/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:04:28,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:04:28,789 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 01:04:28,793 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:04:28,794 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:04:28,811 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:04:28,812 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:04:28,812 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:04:28,813 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:04:28,813 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:04:28,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:04:28,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:04:28,814 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:04:28,814 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:04:28,815 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:04:28,815 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:04:28,815 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:04:28,816 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:04:28,816 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:04:28,816 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:04:28,817 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:04:28,817 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:04:28,817 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:04:28,818 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:04:28,818 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:04:28,818 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:04:28,818 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:04:28,819 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:04:28,819 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:04:28,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:04:28,820 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:04:28,820 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:04:28,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:04:28,820 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:04:28,821 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:04:28,821 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:04:28,821 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:04:28,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:04:28,822 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:04:28,822 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:04:28,822 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:04:28,825 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:04:28,825 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:04:28,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:04:29,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:04:29,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:04:29,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:04:29,068 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:04:29,070 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:04:29,070 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2023-12-20 01:04:30,256 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:04:30,434 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:04:30,435 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2023-12-20 01:04:30,447 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/556824a4b/4bf317e2437341f4b7a8df39f989a789/FLAGb9fbd9f39 [2023-12-20 01:04:30,461 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/556824a4b/4bf317e2437341f4b7a8df39f989a789 [2023-12-20 01:04:30,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:04:30,465 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:04:30,466 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:04:30,466 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:04:30,475 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:04:30,476 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:04:30" (1/1) ... [2023-12-20 01:04:30,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bd416a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:04:30, skipping insertion in model container [2023-12-20 01:04:30,477 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:04:30" (1/1) ... [2023-12-20 01:04:30,511 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:04:30,723 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c[12667,12680] [2023-12-20 01:04:30,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:04:30,753 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:04:30,820 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c[12667,12680] [2023-12-20 01:04:30,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:04:30,833 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:04:30,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:04:30 WrapperNode [2023-12-20 01:04:30,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:04:30,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:04:30,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:04:30,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:04:30,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:04:30" (1/1) ... [2023-12-20 01:04:30,848 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:04:30" (1/1) ... [2023-12-20 01:04:30,891 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 371 [2023-12-20 01:04:30,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:04:30,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:04:30,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:04:30,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:04:30,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:04:30" (1/1) ... [2023-12-20 01:04:30,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:04:30" (1/1) ... [2023-12-20 01:04:30,909 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:04:30" (1/1) ... [2023-12-20 01:04:30,931 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]. [2023-12-20 01:04:30,931 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:04:30" (1/1) ... [2023-12-20 01:04:30,931 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:04:30" (1/1) ... [2023-12-20 01:04:30,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:04:30" (1/1) ... [2023-12-20 01:04:30,948 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:04:30" (1/1) ... [2023-12-20 01:04:30,950 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:04:30" (1/1) ... [2023-12-20 01:04:30,965 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:04:30" (1/1) ... [2023-12-20 01:04:30,968 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:04:30,969 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:04:30,969 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:04:30,969 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:04:30,970 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:04:30" (1/1) ... [2023-12-20 01:04:30,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:04:31,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:04:31,022 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) [2023-12-20 01:04:31,043 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 [2023-12-20 01:04:31,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:04:31,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:04:31,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:04:31,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:04:31,135 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:04:31,138 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:04:31,498 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:04:31,545 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:04:31,546 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:04:31,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:04:31 BoogieIcfgContainer [2023-12-20 01:04:31,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:04:31,548 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:04:31,548 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:04:31,551 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:04:31,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:04:30" (1/3) ... [2023-12-20 01:04:31,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6ce033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:04:31, skipping insertion in model container [2023-12-20 01:04:31,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:04:30" (2/3) ... [2023-12-20 01:04:31,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6ce033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:04:31, skipping insertion in model container [2023-12-20 01:04:31,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:04:31" (3/3) ... [2023-12-20 01:04:31,553 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2023-12-20 01:04:31,565 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:04:31,565 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:04:31,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:04:31,608 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@660621e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:04:31,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:04:31,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 96 states have (on average 1.78125) internal successors, (171), 97 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:31,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-20 01:04:31,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:31,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:31,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:31,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:31,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1398938888, now seen corresponding path program 1 times [2023-12-20 01:04:31,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:31,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119397932] [2023-12-20 01:04:31,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:31,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:31,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:31,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119397932] [2023-12-20 01:04:31,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119397932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:31,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:31,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 01:04:31,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91291145] [2023-12-20 01:04:31,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:31,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 01:04:31,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:31,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 01:04:31,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:04:31,923 INFO L87 Difference]: Start difference. First operand has 98 states, 96 states have (on average 1.78125) internal successors, (171), 97 states have internal predecessors, (171), 0 states have call successors, (0), 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:31,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:31,999 INFO L93 Difference]: Finished difference Result 159 states and 273 transitions. [2023-12-20 01:04:32,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 01:04:32,001 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 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 30 [2023-12-20 01:04:32,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:32,010 INFO L225 Difference]: With dead ends: 159 [2023-12-20 01:04:32,010 INFO L226 Difference]: Without dead ends: 96 [2023-12-20 01:04:32,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:04:32,017 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:32,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 163 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:32,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-20 01:04:32,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-12-20 01:04:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.7473684210526317) internal successors, (166), 95 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:32,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 166 transitions. [2023-12-20 01:04:32,062 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 166 transitions. Word has length 30 [2023-12-20 01:04:32,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:32,063 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 166 transitions. [2023-12-20 01:04:32,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:32,063 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 166 transitions. [2023-12-20 01:04:32,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-20 01:04:32,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:32,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:32,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:04:32,067 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:32,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:32,068 INFO L85 PathProgramCache]: Analyzing trace with hash 524289146, now seen corresponding path program 1 times [2023-12-20 01:04:32,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:32,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846565087] [2023-12-20 01:04:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:32,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:32,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:32,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:32,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846565087] [2023-12-20 01:04:32,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846565087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:32,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:32,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:04:32,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615053580] [2023-12-20 01:04:32,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:32,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:04:32,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:32,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:04:32,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:04:32,398 INFO L87 Difference]: Start difference. First operand 96 states and 166 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:32,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:32,483 INFO L93 Difference]: Finished difference Result 159 states and 267 transitions. [2023-12-20 01:04:32,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:04:32,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 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 30 [2023-12-20 01:04:32,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:32,487 INFO L225 Difference]: With dead ends: 159 [2023-12-20 01:04:32,487 INFO L226 Difference]: Without dead ends: 96 [2023-12-20 01:04:32,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:04:32,489 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 0 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:32,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 454 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:04:32,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-20 01:04:32,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-12-20 01:04:32,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.4105263157894736) internal successors, (134), 95 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:32,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 134 transitions. [2023-12-20 01:04:32,495 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 134 transitions. Word has length 30 [2023-12-20 01:04:32,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:32,495 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 134 transitions. [2023-12-20 01:04:32,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:32,495 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 134 transitions. [2023-12-20 01:04:32,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 01:04:32,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:32,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:32,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:04:32,505 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:32,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:32,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1941406465, now seen corresponding path program 1 times [2023-12-20 01:04:32,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:32,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920930117] [2023-12-20 01:04:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:32,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:32,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:32,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:32,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920930117] [2023-12-20 01:04:32,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920930117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:32,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:32,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:32,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553755608] [2023-12-20 01:04:32,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:32,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:32,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:32,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:32,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:32,642 INFO L87 Difference]: Start difference. First operand 96 states and 134 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:32,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:32,672 INFO L93 Difference]: Finished difference Result 208 states and 316 transitions. [2023-12-20 01:04:32,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:32,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 [2023-12-20 01:04:32,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:32,676 INFO L225 Difference]: With dead ends: 208 [2023-12-20 01:04:32,676 INFO L226 Difference]: Without dead ends: 148 [2023-12-20 01:04:32,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:32,677 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 78 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:32,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 277 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-20 01:04:32,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2023-12-20 01:04:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.4896551724137932) internal successors, (216), 145 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:32,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 216 transitions. [2023-12-20 01:04:32,687 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 216 transitions. Word has length 61 [2023-12-20 01:04:32,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:32,687 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 216 transitions. [2023-12-20 01:04:32,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:32,688 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 216 transitions. [2023-12-20 01:04:32,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 01:04:32,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:32,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:32,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:04:32,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:32,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:32,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1144648734, now seen corresponding path program 1 times [2023-12-20 01:04:32,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:32,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386690107] [2023-12-20 01:04:32,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:32,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:32,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:32,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386690107] [2023-12-20 01:04:32,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386690107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:32,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:32,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:04:32,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110663036] [2023-12-20 01:04:32,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:32,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:04:32,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:32,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:04:32,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:04:32,859 INFO L87 Difference]: Start difference. First operand 146 states and 216 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:33,025 INFO L93 Difference]: Finished difference Result 806 states and 1296 transitions. [2023-12-20 01:04:33,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:04:33,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 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 [2023-12-20 01:04:33,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:33,032 INFO L225 Difference]: With dead ends: 806 [2023-12-20 01:04:33,032 INFO L226 Difference]: Without dead ends: 696 [2023-12-20 01:04:33,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-20 01:04:33,045 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 1296 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:33,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1296 Valid, 838 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:04:33,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-12-20 01:04:33,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 254. [2023-12-20 01:04:33,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5454545454545454) internal successors, (391), 253 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 391 transitions. [2023-12-20 01:04:33,082 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 391 transitions. Word has length 61 [2023-12-20 01:04:33,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:33,083 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 391 transitions. [2023-12-20 01:04:33,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,083 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 391 transitions. [2023-12-20 01:04:33,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 01:04:33,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:33,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:33,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:04:33,084 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:33,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:33,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1111312794, now seen corresponding path program 1 times [2023-12-20 01:04:33,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:33,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045328828] [2023-12-20 01:04:33,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:33,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:33,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:33,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:33,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045328828] [2023-12-20 01:04:33,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045328828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:33,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:33,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:04:33,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616142033] [2023-12-20 01:04:33,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:33,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:04:33,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:33,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:04:33,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:04:33,286 INFO L87 Difference]: Start difference. First operand 254 states and 391 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:33,307 INFO L93 Difference]: Finished difference Result 268 states and 408 transitions. [2023-12-20 01:04:33,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:04:33,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 01:04:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:33,309 INFO L225 Difference]: With dead ends: 268 [2023-12-20 01:04:33,309 INFO L226 Difference]: Without dead ends: 266 [2023-12-20 01:04:33,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:04:33,310 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 1 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:33,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 383 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:33,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-12-20 01:04:33,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 262. [2023-12-20 01:04:33,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 1.528735632183908) internal successors, (399), 261 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 399 transitions. [2023-12-20 01:04:33,320 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 399 transitions. Word has length 62 [2023-12-20 01:04:33,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:33,321 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 399 transitions. [2023-12-20 01:04:33,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,321 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 399 transitions. [2023-12-20 01:04:33,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 01:04:33,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:33,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:33,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:04:33,322 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:33,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:33,323 INFO L85 PathProgramCache]: Analyzing trace with hash 91960006, now seen corresponding path program 1 times [2023-12-20 01:04:33,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:33,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360579042] [2023-12-20 01:04:33,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:33,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:33,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:33,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:33,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360579042] [2023-12-20 01:04:33,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360579042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:33,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:33,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:33,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583659433] [2023-12-20 01:04:33,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:33,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:33,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:33,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:33,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:33,390 INFO L87 Difference]: Start difference. First operand 262 states and 399 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:33,412 INFO L93 Difference]: Finished difference Result 686 states and 1077 transitions. [2023-12-20 01:04:33,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:33,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-20 01:04:33,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:33,415 INFO L225 Difference]: With dead ends: 686 [2023-12-20 01:04:33,415 INFO L226 Difference]: Without dead ends: 460 [2023-12-20 01:04:33,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:33,417 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 62 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:33,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 220 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:33,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-12-20 01:04:33,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 454. [2023-12-20 01:04:33,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.5474613686534215) internal successors, (701), 453 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 701 transitions. [2023-12-20 01:04:33,430 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 701 transitions. Word has length 63 [2023-12-20 01:04:33,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:33,431 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 701 transitions. [2023-12-20 01:04:33,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,431 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 701 transitions. [2023-12-20 01:04:33,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 01:04:33,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:33,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:33,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:04:33,432 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:33,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:33,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1478259839, now seen corresponding path program 1 times [2023-12-20 01:04:33,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:33,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989099966] [2023-12-20 01:04:33,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:33,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:33,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:33,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989099966] [2023-12-20 01:04:33,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989099966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:33,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:33,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:33,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351867084] [2023-12-20 01:04:33,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:33,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:33,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:33,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:33,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:33,478 INFO L87 Difference]: Start difference. First operand 454 states and 701 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:33,506 INFO L93 Difference]: Finished difference Result 1226 states and 1919 transitions. [2023-12-20 01:04:33,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:33,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 01:04:33,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:33,524 INFO L225 Difference]: With dead ends: 1226 [2023-12-20 01:04:33,524 INFO L226 Difference]: Without dead ends: 808 [2023-12-20 01:04:33,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:33,525 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 70 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:33,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 262 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:33,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2023-12-20 01:04:33,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 806. [2023-12-20 01:04:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 805 states have (on average 1.546583850931677) internal successors, (1245), 805 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1245 transitions. [2023-12-20 01:04:33,561 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1245 transitions. Word has length 64 [2023-12-20 01:04:33,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:33,562 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1245 transitions. [2023-12-20 01:04:33,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,562 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1245 transitions. [2023-12-20 01:04:33,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 01:04:33,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:33,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:33,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:04:33,564 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:33,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:33,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1951988575, now seen corresponding path program 1 times [2023-12-20 01:04:33,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:33,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140702405] [2023-12-20 01:04:33,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:33,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:33,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:33,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:33,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140702405] [2023-12-20 01:04:33,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140702405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:33,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:33,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:33,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26632758] [2023-12-20 01:04:33,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:33,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:33,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:33,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:33,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:33,639 INFO L87 Difference]: Start difference. First operand 806 states and 1245 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:33,689 INFO L93 Difference]: Finished difference Result 2218 states and 3439 transitions. [2023-12-20 01:04:33,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:33,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 01:04:33,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:33,694 INFO L225 Difference]: With dead ends: 2218 [2023-12-20 01:04:33,694 INFO L226 Difference]: Without dead ends: 1448 [2023-12-20 01:04:33,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:33,697 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 74 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:33,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 275 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2023-12-20 01:04:33,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1446. [2023-12-20 01:04:33,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1445 states have (on average 1.5314878892733563) internal successors, (2213), 1445 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 2213 transitions. [2023-12-20 01:04:33,736 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 2213 transitions. Word has length 64 [2023-12-20 01:04:33,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:33,737 INFO L495 AbstractCegarLoop]: Abstraction has 1446 states and 2213 transitions. [2023-12-20 01:04:33,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 2213 transitions. [2023-12-20 01:04:33,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 01:04:33,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:33,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:33,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:04:33,739 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:33,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:33,739 INFO L85 PathProgramCache]: Analyzing trace with hash -762231071, now seen corresponding path program 1 times [2023-12-20 01:04:33,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:33,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864049305] [2023-12-20 01:04:33,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:33,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:33,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:33,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864049305] [2023-12-20 01:04:33,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864049305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:33,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:33,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:33,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247547943] [2023-12-20 01:04:33,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:33,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:33,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:33,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:33,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:33,814 INFO L87 Difference]: Start difference. First operand 1446 states and 2213 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:33,871 INFO L93 Difference]: Finished difference Result 4010 states and 6119 transitions. [2023-12-20 01:04:33,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:33,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 01:04:33,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:33,882 INFO L225 Difference]: With dead ends: 4010 [2023-12-20 01:04:33,882 INFO L226 Difference]: Without dead ends: 2600 [2023-12-20 01:04:33,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:33,888 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 82 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:33,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 291 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2023-12-20 01:04:33,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2598. [2023-12-20 01:04:33,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2598 states, 2597 states have (on average 1.5051983057373892) internal successors, (3909), 2597 states have internal predecessors, (3909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 3909 transitions. [2023-12-20 01:04:33,955 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 3909 transitions. Word has length 64 [2023-12-20 01:04:33,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:33,955 INFO L495 AbstractCegarLoop]: Abstraction has 2598 states and 3909 transitions. [2023-12-20 01:04:33,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:33,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 3909 transitions. [2023-12-20 01:04:33,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 01:04:33,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:33,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:33,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:04:33,957 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:33,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:33,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1698265465, now seen corresponding path program 1 times [2023-12-20 01:04:33,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:33,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634498903] [2023-12-20 01:04:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:33,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:34,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:34,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634498903] [2023-12-20 01:04:34,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634498903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:34,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:34,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:34,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996422461] [2023-12-20 01:04:34,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:34,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:34,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:34,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:34,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:34,011 INFO L87 Difference]: Start difference. First operand 2598 states and 3909 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2023-12-20 01:04:34,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:34,078 INFO L93 Difference]: Finished difference Result 5133 states and 7787 transitions. [2023-12-20 01:04:34,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:34,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) Word has length 65 [2023-12-20 01:04:34,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:34,092 INFO L225 Difference]: With dead ends: 5133 [2023-12-20 01:04:34,092 INFO L226 Difference]: Without dead ends: 3722 [2023-12-20 01:04:34,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:34,096 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 83 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:34,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 302 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:34,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2023-12-20 01:04:34,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 3720. [2023-12-20 01:04:34,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3719 states have (on average 1.4990588867975263) internal successors, (5575), 3719 states have internal predecessors, (5575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:34,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 5575 transitions. [2023-12-20 01:04:34,203 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 5575 transitions. Word has length 65 [2023-12-20 01:04:34,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:34,203 INFO L495 AbstractCegarLoop]: Abstraction has 3720 states and 5575 transitions. [2023-12-20 01:04:34,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2023-12-20 01:04:34,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 5575 transitions. [2023-12-20 01:04:34,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 01:04:34,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:34,206 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:34,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:04:34,206 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:34,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:34,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1264465898, now seen corresponding path program 1 times [2023-12-20 01:04:34,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:34,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112087182] [2023-12-20 01:04:34,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:34,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 01:04:34,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:34,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112087182] [2023-12-20 01:04:34,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112087182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:34,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:34,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:04:34,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470073971] [2023-12-20 01:04:34,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:34,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:04:34,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:34,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:04:34,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:04:34,403 INFO L87 Difference]: Start difference. First operand 3720 states and 5575 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:34,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:34,650 INFO L93 Difference]: Finished difference Result 12388 states and 18813 transitions. [2023-12-20 01:04:34,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:04:34,651 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 90 [2023-12-20 01:04:34,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:34,686 INFO L225 Difference]: With dead ends: 12388 [2023-12-20 01:04:34,686 INFO L226 Difference]: Without dead ends: 10530 [2023-12-20 01:04:34,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 01:04:34,692 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 963 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:34,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 861 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:04:34,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10530 states. [2023-12-20 01:04:34,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10530 to 5544. [2023-12-20 01:04:34,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5544 states, 5543 states have (on average 1.4993685729749233) internal successors, (8311), 5543 states have internal predecessors, (8311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5544 states to 5544 states and 8311 transitions. [2023-12-20 01:04:34,941 INFO L78 Accepts]: Start accepts. Automaton has 5544 states and 8311 transitions. Word has length 90 [2023-12-20 01:04:34,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:34,942 INFO L495 AbstractCegarLoop]: Abstraction has 5544 states and 8311 transitions. [2023-12-20 01:04:34,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:34,942 INFO L276 IsEmpty]: Start isEmpty. Operand 5544 states and 8311 transitions. [2023-12-20 01:04:34,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 01:04:34,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:34,945 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:34,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 01:04:34,946 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:34,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:34,946 INFO L85 PathProgramCache]: Analyzing trace with hash -974940887, now seen corresponding path program 1 times [2023-12-20 01:04:34,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:34,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476092433] [2023-12-20 01:04:34,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:34,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:35,120 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 01:04:35,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:35,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476092433] [2023-12-20 01:04:35,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476092433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:35,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:35,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:04:35,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234147052] [2023-12-20 01:04:35,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:35,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:04:35,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:35,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:04:35,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:04:35,122 INFO L87 Difference]: Start difference. First operand 5544 states and 8311 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:35,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:35,461 INFO L93 Difference]: Finished difference Result 14212 states and 21549 transitions. [2023-12-20 01:04:35,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:04:35,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 90 [2023-12-20 01:04:35,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:35,506 INFO L225 Difference]: With dead ends: 14212 [2023-12-20 01:04:35,506 INFO L226 Difference]: Without dead ends: 12354 [2023-12-20 01:04:35,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 01:04:35,512 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 929 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:35,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 885 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:04:35,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12354 states. [2023-12-20 01:04:35,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12354 to 7368. [2023-12-20 01:04:35,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7368 states, 7367 states have (on average 1.4995249083751867) internal successors, (11047), 7367 states have internal predecessors, (11047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:35,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7368 states to 7368 states and 11047 transitions. [2023-12-20 01:04:35,805 INFO L78 Accepts]: Start accepts. Automaton has 7368 states and 11047 transitions. Word has length 90 [2023-12-20 01:04:35,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:35,805 INFO L495 AbstractCegarLoop]: Abstraction has 7368 states and 11047 transitions. [2023-12-20 01:04:35,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:35,805 INFO L276 IsEmpty]: Start isEmpty. Operand 7368 states and 11047 transitions. [2023-12-20 01:04:35,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 01:04:35,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:35,809 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:35,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:04:35,809 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:35,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:35,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1448669623, now seen corresponding path program 1 times [2023-12-20 01:04:35,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:35,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270875139] [2023-12-20 01:04:35,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:35,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:35,964 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 01:04:35,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:35,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270875139] [2023-12-20 01:04:35,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270875139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:35,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:35,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:04:35,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089756829] [2023-12-20 01:04:35,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:35,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:04:35,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:35,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:04:35,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:04:35,967 INFO L87 Difference]: Start difference. First operand 7368 states and 11047 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:36,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:36,296 INFO L93 Difference]: Finished difference Result 16036 states and 24285 transitions. [2023-12-20 01:04:36,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:04:36,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-20 01:04:36,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:36,330 INFO L225 Difference]: With dead ends: 16036 [2023-12-20 01:04:36,330 INFO L226 Difference]: Without dead ends: 14178 [2023-12-20 01:04:36,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 01:04:36,340 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 840 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:36,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 944 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:04:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14178 states. [2023-12-20 01:04:36,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14178 to 9192. [2023-12-20 01:04:36,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9192 states, 9191 states have (on average 1.4996191926884996) internal successors, (13783), 9191 states have internal predecessors, (13783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:36,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9192 states to 9192 states and 13783 transitions. [2023-12-20 01:04:36,677 INFO L78 Accepts]: Start accepts. Automaton has 9192 states and 13783 transitions. Word has length 90 [2023-12-20 01:04:36,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:36,677 INFO L495 AbstractCegarLoop]: Abstraction has 9192 states and 13783 transitions. [2023-12-20 01:04:36,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:36,678 INFO L276 IsEmpty]: Start isEmpty. Operand 9192 states and 13783 transitions. [2023-12-20 01:04:36,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 01:04:36,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:36,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:36,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:04:36,682 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:36,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:36,683 INFO L85 PathProgramCache]: Analyzing trace with hash -449504789, now seen corresponding path program 1 times [2023-12-20 01:04:36,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:36,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636333210] [2023-12-20 01:04:36,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:36,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:36,832 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 01:04:36,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:36,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636333210] [2023-12-20 01:04:36,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636333210] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:36,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:36,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:04:36,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521996429] [2023-12-20 01:04:36,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:36,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:04:36,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:36,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:04:36,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:04:36,834 INFO L87 Difference]: Start difference. First operand 9192 states and 13783 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:37,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:37,224 INFO L93 Difference]: Finished difference Result 17860 states and 27021 transitions. [2023-12-20 01:04:37,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:04:37,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 90 [2023-12-20 01:04:37,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:37,259 INFO L225 Difference]: With dead ends: 17860 [2023-12-20 01:04:37,259 INFO L226 Difference]: Without dead ends: 16002 [2023-12-20 01:04:37,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 01:04:37,271 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 864 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:37,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 1020 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:04:37,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16002 states. [2023-12-20 01:04:37,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16002 to 11016. [2023-12-20 01:04:37,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11016 states, 11015 states have (on average 1.499682251475261) internal successors, (16519), 11015 states have internal predecessors, (16519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:37,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11016 states to 11016 states and 16519 transitions. [2023-12-20 01:04:37,678 INFO L78 Accepts]: Start accepts. Automaton has 11016 states and 16519 transitions. Word has length 90 [2023-12-20 01:04:37,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:37,678 INFO L495 AbstractCegarLoop]: Abstraction has 11016 states and 16519 transitions. [2023-12-20 01:04:37,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:37,679 INFO L276 IsEmpty]: Start isEmpty. Operand 11016 states and 16519 transitions. [2023-12-20 01:04:37,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 01:04:37,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:37,683 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:37,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 01:04:37,684 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:37,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:37,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1586866657, now seen corresponding path program 1 times [2023-12-20 01:04:37,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:37,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79564211] [2023-12-20 01:04:37,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:37,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:37,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:37,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79564211] [2023-12-20 01:04:37,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79564211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:37,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:37,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:37,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038577420] [2023-12-20 01:04:37,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:37,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:37,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:37,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:37,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:37,813 INFO L87 Difference]: Start difference. First operand 11016 states and 16519 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:37,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:37,998 INFO L93 Difference]: Finished difference Result 21996 states and 33001 transitions. [2023-12-20 01:04:37,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:37,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2023-12-20 01:04:37,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:38,023 INFO L225 Difference]: With dead ends: 21996 [2023-12-20 01:04:38,023 INFO L226 Difference]: Without dead ends: 11018 [2023-12-20 01:04:38,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:38,039 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 66 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:38,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 290 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:38,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11018 states. [2023-12-20 01:04:38,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11018 to 11016. [2023-12-20 01:04:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11016 states, 11015 states have (on average 1.486609169314571) internal successors, (16375), 11015 states have internal predecessors, (16375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11016 states to 11016 states and 16375 transitions. [2023-12-20 01:04:38,392 INFO L78 Accepts]: Start accepts. Automaton has 11016 states and 16375 transitions. Word has length 91 [2023-12-20 01:04:38,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:38,393 INFO L495 AbstractCegarLoop]: Abstraction has 11016 states and 16375 transitions. [2023-12-20 01:04:38,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:38,393 INFO L276 IsEmpty]: Start isEmpty. Operand 11016 states and 16375 transitions. [2023-12-20 01:04:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 01:04:38,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:38,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:38,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 01:04:38,396 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:38,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:38,397 INFO L85 PathProgramCache]: Analyzing trace with hash -187895232, now seen corresponding path program 1 times [2023-12-20 01:04:38,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:38,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325815623] [2023-12-20 01:04:38,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:38,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:38,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:38,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325815623] [2023-12-20 01:04:38,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325815623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:38,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:38,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:38,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930272187] [2023-12-20 01:04:38,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:38,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:38,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:38,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:38,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:38,485 INFO L87 Difference]: Start difference. First operand 11016 states and 16375 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:38,648 INFO L93 Difference]: Finished difference Result 16508 states and 24545 transitions. [2023-12-20 01:04:38,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:38,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2023-12-20 01:04:38,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:38,659 INFO L225 Difference]: With dead ends: 16508 [2023-12-20 01:04:38,659 INFO L226 Difference]: Without dead ends: 5530 [2023-12-20 01:04:38,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:38,668 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 60 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:38,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 268 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:38,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5530 states. [2023-12-20 01:04:38,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5530 to 5528. [2023-12-20 01:04:38,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5528 states, 5527 states have (on average 1.4718653880948074) internal successors, (8135), 5527 states have internal predecessors, (8135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:38,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 8135 transitions. [2023-12-20 01:04:38,801 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 8135 transitions. Word has length 91 [2023-12-20 01:04:38,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:38,802 INFO L495 AbstractCegarLoop]: Abstraction has 5528 states and 8135 transitions. [2023-12-20 01:04:38,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:38,802 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 8135 transitions. [2023-12-20 01:04:38,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 01:04:38,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:38,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:38,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 01:04:38,804 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:38,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:38,805 INFO L85 PathProgramCache]: Analyzing trace with hash 318390113, now seen corresponding path program 1 times [2023-12-20 01:04:38,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:38,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164271685] [2023-12-20 01:04:38,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:38,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:38,891 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:38,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:38,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164271685] [2023-12-20 01:04:38,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164271685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:38,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:38,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:38,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38934444] [2023-12-20 01:04:38,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:38,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:38,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:38,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:38,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:38,893 INFO L87 Difference]: Start difference. First operand 5528 states and 8135 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:38,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:38,956 INFO L93 Difference]: Finished difference Result 8276 states and 12185 transitions. [2023-12-20 01:04:38,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:38,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2023-12-20 01:04:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:38,962 INFO L225 Difference]: With dead ends: 8276 [2023-12-20 01:04:38,962 INFO L226 Difference]: Without dead ends: 2786 [2023-12-20 01:04:38,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:38,967 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 54 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:38,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 249 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:38,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2023-12-20 01:04:39,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2784. [2023-12-20 01:04:39,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2783 states have (on average 1.4556234279554439) internal successors, (4051), 2783 states have internal predecessors, (4051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:39,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4051 transitions. [2023-12-20 01:04:39,037 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4051 transitions. Word has length 91 [2023-12-20 01:04:39,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:39,037 INFO L495 AbstractCegarLoop]: Abstraction has 2784 states and 4051 transitions. [2023-12-20 01:04:39,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:39,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4051 transitions. [2023-12-20 01:04:39,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 01:04:39,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:39,039 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:39,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 01:04:39,039 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:39,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:39,039 INFO L85 PathProgramCache]: Analyzing trace with hash -2024454910, now seen corresponding path program 1 times [2023-12-20 01:04:39,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:39,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555461506] [2023-12-20 01:04:39,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:39,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:40,779 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:40,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:40,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555461506] [2023-12-20 01:04:40,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555461506] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:04:40,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616778423] [2023-12-20 01:04:40,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:40,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:40,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:04:40,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:04:40,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 01:04:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:41,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 01:04:41,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:04:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:04:41,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:04:41,347 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:04:41,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616778423] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:04:41,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:04:41,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 16 [2023-12-20 01:04:41,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417086390] [2023-12-20 01:04:41,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:04:41,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 01:04:41,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:41,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 01:04:41,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-20 01:04:41,349 INFO L87 Difference]: Start difference. First operand 2784 states and 4051 transitions. Second operand has 16 states, 16 states have (on average 16.375) internal successors, (262), 16 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:47,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:47,415 INFO L93 Difference]: Finished difference Result 24818 states and 35400 transitions. [2023-12-20 01:04:47,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-20 01:04:47,415 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.375) internal successors, (262), 16 states have internal predecessors, (262), 0 states have call successors, (0), 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 91 [2023-12-20 01:04:47,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:47,466 INFO L225 Difference]: With dead ends: 24818 [2023-12-20 01:04:47,467 INFO L226 Difference]: Without dead ends: 22920 [2023-12-20 01:04:47,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2539 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1209, Invalid=5931, Unknown=0, NotChecked=0, Total=7140 [2023-12-20 01:04:47,476 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 4456 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4456 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:47,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4456 Valid, 1405 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 01:04:47,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22920 states. [2023-12-20 01:04:48,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22920 to 18492. [2023-12-20 01:04:48,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18492 states, 18491 states have (on average 1.429398085555135) internal successors, (26431), 18491 states have internal predecessors, (26431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:48,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18492 states to 18492 states and 26431 transitions. [2023-12-20 01:04:48,179 INFO L78 Accepts]: Start accepts. Automaton has 18492 states and 26431 transitions. Word has length 91 [2023-12-20 01:04:48,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:48,179 INFO L495 AbstractCegarLoop]: Abstraction has 18492 states and 26431 transitions. [2023-12-20 01:04:48,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.375) internal successors, (262), 16 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:48,180 INFO L276 IsEmpty]: Start isEmpty. Operand 18492 states and 26431 transitions. [2023-12-20 01:04:48,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 01:04:48,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:48,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:48,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 01:04:48,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 01:04:48,387 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:48,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:48,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1528952311, now seen corresponding path program 1 times [2023-12-20 01:04:48,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:48,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149548314] [2023-12-20 01:04:48,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:48,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:04:48,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:48,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149548314] [2023-12-20 01:04:48,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149548314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:48,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:48,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:04:48,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878786260] [2023-12-20 01:04:48,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:48,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:04:48,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:48,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:04:48,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:04:48,517 INFO L87 Difference]: Start difference. First operand 18492 states and 26431 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:49,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:49,173 INFO L93 Difference]: Finished difference Result 32806 states and 47220 transitions. [2023-12-20 01:04:49,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:04:49,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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 92 [2023-12-20 01:04:49,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:49,240 INFO L225 Difference]: With dead ends: 32806 [2023-12-20 01:04:49,240 INFO L226 Difference]: Without dead ends: 30286 [2023-12-20 01:04:49,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 01:04:49,250 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 762 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:49,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 1267 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:04:49,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30286 states. [2023-12-20 01:04:49,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30286 to 21142. [2023-12-20 01:04:49,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21142 states, 21141 states have (on average 1.428693060876969) internal successors, (30204), 21141 states have internal predecessors, (30204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21142 states to 21142 states and 30204 transitions. [2023-12-20 01:04:50,001 INFO L78 Accepts]: Start accepts. Automaton has 21142 states and 30204 transitions. Word has length 92 [2023-12-20 01:04:50,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:50,001 INFO L495 AbstractCegarLoop]: Abstraction has 21142 states and 30204 transitions. [2023-12-20 01:04:50,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:50,002 INFO L276 IsEmpty]: Start isEmpty. Operand 21142 states and 30204 transitions. [2023-12-20 01:04:50,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 01:04:50,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:50,004 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:50,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 01:04:50,004 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:50,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:50,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1783903383, now seen corresponding path program 1 times [2023-12-20 01:04:50,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:50,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930357937] [2023-12-20 01:04:50,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:50,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:50,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:50,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930357937] [2023-12-20 01:04:50,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930357937] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:50,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:50,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:50,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405944940] [2023-12-20 01:04:50,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:50,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:50,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:50,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:50,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:50,090 INFO L87 Difference]: Start difference. First operand 21142 states and 30204 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:50,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:50,433 INFO L93 Difference]: Finished difference Result 31033 states and 44166 transitions. [2023-12-20 01:04:50,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:50,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2023-12-20 01:04:50,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:50,450 INFO L225 Difference]: With dead ends: 31033 [2023-12-20 01:04:50,450 INFO L226 Difference]: Without dead ends: 9929 [2023-12-20 01:04:50,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:50,472 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 40 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:50,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 244 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:50,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9929 states. [2023-12-20 01:04:50,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9929 to 9927. [2023-12-20 01:04:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9927 states, 9926 states have (on average 1.3934112431996777) internal successors, (13831), 9926 states have internal predecessors, (13831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9927 states to 9927 states and 13831 transitions. [2023-12-20 01:04:50,787 INFO L78 Accepts]: Start accepts. Automaton has 9927 states and 13831 transitions. Word has length 93 [2023-12-20 01:04:50,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:50,787 INFO L495 AbstractCegarLoop]: Abstraction has 9927 states and 13831 transitions. [2023-12-20 01:04:50,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:50,787 INFO L276 IsEmpty]: Start isEmpty. Operand 9927 states and 13831 transitions. [2023-12-20 01:04:50,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 01:04:50,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:50,789 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:50,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 01:04:50,789 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:50,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:50,790 INFO L85 PathProgramCache]: Analyzing trace with hash -650716099, now seen corresponding path program 1 times [2023-12-20 01:04:50,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:50,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49338783] [2023-12-20 01:04:50,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:50,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:51,205 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:51,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:51,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49338783] [2023-12-20 01:04:51,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49338783] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:04:51,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185234535] [2023-12-20 01:04:51,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:51,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:51,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:04:51,209 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:04:51,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 01:04:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:51,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-20 01:04:51,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:04:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:51,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:04:52,854 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:52,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185234535] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:04:52,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:04:52,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-12-20 01:04:52,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631659502] [2023-12-20 01:04:52,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:04:52,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-20 01:04:52,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:52,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-20 01:04:52,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-12-20 01:04:52,856 INFO L87 Difference]: Start difference. First operand 9927 states and 13831 transitions. Second operand has 19 states, 19 states have (on average 11.368421052631579) internal successors, (216), 18 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:54,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:54,794 INFO L93 Difference]: Finished difference Result 56622 states and 78436 transitions. [2023-12-20 01:04:54,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-20 01:04:54,795 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.368421052631579) internal successors, (216), 18 states have internal predecessors, (216), 0 states have call successors, (0), 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 95 [2023-12-20 01:04:54,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:54,846 INFO L225 Difference]: With dead ends: 56622 [2023-12-20 01:04:54,846 INFO L226 Difference]: Without dead ends: 48217 [2023-12-20 01:04:54,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=383, Invalid=1257, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 01:04:54,864 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 2005 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:54,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2005 Valid, 1547 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 01:04:54,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48217 states. [2023-12-20 01:04:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48217 to 22704. [2023-12-20 01:04:55,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22704 states, 22703 states have (on average 1.385367572567502) internal successors, (31452), 22703 states have internal predecessors, (31452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:55,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22704 states to 22704 states and 31452 transitions. [2023-12-20 01:04:55,783 INFO L78 Accepts]: Start accepts. Automaton has 22704 states and 31452 transitions. Word has length 95 [2023-12-20 01:04:55,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:55,783 INFO L495 AbstractCegarLoop]: Abstraction has 22704 states and 31452 transitions. [2023-12-20 01:04:55,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.368421052631579) internal successors, (216), 18 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:55,783 INFO L276 IsEmpty]: Start isEmpty. Operand 22704 states and 31452 transitions. [2023-12-20 01:04:55,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 01:04:55,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:55,786 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:55,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 01:04:55,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-20 01:04:55,995 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:55,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:55,995 INFO L85 PathProgramCache]: Analyzing trace with hash -320235719, now seen corresponding path program 1 times [2023-12-20 01:04:55,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:55,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564589128] [2023-12-20 01:04:55,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:55,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:56,397 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:56,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:56,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564589128] [2023-12-20 01:04:56,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564589128] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:04:56,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571577868] [2023-12-20 01:04:56,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:56,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:56,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:04:56,401 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:04:56,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 01:04:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:56,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 01:04:56,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:04:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:57,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:04:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:57,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571577868] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:04:57,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:04:57,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-12-20 01:04:57,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167671313] [2023-12-20 01:04:57,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:04:57,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 01:04:57,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:57,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 01:04:57,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2023-12-20 01:04:57,860 INFO L87 Difference]: Start difference. First operand 22704 states and 31452 transitions. Second operand has 23 states, 23 states have (on average 10.91304347826087) internal successors, (251), 22 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:04,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:04,420 INFO L93 Difference]: Finished difference Result 213924 states and 292341 transitions. [2023-12-20 01:05:04,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-20 01:05:04,422 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.91304347826087) internal successors, (251), 22 states have internal predecessors, (251), 0 states have call successors, (0), 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 95 [2023-12-20 01:05:04,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:04,617 INFO L225 Difference]: With dead ends: 213924 [2023-12-20 01:05:04,617 INFO L226 Difference]: Without dead ends: 191944 [2023-12-20 01:05:04,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1271 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=946, Invalid=4310, Unknown=0, NotChecked=0, Total=5256 [2023-12-20 01:05:04,661 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 3737 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3737 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:04,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3737 Valid, 1544 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 01:05:04,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191944 states. [2023-12-20 01:05:09,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191944 to 138634. [2023-12-20 01:05:09,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138634 states, 138633 states have (on average 1.3561417555704631) internal successors, (188006), 138633 states have internal predecessors, (188006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:10,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138634 states to 138634 states and 188006 transitions. [2023-12-20 01:05:10,114 INFO L78 Accepts]: Start accepts. Automaton has 138634 states and 188006 transitions. Word has length 95 [2023-12-20 01:05:10,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:10,114 INFO L495 AbstractCegarLoop]: Abstraction has 138634 states and 188006 transitions. [2023-12-20 01:05:10,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.91304347826087) internal successors, (251), 22 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:10,114 INFO L276 IsEmpty]: Start isEmpty. Operand 138634 states and 188006 transitions. [2023-12-20 01:05:10,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 01:05:10,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:10,121 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:10,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 01:05:10,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:05:10,329 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:10,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:10,330 INFO L85 PathProgramCache]: Analyzing trace with hash -458823236, now seen corresponding path program 1 times [2023-12-20 01:05:10,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:10,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858987368] [2023-12-20 01:05:10,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:10,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:10,611 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:10,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:10,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858987368] [2023-12-20 01:05:10,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858987368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:10,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:10,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:10,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771732340] [2023-12-20 01:05:10,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:10,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:10,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:10,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:10,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:10,612 INFO L87 Difference]: Start difference. First operand 138634 states and 188006 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:16,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:16,343 INFO L93 Difference]: Finished difference Result 349028 states and 474708 transitions. [2023-12-20 01:05:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:16,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 01:05:16,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:16,706 INFO L225 Difference]: With dead ends: 349028 [2023-12-20 01:05:16,706 INFO L226 Difference]: Without dead ends: 211225 [2023-12-20 01:05:16,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:16,819 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 62 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:16,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 307 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:16,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211225 states. [2023-12-20 01:05:22,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211225 to 161033. [2023-12-20 01:05:22,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161033 states, 161032 states have (on average 1.3547493665855235) internal successors, (218158), 161032 states have internal predecessors, (218158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:22,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161033 states to 161033 states and 218158 transitions. [2023-12-20 01:05:22,648 INFO L78 Accepts]: Start accepts. Automaton has 161033 states and 218158 transitions. Word has length 95 [2023-12-20 01:05:22,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:22,648 INFO L495 AbstractCegarLoop]: Abstraction has 161033 states and 218158 transitions. [2023-12-20 01:05:22,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:22,648 INFO L276 IsEmpty]: Start isEmpty. Operand 161033 states and 218158 transitions. [2023-12-20 01:05:22,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 01:05:22,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:22,655 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:22,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 01:05:22,655 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:22,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:22,656 INFO L85 PathProgramCache]: Analyzing trace with hash -173084551, now seen corresponding path program 1 times [2023-12-20 01:05:22,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:22,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242745609] [2023-12-20 01:05:22,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:22,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:22,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:22,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242745609] [2023-12-20 01:05:22,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242745609] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:22,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:22,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:22,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675863902] [2023-12-20 01:05:22,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:22,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:22,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:22,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:22,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:22,734 INFO L87 Difference]: Start difference. First operand 161033 states and 218158 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:25,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:25,992 INFO L93 Difference]: Finished difference Result 251059 states and 339654 transitions. [2023-12-20 01:05:25,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:25,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 01:05:25,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:26,154 INFO L225 Difference]: With dead ends: 251059 [2023-12-20 01:05:26,154 INFO L226 Difference]: Without dead ends: 103942 [2023-12-20 01:05:26,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:26,211 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 36 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:26,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 222 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:26,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103942 states. [2023-12-20 01:05:29,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103942 to 103940. [2023-12-20 01:05:29,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103940 states, 103939 states have (on average 1.326258670951231) internal successors, (137850), 103939 states have internal predecessors, (137850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:29,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103940 states to 103940 states and 137850 transitions. [2023-12-20 01:05:29,563 INFO L78 Accepts]: Start accepts. Automaton has 103940 states and 137850 transitions. Word has length 95 [2023-12-20 01:05:29,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:29,563 INFO L495 AbstractCegarLoop]: Abstraction has 103940 states and 137850 transitions. [2023-12-20 01:05:29,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:29,564 INFO L276 IsEmpty]: Start isEmpty. Operand 103940 states and 137850 transitions. [2023-12-20 01:05:29,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 01:05:29,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:29,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:29,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 01:05:29,569 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:29,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:29,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1227213214, now seen corresponding path program 1 times [2023-12-20 01:05:29,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:29,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830186641] [2023-12-20 01:05:29,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:29,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:29,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:29,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830186641] [2023-12-20 01:05:29,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830186641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:29,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:29,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:29,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588960955] [2023-12-20 01:05:29,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:29,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:29,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:29,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:29,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:29,607 INFO L87 Difference]: Start difference. First operand 103940 states and 137850 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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) [2023-12-20 01:05:34,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:34,044 INFO L93 Difference]: Finished difference Result 280094 states and 369539 transitions. [2023-12-20 01:05:34,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:34,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 96 [2023-12-20 01:05:34,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:34,274 INFO L225 Difference]: With dead ends: 280094 [2023-12-20 01:05:34,274 INFO L226 Difference]: Without dead ends: 177059 [2023-12-20 01:05:34,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:34,431 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 61 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:34,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 321 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:34,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177059 states. [2023-12-20 01:05:39,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177059 to 164435. [2023-12-20 01:05:39,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164435 states, 164434 states have (on average 1.3068282715253536) internal successors, (214887), 164434 states have internal predecessors, (214887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:40,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164435 states to 164435 states and 214887 transitions. [2023-12-20 01:05:40,010 INFO L78 Accepts]: Start accepts. Automaton has 164435 states and 214887 transitions. Word has length 96 [2023-12-20 01:05:40,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:40,010 INFO L495 AbstractCegarLoop]: Abstraction has 164435 states and 214887 transitions. [2023-12-20 01:05:40,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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) [2023-12-20 01:05:40,011 INFO L276 IsEmpty]: Start isEmpty. Operand 164435 states and 214887 transitions. [2023-12-20 01:05:40,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 01:05:40,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:40,018 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:40,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 01:05:40,018 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:40,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:40,020 INFO L85 PathProgramCache]: Analyzing trace with hash 979165263, now seen corresponding path program 1 times [2023-12-20 01:05:40,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:40,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703265377] [2023-12-20 01:05:40,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:40,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:40,349 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:40,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:40,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703265377] [2023-12-20 01:05:40,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703265377] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:05:40,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583518854] [2023-12-20 01:05:40,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:40,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:05:40,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:05:40,352 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:05:40,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 01:05:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:40,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:05:40,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:05:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:41,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:05:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:42,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583518854] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:05:42,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:05:42,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2023-12-20 01:05:42,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606508595] [2023-12-20 01:05:42,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:05:42,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 01:05:42,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:42,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 01:05:42,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2023-12-20 01:05:42,508 INFO L87 Difference]: Start difference. First operand 164435 states and 214887 transitions. Second operand has 27 states, 27 states have (on average 10.074074074074074) internal successors, (272), 26 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:48,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:48,650 INFO L93 Difference]: Finished difference Result 388121 states and 506077 transitions. [2023-12-20 01:05:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-20 01:05:48,650 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.074074074074074) internal successors, (272), 26 states have internal predecessors, (272), 0 states have call successors, (0), 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 96 [2023-12-20 01:05:48,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:48,970 INFO L225 Difference]: With dead ends: 388121 [2023-12-20 01:05:48,970 INFO L226 Difference]: Without dead ends: 223875 [2023-12-20 01:05:49,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=446, Invalid=1446, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 01:05:49,033 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 1053 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:49,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 935 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 01:05:49,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223875 states. [2023-12-20 01:05:54,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223875 to 169676. [2023-12-20 01:05:54,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169676 states, 169675 states have (on average 1.3022955650508325) internal successors, (220967), 169675 states have internal predecessors, (220967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:54,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169676 states to 169676 states and 220967 transitions. [2023-12-20 01:05:54,873 INFO L78 Accepts]: Start accepts. Automaton has 169676 states and 220967 transitions. Word has length 96 [2023-12-20 01:05:54,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:54,874 INFO L495 AbstractCegarLoop]: Abstraction has 169676 states and 220967 transitions. [2023-12-20 01:05:54,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.074074074074074) internal successors, (272), 26 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:54,874 INFO L276 IsEmpty]: Start isEmpty. Operand 169676 states and 220967 transitions. [2023-12-20 01:05:54,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 01:05:54,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:54,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:54,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 01:05:55,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 01:05:55,082 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:55,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:55,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1987386160, now seen corresponding path program 1 times [2023-12-20 01:05:55,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:55,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484857908] [2023-12-20 01:05:55,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:55,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:55,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:55,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484857908] [2023-12-20 01:05:55,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484857908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:55,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:55,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:55,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753093336] [2023-12-20 01:05:55,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:55,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:55,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:55,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:55,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:55,124 INFO L87 Difference]: Start difference. First operand 169676 states and 220967 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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) [2023-12-20 01:05:59,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:59,490 INFO L93 Difference]: Finished difference Result 249544 states and 324197 transitions. [2023-12-20 01:05:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:59,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 96 [2023-12-20 01:05:59,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:59,704 INFO L225 Difference]: With dead ends: 249544 [2023-12-20 01:05:59,704 INFO L226 Difference]: Without dead ends: 161127 [2023-12-20 01:05:59,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:59,761 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 65 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:59,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 278 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:59,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161127 states. [2023-12-20 01:06:04,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161127 to 161125. [2023-12-20 01:06:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161125 states, 161124 states have (on average 1.2917008018668852) internal successors, (208124), 161124 states have internal predecessors, (208124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:05,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161125 states to 161125 states and 208124 transitions. [2023-12-20 01:06:05,152 INFO L78 Accepts]: Start accepts. Automaton has 161125 states and 208124 transitions. Word has length 96 [2023-12-20 01:06:05,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:05,152 INFO L495 AbstractCegarLoop]: Abstraction has 161125 states and 208124 transitions. [2023-12-20 01:06:05,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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) [2023-12-20 01:06:05,152 INFO L276 IsEmpty]: Start isEmpty. Operand 161125 states and 208124 transitions. [2023-12-20 01:06:05,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 01:06:05,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:05,159 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:06:05,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 01:06:05,160 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:05,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:05,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1882062300, now seen corresponding path program 1 times [2023-12-20 01:06:05,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:05,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564481496] [2023-12-20 01:06:05,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:05,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:05,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:05,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564481496] [2023-12-20 01:06:05,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564481496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:05,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:05,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:06:05,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348402264] [2023-12-20 01:06:05,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:05,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:06:05,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:05,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:06:05,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:05,203 INFO L87 Difference]: Start difference. First operand 161125 states and 208124 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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) [2023-12-20 01:06:10,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:10,793 INFO L93 Difference]: Finished difference Result 358007 states and 462247 transitions. [2023-12-20 01:06:10,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:06:10,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 96 [2023-12-20 01:06:10,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted.