./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/half_2.i --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/loop-invgen/half_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0b362a98d328467ff4a069dbed2be3429090ca070e60d49c76297e4bb94402b7 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 14:06:39,354 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 14:06:39,426 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 14:06:39,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 14:06:39,432 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 14:06:39,464 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 14:06:39,465 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 14:06:39,466 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 14:06:39,468 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 14:06:39,468 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 14:06:39,468 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 14:06:39,469 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 14:06:39,470 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 14:06:39,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 14:06:39,471 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 14:06:39,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 14:06:39,472 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 14:06:39,472 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 14:06:39,473 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 14:06:39,473 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 14:06:39,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 14:06:39,476 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 14:06:39,476 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 14:06:39,476 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 14:06:39,476 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 14:06:39,477 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 14:06:39,477 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 14:06:39,477 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 14:06:39,478 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 14:06:39,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 14:06:39,479 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 14:06:39,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 14:06:39,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:06:39,479 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 14:06:39,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 14:06:39,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 14:06:39,480 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 14:06:39,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 14:06:39,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 14:06:39,481 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 14:06:39,481 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 14:06:39,481 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 14:06:39,481 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b362a98d328467ff4a069dbed2be3429090ca070e60d49c76297e4bb94402b7 [2024-11-08 14:06:39,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 14:06:39,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 14:06:39,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 14:06:39,761 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 14:06:39,761 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 14:06:39,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/half_2.i [2024-11-08 14:06:41,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 14:06:41,340 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 14:06:41,341 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/half_2.i [2024-11-08 14:06:41,347 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b2f735c1/730cf1a14f654feab902a70286ef8201/FLAG8ba78064d [2024-11-08 14:06:41,359 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b2f735c1/730cf1a14f654feab902a70286ef8201 [2024-11-08 14:06:41,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 14:06:41,362 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 14:06:41,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 14:06:41,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 14:06:41,370 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 14:06:41,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:06:41" (1/1) ... [2024-11-08 14:06:41,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cff8dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:06:41, skipping insertion in model container [2024-11-08 14:06:41,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:06:41" (1/1) ... [2024-11-08 14:06:41,395 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 14:06:41,596 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/loop-invgen/half_2.i[893,906] [2024-11-08 14:06:41,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:06:41,622 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 14:06:41,634 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/loop-invgen/half_2.i[893,906] [2024-11-08 14:06:41,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:06:41,654 INFO L204 MainTranslator]: Completed translation [2024-11-08 14:06:41,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:06:41 WrapperNode [2024-11-08 14:06:41,655 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 14:06:41,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 14:06:41,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 14:06:41,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 14:06:41,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:06:41" (1/1) ... [2024-11-08 14:06:41,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:06:41" (1/1) ... [2024-11-08 14:06:41,685 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2024-11-08 14:06:41,686 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 14:06:41,687 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 14:06:41,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 14:06:41,687 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 14:06:41,696 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:06:41" (1/1) ... [2024-11-08 14:06:41,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:06:41" (1/1) ... [2024-11-08 14:06:41,698 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:06:41" (1/1) ... [2024-11-08 14:06:41,706 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 14:06:41,707 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:06:41" (1/1) ... [2024-11-08 14:06:41,707 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:06:41" (1/1) ... [2024-11-08 14:06:41,709 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:06:41" (1/1) ... [2024-11-08 14:06:41,711 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:06:41" (1/1) ... [2024-11-08 14:06:41,712 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:06:41" (1/1) ... [2024-11-08 14:06:41,713 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:06:41" (1/1) ... [2024-11-08 14:06:41,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 14:06:41,715 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 14:06:41,715 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 14:06:41,715 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 14:06:41,716 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:06:41" (1/1) ... [2024-11-08 14:06:41,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:06:41,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:06:41,748 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 14:06:41,751 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 14:06:41,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 14:06:41,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 14:06:41,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 14:06:41,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 14:06:41,842 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 14:06:41,843 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 14:06:41,939 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-08 14:06:41,939 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 14:06:41,950 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 14:06:41,950 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 14:06:41,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:06:41 BoogieIcfgContainer [2024-11-08 14:06:41,950 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 14:06:41,952 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 14:06:41,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 14:06:41,956 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 14:06:41,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 02:06:41" (1/3) ... [2024-11-08 14:06:41,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b751ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:06:41, skipping insertion in model container [2024-11-08 14:06:41,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:06:41" (2/3) ... [2024-11-08 14:06:41,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b751ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:06:41, skipping insertion in model container [2024-11-08 14:06:41,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:06:41" (3/3) ... [2024-11-08 14:06:41,960 INFO L112 eAbstractionObserver]: Analyzing ICFG half_2.i [2024-11-08 14:06:41,973 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 14:06:41,973 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 14:06:42,027 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 14:06:42,032 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;@4b990df9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 14:06:42,032 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 14:06:42,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 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 14:06:42,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 14:06:42,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:06:42,042 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:06:42,042 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:06:42,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:06:42,047 INFO L85 PathProgramCache]: Analyzing trace with hash 185205049, now seen corresponding path program 1 times [2024-11-08 14:06:42,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:06:42,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504488621] [2024-11-08 14:06:42,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:42,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:06:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:42,218 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 14:06:42,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:06:42,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504488621] [2024-11-08 14:06:42,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504488621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:06:42,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:06:42,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 14:06:42,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37054744] [2024-11-08 14:06:42,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:06:42,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 14:06:42,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:06:42,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 14:06:42,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:06:42,254 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 14:06:42,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:06:42,268 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2024-11-08 14:06:42,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 14:06:42,270 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-11-08 14:06:42,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:06:42,276 INFO L225 Difference]: With dead ends: 24 [2024-11-08 14:06:42,277 INFO L226 Difference]: Without dead ends: 10 [2024-11-08 14:06:42,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:06:42,285 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:06:42,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:06:42,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-08 14:06:42,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-11-08 14:06:42,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:06:42,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2024-11-08 14:06:42,317 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2024-11-08 14:06:42,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:06:42,317 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-11-08 14:06:42,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 14:06:42,318 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2024-11-08 14:06:42,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 14:06:42,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:06:42,319 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:06:42,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 14:06:42,319 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:06:42,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:06:42,320 INFO L85 PathProgramCache]: Analyzing trace with hash 181510965, now seen corresponding path program 1 times [2024-11-08 14:06:42,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:06:42,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781345458] [2024-11-08 14:06:42,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:42,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:06:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:42,675 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 14:06:42,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:06:42,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781345458] [2024-11-08 14:06:42,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781345458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:06:42,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:06:42,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:06:42,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213502446] [2024-11-08 14:06:42,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:06:42,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:06:42,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:06:42,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:06:42,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:06:42,687 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 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 14:06:42,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:06:42,753 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2024-11-08 14:06:42,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:06:42,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-11-08 14:06:42,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:06:42,756 INFO L225 Difference]: With dead ends: 17 [2024-11-08 14:06:42,756 INFO L226 Difference]: Without dead ends: 15 [2024-11-08 14:06:42,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:06:42,758 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:06:42,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:06:42,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-08 14:06:42,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2024-11-08 14:06:42,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:06:42,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2024-11-08 14:06:42,763 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2024-11-08 14:06:42,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:06:42,764 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-08 14:06:42,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 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 14:06:42,764 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-11-08 14:06:42,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 14:06:42,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:06:42,766 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:06:42,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 14:06:42,767 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:06:42,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:06:42,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1383318765, now seen corresponding path program 1 times [2024-11-08 14:06:42,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:06:42,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728517241] [2024-11-08 14:06:42,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:42,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:06:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:42,959 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 14:06:42,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:06:42,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728517241] [2024-11-08 14:06:42,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728517241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:06:42,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448523674] [2024-11-08 14:06:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:42,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:42,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:06:42,965 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 14:06:42,966 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 14:06:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:43,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 14:06:43,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:06:43,209 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 14:06:43,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:06:43,418 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 14:06:43,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448523674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:06:43,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:06:43,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-08 14:06:43,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315197983] [2024-11-08 14:06:43,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:06:43,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 14:06:43,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:06:43,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 14:06:43,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-08 14:06:43,425 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 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 14:06:43,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:06:43,683 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2024-11-08 14:06:43,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 14:06:43,684 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 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 14:06:43,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:06:43,685 INFO L225 Difference]: With dead ends: 28 [2024-11-08 14:06:43,685 INFO L226 Difference]: Without dead ends: 26 [2024-11-08 14:06:43,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-08 14:06:43,687 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:06:43,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 42 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:06:43,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-08 14:06:43,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2024-11-08 14:06:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:06:43,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-08 14:06:43,693 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 9 [2024-11-08 14:06:43,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:06:43,693 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-08 14:06:43,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 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 14:06:43,694 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-08 14:06:43,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 14:06:43,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:06:43,694 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:06:43,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 14:06:43,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:43,896 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:06:43,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:06:43,896 INFO L85 PathProgramCache]: Analyzing trace with hash -424251923, now seen corresponding path program 2 times [2024-11-08 14:06:43,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:06:43,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848762718] [2024-11-08 14:06:43,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:43,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:06:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:44,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:06:44,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848762718] [2024-11-08 14:06:44,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848762718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:06:44,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476763376] [2024-11-08 14:06:44,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:06:44,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:44,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:06:44,016 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 14:06:44,017 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 14:06:44,054 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:06:44,054 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:06:44,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 14:06:44,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:06:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:44,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:06:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:44,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476763376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:06:44,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:06:44,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-08 14:06:44,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235512257] [2024-11-08 14:06:44,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:06:44,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 14:06:44,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:06:44,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 14:06:44,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-08 14:06:44,244 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 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 14:06:44,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:06:44,377 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2024-11-08 14:06:44,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 14:06:44,378 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 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 11 [2024-11-08 14:06:44,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:06:44,379 INFO L225 Difference]: With dead ends: 31 [2024-11-08 14:06:44,379 INFO L226 Difference]: Without dead ends: 29 [2024-11-08 14:06:44,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2024-11-08 14:06:44,380 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:06:44,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 57 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:06:44,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-08 14:06:44,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2024-11-08 14:06:44,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 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 14:06:44,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-08 14:06:44,389 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2024-11-08 14:06:44,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:06:44,389 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-08 14:06:44,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 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 14:06:44,390 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-08 14:06:44,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 14:06:44,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:06:44,390 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:06:44,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 14:06:44,594 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,SelfDestructingSolverStorable3 [2024-11-08 14:06:44,595 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:06:44,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:06:44,596 INFO L85 PathProgramCache]: Analyzing trace with hash 34157897, now seen corresponding path program 1 times [2024-11-08 14:06:44,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:06:44,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817854573] [2024-11-08 14:06:44,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:44,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:06:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:44,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:06:44,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817854573] [2024-11-08 14:06:44,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817854573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:06:44,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664829713] [2024-11-08 14:06:44,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:44,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:44,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:06:44,706 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 14:06:44,708 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 14:06:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:44,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 14:06:44,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:06:44,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:44,813 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:06:44,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664829713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:06:44,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:06:44,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2024-11-08 14:06:44,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107468017] [2024-11-08 14:06:44,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:06:44,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 14:06:44,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:06:44,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 14:06:44,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-08 14:06:44,815 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:06:44,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:06:44,836 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-11-08 14:06:44,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:06:44,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 14:06:44,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:06:44,838 INFO L225 Difference]: With dead ends: 27 [2024-11-08 14:06:44,838 INFO L226 Difference]: Without dead ends: 19 [2024-11-08 14:06:44,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-08 14:06:44,839 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:06:44,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:06:44,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-08 14:06:44,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-08 14:06:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:06:44,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-11-08 14:06:44,847 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 11 [2024-11-08 14:06:44,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:06:44,847 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-11-08 14:06:44,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:06:44,850 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-11-08 14:06:44,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 14:06:44,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:06:44,850 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:06:44,869 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 14:06:45,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:45,051 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:06:45,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:06:45,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1874485687, now seen corresponding path program 1 times [2024-11-08 14:06:45,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:06:45,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001677109] [2024-11-08 14:06:45,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:45,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:06:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:45,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:06:45,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001677109] [2024-11-08 14:06:45,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001677109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:06:45,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726804639] [2024-11-08 14:06:45,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:45,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:45,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:06:45,257 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 14:06:45,258 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 14:06:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:45,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 14:06:45,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:06:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:45,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:06:45,686 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:45,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726804639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:06:45,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:06:45,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2024-11-08 14:06:45,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433185981] [2024-11-08 14:06:45,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:06:45,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 14:06:45,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:06:45,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 14:06:45,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-08 14:06:45,690 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 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 14:06:45,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:06:45,966 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2024-11-08 14:06:45,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 14:06:45,967 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 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 13 [2024-11-08 14:06:45,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:06:45,968 INFO L225 Difference]: With dead ends: 43 [2024-11-08 14:06:45,968 INFO L226 Difference]: Without dead ends: 31 [2024-11-08 14:06:45,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2024-11-08 14:06:45,969 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:06:45,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 40 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:06:45,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-08 14:06:45,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 18. [2024-11-08 14:06:45,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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 14:06:45,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-08 14:06:45,974 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2024-11-08 14:06:45,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:06:45,974 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-08 14:06:45,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 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 14:06:45,974 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-08 14:06:45,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 14:06:45,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:06:45,975 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:06:45,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 14:06:46,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:46,176 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:06:46,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:06:46,176 INFO L85 PathProgramCache]: Analyzing trace with hash 655979117, now seen corresponding path program 2 times [2024-11-08 14:06:46,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:06:46,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866655702] [2024-11-08 14:06:46,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:46,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:06:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:46,306 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:46,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:06:46,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866655702] [2024-11-08 14:06:46,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866655702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:06:46,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272108200] [2024-11-08 14:06:46,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:06:46,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:46,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:06:46,309 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 14:06:46,310 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 14:06:46,349 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:06:46,349 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:06:46,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 14:06:46,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:06:46,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:46,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:06:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:46,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272108200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:06:46,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:06:46,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2024-11-08 14:06:46,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26828050] [2024-11-08 14:06:46,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:06:46,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 14:06:46,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:06:46,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 14:06:46,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-08 14:06:46,654 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:06:46,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:06:46,705 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-11-08 14:06:46,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 14:06:46,705 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-08 14:06:46,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:06:46,706 INFO L225 Difference]: With dead ends: 29 [2024-11-08 14:06:46,706 INFO L226 Difference]: Without dead ends: 18 [2024-11-08 14:06:46,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2024-11-08 14:06:46,707 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:06:46,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:06:46,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-08 14:06:46,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-08 14:06:46,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 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 14:06:46,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-08 14:06:46,711 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2024-11-08 14:06:46,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:06:46,712 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-08 14:06:46,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:06:46,712 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-08 14:06:46,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 14:06:46,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:06:46,713 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:06:46,732 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 14:06:46,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:46,914 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:06:46,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:06:46,914 INFO L85 PathProgramCache]: Analyzing trace with hash -17212563, now seen corresponding path program 3 times [2024-11-08 14:06:46,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:06:46,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520357963] [2024-11-08 14:06:46,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:46,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:06:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:47,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:06:47,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520357963] [2024-11-08 14:06:47,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520357963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:06:47,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123456297] [2024-11-08 14:06:47,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:06:47,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:47,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:06:47,183 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 14:06:47,184 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 14:06:47,228 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 14:06:47,228 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:06:47,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 14:06:47,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:06:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:47,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:06:47,776 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:47,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123456297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:06:47,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:06:47,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2024-11-08 14:06:47,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396308593] [2024-11-08 14:06:47,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:06:47,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 14:06:47,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:06:47,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 14:06:47,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2024-11-08 14:06:47,780 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 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 14:06:48,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:06:48,044 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2024-11-08 14:06:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 14:06:48,044 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 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 17 [2024-11-08 14:06:48,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:06:48,045 INFO L225 Difference]: With dead ends: 36 [2024-11-08 14:06:48,045 INFO L226 Difference]: Without dead ends: 21 [2024-11-08 14:06:48,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 14:06:48,047 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:06:48,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 54 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:06:48,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-08 14:06:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-11-08 14:06:48,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 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 14:06:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2024-11-08 14:06:48,053 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2024-11-08 14:06:48,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:06:48,054 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2024-11-08 14:06:48,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 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 14:06:48,054 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2024-11-08 14:06:48,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 14:06:48,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:06:48,055 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:06:48,067 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 14:06:48,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:48,258 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:06:48,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:06:48,258 INFO L85 PathProgramCache]: Analyzing trace with hash 972400821, now seen corresponding path program 4 times [2024-11-08 14:06:48,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:06:48,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070475418] [2024-11-08 14:06:48,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:48,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:06:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:48,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:06:48,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070475418] [2024-11-08 14:06:48,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070475418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:06:48,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674855259] [2024-11-08 14:06:48,391 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 14:06:48,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:48,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:06:48,393 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 14:06:48,394 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 14:06:48,439 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 14:06:48,439 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:06:48,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 14:06:48,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:06:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:48,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:06:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:48,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674855259] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:06:48,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:06:48,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-08 14:06:48,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675844713] [2024-11-08 14:06:48,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:06:48,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 14:06:48,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:06:48,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 14:06:48,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-11-08 14:06:48,659 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 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 14:06:48,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:06:48,783 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-11-08 14:06:48,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 14:06:48,783 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 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 18 [2024-11-08 14:06:48,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:06:48,784 INFO L225 Difference]: With dead ends: 25 [2024-11-08 14:06:48,784 INFO L226 Difference]: Without dead ends: 23 [2024-11-08 14:06:48,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2024-11-08 14:06:48,785 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:06:48,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 50 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:06:48,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-08 14:06:48,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-11-08 14:06:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 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 14:06:48,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-11-08 14:06:48,791 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 18 [2024-11-08 14:06:48,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:06:48,791 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-11-08 14:06:48,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 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 14:06:48,792 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-11-08 14:06:48,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 14:06:48,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:06:48,792 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:06:48,809 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 14:06:48,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:48,997 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:06:48,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:06:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash -756727863, now seen corresponding path program 5 times [2024-11-08 14:06:48,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:06:48,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693943133] [2024-11-08 14:06:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:48,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:06:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:49,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:06:49,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693943133] [2024-11-08 14:06:49,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693943133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:06:49,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271662858] [2024-11-08 14:06:49,310 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 14:06:49,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:49,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:06:49,312 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 14:06:49,314 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 14:06:49,357 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-08 14:06:49,357 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:06:49,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 14:06:49,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:06:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:49,565 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:06:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:49,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271662858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:06:49,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:06:50,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 28 [2024-11-08 14:06:50,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799375667] [2024-11-08 14:06:50,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:06:50,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 14:06:50,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:06:50,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 14:06:50,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2024-11-08 14:06:50,002 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 28 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 28 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:06:50,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:06:50,579 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2024-11-08 14:06:50,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 14:06:50,580 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 28 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:06:50,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:06:50,580 INFO L225 Difference]: With dead ends: 59 [2024-11-08 14:06:50,580 INFO L226 Difference]: Without dead ends: 41 [2024-11-08 14:06:50,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=286, Invalid=1436, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 14:06:50,582 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:06:50,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 66 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:06:50,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-08 14:06:50,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2024-11-08 14:06:50,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 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 14:06:50,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-08 14:06:50,590 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 21 [2024-11-08 14:06:50,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:06:50,590 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-08 14:06:50,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 28 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:06:50,591 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-08 14:06:50,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-08 14:06:50,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:06:50,591 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:06:50,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 14:06:50,795 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,SelfDestructingSolverStorable9 [2024-11-08 14:06:50,796 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:06:50,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:06:50,796 INFO L85 PathProgramCache]: Analyzing trace with hash -946138643, now seen corresponding path program 6 times [2024-11-08 14:06:50,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:06:50,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909468762] [2024-11-08 14:06:50,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:50,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:06:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:51,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:06:51,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909468762] [2024-11-08 14:06:51,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909468762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:06:51,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022020295] [2024-11-08 14:06:51,218 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 14:06:51,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:51,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:06:51,219 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 14:06:51,220 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 14:06:51,258 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-08 14:06:51,258 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:06:51,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 14:06:51,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:06:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:51,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:06:52,145 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:52,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022020295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:06:52,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:06:52,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 40 [2024-11-08 14:06:52,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530955000] [2024-11-08 14:06:52,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:06:52,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-08 14:06:52,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:06:52,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-08 14:06:52,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1310, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 14:06:52,148 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:06:52,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:06:52,882 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2024-11-08 14:06:52,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 14:06:52,883 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-08 14:06:52,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:06:52,884 INFO L225 Difference]: With dead ends: 81 [2024-11-08 14:06:52,884 INFO L226 Difference]: Without dead ends: 60 [2024-11-08 14:06:52,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=490, Invalid=2590, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 14:06:52,885 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:06:52,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 96 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 14:06:52,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-08 14:06:52,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 48. [2024-11-08 14:06:52,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 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 14:06:52,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2024-11-08 14:06:52,897 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 25 [2024-11-08 14:06:52,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:06:52,897 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2024-11-08 14:06:52,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:06:52,897 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2024-11-08 14:06:52,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 14:06:52,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:06:52,898 INFO L215 NwaCegarLoop]: trace histogram [9, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:06:52,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 14:06:53,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:53,099 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:06:53,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:06:53,099 INFO L85 PathProgramCache]: Analyzing trace with hash 754439953, now seen corresponding path program 7 times [2024-11-08 14:06:53,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:06:53,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418158131] [2024-11-08 14:06:53,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:53,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:06:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:53,375 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:53,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:06:53,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418158131] [2024-11-08 14:06:53,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418158131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:06:53,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162185478] [2024-11-08 14:06:53,376 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 14:06:53,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:53,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:06:53,378 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 14:06:53,379 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 14:06:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:53,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 14:06:53,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:06:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:53,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:06:53,823 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:53,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162185478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:06:53,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:06:53,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2024-11-08 14:06:53,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281096420] [2024-11-08 14:06:53,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:06:53,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 14:06:53,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:06:53,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 14:06:53,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=1161, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 14:06:53,825 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 39 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 39 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:06:54,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:06:54,150 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2024-11-08 14:06:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 14:06:54,151 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 39 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-08 14:06:54,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:06:54,151 INFO L225 Difference]: With dead ends: 107 [2024-11-08 14:06:54,151 INFO L226 Difference]: Without dead ends: 105 [2024-11-08 14:06:54,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=598, Invalid=2372, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 14:06:54,153 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:06:54,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 110 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:06:54,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-08 14:06:54,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 45. [2024-11-08 14:06:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 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 14:06:54,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-11-08 14:06:54,173 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 26 [2024-11-08 14:06:54,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:06:54,174 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-11-08 14:06:54,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 39 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:06:54,174 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-11-08 14:06:54,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 14:06:54,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:06:54,174 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:06:54,187 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 14:06:54,375 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,SelfDestructingSolverStorable11 [2024-11-08 14:06:54,375 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:06:54,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:06:54,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1059897673, now seen corresponding path program 8 times [2024-11-08 14:06:54,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:06:54,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35391348] [2024-11-08 14:06:54,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:54,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:06:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:54,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:06:54,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35391348] [2024-11-08 14:06:54,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35391348] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:06:54,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877252435] [2024-11-08 14:06:54,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:06:54,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:54,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:06:54,805 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 14:06:54,806 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 14:06:54,850 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:06:54,851 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:06:54,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 14:06:54,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:06:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:55,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:06:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:55,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877252435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:06:55,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:06:55,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 38 [2024-11-08 14:06:55,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185674679] [2024-11-08 14:06:55,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:06:55,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 14:06:55,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:06:55,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 14:06:55,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1181, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 14:06:55,602 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:06:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:06:56,449 INFO L93 Difference]: Finished difference Result 127 states and 136 transitions. [2024-11-08 14:06:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-08 14:06:56,450 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-08 14:06:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:06:56,450 INFO L225 Difference]: With dead ends: 127 [2024-11-08 14:06:56,451 INFO L226 Difference]: Without dead ends: 103 [2024-11-08 14:06:56,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=519, Invalid=2787, Unknown=0, NotChecked=0, Total=3306 [2024-11-08 14:06:56,452 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:06:56,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 103 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 14:06:56,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-08 14:06:56,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 44. [2024-11-08 14:06:56,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 43 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 14:06:56,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2024-11-08 14:06:56,463 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 29 [2024-11-08 14:06:56,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:06:56,463 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2024-11-08 14:06:56,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:06:56,463 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2024-11-08 14:06:56,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-08 14:06:56,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:06:56,464 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:06:56,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 14:06:56,664 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,SelfDestructingSolverStorable12 [2024-11-08 14:06:56,665 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:06:56,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:06:56,665 INFO L85 PathProgramCache]: Analyzing trace with hash -138352531, now seen corresponding path program 9 times [2024-11-08 14:06:56,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:06:56,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454744942] [2024-11-08 14:06:56,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:56,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:06:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:06:57,225 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 35 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:57,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:06:57,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454744942] [2024-11-08 14:06:57,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454744942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:06:57,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335038977] [2024-11-08 14:06:57,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:06:57,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:06:57,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:06:57,228 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 14:06:57,230 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 14:06:57,288 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-08 14:06:57,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:06:57,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-08 14:06:57,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:06:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:57,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:06:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:06:58,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335038977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:06:58,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:06:58,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 20] total 52 [2024-11-08 14:06:58,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528131230] [2024-11-08 14:06:58,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:06:58,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-08 14:06:58,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:06:58,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-08 14:06:58,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=2253, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 14:06:58,563 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 52 states, 52 states have (on average 1.75) internal successors, (91), 52 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:06:59,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:06:59,650 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2024-11-08 14:06:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-08 14:06:59,651 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 52 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-08 14:06:59,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:06:59,652 INFO L225 Difference]: With dead ends: 119 [2024-11-08 14:06:59,652 INFO L226 Difference]: Without dead ends: 92 [2024-11-08 14:06:59,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=823, Invalid=4579, Unknown=0, NotChecked=0, Total=5402 [2024-11-08 14:06:59,653 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 14:06:59,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 144 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 14:06:59,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-08 14:06:59,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 43. [2024-11-08 14:06:59,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:06:59,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2024-11-08 14:06:59,667 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 33 [2024-11-08 14:06:59,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:06:59,668 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2024-11-08 14:06:59,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 52 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:06:59,668 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2024-11-08 14:06:59,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 14:06:59,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:06:59,669 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:06:59,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 14:06:59,869 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,SelfDestructingSolverStorable13 [2024-11-08 14:06:59,869 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:06:59,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:06:59,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1196154167, now seen corresponding path program 10 times [2024-11-08 14:06:59,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:06:59,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998566317] [2024-11-08 14:06:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:06:59,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:06:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:07:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 51 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:00,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:07:00,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998566317] [2024-11-08 14:07:00,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998566317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:07:00,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358395691] [2024-11-08 14:07:00,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 14:07:00,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:07:00,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:07:00,513 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 14:07:00,514 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 14:07:00,563 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 14:07:00,563 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:07:00,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-08 14:07:00,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:07:00,878 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:00,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:07:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:01,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358395691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:07:01,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:07:01,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 48 [2024-11-08 14:07:01,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242741872] [2024-11-08 14:07:01,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:07:01,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-08 14:07:01,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:07:01,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-08 14:07:01,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=1908, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 14:07:01,599 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 48 states, 48 states have (on average 2.0) internal successors, (96), 48 states have internal predecessors, (96), 0 states have call successors, (0), 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 14:07:02,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:07:02,910 INFO L93 Difference]: Finished difference Result 106 states and 117 transitions. [2024-11-08 14:07:02,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-08 14:07:02,911 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0) internal successors, (96), 48 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-08 14:07:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:07:02,912 INFO L225 Difference]: With dead ends: 106 [2024-11-08 14:07:02,912 INFO L226 Difference]: Without dead ends: 76 [2024-11-08 14:07:02,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=828, Invalid=4574, Unknown=0, NotChecked=0, Total=5402 [2024-11-08 14:07:02,914 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 14:07:02,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 133 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 14:07:02,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-08 14:07:02,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 42. [2024-11-08 14:07:02,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 states have internal predecessors, (43), 0 states have call successors, (0), 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 14:07:02,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-11-08 14:07:02,932 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 37 [2024-11-08 14:07:02,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:07:02,932 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-11-08 14:07:02,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.0) internal successors, (96), 48 states have internal predecessors, (96), 0 states have call successors, (0), 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 14:07:02,933 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-11-08 14:07:02,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 14:07:02,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:07:02,933 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:07:02,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 14:07:03,134 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,SelfDestructingSolverStorable14 [2024-11-08 14:07:03,134 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:07:03,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:07:03,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1395466515, now seen corresponding path program 11 times [2024-11-08 14:07:03,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:07:03,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879248377] [2024-11-08 14:07:03,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:07:03,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:07:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:07:03,920 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 70 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:03,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:07:03,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879248377] [2024-11-08 14:07:03,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879248377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:07:03,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598719298] [2024-11-08 14:07:03,921 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 14:07:03,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:07:03,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:07:03,923 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 14:07:03,925 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 14:07:03,985 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-08 14:07:03,985 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:07:03,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-08 14:07:03,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:07:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:04,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:07:05,496 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:05,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598719298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:07:05,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:07:05,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 53 [2024-11-08 14:07:05,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620379204] [2024-11-08 14:07:05,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:07:05,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-08 14:07:05,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:07:05,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-08 14:07:05,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=2336, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 14:07:05,498 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 53 states, 53 states have (on average 2.018867924528302) internal successors, (107), 53 states have internal predecessors, (107), 0 states have call successors, (0), 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 14:07:07,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:07:07,213 INFO L93 Difference]: Finished difference Result 114 states and 127 transitions. [2024-11-08 14:07:07,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-08 14:07:07,214 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.018867924528302) internal successors, (107), 53 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-08 14:07:07,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:07:07,215 INFO L225 Difference]: With dead ends: 114 [2024-11-08 14:07:07,215 INFO L226 Difference]: Without dead ends: 81 [2024-11-08 14:07:07,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1011, Invalid=5631, Unknown=0, NotChecked=0, Total=6642 [2024-11-08 14:07:07,217 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 21 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 14:07:07,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 162 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 14:07:07,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-08 14:07:07,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 56. [2024-11-08 14:07:07,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2) internal successors, (66), 55 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 14:07:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2024-11-08 14:07:07,248 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 41 [2024-11-08 14:07:07,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:07:07,248 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2024-11-08 14:07:07,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.018867924528302) internal successors, (107), 53 states have internal predecessors, (107), 0 states have call successors, (0), 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 14:07:07,249 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2024-11-08 14:07:07,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 14:07:07,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:07:07,250 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:07:07,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 14:07:07,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:07:07,451 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:07:07,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:07:07,451 INFO L85 PathProgramCache]: Analyzing trace with hash 286483529, now seen corresponding path program 12 times [2024-11-08 14:07:07,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:07:07,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553090035] [2024-11-08 14:07:07,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:07:07,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:07:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:07:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 92 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:08,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:07:08,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553090035] [2024-11-08 14:07:08,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553090035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:07:08,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705584042] [2024-11-08 14:07:08,246 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 14:07:08,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:07:08,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:07:08,247 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 14:07:08,248 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 14:07:08,312 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-08 14:07:08,312 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:07:08,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-08 14:07:08,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:07:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:09,169 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:07:10,357 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:10,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705584042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:07:10,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:07:10,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26, 26] total 72 [2024-11-08 14:07:10,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219502633] [2024-11-08 14:07:10,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:07:10,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-08 14:07:10,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:07:10,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-08 14:07:10,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=4470, Unknown=0, NotChecked=0, Total=5112 [2024-11-08 14:07:10,360 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 72 states, 72 states have (on average 1.7777777777777777) internal successors, (128), 72 states have internal predecessors, (128), 0 states have call successors, (0), 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 14:07:12,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:07:12,079 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2024-11-08 14:07:12,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-08 14:07:12,080 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.7777777777777777) internal successors, (128), 72 states have internal predecessors, (128), 0 states have call successors, (0), 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 45 [2024-11-08 14:07:12,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:07:12,081 INFO L225 Difference]: With dead ends: 93 [2024-11-08 14:07:12,081 INFO L226 Difference]: Without dead ends: 57 [2024-11-08 14:07:12,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2531 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1259, Invalid=8841, Unknown=0, NotChecked=0, Total=10100 [2024-11-08 14:07:12,084 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 30 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 14:07:12,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 89 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 14:07:12,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-08 14:07:12,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2024-11-08 14:07:12,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 55 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:07:12,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2024-11-08 14:07:12,112 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 45 [2024-11-08 14:07:12,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:07:12,113 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2024-11-08 14:07:12,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.7777777777777777) internal successors, (128), 72 states have internal predecessors, (128), 0 states have call successors, (0), 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 14:07:12,113 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2024-11-08 14:07:12,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 14:07:12,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:07:12,116 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:07:12,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 14:07:12,316 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,SelfDestructingSolverStorable16 [2024-11-08 14:07:12,317 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:07:12,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:07:12,317 INFO L85 PathProgramCache]: Analyzing trace with hash -532515439, now seen corresponding path program 13 times [2024-11-08 14:07:12,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:07:12,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205379733] [2024-11-08 14:07:12,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:07:12,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:07:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:07:12,748 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 45 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:12,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:07:12,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205379733] [2024-11-08 14:07:12,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205379733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:07:12,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322088566] [2024-11-08 14:07:12,748 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 14:07:12,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:07:12,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:07:12,749 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 14:07:12,750 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 14:07:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:07:12,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-08 14:07:12,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:07:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:13,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:07:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:13,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322088566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:07:13,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:07:13,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2024-11-08 14:07:13,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556236468] [2024-11-08 14:07:13,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:07:13,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-08 14:07:13,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:07:13,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-08 14:07:13,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1792, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 14:07:13,460 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 47 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 47 states have internal predecessors, (72), 0 states have call successors, (0), 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 14:07:13,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:07:13,827 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2024-11-08 14:07:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 14:07:13,827 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 47 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-08 14:07:13,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:07:13,828 INFO L225 Difference]: With dead ends: 88 [2024-11-08 14:07:13,828 INFO L226 Difference]: Without dead ends: 86 [2024-11-08 14:07:13,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 58 SyntacticMatches, 11 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=732, Invalid=3690, Unknown=0, NotChecked=0, Total=4422 [2024-11-08 14:07:13,829 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:07:13,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 68 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:07:13,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-08 14:07:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 50. [2024-11-08 14:07:13,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:07:13,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2024-11-08 14:07:13,846 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 46 [2024-11-08 14:07:13,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:07:13,846 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2024-11-08 14:07:13,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 47 states have internal predecessors, (72), 0 states have call successors, (0), 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 14:07:13,846 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2024-11-08 14:07:13,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 14:07:13,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:07:13,847 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:07:13,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-08 14:07:14,047 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,SelfDestructingSolverStorable17 [2024-11-08 14:07:14,047 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:07:14,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:07:14,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1446573421, now seen corresponding path program 14 times [2024-11-08 14:07:14,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:07:14,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571601814] [2024-11-08 14:07:14,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:07:14,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:07:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:07:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 117 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:15,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:07:15,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571601814] [2024-11-08 14:07:15,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571601814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:07:15,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573901594] [2024-11-08 14:07:15,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:07:15,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:07:15,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:07:15,037 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 14:07:15,038 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 14:07:15,098 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:07:15,099 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:07:15,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-08 14:07:15,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:07:15,621 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:15,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:07:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:16,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573901594] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:07:16,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:07:16,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 63 [2024-11-08 14:07:16,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4767128] [2024-11-08 14:07:16,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:07:16,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-08 14:07:16,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:07:16,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-08 14:07:16,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=585, Invalid=3321, Unknown=0, NotChecked=0, Total=3906 [2024-11-08 14:07:16,794 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 63 states, 63 states have (on average 2.0476190476190474) internal successors, (129), 63 states have internal predecessors, (129), 0 states have call successors, (0), 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 14:07:19,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:07:19,178 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2024-11-08 14:07:19,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-08 14:07:19,178 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0476190476190474) internal successors, (129), 63 states have internal predecessors, (129), 0 states have call successors, (0), 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 49 [2024-11-08 14:07:19,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:07:19,179 INFO L225 Difference]: With dead ends: 136 [2024-11-08 14:07:19,179 INFO L226 Difference]: Without dead ends: 97 [2024-11-08 14:07:19,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2321 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1434, Invalid=8072, Unknown=0, NotChecked=0, Total=9506 [2024-11-08 14:07:19,180 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 23 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 14:07:19,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 208 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 14:07:19,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-08 14:07:19,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 66. [2024-11-08 14:07:19,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2) internal successors, (78), 65 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:07:19,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2024-11-08 14:07:19,216 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 49 [2024-11-08 14:07:19,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:07:19,216 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2024-11-08 14:07:19,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.0476190476190474) internal successors, (129), 63 states have internal predecessors, (129), 0 states have call successors, (0), 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 14:07:19,216 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2024-11-08 14:07:19,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 14:07:19,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:07:19,217 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:07:19,229 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 14:07:19,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:07:19,418 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:07:19,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:07:19,418 INFO L85 PathProgramCache]: Analyzing trace with hash -2015197751, now seen corresponding path program 15 times [2024-11-08 14:07:19,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:07:19,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708196567] [2024-11-08 14:07:19,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:07:19,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:07:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:07:20,354 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 145 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:20,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:07:20,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708196567] [2024-11-08 14:07:20,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708196567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:07:20,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118385514] [2024-11-08 14:07:20,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:07:20,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:07:20,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:07:20,356 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 14:07:20,357 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 14:07:20,418 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-08 14:07:20,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:07:20,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-08 14:07:20,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:07:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:21,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:07:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:22,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118385514] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:07:22,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:07:22,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 30] total 82 [2024-11-08 14:07:22,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501005217] [2024-11-08 14:07:22,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:07:22,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-11-08 14:07:22,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:07:22,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-11-08 14:07:22,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=930, Invalid=5712, Unknown=0, NotChecked=0, Total=6642 [2024-11-08 14:07:22,784 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 82 states, 82 states have (on average 1.8414634146341464) internal successors, (151), 82 states have internal predecessors, (151), 0 states have call successors, (0), 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 14:07:25,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:07:25,439 INFO L93 Difference]: Finished difference Result 179 states and 195 transitions. [2024-11-08 14:07:25,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-08 14:07:25,439 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.8414634146341464) internal successors, (151), 82 states have internal predecessors, (151), 0 states have call successors, (0), 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 53 [2024-11-08 14:07:25,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:07:25,440 INFO L225 Difference]: With dead ends: 179 [2024-11-08 14:07:25,440 INFO L226 Difference]: Without dead ends: 137 [2024-11-08 14:07:25,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4191 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2054, Invalid=11988, Unknown=0, NotChecked=0, Total=14042 [2024-11-08 14:07:25,441 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 27 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 14:07:25,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 324 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 14:07:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-08 14:07:25,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 104. [2024-11-08 14:07:25,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.145631067961165) internal successors, (118), 103 states have internal predecessors, (118), 0 states have call successors, (0), 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 14:07:25,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 118 transitions. [2024-11-08 14:07:25,487 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 118 transitions. Word has length 53 [2024-11-08 14:07:25,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:07:25,487 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 118 transitions. [2024-11-08 14:07:25,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.8414634146341464) internal successors, (151), 82 states have internal predecessors, (151), 0 states have call successors, (0), 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 14:07:25,487 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 118 transitions. [2024-11-08 14:07:25,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 14:07:25,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:07:25,488 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:07:25,500 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 14:07:25,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:07:25,688 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:07:25,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:07:25,689 INFO L85 PathProgramCache]: Analyzing trace with hash 895167469, now seen corresponding path program 16 times [2024-11-08 14:07:25,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:07:25,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831706890] [2024-11-08 14:07:25,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:07:25,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:07:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:07:26,735 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 176 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:26,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:07:26,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831706890] [2024-11-08 14:07:26,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831706890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:07:26,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177842540] [2024-11-08 14:07:26,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 14:07:26,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:07:26,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:07:26,737 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 14:07:26,739 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 14:07:26,802 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 14:07:26,802 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:07:26,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-08 14:07:26,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:07:27,423 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:27,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:07:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:28,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177842540] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:07:28,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:07:28,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 73 [2024-11-08 14:07:28,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477857727] [2024-11-08 14:07:28,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:07:28,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-08 14:07:28,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:07:28,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-08 14:07:28,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=778, Invalid=4478, Unknown=0, NotChecked=0, Total=5256 [2024-11-08 14:07:28,955 INFO L87 Difference]: Start difference. First operand 104 states and 118 transitions. Second operand has 73 states, 73 states have (on average 2.0684931506849313) internal successors, (151), 73 states have internal predecessors, (151), 0 states have call successors, (0), 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 14:07:32,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:07:32,175 INFO L93 Difference]: Finished difference Result 225 states and 243 transitions. [2024-11-08 14:07:32,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-08 14:07:32,176 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0684931506849313) internal successors, (151), 73 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-08 14:07:32,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:07:32,176 INFO L225 Difference]: With dead ends: 225 [2024-11-08 14:07:32,176 INFO L226 Difference]: Without dead ends: 180 [2024-11-08 14:07:32,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3157 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1933, Invalid=10949, Unknown=0, NotChecked=0, Total=12882 [2024-11-08 14:07:32,178 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 31 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 1903 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 14:07:32,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 327 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1903 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 14:07:32,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-08 14:07:32,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 145. [2024-11-08 14:07:32,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.125) internal successors, (162), 144 states have internal predecessors, (162), 0 states have call successors, (0), 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 14:07:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2024-11-08 14:07:32,236 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 57 [2024-11-08 14:07:32,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:07:32,236 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2024-11-08 14:07:32,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.0684931506849313) internal successors, (151), 73 states have internal predecessors, (151), 0 states have call successors, (0), 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 14:07:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2024-11-08 14:07:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 14:07:32,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:07:32,237 INFO L215 NwaCegarLoop]: trace histogram [23, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:07:32,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-08 14:07:32,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:07:32,437 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:07:32,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:07:32,438 INFO L85 PathProgramCache]: Analyzing trace with hash 868035437, now seen corresponding path program 17 times [2024-11-08 14:07:32,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:07:32,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131054411] [2024-11-08 14:07:32,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:07:32,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:07:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:07:33,261 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 231 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:33,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:07:33,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131054411] [2024-11-08 14:07:33,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131054411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:07:33,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805668287] [2024-11-08 14:07:33,262 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 14:07:33,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:07:33,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:07:33,263 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 14:07:33,264 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 14:07:33,334 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-08 14:07:33,334 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:07:33,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-08 14:07:33,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:07:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:34,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:07:35,042 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:35,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805668287] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:07:35,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:07:35,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 95 [2024-11-08 14:07:35,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669371710] [2024-11-08 14:07:35,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:07:35,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-11-08 14:07:35,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:07:35,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-11-08 14:07:35,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1896, Invalid=7034, Unknown=0, NotChecked=0, Total=8930 [2024-11-08 14:07:35,045 INFO L87 Difference]: Start difference. First operand 145 states and 162 transitions. Second operand has 95 states, 95 states have (on average 1.5157894736842106) internal successors, (144), 95 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:07:36,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:07:36,494 INFO L93 Difference]: Finished difference Result 531 states and 559 transitions. [2024-11-08 14:07:36,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-08 14:07:36,494 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.5157894736842106) internal successors, (144), 95 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-08 14:07:36,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:07:36,496 INFO L225 Difference]: With dead ends: 531 [2024-11-08 14:07:36,496 INFO L226 Difference]: Without dead ends: 529 [2024-11-08 14:07:36,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6532 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3587, Invalid=15595, Unknown=0, NotChecked=0, Total=19182 [2024-11-08 14:07:36,498 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 37 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 14:07:36,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 352 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 14:07:36,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-08 14:07:36,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 107. [2024-11-08 14:07:36,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.1037735849056605) internal successors, (117), 106 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:07:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2024-11-08 14:07:36,560 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 61 [2024-11-08 14:07:36,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:07:36,561 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2024-11-08 14:07:36,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.5157894736842106) internal successors, (144), 95 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:07:36,561 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2024-11-08 14:07:36,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 14:07:36,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:07:36,561 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:07:36,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-08 14:07:36,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-08 14:07:36,762 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:07:36,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:07:36,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1253672777, now seen corresponding path program 18 times [2024-11-08 14:07:36,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:07:36,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438500058] [2024-11-08 14:07:36,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:07:36,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:07:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:07:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 210 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:37,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:07:37,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438500058] [2024-11-08 14:07:37,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438500058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:07:37,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110653619] [2024-11-08 14:07:37,996 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 14:07:37,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:07:37,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:07:37,997 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:07:37,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 14:07:38,069 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-08 14:07:38,069 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:07:38,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-08 14:07:38,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:07:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:39,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:07:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:41,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110653619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:07:41,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:07:41,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34, 34] total 96 [2024-11-08 14:07:41,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608869783] [2024-11-08 14:07:41,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:07:41,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-08 14:07:41,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:07:41,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-08 14:07:41,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1099, Invalid=8021, Unknown=0, NotChecked=0, Total=9120 [2024-11-08 14:07:41,362 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand has 96 states, 96 states have (on average 1.8333333333333333) internal successors, (176), 96 states have internal predecessors, (176), 0 states have call successors, (0), 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 14:07:44,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:07:44,521 INFO L93 Difference]: Finished difference Result 154 states and 165 transitions. [2024-11-08 14:07:44,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-08 14:07:44,521 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.8333333333333333) internal successors, (176), 96 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-08 14:07:44,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:07:44,522 INFO L225 Difference]: With dead ends: 154 [2024-11-08 14:07:44,522 INFO L226 Difference]: Without dead ends: 106 [2024-11-08 14:07:44,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4728 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2258, Invalid=16648, Unknown=0, NotChecked=0, Total=18906 [2024-11-08 14:07:44,524 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 52 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 14:07:44,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 103 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 14:07:44,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-08 14:07:44,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-08 14:07:44,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0952380952380953) internal successors, (115), 105 states have internal predecessors, (115), 0 states have call successors, (0), 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 14:07:44,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2024-11-08 14:07:44,575 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 61 [2024-11-08 14:07:44,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:07:44,575 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2024-11-08 14:07:44,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.8333333333333333) internal successors, (176), 96 states have internal predecessors, (176), 0 states have call successors, (0), 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 14:07:44,575 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2024-11-08 14:07:44,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 14:07:44,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:07:44,576 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:07:44,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-08 14:07:44,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-08 14:07:44,776 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:07:44,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:07:44,777 INFO L85 PathProgramCache]: Analyzing trace with hash -576617875, now seen corresponding path program 19 times [2024-11-08 14:07:44,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:07:44,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016720463] [2024-11-08 14:07:44,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:07:44,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:07:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:07:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 247 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:46,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:07:46,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016720463] [2024-11-08 14:07:46,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016720463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:07:46,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439107282] [2024-11-08 14:07:46,054 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 14:07:46,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:07:46,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:07:46,055 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:07:46,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 14:07:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:07:46,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-08 14:07:46,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:07:46,902 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:46,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:07:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:48,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439107282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:07:48,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:07:48,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 83 [2024-11-08 14:07:48,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887394848] [2024-11-08 14:07:48,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:07:48,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-08 14:07:48,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:07:48,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-08 14:07:48,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=999, Invalid=5807, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 14:07:48,848 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand has 83 states, 83 states have (on average 2.0843373493975905) internal successors, (173), 83 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 14:07:53,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:07:53,312 INFO L93 Difference]: Finished difference Result 525 states and 543 transitions. [2024-11-08 14:07:53,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-08 14:07:53,312 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0843373493975905) internal successors, (173), 83 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) Word has length 65 [2024-11-08 14:07:53,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:07:53,314 INFO L225 Difference]: With dead ends: 525 [2024-11-08 14:07:53,314 INFO L226 Difference]: Without dead ends: 474 [2024-11-08 14:07:53,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2508, Invalid=14262, Unknown=0, NotChecked=0, Total=16770 [2024-11-08 14:07:53,316 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 2640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:07:53,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 340 Invalid, 2640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 14:07:53,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-11-08 14:07:53,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 105. [2024-11-08 14:07:53,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.0865384615384615) internal successors, (113), 104 states have internal predecessors, (113), 0 states have call successors, (0), 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 14:07:53,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2024-11-08 14:07:53,384 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 65 [2024-11-08 14:07:53,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:07:53,384 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2024-11-08 14:07:53,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.0843373493975905) internal successors, (173), 83 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 14:07:53,384 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2024-11-08 14:07:53,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 14:07:53,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:07:53,385 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:07:53,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-08 14:07:53,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:07:53,590 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:07:53,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:07:53,590 INFO L85 PathProgramCache]: Analyzing trace with hash -181376823, now seen corresponding path program 20 times [2024-11-08 14:07:53,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:07:53,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834962730] [2024-11-08 14:07:53,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:07:53,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:07:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:07:55,049 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 287 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:55,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:07:55,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834962730] [2024-11-08 14:07:55,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834962730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:07:55,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11331863] [2024-11-08 14:07:55,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:07:55,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:07:55,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:07:55,051 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:07:55,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 14:07:55,125 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:07:55,125 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:07:55,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-08 14:07:55,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:07:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 0 proven. 481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:55,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:07:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 0 proven. 481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:07:58,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11331863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:07:58,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:07:58,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 88 [2024-11-08 14:07:58,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353226439] [2024-11-08 14:07:58,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:07:58,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-08 14:07:58,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:07:58,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-08 14:07:58,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1120, Invalid=6536, Unknown=0, NotChecked=0, Total=7656 [2024-11-08 14:07:58,074 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand has 88 states, 88 states have (on average 2.090909090909091) internal successors, (184), 88 states have internal predecessors, (184), 0 states have call successors, (0), 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 14:08:03,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:08:03,182 INFO L93 Difference]: Finished difference Result 505 states and 524 transitions. [2024-11-08 14:08:03,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-08 14:08:03,183 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.090909090909091) internal successors, (184), 88 states have internal predecessors, (184), 0 states have call successors, (0), 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 69 [2024-11-08 14:08:03,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:08:03,184 INFO L225 Difference]: With dead ends: 505 [2024-11-08 14:08:03,184 INFO L226 Difference]: Without dead ends: 451 [2024-11-08 14:08:03,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4702 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2824, Invalid=16082, Unknown=0, NotChecked=0, Total=18906 [2024-11-08 14:08:03,185 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 30 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:08:03,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 366 Invalid, 2835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 14:08:03,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2024-11-08 14:08:03,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 104. [2024-11-08 14:08:03,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0776699029126213) internal successors, (111), 103 states have internal predecessors, (111), 0 states have call successors, (0), 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 14:08:03,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2024-11-08 14:08:03,256 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 69 [2024-11-08 14:08:03,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:08:03,256 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 111 transitions. [2024-11-08 14:08:03,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.090909090909091) internal successors, (184), 88 states have internal predecessors, (184), 0 states have call successors, (0), 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 14:08:03,257 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 111 transitions. [2024-11-08 14:08:03,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 14:08:03,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:08:03,257 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:08:03,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-08 14:08:03,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:08:03,458 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:08:03,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:08:03,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1267468051, now seen corresponding path program 21 times [2024-11-08 14:08:03,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:08:03,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389466514] [2024-11-08 14:08:03,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:08:03,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:08:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:08:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 330 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:08:05,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:08:05,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389466514] [2024-11-08 14:08:05,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389466514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:08:05,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284275611] [2024-11-08 14:08:05,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:08:05,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:08:05,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:08:05,211 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:08:05,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 14:08:05,295 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-08 14:08:05,295 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:08:05,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-08 14:08:05,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:08:06,901 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 0 proven. 545 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:08:06,901 INFO L311 TraceCheckSpWp]: Computing backward predicates...