/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:19:06,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:19:06,476 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 14:19:06,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:19:06,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:19:06,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:19:06,508 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:19:06,509 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:19:06,509 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:19:06,513 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:19:06,513 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:19:06,513 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:19:06,514 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:19:06,515 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:19:06,515 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:19:06,515 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:19:06,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:19:06,516 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:19:06,516 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:19:06,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:19:06,517 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:19:06,517 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:19:06,517 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:19:06,518 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:19:06,518 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:19:06,518 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:19:06,518 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:19:06,518 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:19:06,519 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:19:06,519 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:19:06,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:19:06,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:19:06,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:19:06,520 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:19:06,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:19:06,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:19:06,521 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:19:06,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:19:06,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:19:06,521 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:19:06,521 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:19:06,522 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:19:06,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:19:06,522 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:19:06,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:19:06,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:19:06,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:19:06,785 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:19:06,786 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:19:06,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-20 14:19:08,055 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:19:08,493 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:19:08,495 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-20 14:19:08,523 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281bafc33/31db07ff616a4fc9ac26cc657266012a/FLAGdcdbff9e1 [2023-12-20 14:19:08,538 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281bafc33/31db07ff616a4fc9ac26cc657266012a [2023-12-20 14:19:08,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:19:08,542 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:19:08,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:19:08,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:19:08,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:19:08,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:19:08" (1/1) ... [2023-12-20 14:19:08,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5350e33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:19:08, skipping insertion in model container [2023-12-20 14:19:08,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:19:08" (1/1) ... [2023-12-20 14:19:08,662 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:19:08,999 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c[15510,15523] [2023-12-20 14:19:09,042 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c[21065,21078] [2023-12-20 14:19:09,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:19:09,752 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:19:09,798 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c[15510,15523] [2023-12-20 14:19:09,805 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c[21065,21078] [2023-12-20 14:19:10,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:19:10,225 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:19:10,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:19:10 WrapperNode [2023-12-20 14:19:10,225 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:19:10,226 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:19:10,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:19:10,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:19:10,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:19:10" (1/1) ... [2023-12-20 14:19:10,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:19:10" (1/1) ... [2023-12-20 14:19:10,552 INFO L138 Inliner]: procedures = 38, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5151 [2023-12-20 14:19:10,553 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:19:10,554 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:19:10,554 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:19:10,554 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:19:10,572 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:19:10" (1/1) ... [2023-12-20 14:19:10,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:19:10" (1/1) ... [2023-12-20 14:19:10,630 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:19:10" (1/1) ... [2023-12-20 14:19:10,821 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 14:19:10,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:19:10" (1/1) ... [2023-12-20 14:19:10,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:19:10" (1/1) ... [2023-12-20 14:19:10,959 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:19:10" (1/1) ... [2023-12-20 14:19:10,977 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:19:10" (1/1) ... [2023-12-20 14:19:11,006 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:19:10" (1/1) ... [2023-12-20 14:19:11,020 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:19:10" (1/1) ... [2023-12-20 14:19:11,085 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:19:11,086 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:19:11,086 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:19:11,086 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:19:11,087 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:19:10" (1/1) ... [2023-12-20 14:19:11,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:19:11,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:19:11,118 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 14:19:11,138 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 14:19:11,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:19:11,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:19:11,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:19:11,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:19:11,268 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:19:11,269 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:19:14,880 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:19:14,949 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:19:14,949 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 14:19:14,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:19:14 BoogieIcfgContainer [2023-12-20 14:19:14,950 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:19:14,952 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:19:14,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:19:14,956 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:19:14,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:19:08" (1/3) ... [2023-12-20 14:19:14,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eca0ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:19:14, skipping insertion in model container [2023-12-20 14:19:14,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:19:10" (2/3) ... [2023-12-20 14:19:14,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eca0ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:19:14, skipping insertion in model container [2023-12-20 14:19:14,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:19:14" (3/3) ... [2023-12-20 14:19:14,959 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-20 14:19:14,975 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:19:14,976 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:19:15,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:19:15,054 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;@3255c4e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:19:15,055 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:19:15,065 INFO L276 IsEmpty]: Start isEmpty. Operand has 851 states, 848 states have (on average 1.9728773584905661) internal successors, (1673), 850 states have internal predecessors, (1673), 0 states have call successors, (0), 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 14:19:15,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-20 14:19:15,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:15,077 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] [2023-12-20 14:19:15,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:15,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:15,083 INFO L85 PathProgramCache]: Analyzing trace with hash -150308239, now seen corresponding path program 1 times [2023-12-20 14:19:15,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:15,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214711547] [2023-12-20 14:19:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:15,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:15,279 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 14:19:15,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:15,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214711547] [2023-12-20 14:19:15,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214711547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:15,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:15,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 14:19:15,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153321713] [2023-12-20 14:19:15,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:15,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 14:19:15,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:15,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 14:19:15,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 14:19:15,323 INFO L87 Difference]: Start difference. First operand has 851 states, 848 states have (on average 1.9728773584905661) internal successors, (1673), 850 states have internal predecessors, (1673), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:15,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:15,428 INFO L93 Difference]: Finished difference Result 1657 states and 3259 transitions. [2023-12-20 14:19:15,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 14:19:15,430 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-20 14:19:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:15,446 INFO L225 Difference]: With dead ends: 1657 [2023-12-20 14:19:15,446 INFO L226 Difference]: Without dead ends: 847 [2023-12-20 14:19:15,451 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 14:19:15,454 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:15,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1601 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:19:15,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-20 14:19:15,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2023-12-20 14:19:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 845 states have (on average 1.8958579881656805) internal successors, (1602), 846 states have internal predecessors, (1602), 0 states have call successors, (0), 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 14:19:15,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1602 transitions. [2023-12-20 14:19:15,549 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1602 transitions. Word has length 23 [2023-12-20 14:19:15,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:15,550 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1602 transitions. [2023-12-20 14:19:15,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:15,550 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1602 transitions. [2023-12-20 14:19:15,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-20 14:19:15,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:15,552 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] [2023-12-20 14:19:15,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:19:15,552 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:15,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:15,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1839251981, now seen corresponding path program 1 times [2023-12-20 14:19:15,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:15,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730195250] [2023-12-20 14:19:15,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:15,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:15,960 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 14:19:15,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:15,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730195250] [2023-12-20 14:19:15,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730195250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:15,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:15,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:19:15,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606658441] [2023-12-20 14:19:15,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:15,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:19:15,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:15,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:19:15,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:19:15,968 INFO L87 Difference]: Start difference. First operand 847 states and 1602 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:16,058 INFO L93 Difference]: Finished difference Result 899 states and 1684 transitions. [2023-12-20 14:19:16,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:19:16,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-20 14:19:16,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:16,065 INFO L225 Difference]: With dead ends: 899 [2023-12-20 14:19:16,065 INFO L226 Difference]: Without dead ends: 847 [2023-12-20 14:19:16,066 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 14:19:16,066 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 0 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4753 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:16,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4753 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:19:16,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-20 14:19:16,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2023-12-20 14:19:16,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 845 states have (on average 1.8485207100591716) internal successors, (1562), 846 states have internal predecessors, (1562), 0 states have call successors, (0), 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 14:19:16,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1562 transitions. [2023-12-20 14:19:16,091 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1562 transitions. Word has length 23 [2023-12-20 14:19:16,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:16,092 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1562 transitions. [2023-12-20 14:19:16,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:16,092 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1562 transitions. [2023-12-20 14:19:16,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-20 14:19:16,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:16,093 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] [2023-12-20 14:19:16,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:19:16,094 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:16,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:16,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1370291631, now seen corresponding path program 1 times [2023-12-20 14:19:16,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:16,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326436479] [2023-12-20 14:19:16,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:16,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:16,190 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 14:19:16,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:16,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326436479] [2023-12-20 14:19:16,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326436479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:16,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:16,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 14:19:16,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487401365] [2023-12-20 14:19:16,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:16,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:19:16,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:16,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:19:16,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:19:16,200 INFO L87 Difference]: Start difference. First operand 847 states and 1562 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:19,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:19,351 INFO L93 Difference]: Finished difference Result 2351 states and 4435 transitions. [2023-12-20 14:19:19,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:19:19,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-20 14:19:19,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:19,358 INFO L225 Difference]: With dead ends: 2351 [2023-12-20 14:19:19,358 INFO L226 Difference]: Without dead ends: 1598 [2023-12-20 14:19:19,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:19:19,360 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 894 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:19,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 548 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 14:19:19,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2023-12-20 14:19:19,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1598. [2023-12-20 14:19:19,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1596 states have (on average 1.6221804511278195) internal successors, (2589), 1597 states have internal predecessors, (2589), 0 states have call successors, (0), 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 14:19:19,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2589 transitions. [2023-12-20 14:19:19,434 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2589 transitions. Word has length 47 [2023-12-20 14:19:19,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:19,435 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 2589 transitions. [2023-12-20 14:19:19,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:19,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2589 transitions. [2023-12-20 14:19:19,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 14:19:19,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:19,437 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 14:19:19,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:19:19,437 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:19,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:19,438 INFO L85 PathProgramCache]: Analyzing trace with hash -138572409, now seen corresponding path program 1 times [2023-12-20 14:19:19,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:19,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678354817] [2023-12-20 14:19:19,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:19,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:19,576 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 14:19:19,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:19,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678354817] [2023-12-20 14:19:19,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678354817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:19,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:19,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:19:19,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399386097] [2023-12-20 14:19:19,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:19,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:19:19,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:19,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:19:19,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:19:19,578 INFO L87 Difference]: Start difference. First operand 1598 states and 2589 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 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 14:19:19,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:19,859 INFO L93 Difference]: Finished difference Result 2186 states and 3537 transitions. [2023-12-20 14:19:19,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 14:19:19,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 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 14:19:19,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:19,867 INFO L225 Difference]: With dead ends: 2186 [2023-12-20 14:19:19,867 INFO L226 Difference]: Without dead ends: 2137 [2023-12-20 14:19:19,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:19:19,869 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 9829 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9829 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:19,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9829 Valid, 3039 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:19:19,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2023-12-20 14:19:19,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 1645. [2023-12-20 14:19:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1643 states have (on average 1.6220328667072428) internal successors, (2665), 1644 states have internal predecessors, (2665), 0 states have call successors, (0), 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 14:19:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2665 transitions. [2023-12-20 14:19:19,901 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2665 transitions. Word has length 62 [2023-12-20 14:19:19,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:19,901 INFO L495 AbstractCegarLoop]: Abstraction has 1645 states and 2665 transitions. [2023-12-20 14:19:19,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 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 14:19:19,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2665 transitions. [2023-12-20 14:19:19,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 14:19:19,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:19,903 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 14:19:19,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:19:19,904 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:19,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:19,904 INFO L85 PathProgramCache]: Analyzing trace with hash -157852617, now seen corresponding path program 1 times [2023-12-20 14:19:19,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:19,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972913806] [2023-12-20 14:19:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:19,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:19,976 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 14:19:19,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:19,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972913806] [2023-12-20 14:19:19,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972913806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:19,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:19,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:19:19,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119018424] [2023-12-20 14:19:19,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:19,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:19:19,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:19,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:19:19,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:19:19,978 INFO L87 Difference]: Start difference. First operand 1645 states and 2665 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 14:19:20,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:20,018 INFO L93 Difference]: Finished difference Result 1826 states and 2956 transitions. [2023-12-20 14:19:20,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:19:20,018 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 14:19:20,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:20,024 INFO L225 Difference]: With dead ends: 1826 [2023-12-20 14:19:20,024 INFO L226 Difference]: Without dead ends: 1730 [2023-12-20 14:19:20,025 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 14:19:20,026 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1490 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:20,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1626 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:19:20,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2023-12-20 14:19:20,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1726. [2023-12-20 14:19:20,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.6200696055684454) internal successors, (2793), 1725 states have internal predecessors, (2793), 0 states have call successors, (0), 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 14:19:20,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2793 transitions. [2023-12-20 14:19:20,058 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2793 transitions. Word has length 64 [2023-12-20 14:19:20,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:20,058 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2793 transitions. [2023-12-20 14:19:20,058 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 14:19:20,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2793 transitions. [2023-12-20 14:19:20,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 14:19:20,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:20,060 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 14:19:20,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:19:20,060 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:20,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:20,061 INFO L85 PathProgramCache]: Analyzing trace with hash -155707665, now seen corresponding path program 1 times [2023-12-20 14:19:20,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:20,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643791540] [2023-12-20 14:19:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:20,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:20,349 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 14:19:20,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:20,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643791540] [2023-12-20 14:19:20,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643791540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:20,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:20,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:19:20,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7699419] [2023-12-20 14:19:20,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:20,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:19:20,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:20,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:19:20,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:19:20,352 INFO L87 Difference]: Start difference. First operand 1726 states and 2793 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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 14:19:20,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:20,601 INFO L93 Difference]: Finished difference Result 1905 states and 3077 transitions. [2023-12-20 14:19:20,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:19:20,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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 14:19:20,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:20,608 INFO L225 Difference]: With dead ends: 1905 [2023-12-20 14:19:20,608 INFO L226 Difference]: Without dead ends: 1728 [2023-12-20 14:19:20,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:19:20,609 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 8998 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8998 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:20,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8998 Valid, 1924 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:19:20,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2023-12-20 14:19:20,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1726. [2023-12-20 14:19:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.618909512761021) internal successors, (2791), 1725 states have internal predecessors, (2791), 0 states have call successors, (0), 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 14:19:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2791 transitions. [2023-12-20 14:19:20,650 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2791 transitions. Word has length 64 [2023-12-20 14:19:20,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:20,651 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2791 transitions. [2023-12-20 14:19:20,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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 14:19:20,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2791 transitions. [2023-12-20 14:19:20,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 14:19:20,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:20,652 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 14:19:20,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:19:20,652 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:20,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:20,653 INFO L85 PathProgramCache]: Analyzing trace with hash -660670881, now seen corresponding path program 1 times [2023-12-20 14:19:20,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:20,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421953722] [2023-12-20 14:19:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:20,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:20,843 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 14:19:20,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:20,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421953722] [2023-12-20 14:19:20,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421953722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:20,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:20,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:19:20,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822198941] [2023-12-20 14:19:20,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:20,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:19:20,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:20,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:19:20,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:19:20,845 INFO L87 Difference]: Start difference. First operand 1726 states and 2791 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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 14:19:20,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:20,885 INFO L93 Difference]: Finished difference Result 1734 states and 2800 transitions. [2023-12-20 14:19:20,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:19:20,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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 14:19:20,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:20,892 INFO L225 Difference]: With dead ends: 1734 [2023-12-20 14:19:20,893 INFO L226 Difference]: Without dead ends: 1732 [2023-12-20 14:19:20,893 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 14:19:20,894 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 1 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4666 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:20,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4666 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:19:20,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2023-12-20 14:19:20,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1730. [2023-12-20 14:19:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1728 states have (on average 1.6168981481481481) internal successors, (2794), 1729 states have internal predecessors, (2794), 0 states have call successors, (0), 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 14:19:20,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2794 transitions. [2023-12-20 14:19:20,926 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2794 transitions. Word has length 65 [2023-12-20 14:19:20,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:20,927 INFO L495 AbstractCegarLoop]: Abstraction has 1730 states and 2794 transitions. [2023-12-20 14:19:20,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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 14:19:20,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2794 transitions. [2023-12-20 14:19:20,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:19:20,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:20,928 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, 1] [2023-12-20 14:19:20,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:19:20,928 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:20,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:20,929 INFO L85 PathProgramCache]: Analyzing trace with hash -347651057, now seen corresponding path program 1 times [2023-12-20 14:19:20,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:20,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429213569] [2023-12-20 14:19:20,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:20,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:20,973 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 14:19:20,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:20,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429213569] [2023-12-20 14:19:20,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429213569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:20,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:20,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:19:20,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853312270] [2023-12-20 14:19:20,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:20,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:19:20,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:20,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:19:20,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:19:20,976 INFO L87 Difference]: Start difference. First operand 1730 states and 2794 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:21,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:21,033 INFO L93 Difference]: Finished difference Result 2076 states and 3334 transitions. [2023-12-20 14:19:21,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:19:21,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 14:19:21,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:21,040 INFO L225 Difference]: With dead ends: 2076 [2023-12-20 14:19:21,040 INFO L226 Difference]: Without dead ends: 1895 [2023-12-20 14:19:21,041 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 14:19:21,042 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1503 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1691 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 14:19:21,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1691 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:19:21,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2023-12-20 14:19:21,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1893. [2023-12-20 14:19:21,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1891 states have (on average 1.6102591221575886) internal successors, (3045), 1892 states have internal predecessors, (3045), 0 states have call successors, (0), 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 14:19:21,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 3045 transitions. [2023-12-20 14:19:21,084 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 3045 transitions. Word has length 66 [2023-12-20 14:19:21,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:21,084 INFO L495 AbstractCegarLoop]: Abstraction has 1893 states and 3045 transitions. [2023-12-20 14:19:21,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:21,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 3045 transitions. [2023-12-20 14:19:21,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:19:21,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:21,085 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, 1] [2023-12-20 14:19:21,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 14:19:21,085 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:21,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:21,086 INFO L85 PathProgramCache]: Analyzing trace with hash -307707121, now seen corresponding path program 1 times [2023-12-20 14:19:21,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:21,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105432326] [2023-12-20 14:19:21,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:21,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:21,139 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 14:19:21,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:21,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105432326] [2023-12-20 14:19:21,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105432326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:21,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:21,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:19:21,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230555756] [2023-12-20 14:19:21,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:21,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:19:21,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:21,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:19:21,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:19:21,141 INFO L87 Difference]: Start difference. First operand 1893 states and 3045 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:21,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:21,184 INFO L93 Difference]: Finished difference Result 2549 states and 4059 transitions. [2023-12-20 14:19:21,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:19:21,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 14:19:21,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:21,194 INFO L225 Difference]: With dead ends: 2549 [2023-12-20 14:19:21,194 INFO L226 Difference]: Without dead ends: 2205 [2023-12-20 14:19:21,197 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 14:19:21,198 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1501 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1693 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 14:19:21,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 1693 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:19:21,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2023-12-20 14:19:21,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2203. [2023-12-20 14:19:21,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2201 states have (on average 1.5970013630168105) internal successors, (3515), 2202 states have internal predecessors, (3515), 0 states have call successors, (0), 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 14:19:21,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 3515 transitions. [2023-12-20 14:19:21,252 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 3515 transitions. Word has length 66 [2023-12-20 14:19:21,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:21,253 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 3515 transitions. [2023-12-20 14:19:21,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:21,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 3515 transitions. [2023-12-20 14:19:21,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:19:21,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:21,254 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, 1] [2023-12-20 14:19:21,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:19:21,254 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:21,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:21,258 INFO L85 PathProgramCache]: Analyzing trace with hash -933363185, now seen corresponding path program 1 times [2023-12-20 14:19:21,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:21,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313895726] [2023-12-20 14:19:21,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:21,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:21,310 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 14:19:21,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:21,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313895726] [2023-12-20 14:19:21,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313895726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:21,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:21,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:19:21,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459711131] [2023-12-20 14:19:21,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:21,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:19:21,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:21,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:19:21,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:19:21,315 INFO L87 Difference]: Start difference. First operand 2203 states and 3515 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:21,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:21,369 INFO L93 Difference]: Finished difference Result 3447 states and 5413 transitions. [2023-12-20 14:19:21,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:19:21,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 14:19:21,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:21,379 INFO L225 Difference]: With dead ends: 3447 [2023-12-20 14:19:21,380 INFO L226 Difference]: Without dead ends: 2793 [2023-12-20 14:19:21,381 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 14:19:21,382 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 1499 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1695 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 14:19:21,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1695 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:19:21,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2023-12-20 14:19:21,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 2791. [2023-12-20 14:19:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2789 states have (on average 1.5743994263176766) internal successors, (4391), 2790 states have internal predecessors, (4391), 0 states have call successors, (0), 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 14:19:21,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 4391 transitions. [2023-12-20 14:19:21,453 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 4391 transitions. Word has length 66 [2023-12-20 14:19:21,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:21,453 INFO L495 AbstractCegarLoop]: Abstraction has 2791 states and 4391 transitions. [2023-12-20 14:19:21,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:21,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 4391 transitions. [2023-12-20 14:19:21,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:19:21,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:21,458 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, 1] [2023-12-20 14:19:21,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:19:21,458 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:21,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:21,459 INFO L85 PathProgramCache]: Analyzing trace with hash -44629745, now seen corresponding path program 1 times [2023-12-20 14:19:21,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:21,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551181762] [2023-12-20 14:19:21,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:21,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:21,513 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 14:19:21,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:21,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551181762] [2023-12-20 14:19:21,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551181762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:21,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:21,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:19:21,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105854379] [2023-12-20 14:19:21,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:21,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:19:21,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:21,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:19:21,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:19:21,515 INFO L87 Difference]: Start difference. First operand 2791 states and 4391 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:21,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:21,580 INFO L93 Difference]: Finished difference Result 5147 states and 7929 transitions. [2023-12-20 14:19:21,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:19:21,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 14:19:21,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:21,608 INFO L225 Difference]: With dead ends: 5147 [2023-12-20 14:19:21,609 INFO L226 Difference]: Without dead ends: 3905 [2023-12-20 14:19:21,611 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 14:19:21,612 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1497 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1697 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 14:19:21,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1697 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:19:21,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3905 states. [2023-12-20 14:19:21,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3905 to 3903. [2023-12-20 14:19:21,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 3901 states have (on average 1.5419123301717508) internal successors, (6015), 3902 states have internal predecessors, (6015), 0 states have call successors, (0), 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 14:19:21,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 6015 transitions. [2023-12-20 14:19:21,707 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 6015 transitions. Word has length 66 [2023-12-20 14:19:21,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:21,707 INFO L495 AbstractCegarLoop]: Abstraction has 3903 states and 6015 transitions. [2023-12-20 14:19:21,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:21,707 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 6015 transitions. [2023-12-20 14:19:21,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:19:21,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:21,708 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, 1] [2023-12-20 14:19:21,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 14:19:21,708 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:21,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:21,709 INFO L85 PathProgramCache]: Analyzing trace with hash -79067889, now seen corresponding path program 1 times [2023-12-20 14:19:21,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:21,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807633463] [2023-12-20 14:19:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:21,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:21,749 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 14:19:21,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:21,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807633463] [2023-12-20 14:19:21,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807633463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:21,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:21,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:19:21,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982280028] [2023-12-20 14:19:21,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:21,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:19:21,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:21,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:19:21,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:19:21,751 INFO L87 Difference]: Start difference. First operand 3903 states and 6015 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:21,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:21,855 INFO L93 Difference]: Finished difference Result 8355 states and 12577 transitions. [2023-12-20 14:19:21,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:19:21,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 14:19:21,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:21,886 INFO L225 Difference]: With dead ends: 8355 [2023-12-20 14:19:21,886 INFO L226 Difference]: Without dead ends: 6001 [2023-12-20 14:19:21,891 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 14:19:21,891 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 1505 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1697 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 14:19:21,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1697 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:19:21,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2023-12-20 14:19:22,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 5999. [2023-12-20 14:19:22,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5999 states, 5997 states have (on average 1.5019176254794064) internal successors, (9007), 5998 states have internal predecessors, (9007), 0 states have call successors, (0), 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 14:19:22,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5999 states to 5999 states and 9007 transitions. [2023-12-20 14:19:22,072 INFO L78 Accepts]: Start accepts. Automaton has 5999 states and 9007 transitions. Word has length 66 [2023-12-20 14:19:22,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:22,073 INFO L495 AbstractCegarLoop]: Abstraction has 5999 states and 9007 transitions. [2023-12-20 14:19:22,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:22,073 INFO L276 IsEmpty]: Start isEmpty. Operand 5999 states and 9007 transitions. [2023-12-20 14:19:22,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 14:19:22,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:22,074 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, 1, 1, 1] [2023-12-20 14:19:22,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:19:22,074 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:22,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:22,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1522612916, now seen corresponding path program 1 times [2023-12-20 14:19:22,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:22,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255875809] [2023-12-20 14:19:22,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:22,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:22,135 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 14:19:22,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:22,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255875809] [2023-12-20 14:19:22,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255875809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:22,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:22,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:19:22,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176984652] [2023-12-20 14:19:22,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:22,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:19:22,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:22,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:19:22,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:19:22,138 INFO L87 Difference]: Start difference. First operand 5999 states and 9007 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 14:19:22,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:22,276 INFO L93 Difference]: Finished difference Result 10614 states and 15861 transitions. [2023-12-20 14:19:22,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:19:22,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-12-20 14:19:22,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:22,291 INFO L225 Difference]: With dead ends: 10614 [2023-12-20 14:19:22,291 INFO L226 Difference]: Without dead ends: 8115 [2023-12-20 14:19:22,296 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 14:19:22,296 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 1504 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1698 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 14:19:22,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:19:22,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8115 states. [2023-12-20 14:19:22,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8115 to 8113. [2023-12-20 14:19:22,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8113 states, 8111 states have (on average 1.485513500184934) internal successors, (12049), 8112 states have internal predecessors, (12049), 0 states have call successors, (0), 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 14:19:22,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8113 states to 8113 states and 12049 transitions. [2023-12-20 14:19:22,557 INFO L78 Accepts]: Start accepts. Automaton has 8113 states and 12049 transitions. Word has length 68 [2023-12-20 14:19:22,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:22,558 INFO L495 AbstractCegarLoop]: Abstraction has 8113 states and 12049 transitions. [2023-12-20 14:19:22,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 14:19:22,558 INFO L276 IsEmpty]: Start isEmpty. Operand 8113 states and 12049 transitions. [2023-12-20 14:19:22,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:19:22,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:22,560 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 14:19:22,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:19:22,561 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:22,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:22,561 INFO L85 PathProgramCache]: Analyzing trace with hash 443992391, now seen corresponding path program 1 times [2023-12-20 14:19:22,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:22,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775324535] [2023-12-20 14:19:22,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:22,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 14:19:22,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:22,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775324535] [2023-12-20 14:19:22,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775324535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:22,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:22,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:19:22,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681529879] [2023-12-20 14:19:22,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:22,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:19:22,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:22,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:19:22,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:19:22,711 INFO L87 Difference]: Start difference. First operand 8113 states and 12049 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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 14:19:23,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:23,605 INFO L93 Difference]: Finished difference Result 48831 states and 71160 transitions. [2023-12-20 14:19:23,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:19:23,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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 86 [2023-12-20 14:19:23,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:23,677 INFO L225 Difference]: With dead ends: 48831 [2023-12-20 14:19:23,677 INFO L226 Difference]: Without dead ends: 42269 [2023-12-20 14:19:23,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:19:23,695 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 8086 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8086 SdHoareTripleChecker+Valid, 3866 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:23,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8086 Valid, 3866 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:19:23,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42269 states. [2023-12-20 14:19:24,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42269 to 14673. [2023-12-20 14:19:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14673 states, 14671 states have (on average 1.4647263308567924) internal successors, (21489), 14672 states have internal predecessors, (21489), 0 states have call successors, (0), 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 14:19:24,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14673 states to 14673 states and 21489 transitions. [2023-12-20 14:19:24,271 INFO L78 Accepts]: Start accepts. Automaton has 14673 states and 21489 transitions. Word has length 86 [2023-12-20 14:19:24,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:24,271 INFO L495 AbstractCegarLoop]: Abstraction has 14673 states and 21489 transitions. [2023-12-20 14:19:24,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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 14:19:24,272 INFO L276 IsEmpty]: Start isEmpty. Operand 14673 states and 21489 transitions. [2023-12-20 14:19:24,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:19:24,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:24,275 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 14:19:24,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:19:24,275 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:24,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:24,321 INFO L85 PathProgramCache]: Analyzing trace with hash 483936327, now seen corresponding path program 1 times [2023-12-20 14:19:24,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:24,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663646725] [2023-12-20 14:19:24,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:24,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 14:19:24,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:24,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663646725] [2023-12-20 14:19:24,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663646725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:24,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:24,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:19:24,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755739921] [2023-12-20 14:19:24,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:24,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:19:24,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:24,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:19:24,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:19:24,479 INFO L87 Difference]: Start difference. First operand 14673 states and 21489 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 14:19:25,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:25,592 INFO L93 Difference]: Finished difference Result 55391 states and 80600 transitions. [2023-12-20 14:19:25,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:19:25,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 86 [2023-12-20 14:19:25,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:25,688 INFO L225 Difference]: With dead ends: 55391 [2023-12-20 14:19:25,688 INFO L226 Difference]: Without dead ends: 48829 [2023-12-20 14:19:25,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:19:25,708 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 8138 mSDsluCounter, 2135 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8138 SdHoareTripleChecker+Valid, 3766 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:25,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8138 Valid, 3766 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:19:25,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48829 states. [2023-12-20 14:19:26,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48829 to 24529. [2023-12-20 14:19:26,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24529 states, 24527 states have (on average 1.4501977412647287) internal successors, (35569), 24528 states have internal predecessors, (35569), 0 states have call successors, (0), 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 14:19:26,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24529 states to 24529 states and 35569 transitions. [2023-12-20 14:19:26,479 INFO L78 Accepts]: Start accepts. Automaton has 24529 states and 35569 transitions. Word has length 86 [2023-12-20 14:19:26,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:26,479 INFO L495 AbstractCegarLoop]: Abstraction has 24529 states and 35569 transitions. [2023-12-20 14:19:26,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 14:19:26,479 INFO L276 IsEmpty]: Start isEmpty. Operand 24529 states and 35569 transitions. [2023-12-20 14:19:26,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:19:26,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:26,482 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 14:19:26,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:19:26,482 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:26,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:26,483 INFO L85 PathProgramCache]: Analyzing trace with hash -141719737, now seen corresponding path program 1 times [2023-12-20 14:19:26,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:26,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467069462] [2023-12-20 14:19:26,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:26,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 14:19:26,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:26,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467069462] [2023-12-20 14:19:26,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467069462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:26,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:26,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:19:26,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051229987] [2023-12-20 14:19:26,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:26,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:19:26,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:26,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:19:26,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:19:26,668 INFO L87 Difference]: Start difference. First operand 24529 states and 35569 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 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 14:19:27,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:27,652 INFO L93 Difference]: Finished difference Result 61951 states and 90040 transitions. [2023-12-20 14:19:27,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:19:27,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 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 86 [2023-12-20 14:19:27,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:27,753 INFO L225 Difference]: With dead ends: 61951 [2023-12-20 14:19:27,753 INFO L226 Difference]: Without dead ends: 55389 [2023-12-20 14:19:27,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:19:27,777 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 8187 mSDsluCounter, 2140 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8187 SdHoareTripleChecker+Valid, 3768 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:27,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8187 Valid, 3768 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:19:27,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55389 states. [2023-12-20 14:19:28,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55389 to 31089. [2023-12-20 14:19:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31089 states, 31087 states have (on average 1.4478399330910026) internal successors, (45009), 31088 states have internal predecessors, (45009), 0 states have call successors, (0), 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 14:19:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31089 states to 31089 states and 45009 transitions. [2023-12-20 14:19:28,666 INFO L78 Accepts]: Start accepts. Automaton has 31089 states and 45009 transitions. Word has length 86 [2023-12-20 14:19:28,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:28,667 INFO L495 AbstractCegarLoop]: Abstraction has 31089 states and 45009 transitions. [2023-12-20 14:19:28,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 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 14:19:28,667 INFO L276 IsEmpty]: Start isEmpty. Operand 31089 states and 45009 transitions. [2023-12-20 14:19:28,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:19:28,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:28,671 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 14:19:28,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:19:28,671 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:28,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:28,671 INFO L85 PathProgramCache]: Analyzing trace with hash 747013703, now seen corresponding path program 1 times [2023-12-20 14:19:28,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:28,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488008627] [2023-12-20 14:19:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:28,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 14:19:28,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:28,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488008627] [2023-12-20 14:19:28,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488008627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:28,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:28,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:19:28,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558773793] [2023-12-20 14:19:28,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:28,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:19:28,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:28,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:19:28,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:19:28,863 INFO L87 Difference]: Start difference. First operand 31089 states and 45009 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:30,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:30,471 INFO L93 Difference]: Finished difference Result 68511 states and 99480 transitions. [2023-12-20 14:19:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:19:30,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:19:30,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:30,563 INFO L225 Difference]: With dead ends: 68511 [2023-12-20 14:19:30,564 INFO L226 Difference]: Without dead ends: 61949 [2023-12-20 14:19:30,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:19:30,583 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 8090 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8090 SdHoareTripleChecker+Valid, 3876 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:30,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8090 Valid, 3876 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:19:30,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61949 states. [2023-12-20 14:19:31,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61949 to 37649. [2023-12-20 14:19:31,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37649 states, 37647 states have (on average 1.4463038223497224) internal successors, (54449), 37648 states have internal predecessors, (54449), 0 states have call successors, (0), 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 14:19:31,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37649 states to 37649 states and 54449 transitions. [2023-12-20 14:19:31,526 INFO L78 Accepts]: Start accepts. Automaton has 37649 states and 54449 transitions. Word has length 86 [2023-12-20 14:19:31,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:31,526 INFO L495 AbstractCegarLoop]: Abstraction has 37649 states and 54449 transitions. [2023-12-20 14:19:31,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:31,526 INFO L276 IsEmpty]: Start isEmpty. Operand 37649 states and 54449 transitions. [2023-12-20 14:19:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:19:31,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:31,529 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 14:19:31,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:19:31,529 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:31,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:31,530 INFO L85 PathProgramCache]: Analyzing trace with hash 712575559, now seen corresponding path program 1 times [2023-12-20 14:19:31,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:31,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151296540] [2023-12-20 14:19:31,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:31,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:19:31,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151296540] [2023-12-20 14:19:31,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151296540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:31,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:31,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:19:31,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407529885] [2023-12-20 14:19:31,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:31,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:19:31,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:31,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:19:31,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:19:31,688 INFO L87 Difference]: Start difference. First operand 37649 states and 54449 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:33,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:33,053 INFO L93 Difference]: Finished difference Result 75071 states and 108920 transitions. [2023-12-20 14:19:33,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:19:33,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:19:33,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:33,132 INFO L225 Difference]: With dead ends: 75071 [2023-12-20 14:19:33,133 INFO L226 Difference]: Without dead ends: 68509 [2023-12-20 14:19:33,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:19:33,157 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 8030 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8030 SdHoareTripleChecker+Valid, 4006 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:33,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8030 Valid, 4006 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:19:33,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68509 states. [2023-12-20 14:19:34,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68509 to 44209. [2023-12-20 14:19:34,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44209 states, 44207 states have (on average 1.4452236071210443) internal successors, (63889), 44208 states have internal predecessors, (63889), 0 states have call successors, (0), 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 14:19:34,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44209 states to 44209 states and 63889 transitions. [2023-12-20 14:19:34,769 INFO L78 Accepts]: Start accepts. Automaton has 44209 states and 63889 transitions. Word has length 86 [2023-12-20 14:19:34,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:34,770 INFO L495 AbstractCegarLoop]: Abstraction has 44209 states and 63889 transitions. [2023-12-20 14:19:34,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:34,770 INFO L276 IsEmpty]: Start isEmpty. Operand 44209 states and 63889 transitions. [2023-12-20 14:19:34,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 14:19:34,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:34,774 INFO L195 NwaCegarLoop]: trace histogram [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 14:19:34,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:19:34,774 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:34,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:34,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1343316655, now seen corresponding path program 1 times [2023-12-20 14:19:34,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:34,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084413402] [2023-12-20 14:19:34,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:34,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:34,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:34,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084413402] [2023-12-20 14:19:34,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084413402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:34,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:34,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:19:34,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517714554] [2023-12-20 14:19:34,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:34,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:19:34,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:34,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:19:34,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:19:34,861 INFO L87 Difference]: Start difference. First operand 44209 states and 63889 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 14:19:35,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:35,481 INFO L93 Difference]: Finished difference Result 74186 states and 107593 transitions. [2023-12-20 14:19:35,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:19:35,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-20 14:19:35,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:35,515 INFO L225 Difference]: With dead ends: 74186 [2023-12-20 14:19:35,515 INFO L226 Difference]: Without dead ends: 31528 [2023-12-20 14:19:35,545 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 14:19:35,545 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 58 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3152 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 14:19:35,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3152 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:19:35,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31528 states. [2023-12-20 14:19:36,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31528 to 31526. [2023-12-20 14:19:36,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31526 states, 31524 states have (on average 1.452797868290826) internal successors, (45798), 31525 states have internal predecessors, (45798), 0 states have call successors, (0), 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 14:19:36,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31526 states to 31526 states and 45798 transitions. [2023-12-20 14:19:36,553 INFO L78 Accepts]: Start accepts. Automaton has 31526 states and 45798 transitions. Word has length 88 [2023-12-20 14:19:36,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:36,554 INFO L495 AbstractCegarLoop]: Abstraction has 31526 states and 45798 transitions. [2023-12-20 14:19:36,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 14:19:36,554 INFO L276 IsEmpty]: Start isEmpty. Operand 31526 states and 45798 transitions. [2023-12-20 14:19:36,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 14:19:36,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:36,556 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 14:19:36,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:19:36,556 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:36,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:36,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2082755052, now seen corresponding path program 1 times [2023-12-20 14:19:36,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:36,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267880549] [2023-12-20 14:19:36,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:36,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:36,694 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:19:36,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:36,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267880549] [2023-12-20 14:19:36,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267880549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:36,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:36,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:19:36,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277914434] [2023-12-20 14:19:36,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:36,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:19:36,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:36,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:19:36,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:19:36,696 INFO L87 Difference]: Start difference. First operand 31526 states and 45798 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 14:19:38,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:38,027 INFO L93 Difference]: Finished difference Result 59188 states and 86125 transitions. [2023-12-20 14:19:38,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:19:38,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 88 [2023-12-20 14:19:38,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:38,086 INFO L225 Difference]: With dead ends: 59188 [2023-12-20 14:19:38,086 INFO L226 Difference]: Without dead ends: 54578 [2023-12-20 14:19:38,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:19:38,100 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 8040 mSDsluCounter, 2324 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8040 SdHoareTripleChecker+Valid, 3949 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:38,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8040 Valid, 3949 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:19:38,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54578 states. [2023-12-20 14:19:39,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54578 to 36134. [2023-12-20 14:19:39,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36134 states, 36132 states have (on average 1.4517325362559503) internal successors, (52454), 36133 states have internal predecessors, (52454), 0 states have call successors, (0), 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 14:19:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36134 states to 36134 states and 52454 transitions. [2023-12-20 14:19:39,161 INFO L78 Accepts]: Start accepts. Automaton has 36134 states and 52454 transitions. Word has length 88 [2023-12-20 14:19:39,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:39,161 INFO L495 AbstractCegarLoop]: Abstraction has 36134 states and 52454 transitions. [2023-12-20 14:19:39,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 14:19:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand 36134 states and 52454 transitions. [2023-12-20 14:19:39,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-20 14:19:39,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:39,164 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] [2023-12-20 14:19:39,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:19:39,164 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:39,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:39,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1555080975, now seen corresponding path program 1 times [2023-12-20 14:19:39,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:39,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819287391] [2023-12-20 14:19:39,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:39,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:39,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:39,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:39,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819287391] [2023-12-20 14:19:39,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819287391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:39,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:39,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:19:39,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755277140] [2023-12-20 14:19:39,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:39,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:19:39,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:39,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:19:39,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:19:39,243 INFO L87 Difference]: Start difference. First operand 36134 states and 52454 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 14:19:39,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:39,721 INFO L93 Difference]: Finished difference Result 53418 states and 77416 transitions. [2023-12-20 14:19:39,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:19:39,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-20 14:19:39,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:39,738 INFO L225 Difference]: With dead ends: 53418 [2023-12-20 14:19:39,738 INFO L226 Difference]: Without dead ends: 18856 [2023-12-20 14:19:39,759 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 14:19:39,759 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 53 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3137 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 14:19:39,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:19:39,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18856 states. [2023-12-20 14:19:40,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18856 to 18854. [2023-12-20 14:19:40,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18854 states, 18852 states have (on average 1.4456821557394441) internal successors, (27254), 18853 states have internal predecessors, (27254), 0 states have call successors, (0), 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 14:19:40,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18854 states to 18854 states and 27254 transitions. [2023-12-20 14:19:40,262 INFO L78 Accepts]: Start accepts. Automaton has 18854 states and 27254 transitions. Word has length 89 [2023-12-20 14:19:40,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:40,262 INFO L495 AbstractCegarLoop]: Abstraction has 18854 states and 27254 transitions. [2023-12-20 14:19:40,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 14:19:40,263 INFO L276 IsEmpty]: Start isEmpty. Operand 18854 states and 27254 transitions. [2023-12-20 14:19:40,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 14:19:40,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:40,265 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2023-12-20 14:19:40,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:19:40,265 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:40,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:40,265 INFO L85 PathProgramCache]: Analyzing trace with hash 433774111, now seen corresponding path program 1 times [2023-12-20 14:19:40,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:40,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456196098] [2023-12-20 14:19:40,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:40,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:40,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:40,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456196098] [2023-12-20 14:19:40,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456196098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:40,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:40,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:19:40,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901164096] [2023-12-20 14:19:40,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:40,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:19:40,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:40,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:19:40,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:19:40,352 INFO L87 Difference]: Start difference. First operand 18854 states and 27254 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 14:19:40,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:40,794 INFO L93 Difference]: Finished difference Result 27498 states and 39616 transitions. [2023-12-20 14:19:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:19:40,796 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 14:19:40,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:40,807 INFO L225 Difference]: With dead ends: 27498 [2023-12-20 14:19:40,807 INFO L226 Difference]: Without dead ends: 10216 [2023-12-20 14:19:40,817 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 14:19:40,819 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 50 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3122 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 14:19:40,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3122 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:19:40,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10216 states. [2023-12-20 14:19:41,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10216 to 10214. [2023-12-20 14:19:41,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10214 states, 10212 states have (on average 1.4467293380336859) internal successors, (14774), 10213 states have internal predecessors, (14774), 0 states have call successors, (0), 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 14:19:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10214 states to 10214 states and 14774 transitions. [2023-12-20 14:19:41,157 INFO L78 Accepts]: Start accepts. Automaton has 10214 states and 14774 transitions. Word has length 91 [2023-12-20 14:19:41,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:41,158 INFO L495 AbstractCegarLoop]: Abstraction has 10214 states and 14774 transitions. [2023-12-20 14:19:41,158 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 14:19:41,158 INFO L276 IsEmpty]: Start isEmpty. Operand 10214 states and 14774 transitions. [2023-12-20 14:19:41,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 14:19:41,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:41,159 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-12-20 14:19:41,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:19:41,160 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:41,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:41,160 INFO L85 PathProgramCache]: Analyzing trace with hash 475149517, now seen corresponding path program 1 times [2023-12-20 14:19:41,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:41,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309977086] [2023-12-20 14:19:41,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:41,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:41,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:41,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309977086] [2023-12-20 14:19:41,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309977086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:41,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:41,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:19:41,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284798801] [2023-12-20 14:19:41,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:41,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:19:41,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:41,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:19:41,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:19:41,238 INFO L87 Difference]: Start difference. First operand 10214 states and 14774 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 14:19:41,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:41,379 INFO L93 Difference]: Finished difference Result 14538 states and 20896 transitions. [2023-12-20 14:19:41,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:19:41,379 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 14:19:41,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:41,385 INFO L225 Difference]: With dead ends: 14538 [2023-12-20 14:19:41,385 INFO L226 Difference]: Without dead ends: 5896 [2023-12-20 14:19:41,389 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 14:19:41,390 INFO L413 NwaCegarLoop]: 1586 mSDtfsCounter, 47 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3107 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 14:19:41,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3107 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:19:41,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5896 states. [2023-12-20 14:19:41,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5896 to 5894. [2023-12-20 14:19:41,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5894 states, 5892 states have (on average 1.4585879158180584) internal successors, (8594), 5893 states have internal predecessors, (8594), 0 states have call successors, (0), 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 14:19:41,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5894 states to 5894 states and 8594 transitions. [2023-12-20 14:19:41,548 INFO L78 Accepts]: Start accepts. Automaton has 5894 states and 8594 transitions. Word has length 93 [2023-12-20 14:19:41,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:41,548 INFO L495 AbstractCegarLoop]: Abstraction has 5894 states and 8594 transitions. [2023-12-20 14:19:41,548 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 14:19:41,548 INFO L276 IsEmpty]: Start isEmpty. Operand 5894 states and 8594 transitions. [2023-12-20 14:19:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 14:19:41,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:41,549 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, 1, 1, 1, 1] [2023-12-20 14:19:41,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:19:41,549 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:41,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:41,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1948500741, now seen corresponding path program 1 times [2023-12-20 14:19:41,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:41,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411255933] [2023-12-20 14:19:41,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:41,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:41,633 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:41,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:41,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411255933] [2023-12-20 14:19:41,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411255933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:41,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:41,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:19:41,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926095958] [2023-12-20 14:19:41,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:41,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:19:41,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:41,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:19:41,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:19:41,635 INFO L87 Difference]: Start difference. First operand 5894 states and 8594 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 14:19:41,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:41,717 INFO L93 Difference]: Finished difference Result 8058 states and 11626 transitions. [2023-12-20 14:19:41,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:19:41,718 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 14:19:41,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:41,722 INFO L225 Difference]: With dead ends: 8058 [2023-12-20 14:19:41,722 INFO L226 Difference]: Without dead ends: 3736 [2023-12-20 14:19:41,724 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 14:19:41,725 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 44 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3092 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 14:19:41,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3092 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:19:41,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2023-12-20 14:19:41,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3734. [2023-12-20 14:19:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 3732 states have (on average 1.4828510182207932) internal successors, (5534), 3733 states have internal predecessors, (5534), 0 states have call successors, (0), 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 14:19:41,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 5534 transitions. [2023-12-20 14:19:41,798 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 5534 transitions. Word has length 95 [2023-12-20 14:19:41,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:41,798 INFO L495 AbstractCegarLoop]: Abstraction has 3734 states and 5534 transitions. [2023-12-20 14:19:41,799 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 14:19:41,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 5534 transitions. [2023-12-20 14:19:41,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 14:19:41,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:41,800 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, 1, 1] [2023-12-20 14:19:41,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:19:41,800 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:41,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:41,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1337448105, now seen corresponding path program 1 times [2023-12-20 14:19:41,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:41,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44252075] [2023-12-20 14:19:41,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:41,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:41,880 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:41,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:41,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44252075] [2023-12-20 14:19:41,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44252075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:19:41,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:19:41,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:19:41,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624257909] [2023-12-20 14:19:41,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:19:41,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:19:41,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:41,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:19:41,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:19:41,882 INFO L87 Difference]: Start difference. First operand 3734 states and 5534 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 14:19:41,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:41,934 INFO L93 Difference]: Finished difference Result 4818 states and 7036 transitions. [2023-12-20 14:19:41,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:19:41,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-20 14:19:41,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:41,937 INFO L225 Difference]: With dead ends: 4818 [2023-12-20 14:19:41,937 INFO L226 Difference]: Without dead ends: 2656 [2023-12-20 14:19:41,938 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 14:19:41,939 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 41 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3077 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 14:19:41,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3077 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:19:41,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2023-12-20 14:19:41,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2654. [2023-12-20 14:19:41,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2654 states, 2652 states have (on average 1.5154600301659125) internal successors, (4019), 2653 states have internal predecessors, (4019), 0 states have call successors, (0), 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 14:19:41,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 4019 transitions. [2023-12-20 14:19:41,990 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 4019 transitions. Word has length 97 [2023-12-20 14:19:41,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:41,991 INFO L495 AbstractCegarLoop]: Abstraction has 2654 states and 4019 transitions. [2023-12-20 14:19:41,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 14:19:41,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 4019 transitions. [2023-12-20 14:19:41,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 14:19:41,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:41,992 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-12-20 14:19:41,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:19:41,992 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:41,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:41,993 INFO L85 PathProgramCache]: Analyzing trace with hash 54256087, now seen corresponding path program 1 times [2023-12-20 14:19:41,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:41,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498845161] [2023-12-20 14:19:41,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:41,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:42,935 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:42,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:42,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498845161] [2023-12-20 14:19:42,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498845161] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:19:42,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566478638] [2023-12-20 14:19:42,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:42,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:19:42,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:19:42,944 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 14:19:42,947 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 14:19:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:43,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 14:19:43,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:19:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:19:43,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:19:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:19:43,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566478638] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:19:43,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:19:43,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-12-20 14:19:43,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066317843] [2023-12-20 14:19:43,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:19:43,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-20 14:19:43,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:43,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-20 14:19:43,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:19:43,480 INFO L87 Difference]: Start difference. First operand 2654 states and 4019 transitions. Second operand has 17 states, 17 states have (on average 16.647058823529413) internal successors, (283), 17 states have internal predecessors, (283), 0 states have call successors, (0), 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 14:19:46,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:46,258 INFO L93 Difference]: Finished difference Result 11485 states and 15961 transitions. [2023-12-20 14:19:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-20 14:19:46,259 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 16.647058823529413) internal successors, (283), 17 states have internal predecessors, (283), 0 states have call successors, (0), 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 99 [2023-12-20 14:19:46,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:46,268 INFO L225 Difference]: With dead ends: 11485 [2023-12-20 14:19:46,268 INFO L226 Difference]: Without dead ends: 10403 [2023-12-20 14:19:46,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=720, Invalid=3062, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 14:19:46,270 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 17407 mSDsluCounter, 4949 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17407 SdHoareTripleChecker+Valid, 6476 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:46,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17407 Valid, 6476 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:19:46,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10403 states. [2023-12-20 14:19:46,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10403 to 10059. [2023-12-20 14:19:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10059 states, 10057 states have (on average 1.361837526101223) internal successors, (13696), 10058 states have internal predecessors, (13696), 0 states have call successors, (0), 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 14:19:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10059 states to 10059 states and 13696 transitions. [2023-12-20 14:19:46,477 INFO L78 Accepts]: Start accepts. Automaton has 10059 states and 13696 transitions. Word has length 99 [2023-12-20 14:19:46,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:46,477 INFO L495 AbstractCegarLoop]: Abstraction has 10059 states and 13696 transitions. [2023-12-20 14:19:46,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.647058823529413) internal successors, (283), 17 states have internal predecessors, (283), 0 states have call successors, (0), 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 14:19:46,477 INFO L276 IsEmpty]: Start isEmpty. Operand 10059 states and 13696 transitions. [2023-12-20 14:19:46,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:19:46,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:46,478 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, 1, 1, 1, 1, 1] [2023-12-20 14:19:46,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 14:19:46,682 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,SelfDestructingSolverStorable25 [2023-12-20 14:19:46,683 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:46,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:46,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1164591634, now seen corresponding path program 1 times [2023-12-20 14:19:46,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:46,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76926443] [2023-12-20 14:19:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:46,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:47,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:47,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76926443] [2023-12-20 14:19:47,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76926443] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:19:47,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444424423] [2023-12-20 14:19:47,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:47,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:19:47,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:19:47,072 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 14:19:47,094 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 14:19:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:47,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:19:47,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:19:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:47,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:19:48,956 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:48,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444424423] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:19:48,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:19:48,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-12-20 14:19:48,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551698880] [2023-12-20 14:19:48,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:19:48,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 14:19:48,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:48,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 14:19:48,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-12-20 14:19:48,958 INFO L87 Difference]: Start difference. First operand 10059 states and 13696 transitions. Second operand has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 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 14:19:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:50,124 INFO L93 Difference]: Finished difference Result 25057 states and 33132 transitions. [2023-12-20 14:19:50,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 14:19:50,125 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 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 100 [2023-12-20 14:19:50,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:50,141 INFO L225 Difference]: With dead ends: 25057 [2023-12-20 14:19:50,141 INFO L226 Difference]: Without dead ends: 16890 [2023-12-20 14:19:50,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=329, Invalid=1231, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 14:19:50,149 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 9328 mSDsluCounter, 6688 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9328 SdHoareTripleChecker+Valid, 8213 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:50,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9328 Valid, 8213 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:19:50,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16890 states. [2023-12-20 14:19:50,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16890 to 16374. [2023-12-20 14:19:50,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16374 states, 16372 states have (on average 1.3309308575616907) internal successors, (21790), 16373 states have internal predecessors, (21790), 0 states have call successors, (0), 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 14:19:50,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16374 states to 16374 states and 21790 transitions. [2023-12-20 14:19:50,606 INFO L78 Accepts]: Start accepts. Automaton has 16374 states and 21790 transitions. Word has length 100 [2023-12-20 14:19:50,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:50,606 INFO L495 AbstractCegarLoop]: Abstraction has 16374 states and 21790 transitions. [2023-12-20 14:19:50,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 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 14:19:50,606 INFO L276 IsEmpty]: Start isEmpty. Operand 16374 states and 21790 transitions. [2023-12-20 14:19:50,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:19:50,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:50,607 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, 1, 1, 1, 1, 1] [2023-12-20 14:19:50,614 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 14:19:50,808 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,SelfDestructingSolverStorable26 [2023-12-20 14:19:50,808 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:50,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:50,809 INFO L85 PathProgramCache]: Analyzing trace with hash -531612434, now seen corresponding path program 1 times [2023-12-20 14:19:50,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:50,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785295187] [2023-12-20 14:19:50,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:50,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:51,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:51,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785295187] [2023-12-20 14:19:51,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785295187] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:19:51,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017794759] [2023-12-20 14:19:51,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:51,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:19:51,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:19:51,652 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 14:19:51,654 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 14:19:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:51,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 14:19:51,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:19:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:52,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:19:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:53,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017794759] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:19:53,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:19:53,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2023-12-20 14:19:53,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874720834] [2023-12-20 14:19:53,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:19:53,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 14:19:53,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:53,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 14:19:53,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2023-12-20 14:19:53,056 INFO L87 Difference]: Start difference. First operand 16374 states and 21790 transitions. Second operand has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 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 14:19:53,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:53,966 INFO L93 Difference]: Finished difference Result 29519 states and 38732 transitions. [2023-12-20 14:19:53,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:19:53,966 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 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 100 [2023-12-20 14:19:53,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:53,983 INFO L225 Difference]: With dead ends: 29519 [2023-12-20 14:19:53,983 INFO L226 Difference]: Without dead ends: 17410 [2023-12-20 14:19:53,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=1042, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 14:19:53,993 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 13971 mSDsluCounter, 7866 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13971 SdHoareTripleChecker+Valid, 9391 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:53,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13971 Valid, 9391 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:19:54,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17410 states. [2023-12-20 14:19:54,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17410 to 15342. [2023-12-20 14:19:54,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15342 states, 15340 states have (on average 1.3128422425032595) internal successors, (20139), 15341 states have internal predecessors, (20139), 0 states have call successors, (0), 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 14:19:54,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15342 states to 15342 states and 20139 transitions. [2023-12-20 14:19:54,512 INFO L78 Accepts]: Start accepts. Automaton has 15342 states and 20139 transitions. Word has length 100 [2023-12-20 14:19:54,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:54,513 INFO L495 AbstractCegarLoop]: Abstraction has 15342 states and 20139 transitions. [2023-12-20 14:19:54,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 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 14:19:54,513 INFO L276 IsEmpty]: Start isEmpty. Operand 15342 states and 20139 transitions. [2023-12-20 14:19:54,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:19:54,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:54,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:19:54,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 14:19:54,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:19:54,715 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:54,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:54,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1054216644, now seen corresponding path program 1 times [2023-12-20 14:19:54,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:54,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545426915] [2023-12-20 14:19:54,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:54,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:55,079 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:55,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:55,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545426915] [2023-12-20 14:19:55,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545426915] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:19:55,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228789366] [2023-12-20 14:19:55,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:55,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:19:55,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:19:55,081 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 14:19:55,100 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 14:19:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:55,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:19:55,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:19:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:55,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:19:56,588 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:56,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228789366] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:19:56,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:19:56,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 14:19:56,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166932339] [2023-12-20 14:19:56,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:19:56,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 14:19:56,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:56,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 14:19:56,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2023-12-20 14:19:56,591 INFO L87 Difference]: Start difference. First operand 15342 states and 20139 transitions. Second operand has 28 states, 28 states have (on average 8.821428571428571) internal successors, (247), 28 states have internal predecessors, (247), 0 states have call successors, (0), 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 14:19:58,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:58,036 INFO L93 Difference]: Finished difference Result 44266 states and 57097 transitions. [2023-12-20 14:19:58,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 14:19:58,036 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.821428571428571) internal successors, (247), 28 states have internal predecessors, (247), 0 states have call successors, (0), 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 100 [2023-12-20 14:19:58,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:58,066 INFO L225 Difference]: With dead ends: 44266 [2023-12-20 14:19:58,066 INFO L226 Difference]: Without dead ends: 30856 [2023-12-20 14:19:58,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=428, Invalid=1378, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 14:19:58,078 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 18196 mSDsluCounter, 6647 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18196 SdHoareTripleChecker+Valid, 8198 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:58,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18196 Valid, 8198 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:19:58,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30856 states. [2023-12-20 14:19:58,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30856 to 29476. [2023-12-20 14:19:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29476 states, 29474 states have (on average 1.2849969464612878) internal successors, (37874), 29475 states have internal predecessors, (37874), 0 states have call successors, (0), 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 14:19:59,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29476 states to 29476 states and 37874 transitions. [2023-12-20 14:19:59,039 INFO L78 Accepts]: Start accepts. Automaton has 29476 states and 37874 transitions. Word has length 100 [2023-12-20 14:19:59,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:59,039 INFO L495 AbstractCegarLoop]: Abstraction has 29476 states and 37874 transitions. [2023-12-20 14:19:59,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.821428571428571) internal successors, (247), 28 states have internal predecessors, (247), 0 states have call successors, (0), 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 14:19:59,039 INFO L276 IsEmpty]: Start isEmpty. Operand 29476 states and 37874 transitions. [2023-12-20 14:19:59,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 14:19:59,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:59,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:19:59,048 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 14:19:59,241 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,SelfDestructingSolverStorable28 [2023-12-20 14:19:59,242 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:59,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:59,242 INFO L85 PathProgramCache]: Analyzing trace with hash -410646267, now seen corresponding path program 1 times [2023-12-20 14:19:59,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:59,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836784717] [2023-12-20 14:19:59,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:59,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:59,562 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:59,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:59,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836784717] [2023-12-20 14:19:59,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836784717] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:19:59,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938833771] [2023-12-20 14:19:59,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:59,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:19:59,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:19:59,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:19:59,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 14:19:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:59,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:19:59,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:20:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:20:00,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:20:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:20:00,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938833771] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:20:00,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:20:00,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 14:20:00,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398435970] [2023-12-20 14:20:00,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:20:00,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 14:20:00,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:20:00,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 14:20:00,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2023-12-20 14:20:00,970 INFO L87 Difference]: Start difference. First operand 29476 states and 37874 transitions. Second operand has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 28 states have internal predecessors, (258), 0 states have call successors, (0), 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 14:20:03,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:20:03,161 INFO L93 Difference]: Finished difference Result 87744 states and 111662 transitions. [2023-12-20 14:20:03,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 14:20:03,162 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 28 states have internal predecessors, (258), 0 states have call successors, (0), 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 101 [2023-12-20 14:20:03,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:20:03,338 INFO L225 Difference]: With dead ends: 87744 [2023-12-20 14:20:03,339 INFO L226 Difference]: Without dead ends: 60696 [2023-12-20 14:20:03,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=411, Invalid=1395, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 14:20:03,352 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 12378 mSDsluCounter, 6815 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12378 SdHoareTripleChecker+Valid, 8361 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:20:03,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12378 Valid, 8361 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:20:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60696 states. [2023-12-20 14:20:05,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60696 to 57980. [2023-12-20 14:20:05,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57980 states, 57978 states have (on average 1.2643243989099313) internal successors, (73303), 57979 states have internal predecessors, (73303), 0 states have call successors, (0), 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 14:20:05,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57980 states to 57980 states and 73303 transitions. [2023-12-20 14:20:05,461 INFO L78 Accepts]: Start accepts. Automaton has 57980 states and 73303 transitions. Word has length 101 [2023-12-20 14:20:05,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:20:05,461 INFO L495 AbstractCegarLoop]: Abstraction has 57980 states and 73303 transitions. [2023-12-20 14:20:05,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 28 states have internal predecessors, (258), 0 states have call successors, (0), 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 14:20:05,462 INFO L276 IsEmpty]: Start isEmpty. Operand 57980 states and 73303 transitions. [2023-12-20 14:20:05,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 14:20:05,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:20:05,463 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:20:05,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 14:20:05,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:20:05,664 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:20:05,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:20:05,664 INFO L85 PathProgramCache]: Analyzing trace with hash -761997076, now seen corresponding path program 1 times [2023-12-20 14:20:05,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:20:05,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917110775] [2023-12-20 14:20:05,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:20:05,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:20:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:20:06,090 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:20:06,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:20:06,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917110775] [2023-12-20 14:20:06,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917110775] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:20:06,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249178058] [2023-12-20 14:20:06,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:20:06,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:20:06,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:20:06,092 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:20:06,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 14:20:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:20:06,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 14:20:06,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:20:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:20:07,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:20:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:20:07,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249178058] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:20:07,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:20:07,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-12-20 14:20:07,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331867262] [2023-12-20 14:20:07,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:20:07,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 14:20:07,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:20:07,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 14:20:07,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2023-12-20 14:20:07,932 INFO L87 Difference]: Start difference. First operand 57980 states and 73303 transitions. Second operand has 30 states, 30 states have (on average 9.766666666666667) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 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 14:20:14,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:20:14,959 INFO L93 Difference]: Finished difference Result 175188 states and 217905 transitions. [2023-12-20 14:20:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 14:20:14,960 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.766666666666667) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 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 102 [2023-12-20 14:20:14,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:20:15,175 INFO L225 Difference]: With dead ends: 175188 [2023-12-20 14:20:15,175 INFO L226 Difference]: Without dead ends: 125566 [2023-12-20 14:20:15,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1143, Invalid=4709, Unknown=0, NotChecked=0, Total=5852 [2023-12-20 14:20:15,209 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 17226 mSDsluCounter, 12729 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17226 SdHoareTripleChecker+Valid, 14265 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:20:15,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17226 Valid, 14265 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:20:15,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125566 states. [2023-12-20 14:20:19,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125566 to 107870. [2023-12-20 14:20:19,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107870 states, 107868 states have (on average 1.2449475284607112) internal successors, (134290), 107869 states have internal predecessors, (134290), 0 states have call successors, (0), 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 14:20:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107870 states to 107870 states and 134290 transitions. [2023-12-20 14:20:19,479 INFO L78 Accepts]: Start accepts. Automaton has 107870 states and 134290 transitions. Word has length 102 [2023-12-20 14:20:19,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:20:19,479 INFO L495 AbstractCegarLoop]: Abstraction has 107870 states and 134290 transitions. [2023-12-20 14:20:19,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.766666666666667) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 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 14:20:19,480 INFO L276 IsEmpty]: Start isEmpty. Operand 107870 states and 134290 transitions. [2023-12-20 14:20:19,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 14:20:19,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:20:19,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:20:19,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 14:20:19,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:20:19,683 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:20:19,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:20:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1937262771, now seen corresponding path program 1 times [2023-12-20 14:20:19,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:20:19,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836510466] [2023-12-20 14:20:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:20:19,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:20:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:20:20,209 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:20:20,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:20:20,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836510466] [2023-12-20 14:20:20,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836510466] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:20:20,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091933056] [2023-12-20 14:20:20,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:20:20,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:20:20,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:20:20,210 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:20:20,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 14:20:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:20:20,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:20:20,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:20:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:20:20,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:20:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:20:21,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091933056] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:20:21,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:20:21,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-20 14:20:21,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965709781] [2023-12-20 14:20:21,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:20:21,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 14:20:21,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:20:21,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 14:20:21,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-12-20 14:20:21,934 INFO L87 Difference]: Start difference. First operand 107870 states and 134290 transitions. Second operand has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 29 states have internal predecessors, (271), 0 states have call successors, (0), 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 14:20:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:20:29,484 INFO L93 Difference]: Finished difference Result 320364 states and 397624 transitions. [2023-12-20 14:20:29,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 14:20:29,484 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 29 states have internal predecessors, (271), 0 states have call successors, (0), 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 103 [2023-12-20 14:20:29,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:20:29,892 INFO L225 Difference]: With dead ends: 320364 [2023-12-20 14:20:29,892 INFO L226 Difference]: Without dead ends: 226272 [2023-12-20 14:20:29,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=480, Invalid=1412, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 14:20:29,949 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 16685 mSDsluCounter, 7949 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16685 SdHoareTripleChecker+Valid, 9489 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:20:29,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16685 Valid, 9489 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:20:30,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226272 states. [2023-12-20 14:20:37,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226272 to 215012. [2023-12-20 14:20:38,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215012 states, 215010 states have (on average 1.2314683037998233) internal successors, (264778), 215011 states have internal predecessors, (264778), 0 states have call successors, (0), 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 14:20:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215012 states to 215012 states and 264778 transitions. [2023-12-20 14:20:38,704 INFO L78 Accepts]: Start accepts. Automaton has 215012 states and 264778 transitions. Word has length 103 [2023-12-20 14:20:38,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:20:38,704 INFO L495 AbstractCegarLoop]: Abstraction has 215012 states and 264778 transitions. [2023-12-20 14:20:38,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 29 states have internal predecessors, (271), 0 states have call successors, (0), 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 14:20:38,704 INFO L276 IsEmpty]: Start isEmpty. Operand 215012 states and 264778 transitions. [2023-12-20 14:20:38,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 14:20:38,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:20:38,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:20:38,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 14:20:38,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:20:38,909 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:20:38,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:20:38,909 INFO L85 PathProgramCache]: Analyzing trace with hash -840007196, now seen corresponding path program 1 times [2023-12-20 14:20:38,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:20:38,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696789034] [2023-12-20 14:20:38,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:20:38,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:20:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:20:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:20:40,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:20:40,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696789034] [2023-12-20 14:20:40,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696789034] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:20:40,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941841329] [2023-12-20 14:20:40,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:20:40,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:20:40,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:20:40,025 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:20:40,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 14:20:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:20:40,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:20:40,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:20:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:20:41,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:20:42,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:20:42,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941841329] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:20:42,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:20:42,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 15] total 38 [2023-12-20 14:20:42,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415506068] [2023-12-20 14:20:42,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:20:42,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-20 14:20:42,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:20:42,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-20 14:20:42,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2023-12-20 14:20:42,315 INFO L87 Difference]: Start difference. First operand 215012 states and 264778 transitions. Second operand has 38 states, 38 states have (on average 7.605263157894737) internal successors, (289), 38 states have internal predecessors, (289), 0 states have call successors, (0), 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 14:20:55,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:20:55,809 INFO L93 Difference]: Finished difference Result 333382 states and 408435 transitions. [2023-12-20 14:20:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-20 14:20:55,809 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 7.605263157894737) internal successors, (289), 38 states have internal predecessors, (289), 0 states have call successors, (0), 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 104 [2023-12-20 14:20:55,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:20:56,231 INFO L225 Difference]: With dead ends: 333382 [2023-12-20 14:20:56,232 INFO L226 Difference]: Without dead ends: 242762 [2023-12-20 14:20:56,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2794 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1980, Invalid=8120, Unknown=0, NotChecked=0, Total=10100 [2023-12-20 14:20:56,292 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 12268 mSDsluCounter, 25140 mSDsCounter, 0 mSdLazyCounter, 2197 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12268 SdHoareTripleChecker+Valid, 26703 SdHoareTripleChecker+Invalid, 2274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:20:56,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12268 Valid, 26703 Invalid, 2274 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2197 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 14:20:56,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242762 states. [2023-12-20 14:21:04,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242762 to 182050. [2023-12-20 14:21:04,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182050 states, 182048 states have (on average 1.229060467568993) internal successors, (223748), 182049 states have internal predecessors, (223748), 0 states have call successors, (0), 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 14:21:04,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182050 states to 182050 states and 223748 transitions. [2023-12-20 14:21:04,592 INFO L78 Accepts]: Start accepts. Automaton has 182050 states and 223748 transitions. Word has length 104 [2023-12-20 14:21:04,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:21:04,592 INFO L495 AbstractCegarLoop]: Abstraction has 182050 states and 223748 transitions. [2023-12-20 14:21:04,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 7.605263157894737) internal successors, (289), 38 states have internal predecessors, (289), 0 states have call successors, (0), 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 14:21:04,592 INFO L276 IsEmpty]: Start isEmpty. Operand 182050 states and 223748 transitions. [2023-12-20 14:21:04,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 14:21:04,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:21:04,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:21:04,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 14:21:04,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-20 14:21:04,796 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:21:04,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:21:04,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1686899484, now seen corresponding path program 1 times [2023-12-20 14:21:04,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:21:04,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111033227] [2023-12-20 14:21:04,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:21:04,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:21:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:21:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:21:05,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:21:05,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111033227] [2023-12-20 14:21:05,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111033227] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:21:05,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304913304] [2023-12-20 14:21:05,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:21:05,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:21:05,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:21:05,808 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:21:05,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 14:21:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:21:05,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-20 14:21:05,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:21:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:21:14,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:21:27,435 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:21:27,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304913304] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:21:27,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:21:27,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 32, 42] total 83 [2023-12-20 14:21:27,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397244565] [2023-12-20 14:21:27,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:21:27,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-12-20 14:21:27,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:21:27,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-12-20 14:21:27,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=5941, Unknown=0, NotChecked=0, Total=6806 [2023-12-20 14:21:27,439 INFO L87 Difference]: Start difference. First operand 182050 states and 223748 transitions. Second operand has 83 states, 83 states have (on average 3.4216867469879517) internal successors, (284), 83 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)