-08 14:10:25,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:25,358 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2024-11-08 14:10:25,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 14:10:25,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:10:25,359 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:10:25,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 14:10:25,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:25,560 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:10:25,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:10:25,561 INFO L85 PathProgramCache]: Analyzing trace with hash 854515253, now seen corresponding path program 3 times [2024-11-08 14:10:25,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:10:25,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243989078] [2024-11-08 14:10:25,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:10:25,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:10:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:25,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:10:25,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243989078] [2024-11-08 14:10:25,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243989078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:10:25,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440299852] [2024-11-08 14:10:25,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:10:25,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:25,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:10:25,990 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:10:25,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 14:10:26,046 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 14:10:26,047 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:10:26,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-08 14:10:26,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:10:26,302 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:26,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:10:26,629 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:26,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440299852] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:10:26,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:10:26,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2024-11-08 14:10:26,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453531982] [2024-11-08 14:10:26,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:10:26,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 14:10:26,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:10:26,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 14:10:26,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2024-11-08 14:10:26,632 INFO L87 Difference]: Start difference. First operand 46 states and 64 transitions. Second operand has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 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) [2024-11-08 14:10:27,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:10:27,948 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2024-11-08 14:10:27,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-08 14:10:27,948 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 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 15 [2024-11-08 14:10:27,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:10:27,949 INFO L225 Difference]: With dead ends: 86 [2024-11-08 14:10:27,949 INFO L226 Difference]: Without dead ends: 65 [2024-11-08 14:10:27,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=267, Invalid=1625, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 14:10:27,951 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 26 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 14:10:27,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 70 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 14:10:27,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-08 14:10:27,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 46. [2024-11-08 14:10:27,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4) internal successors, (63), 45 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:27,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2024-11-08 14:10:27,969 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 15 [2024-11-08 14:10:27,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:10:27,969 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2024-11-08 14:10:27,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 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) [2024-11-08 14:10:27,969 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2024-11-08 14:10:27,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 14:10:27,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:10:27,970 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:10:27,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 14:10:28,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:28,171 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:10:28,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:10:28,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1966551549, now seen corresponding path program 4 times [2024-11-08 14:10:28,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:10:28,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40917619] [2024-11-08 14:10:28,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:10:28,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:10:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 14:10:28,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:10:28,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40917619] [2024-11-08 14:10:28,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40917619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:10:28,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4699197] [2024-11-08 14:10:28,265 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 14:10:28,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:28,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:10:28,267 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:10:28,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 14:10:28,308 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 14:10:28,308 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:10:28,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 14:10:28,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:10:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 14:10:28,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:10:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 14:10:28,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4699197] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:10:28,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:10:28,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2024-11-08 14:10:28,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902275832] [2024-11-08 14:10:28,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:10:28,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 14:10:28,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:10:28,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 14:10:28,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-08 14:10:28,472 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:28,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:10:28,714 INFO L93 Difference]: Finished difference Result 77 states and 105 transitions. [2024-11-08 14:10:28,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 14:10:28,714 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-08 14:10:28,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:10:28,715 INFO L225 Difference]: With dead ends: 77 [2024-11-08 14:10:28,715 INFO L226 Difference]: Without dead ends: 62 [2024-11-08 14:10:28,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-11-08 14:10:28,717 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:10:28,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 49 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:10:28,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-08 14:10:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2024-11-08 14:10:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.38) internal successors, (69), 50 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) [2024-11-08 14:10:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2024-11-08 14:10:28,744 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 17 [2024-11-08 14:10:28,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:10:28,745 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2024-11-08 14:10:28,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:28,746 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2024-11-08 14:10:28,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 14:10:28,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:10:28,747 INFO L215 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:10:28,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 14:10:28,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:28,947 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:10:28,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:10:28,948 INFO L85 PathProgramCache]: Analyzing trace with hash -73381852, now seen corresponding path program 5 times [2024-11-08 14:10:28,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:10:28,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228309808] [2024-11-08 14:10:28,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:10:28,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:10:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 14:10:29,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:10:29,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228309808] [2024-11-08 14:10:29,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228309808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:10:29,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061954258] [2024-11-08 14:10:29,080 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 14:10:29,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:29,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:10:29,082 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:10:29,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 14:10:29,124 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-08 14:10:29,124 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:10:29,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 14:10:29,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:10:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 14:10:29,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:10:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 14:10:29,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061954258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:10:29,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:10:29,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2024-11-08 14:10:29,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031113121] [2024-11-08 14:10:29,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:10:29,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 14:10:29,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:10:29,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 14:10:29,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-11-08 14:10:29,316 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:31,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:10:31,200 INFO L93 Difference]: Finished difference Result 147 states and 216 transitions. [2024-11-08 14:10:31,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-08 14:10:31,201 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-08 14:10:31,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:10:31,202 INFO L225 Difference]: With dead ends: 147 [2024-11-08 14:10:31,202 INFO L226 Difference]: Without dead ends: 138 [2024-11-08 14:10:31,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1353, Invalid=3617, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 14:10:31,205 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 223 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:10:31,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 125 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 14:10:31,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-08 14:10:31,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 71. [2024-11-08 14:10:31,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4) internal successors, (98), 70 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 98 transitions. [2024-11-08 14:10:31,247 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 98 transitions. Word has length 17 [2024-11-08 14:10:31,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:10:31,247 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 98 transitions. [2024-11-08 14:10:31,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:31,247 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 98 transitions. [2024-11-08 14:10:31,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 14:10:31,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:10:31,248 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:10:31,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 14:10:31,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:31,449 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:10:31,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:10:31,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1333529985, now seen corresponding path program 6 times [2024-11-08 14:10:31,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:10:31,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074643760] [2024-11-08 14:10:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:10:31,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:10:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:31,881 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:31,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:10:31,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074643760] [2024-11-08 14:10:31,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074643760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:10:31,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029506305] [2024-11-08 14:10:31,882 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 14:10:31,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:31,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:10:31,883 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:10:31,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 14:10:31,934 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-08 14:10:31,934 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:10:31,935 WARN L253 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-08 14:10:31,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:10:32,419 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:32,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:10:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:32,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029506305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:10:32,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:10:32,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 33 [2024-11-08 14:10:32,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744157846] [2024-11-08 14:10:32,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:10:32,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 14:10:32,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:10:32,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 14:10:32,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 14:10:32,986 INFO L87 Difference]: Start difference. First operand 71 states and 98 transitions. Second operand has 33 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 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) [2024-11-08 14:10:34,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:10:34,736 INFO L93 Difference]: Finished difference Result 122 states and 158 transitions. [2024-11-08 14:10:34,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-08 14:10:34,737 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 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) Word has length 18 [2024-11-08 14:10:34,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:10:34,738 INFO L225 Difference]: With dead ends: 122 [2024-11-08 14:10:34,738 INFO L226 Difference]: Without dead ends: 96 [2024-11-08 14:10:34,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=353, Invalid=2509, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 14:10:34,740 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 41 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 14:10:34,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 90 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 14:10:34,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-08 14:10:34,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2024-11-08 14:10:34,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.3768115942028984) internal successors, (95), 69 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:34,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 95 transitions. [2024-11-08 14:10:34,774 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 95 transitions. Word has length 18 [2024-11-08 14:10:34,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:10:34,774 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 95 transitions. [2024-11-08 14:10:34,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 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) [2024-11-08 14:10:34,775 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 95 transitions. [2024-11-08 14:10:34,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 14:10:34,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:10:34,776 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:10:34,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 14:10:34,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-08 14:10:34,977 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:10:34,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:10:34,977 INFO L85 PathProgramCache]: Analyzing trace with hash 159423631, now seen corresponding path program 7 times [2024-11-08 14:10:34,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:10:34,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535222371] [2024-11-08 14:10:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:10:34,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:10:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 14:10:35,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:10:35,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535222371] [2024-11-08 14:10:35,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535222371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:10:35,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399715390] [2024-11-08 14:10:35,150 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 14:10:35,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:35,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:10:35,151 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:10:35,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 14:10:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:35,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 14:10:35,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:10:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 14:10:35,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:10:35,389 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 14:10:35,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399715390] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:10:35,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:10:35,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2024-11-08 14:10:35,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198496556] [2024-11-08 14:10:35,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:10:35,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 14:10:35,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:10:35,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 14:10:35,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-11-08 14:10:35,392 INFO L87 Difference]: Start difference. First operand 70 states and 95 transitions. Second operand has 23 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) [2024-11-08 14:10:35,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:10:35,670 INFO L93 Difference]: Finished difference Result 112 states and 153 transitions. [2024-11-08 14:10:35,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 14:10:35,670 INFO L78 Accepts]: Start accepts. Automaton has has 23 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) Word has length 20 [2024-11-08 14:10:35,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:10:35,671 INFO L225 Difference]: With dead ends: 112 [2024-11-08 14:10:35,671 INFO L226 Difference]: Without dead ends: 94 [2024-11-08 14:10:35,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2024-11-08 14:10:35,672 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 11 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:10:35,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 65 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:10:35,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-08 14:10:35,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 77. [2024-11-08 14:10:35,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.381578947368421) internal successors, (105), 76 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:35,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2024-11-08 14:10:35,698 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 20 [2024-11-08 14:10:35,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:10:35,698 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2024-11-08 14:10:35,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 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) [2024-11-08 14:10:35,698 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2024-11-08 14:10:35,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 14:10:35,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:10:35,699 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:10:35,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 14:10:35,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 14:10:35,899 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:10:35,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:10:35,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2017092107, now seen corresponding path program 8 times [2024-11-08 14:10:35,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:10:35,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471300023] [2024-11-08 14:10:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:10:35,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:10:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:36,507 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:36,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:10:36,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471300023] [2024-11-08 14:10:36,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471300023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:10:36,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640555656] [2024-11-08 14:10:36,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:10:36,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:36,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:10:36,510 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:10:36,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 14:10:36,579 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:10:36,579 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:10:36,584 WARN L253 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-08 14:10:36,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:10:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:37,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:10:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:37,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640555656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:10:37,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:10:37,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 40 [2024-11-08 14:10:37,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258468159] [2024-11-08 14:10:37,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:10:37,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-08 14:10:37,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:10:37,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-08 14:10:37,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1378, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 14:10:37,806 INFO L87 Difference]: Start difference. First operand 77 states and 105 transitions. Second operand has 40 states, 40 states have (on average 1.4) internal successors, (56), 40 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:41,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:10:41,151 INFO L93 Difference]: Finished difference Result 137 states and 176 transitions. [2024-11-08 14:10:41,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-08 14:10:41,152 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.4) internal successors, (56), 40 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-08 14:10:41,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:10:41,153 INFO L225 Difference]: With dead ends: 137 [2024-11-08 14:10:41,153 INFO L226 Difference]: Without dead ends: 104 [2024-11-08 14:10:41,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1102 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=474, Invalid=3816, Unknown=0, NotChecked=0, Total=4290 [2024-11-08 14:10:41,154 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 54 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:10:41,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 118 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 14:10:41,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-08 14:10:41,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 71. [2024-11-08 14:10:41,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4) internal successors, (98), 70 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:41,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 98 transitions. [2024-11-08 14:10:41,184 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 98 transitions. Word has length 21 [2024-11-08 14:10:41,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:10:41,184 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 98 transitions. [2024-11-08 14:10:41,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.4) internal successors, (56), 40 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:41,184 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 98 transitions. [2024-11-08 14:10:41,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-08 14:10:41,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:10:41,185 INFO L215 NwaCegarLoop]: trace histogram [7, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:10:41,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 14:10:41,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 14:10:41,386 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:10:41,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:10:41,387 INFO L85 PathProgramCache]: Analyzing trace with hash 2027051824, now seen corresponding path program 9 times [2024-11-08 14:10:41,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:10:41,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741175512] [2024-11-08 14:10:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:10:41,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:10:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 14:10:41,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:10:41,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741175512] [2024-11-08 14:10:41,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741175512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:10:41,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693259674] [2024-11-08 14:10:41,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:10:41,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:41,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:10:41,581 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:10:41,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 14:10:41,628 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 14:10:41,629 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:10:41,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 14:10:41,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:10:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 14:10:41,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:10:41,985 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 14:10:41,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693259674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:10:41,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:10:41,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 31 [2024-11-08 14:10:41,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974762468] [2024-11-08 14:10:41,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:10:41,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 14:10:41,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:10:41,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 14:10:41,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2024-11-08 14:10:41,987 INFO L87 Difference]: Start difference. First operand 71 states and 98 transitions. Second operand has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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) [2024-11-08 14:10:43,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:10:43,119 INFO L93 Difference]: Finished difference Result 141 states and 197 transitions. [2024-11-08 14:10:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-08 14:10:43,119 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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 22 [2024-11-08 14:10:43,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:10:43,120 INFO L225 Difference]: With dead ends: 141 [2024-11-08 14:10:43,120 INFO L226 Difference]: Without dead ends: 124 [2024-11-08 14:10:43,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=958, Invalid=4012, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 14:10:43,122 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 102 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:10:43,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 128 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 14:10:43,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-08 14:10:43,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 85. [2024-11-08 14:10:43,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2857142857142858) internal successors, (108), 84 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:43,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 108 transitions. [2024-11-08 14:10:43,162 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 108 transitions. Word has length 22 [2024-11-08 14:10:43,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:10:43,162 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 108 transitions. [2024-11-08 14:10:43,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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) [2024-11-08 14:10:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 108 transitions. [2024-11-08 14:10:43,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-08 14:10:43,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:10:43,163 INFO L215 NwaCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:10:43,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 14:10:43,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 14:10:43,363 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:10:43,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:10:43,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1622674000, now seen corresponding path program 3 times [2024-11-08 14:10:43,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:10:43,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309225124] [2024-11-08 14:10:43,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:10:43,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:10:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:43,585 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:43,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:10:43,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309225124] [2024-11-08 14:10:43,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309225124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:10:43,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159697258] [2024-11-08 14:10:43,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:10:43,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:43,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:10:43,587 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:10:43,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 14:10:43,654 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-08 14:10:43,655 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:10:43,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-08 14:10:43,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:10:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:43,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:10:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:44,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159697258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:10:44,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:10:44,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-08 14:10:44,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757988812] [2024-11-08 14:10:44,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:10:44,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 14:10:44,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:10:44,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 14:10:44,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 14:10:44,010 INFO L87 Difference]: Start difference. First operand 85 states and 108 transitions. Second operand has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:48,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:10:48,841 INFO L93 Difference]: Finished difference Result 497 states and 671 transitions. [2024-11-08 14:10:48,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-08 14:10:48,841 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 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 [2024-11-08 14:10:48,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:10:48,843 INFO L225 Difference]: With dead ends: 497 [2024-11-08 14:10:48,843 INFO L226 Difference]: Without dead ends: 470 [2024-11-08 14:10:48,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1629 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2044, Invalid=4598, Unknown=0, NotChecked=0, Total=6642 [2024-11-08 14:10:48,846 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 855 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 14:10:48,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 374 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 14:10:48,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2024-11-08 14:10:48,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 125. [2024-11-08 14:10:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.3387096774193548) internal successors, (166), 124 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:48,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2024-11-08 14:10:48,921 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 22 [2024-11-08 14:10:48,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:10:48,921 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2024-11-08 14:10:48,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:48,921 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2024-11-08 14:10:48,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-08 14:10:48,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:10:48,922 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:10:48,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 14:10:49,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 14:10:49,123 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:10:49,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:10:49,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1230457407, now seen corresponding path program 10 times [2024-11-08 14:10:49,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:10:49,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234355942] [2024-11-08 14:10:49,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:10:49,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:10:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:49,796 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:49,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:10:49,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234355942] [2024-11-08 14:10:49,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234355942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:10:49,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197316695] [2024-11-08 14:10:49,796 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 14:10:49,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:49,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:10:49,797 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:10:49,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 14:10:49,864 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 14:10:49,864 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:10:49,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-08 14:10:49,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:10:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:50,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:10:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:10:50,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197316695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:10:50,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:10:50,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 43 [2024-11-08 14:10:50,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024902525] [2024-11-08 14:10:50,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:10:50,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-08 14:10:50,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:10:50,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-08 14:10:50,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 14:10:50,720 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand has 43 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 43 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:52,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:10:52,846 INFO L93 Difference]: Finished difference Result 213 states and 264 transitions. [2024-11-08 14:10:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-08 14:10:52,847 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 43 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-08 14:10:52,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:10:52,848 INFO L225 Difference]: With dead ends: 213 [2024-11-08 14:10:52,848 INFO L226 Difference]: Without dead ends: 187 [2024-11-08 14:10:52,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=506, Invalid=3916, Unknown=0, NotChecked=0, Total=4422 [2024-11-08 14:10:52,849 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 66 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 14:10:52,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 99 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 14:10:52,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-08 14:10:52,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 118. [2024-11-08 14:10:52,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.3418803418803418) internal successors, (157), 117 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:52,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 157 transitions. [2024-11-08 14:10:52,914 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 157 transitions. Word has length 24 [2024-11-08 14:10:52,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:10:52,914 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 157 transitions. [2024-11-08 14:10:52,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 43 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:10:52,915 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 157 transitions. [2024-11-08 14:10:52,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-08 14:10:52,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:10:52,915 INFO L215 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:10:52,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 14:10:53,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 14:10:53,116 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:10:53,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:10:53,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1431729572, now seen corresponding path program 11 times [2024-11-08 14:10:53,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:10:53,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008839219] [2024-11-08 14:10:53,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:10:53,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:10:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:10:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 14:10:53,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:10:53,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008839219] [2024-11-08 14:10:53,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008839219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:10:53,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430965587] [2024-11-08 14:10:53,380 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 14:10:53,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:10:53,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:10:53,383 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:10:53,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 14:10:53,447 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-08 14:10:53,447 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:10:53,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 14:10:53,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:10:53,490 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 14:10:53,490 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:10:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 14:10:53,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430965587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:10:53,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:10:53,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2024-11-08 14:10:53,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686867016] [2024-11-08 14:10:53,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:10:53,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-08 14:10:53,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:10:53,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-08 14:10:53,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 14:10:53,880 INFO L87 Difference]: Start difference. First operand 118 states and 157 transitions. Second operand has 37 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 37 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:11:06,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:06,536 INFO L93 Difference]: Finished difference Result 465 states and 622 transitions. [2024-11-08 14:11:06,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2024-11-08 14:11:06,537 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 37 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-08 14:11:06,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:06,539 INFO L225 Difference]: With dead ends: 465 [2024-11-08 14:11:06,539 INFO L226 Difference]: Without dead ends: 453 [2024-11-08 14:11:06,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8326 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=6168, Invalid=16182, Unknown=0, NotChecked=0, Total=22350 [2024-11-08 14:11:06,543 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 1145 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:06,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 389 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 14:11:06,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-11-08 14:11:06,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 130. [2024-11-08 14:11:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.3410852713178294) internal successors, (173), 129 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:11:06,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 173 transitions. [2024-11-08 14:11:06,628 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 173 transitions. Word has length 25 [2024-11-08 14:11:06,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:06,628 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 173 transitions. [2024-11-08 14:11:06,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 37 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:11:06,629 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 173 transitions. [2024-11-08 14:11:06,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 14:11:06,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:06,629 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:06,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 14:11:06,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:06,830 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:06,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:06,830 INFO L85 PathProgramCache]: Analyzing trace with hash -40778609, now seen corresponding path program 12 times [2024-11-08 14:11:06,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:06,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339044868] [2024-11-08 14:11:06,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:06,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 14:11:07,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:07,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339044868] [2024-11-08 14:11:07,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339044868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:07,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218854808] [2024-11-08 14:11:07,007 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 14:11:07,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:07,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:07,009 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:07,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 14:11:07,061 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-08 14:11:07,061 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:11:07,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-08 14:11:07,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 14:11:07,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 14:11:07,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218854808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:07,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:07,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 33 [2024-11-08 14:11:07,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176700001] [2024-11-08 14:11:07,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:07,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 14:11:07,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:07,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 14:11:07,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 14:11:07,457 INFO L87 Difference]: Start difference. First operand 130 states and 173 transitions. Second operand has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:11:08,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:08,110 INFO L93 Difference]: Finished difference Result 239 states and 308 transitions. [2024-11-08 14:11:08,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 14:11:08,110 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-08 14:11:08,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:08,111 INFO L225 Difference]: With dead ends: 239 [2024-11-08 14:11:08,111 INFO L226 Difference]: Without dead ends: 177 [2024-11-08 14:11:08,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=242, Invalid=1318, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 14:11:08,112 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 16 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:08,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 83 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:11:08,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-08 14:11:08,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 153. [2024-11-08 14:11:08,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.3486842105263157) internal successors, (205), 152 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:11:08,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 205 transitions. [2024-11-08 14:11:08,205 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 205 transitions. Word has length 26 [2024-11-08 14:11:08,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:08,205 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 205 transitions. [2024-11-08 14:11:08,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:11:08,205 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 205 transitions. [2024-11-08 14:11:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-08 14:11:08,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:08,206 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:08,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 14:11:08,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 14:11:08,406 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:08,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:08,407 INFO L85 PathProgramCache]: Analyzing trace with hash 881225141, now seen corresponding path program 13 times [2024-11-08 14:11:08,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:08,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634684849] [2024-11-08 14:11:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:08,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:11:09,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:09,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634684849] [2024-11-08 14:11:09,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634684849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:09,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788255180] [2024-11-08 14:11:09,150 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 14:11:09,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:09,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:09,151 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:09,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 14:11:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:09,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-08 14:11:09,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:11:09,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:10,309 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:11:10,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788255180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:10,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:10,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 49 [2024-11-08 14:11:10,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062720798] [2024-11-08 14:11:10,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:10,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 14:11:10,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:10,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 14:11:10,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2123, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 14:11:10,311 INFO L87 Difference]: Start difference. First operand 153 states and 205 transitions. Second operand has 49 states, 49 states have (on average 1.530612244897959) internal successors, (75), 49 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:11:13,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:13,667 INFO L93 Difference]: Finished difference Result 261 states and 319 transitions. [2024-11-08 14:11:13,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-08 14:11:13,668 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.530612244897959) internal successors, (75), 49 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-08 14:11:13,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:13,669 INFO L225 Difference]: With dead ends: 261 [2024-11-08 14:11:13,669 INFO L226 Difference]: Without dead ends: 227 [2024-11-08 14:11:13,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1344 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=624, Invalid=5076, Unknown=0, NotChecked=0, Total=5700 [2024-11-08 14:11:13,670 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 76 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:13,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 117 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 14:11:13,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-08 14:11:13,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 139. [2024-11-08 14:11:13,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.3623188405797102) internal successors, (188), 138 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) [2024-11-08 14:11:13,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 188 transitions. [2024-11-08 14:11:13,800 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 188 transitions. Word has length 27 [2024-11-08 14:11:13,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:13,800 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 188 transitions. [2024-11-08 14:11:13,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.530612244897959) internal successors, (75), 49 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:11:13,800 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 188 transitions. [2024-11-08 14:11:13,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-08 14:11:13,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:13,800 INFO L215 NwaCegarLoop]: trace histogram [15, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:13,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 14:11:14,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 14:11:14,001 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:14,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:14,002 INFO L85 PathProgramCache]: Analyzing trace with hash 949161264, now seen corresponding path program 14 times [2024-11-08 14:11:14,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:14,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680608848] [2024-11-08 14:11:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:14,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 14:11:14,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:14,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680608848] [2024-11-08 14:11:14,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680608848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:14,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76926568] [2024-11-08 14:11:14,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:11:14,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:14,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:14,303 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:14,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 14:11:14,358 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:11:14,359 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:11:14,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-08 14:11:14,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 14:11:14,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:14,954 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 14:11:14,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76926568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:14,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:14,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2024-11-08 14:11:14,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257313293] [2024-11-08 14:11:14,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:14,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 14:11:14,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:14,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 14:11:14,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 14:11:14,957 INFO L87 Difference]: Start difference. First operand 139 states and 188 transitions. Second operand has 41 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:11:39,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:39,241 INFO L93 Difference]: Finished difference Result 585 states and 761 transitions. [2024-11-08 14:11:39,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2024-11-08 14:11:39,242 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-08 14:11:39,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:39,244 INFO L225 Difference]: With dead ends: 585 [2024-11-08 14:11:39,244 INFO L226 Difference]: Without dead ends: 557 [2024-11-08 14:11:39,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17387 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=10628, Invalid=33262, Unknown=0, NotChecked=0, Total=43890 [2024-11-08 14:11:39,248 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 1455 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 777 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:39,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 436 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [777 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 14:11:39,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-08 14:11:39,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 154. [2024-11-08 14:11:39,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.3529411764705883) internal successors, (207), 153 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:11:39,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 207 transitions. [2024-11-08 14:11:39,380 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 207 transitions. Word has length 28 [2024-11-08 14:11:39,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:39,380 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 207 transitions. [2024-11-08 14:11:39,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:11:39,380 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 207 transitions. [2024-11-08 14:11:39,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 14:11:39,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:39,381 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:39,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 14:11:39,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 14:11:39,582 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:39,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:39,582 INFO L85 PathProgramCache]: Analyzing trace with hash 423173891, now seen corresponding path program 15 times [2024-11-08 14:11:39,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:39,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250764677] [2024-11-08 14:11:39,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:39,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 14:11:39,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:39,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250764677] [2024-11-08 14:11:39,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250764677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:39,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397185868] [2024-11-08 14:11:39,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:11:39,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:39,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:39,813 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:39,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 14:11:39,904 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-08 14:11:39,905 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:11:39,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-08 14:11:39,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 14:11:40,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 14:11:40,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397185868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:40,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:40,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 38 [2024-11-08 14:11:40,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256016611] [2024-11-08 14:11:40,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:40,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 14:11:40,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:40,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 14:11:40,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 14:11:40,491 INFO L87 Difference]: Start difference. First operand 154 states and 207 transitions. Second operand has 38 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:11:41,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:41,558 INFO L93 Difference]: Finished difference Result 268 states and 342 transitions. [2024-11-08 14:11:41,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-08 14:11:41,559 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 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 29 [2024-11-08 14:11:41,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:41,560 INFO L225 Difference]: With dead ends: 268 [2024-11-08 14:11:41,560 INFO L226 Difference]: Without dead ends: 198 [2024-11-08 14:11:41,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=305, Invalid=1765, Unknown=0, NotChecked=0, Total=2070 [2024-11-08 14:11:41,561 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:41,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 98 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 14:11:41,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-08 14:11:41,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 171. [2024-11-08 14:11:41,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.3294117647058823) internal successors, (226), 170 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:11:41,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 226 transitions. [2024-11-08 14:11:41,698 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 226 transitions. Word has length 29 [2024-11-08 14:11:41,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:41,698 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 226 transitions. [2024-11-08 14:11:41,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:11:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 226 transitions. [2024-11-08 14:11:41,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 14:11:41,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:41,699 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:41,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-08 14:11:41,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:41,900 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:41,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:41,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1268979979, now seen corresponding path program 16 times [2024-11-08 14:11:41,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:41,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103360856] [2024-11-08 14:11:41,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:41,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:42,101 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 14:11:42,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:42,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103360856] [2024-11-08 14:11:42,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103360856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:42,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529868685] [2024-11-08 14:11:42,102 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 14:11:42,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:42,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:42,103 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:42,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 14:11:42,154 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 14:11:42,155 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:11:42,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-08 14:11:42,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 14:11:42,243 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:42,452 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-08 14:11:42,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529868685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:42,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:42,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 12] total 31 [2024-11-08 14:11:42,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472405770] [2024-11-08 14:11:42,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:42,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 14:11:42,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:42,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 14:11:42,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2024-11-08 14:11:42,454 INFO L87 Difference]: Start difference. First operand 171 states and 226 transitions. Second operand has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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) [2024-11-08 14:11:43,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:43,498 INFO L93 Difference]: Finished difference Result 238 states and 296 transitions. [2024-11-08 14:11:43,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-08 14:11:43,498 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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 29 [2024-11-08 14:11:43,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:43,500 INFO L225 Difference]: With dead ends: 238 [2024-11-08 14:11:43,500 INFO L226 Difference]: Without dead ends: 198 [2024-11-08 14:11:43,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=342, Invalid=2208, Unknown=0, NotChecked=0, Total=2550 [2024-11-08 14:11:43,501 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 21 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:43,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 112 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 14:11:43,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-08 14:11:43,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 169. [2024-11-08 14:11:43,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.2976190476190477) internal successors, (218), 168 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:11:43,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 218 transitions. [2024-11-08 14:11:43,657 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 218 transitions. Word has length 29 [2024-11-08 14:11:43,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:43,658 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 218 transitions. [2024-11-08 14:11:43,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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) [2024-11-08 14:11:43,658 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 218 transitions. [2024-11-08 14:11:43,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-08 14:11:43,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:43,659 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:43,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-08 14:11:43,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:43,863 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:43,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:43,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2029727233, now seen corresponding path program 17 times [2024-11-08 14:11:43,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:43,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767288234] [2024-11-08 14:11:43,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:43,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:11:44,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:44,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767288234] [2024-11-08 14:11:44,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767288234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:44,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018030351] [2024-11-08 14:11:44,735 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 14:11:44,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:44,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:44,736 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:44,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 14:11:44,817 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-08 14:11:44,817 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:11:44,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-08 14:11:44,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:45,747 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:11:45,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:47,233 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:11:47,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018030351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:47,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:47,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27, 27] total 68 [2024-11-08 14:11:47,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950730224] [2024-11-08 14:11:47,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:47,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-08 14:11:47,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:47,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-08 14:11:47,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=4165, Unknown=0, NotChecked=0, Total=4556 [2024-11-08 14:11:47,237 INFO L87 Difference]: Start difference. First operand 169 states and 218 transitions. Second operand has 68 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 68 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)