/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:33:26,640 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:33:26,679 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 01:33:26,683 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:33:26,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:33:26,697 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:33:26,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:33:26,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:33:26,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:33:26,699 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:33:26,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:33:26,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:33:26,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:33:26,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:33:26,700 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:33:26,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:33:26,701 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:33:26,701 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:33:26,701 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:33:26,701 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:33:26,702 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:33:26,702 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:33:26,702 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:33:26,703 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:33:26,703 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:33:26,703 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:33:26,703 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:33:26,704 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:33:26,704 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:33:26,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:33:26,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:33:26,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:33:26,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:33:26,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:33:26,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:33:26,706 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:33:26,706 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:33:26,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:33:26,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:33:26,707 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:33:26,707 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:33:26,707 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:33:26,708 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:33:26,708 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:33:26,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:33:26,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:33:26,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:33:26,920 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:33:26,920 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:33:26,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2023-12-20 01:33:27,944 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:33:28,165 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:33:28,166 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2023-12-20 01:33:28,184 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a66629029/7b077873a81d4b2a8840f2c8ed09d738/FLAG840f0cccb [2023-12-20 01:33:28,202 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a66629029/7b077873a81d4b2a8840f2c8ed09d738 [2023-12-20 01:33:28,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:33:28,204 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:33:28,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:33:28,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:33:28,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:33:28,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:33:28" (1/1) ... [2023-12-20 01:33:28,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3085c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:28, skipping insertion in model container [2023-12-20 01:33:28,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:33:28" (1/1) ... [2023-12-20 01:33:28,257 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:33:28,558 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c[65601,65614] [2023-12-20 01:33:28,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:33:28,575 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:33:28,691 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c[65601,65614] [2023-12-20 01:33:28,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:33:28,704 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:33:28,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:28 WrapperNode [2023-12-20 01:33:28,705 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:33:28,707 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:33:28,707 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:33:28,707 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:33:28,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:28" (1/1) ... [2023-12-20 01:33:28,727 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:28" (1/1) ... [2023-12-20 01:33:28,803 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2102 [2023-12-20 01:33:28,804 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:33:28,805 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:33:28,805 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:33:28,805 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:33:28,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:28" (1/1) ... [2023-12-20 01:33:28,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:28" (1/1) ... [2023-12-20 01:33:28,822 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:28" (1/1) ... [2023-12-20 01:33:28,847 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 01:33:28,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:28" (1/1) ... [2023-12-20 01:33:28,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:28" (1/1) ... [2023-12-20 01:33:28,897 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:28" (1/1) ... [2023-12-20 01:33:28,924 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:28" (1/1) ... [2023-12-20 01:33:28,929 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:28" (1/1) ... [2023-12-20 01:33:28,935 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:28" (1/1) ... [2023-12-20 01:33:28,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:33:28,943 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:33:28,943 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:33:28,943 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:33:28,944 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:28" (1/1) ... [2023-12-20 01:33:28,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:33:28,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:33:28,970 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 01:33:28,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:33:28,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:33:28,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:33:28,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:33:28,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 01:33:29,109 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:33:29,111 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:33:30,225 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:33:30,289 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:33:30,290 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:33:30,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:33:30 BoogieIcfgContainer [2023-12-20 01:33:30,290 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:33:30,293 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:33:30,293 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:33:30,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:33:30,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:33:28" (1/3) ... [2023-12-20 01:33:30,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eeb8ad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:33:30, skipping insertion in model container [2023-12-20 01:33:30,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:33:28" (2/3) ... [2023-12-20 01:33:30,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eeb8ad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:33:30, skipping insertion in model container [2023-12-20 01:33:30,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:33:30" (3/3) ... [2023-12-20 01:33:30,298 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2023-12-20 01:33:30,311 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:33:30,311 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:33:30,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:33:30,375 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;@2d3d23bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:33:30,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:33:30,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 691 states, 689 states have (on average 1.876632801161103) internal successors, (1293), 690 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:30,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-20 01:33:30,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:30,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:30,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:30,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:30,415 INFO L85 PathProgramCache]: Analyzing trace with hash 213064800, now seen corresponding path program 1 times [2023-12-20 01:33:30,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:30,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829719411] [2023-12-20 01:33:30,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:30,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:30,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:30,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829719411] [2023-12-20 01:33:30,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829719411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:30,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:30,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 01:33:30,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943258495] [2023-12-20 01:33:30,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:30,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 01:33:30,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:30,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 01:33:30,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:33:30,902 INFO L87 Difference]: Start difference. First operand has 691 states, 689 states have (on average 1.876632801161103) internal successors, (1293), 690 states have internal predecessors, (1293), 0 states have call successors, (0), 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 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:30,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:30,947 INFO L93 Difference]: Finished difference Result 832 states and 1551 transitions. [2023-12-20 01:33:30,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 01:33:30,954 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2023-12-20 01:33:30,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:30,966 INFO L225 Difference]: With dead ends: 832 [2023-12-20 01:33:30,966 INFO L226 Difference]: Without dead ends: 689 [2023-12-20 01:33:30,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:33:30,971 INFO L413 NwaCegarLoop]: 1285 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:30,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1285 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:30,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-12-20 01:33:31,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 689. [2023-12-20 01:33:31,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.872093023255814) internal successors, (1288), 688 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:31,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1288 transitions. [2023-12-20 01:33:31,035 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1288 transitions. Word has length 150 [2023-12-20 01:33:31,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:31,036 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1288 transitions. [2023-12-20 01:33:31,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:31,036 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1288 transitions. [2023-12-20 01:33:31,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-20 01:33:31,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:31,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:31,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:33:31,039 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:31,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:31,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2136292834, now seen corresponding path program 1 times [2023-12-20 01:33:31,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:31,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190293134] [2023-12-20 01:33:31,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:31,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:31,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:31,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190293134] [2023-12-20 01:33:31,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190293134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:31,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:31,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:33:31,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549474983] [2023-12-20 01:33:31,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:31,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:33:31,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:31,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:33:31,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:33:31,347 INFO L87 Difference]: Start difference. First operand 689 states and 1288 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:31,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:31,466 INFO L93 Difference]: Finished difference Result 832 states and 1545 transitions. [2023-12-20 01:33:31,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:33:31,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2023-12-20 01:33:31,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:31,470 INFO L225 Difference]: With dead ends: 832 [2023-12-20 01:33:31,471 INFO L226 Difference]: Without dead ends: 689 [2023-12-20 01:33:31,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:33:31,472 INFO L413 NwaCegarLoop]: 1285 mSDtfsCounter, 0 mSDsluCounter, 2502 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3787 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:31,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3787 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:33:31,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-12-20 01:33:31,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 689. [2023-12-20 01:33:31,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.7776162790697674) internal successors, (1223), 688 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1223 transitions. [2023-12-20 01:33:31,503 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1223 transitions. Word has length 150 [2023-12-20 01:33:31,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:31,504 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1223 transitions. [2023-12-20 01:33:31,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:31,504 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1223 transitions. [2023-12-20 01:33:31,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-20 01:33:31,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:31,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:31,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:33:31,507 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:31,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:31,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1498037184, now seen corresponding path program 1 times [2023-12-20 01:33:31,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:31,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041785403] [2023-12-20 01:33:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:31,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:31,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:31,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041785403] [2023-12-20 01:33:31,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041785403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:31,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:31,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:31,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097783422] [2023-12-20 01:33:31,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:31,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:31,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:31,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:31,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:31,690 INFO L87 Difference]: Start difference. First operand 689 states and 1223 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:31,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:31,731 INFO L93 Difference]: Finished difference Result 955 states and 1705 transitions. [2023-12-20 01:33:31,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:31,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2023-12-20 01:33:31,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:31,736 INFO L225 Difference]: With dead ends: 955 [2023-12-20 01:33:31,736 INFO L226 Difference]: Without dead ends: 815 [2023-12-20 01:33:31,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:31,743 INFO L413 NwaCegarLoop]: 1219 mSDtfsCounter, 220 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:31,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 2374 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:31,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2023-12-20 01:33:31,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 813. [2023-12-20 01:33:31,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 812 states have (on average 1.7795566502463054) internal successors, (1445), 812 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:31,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1445 transitions. [2023-12-20 01:33:31,765 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1445 transitions. Word has length 214 [2023-12-20 01:33:31,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:31,768 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 1445 transitions. [2023-12-20 01:33:31,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:31,772 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1445 transitions. [2023-12-20 01:33:31,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-20 01:33:31,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:31,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:31,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:33:31,776 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:31,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:31,777 INFO L85 PathProgramCache]: Analyzing trace with hash 843594662, now seen corresponding path program 1 times [2023-12-20 01:33:31,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:31,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157551674] [2023-12-20 01:33:31,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:31,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:31,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:31,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157551674] [2023-12-20 01:33:31,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157551674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:31,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:31,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:31,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663393214] [2023-12-20 01:33:31,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:31,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:31,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:31,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:31,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:31,918 INFO L87 Difference]: Start difference. First operand 813 states and 1445 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:31,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:31,945 INFO L93 Difference]: Finished difference Result 1317 states and 2353 transitions. [2023-12-20 01:33:31,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:31,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2023-12-20 01:33:31,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:31,949 INFO L225 Difference]: With dead ends: 1317 [2023-12-20 01:33:31,949 INFO L226 Difference]: Without dead ends: 1053 [2023-12-20 01:33:31,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:31,956 INFO L413 NwaCegarLoop]: 1218 mSDtfsCounter, 220 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:31,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 2382 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:31,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2023-12-20 01:33:31,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1051. [2023-12-20 01:33:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.7847619047619048) internal successors, (1874), 1050 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:31,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1874 transitions. [2023-12-20 01:33:31,978 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1874 transitions. Word has length 218 [2023-12-20 01:33:31,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:31,978 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1874 transitions. [2023-12-20 01:33:31,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:31,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1874 transitions. [2023-12-20 01:33:31,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-20 01:33:31,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:31,981 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:31,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:33:31,981 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:31,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:31,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1319265996, now seen corresponding path program 1 times [2023-12-20 01:33:31,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:31,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403057074] [2023-12-20 01:33:31,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:31,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:32,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:32,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403057074] [2023-12-20 01:33:32,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403057074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:32,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:32,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:32,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860967132] [2023-12-20 01:33:32,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:32,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:32,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:32,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:32,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:32,156 INFO L87 Difference]: Start difference. First operand 1051 states and 1874 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:32,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:32,189 INFO L93 Difference]: Finished difference Result 2007 states and 3596 transitions. [2023-12-20 01:33:32,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:32,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2023-12-20 01:33:32,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:32,194 INFO L225 Difference]: With dead ends: 2007 [2023-12-20 01:33:32,194 INFO L226 Difference]: Without dead ends: 1505 [2023-12-20 01:33:32,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:32,196 INFO L413 NwaCegarLoop]: 1218 mSDtfsCounter, 212 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 2383 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:32,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 2383 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:32,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-12-20 01:33:32,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1503. [2023-12-20 01:33:32,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1502 states have (on average 1.7882822902796272) internal successors, (2686), 1502 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:32,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 2686 transitions. [2023-12-20 01:33:32,222 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 2686 transitions. Word has length 222 [2023-12-20 01:33:32,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:32,222 INFO L495 AbstractCegarLoop]: Abstraction has 1503 states and 2686 transitions. [2023-12-20 01:33:32,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:32,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 2686 transitions. [2023-12-20 01:33:32,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-20 01:33:32,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:32,226 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:32,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:33:32,226 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:32,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:32,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1204960562, now seen corresponding path program 1 times [2023-12-20 01:33:32,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:32,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237475785] [2023-12-20 01:33:32,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:32,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:32,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:32,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237475785] [2023-12-20 01:33:32,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237475785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:32,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:32,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:32,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513100790] [2023-12-20 01:33:32,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:32,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:32,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:32,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:32,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:32,382 INFO L87 Difference]: Start difference. First operand 1503 states and 2686 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:32,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:32,419 INFO L93 Difference]: Finished difference Result 3315 states and 5944 transitions. [2023-12-20 01:33:32,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:32,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 226 [2023-12-20 01:33:32,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:32,427 INFO L225 Difference]: With dead ends: 3315 [2023-12-20 01:33:32,427 INFO L226 Difference]: Without dead ends: 2361 [2023-12-20 01:33:32,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:32,430 INFO L413 NwaCegarLoop]: 1218 mSDtfsCounter, 204 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:32,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 2384 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:32,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2023-12-20 01:33:32,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 2359. [2023-12-20 01:33:32,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 2358 states have (on average 1.7888040712468194) internal successors, (4218), 2358 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:32,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 4218 transitions. [2023-12-20 01:33:32,491 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 4218 transitions. Word has length 226 [2023-12-20 01:33:32,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:32,492 INFO L495 AbstractCegarLoop]: Abstraction has 2359 states and 4218 transitions. [2023-12-20 01:33:32,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:32,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 4218 transitions. [2023-12-20 01:33:32,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-20 01:33:32,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:32,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:32,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:33:32,496 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:32,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:32,496 INFO L85 PathProgramCache]: Analyzing trace with hash -870236456, now seen corresponding path program 1 times [2023-12-20 01:33:32,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:32,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627279645] [2023-12-20 01:33:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:32,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:32,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:32,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627279645] [2023-12-20 01:33:32,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627279645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:32,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:32,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:32,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814916046] [2023-12-20 01:33:32,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:32,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:32,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:32,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:32,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:32,651 INFO L87 Difference]: Start difference. First operand 2359 states and 4218 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:32,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:32,697 INFO L93 Difference]: Finished difference Result 5787 states and 10364 transitions. [2023-12-20 01:33:32,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:32,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 230 [2023-12-20 01:33:32,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:32,710 INFO L225 Difference]: With dead ends: 5787 [2023-12-20 01:33:32,710 INFO L226 Difference]: Without dead ends: 3977 [2023-12-20 01:33:32,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:32,716 INFO L413 NwaCegarLoop]: 1218 mSDtfsCounter, 196 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:32,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 2385 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:32,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2023-12-20 01:33:32,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3975. [2023-12-20 01:33:32,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3975 states, 3974 states have (on average 1.78610971313538) internal successors, (7098), 3974 states have internal predecessors, (7098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:32,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3975 states to 3975 states and 7098 transitions. [2023-12-20 01:33:32,824 INFO L78 Accepts]: Start accepts. Automaton has 3975 states and 7098 transitions. Word has length 230 [2023-12-20 01:33:32,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:32,824 INFO L495 AbstractCegarLoop]: Abstraction has 3975 states and 7098 transitions. [2023-12-20 01:33:32,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:32,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3975 states and 7098 transitions. [2023-12-20 01:33:32,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-20 01:33:32,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:32,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:32,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:33:32,829 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:32,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:32,829 INFO L85 PathProgramCache]: Analyzing trace with hash -22484034, now seen corresponding path program 1 times [2023-12-20 01:33:32,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:32,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440528660] [2023-12-20 01:33:32,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:32,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:33,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:33,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:33,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440528660] [2023-12-20 01:33:33,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440528660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:33,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:33,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:33:33,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920059283] [2023-12-20 01:33:33,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:33,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:33:33,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:33,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:33:33,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:33:33,038 INFO L87 Difference]: Start difference. First operand 3975 states and 7098 transitions. Second operand has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:33,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:33,551 INFO L93 Difference]: Finished difference Result 23595 states and 42436 transitions. [2023-12-20 01:33:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 01:33:33,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2023-12-20 01:33:33,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:33,612 INFO L225 Difference]: With dead ends: 23595 [2023-12-20 01:33:33,613 INFO L226 Difference]: Without dead ends: 20169 [2023-12-20 01:33:33,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-20 01:33:33,622 INFO L413 NwaCegarLoop]: 1215 mSDtfsCounter, 2614 mSDsluCounter, 10161 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2614 SdHoareTripleChecker+Valid, 11376 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:33,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2614 Valid, 11376 Invalid, 379 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 01:33:33,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20169 states. [2023-12-20 01:33:33,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20169 to 7263. [2023-12-20 01:33:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7263 states, 7262 states have (on average 1.786422473147893) internal successors, (12973), 7262 states have internal predecessors, (12973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:33,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7263 states to 7263 states and 12973 transitions. [2023-12-20 01:33:33,857 INFO L78 Accepts]: Start accepts. Automaton has 7263 states and 12973 transitions. Word has length 234 [2023-12-20 01:33:33,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:33,857 INFO L495 AbstractCegarLoop]: Abstraction has 7263 states and 12973 transitions. [2023-12-20 01:33:33,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:33,858 INFO L276 IsEmpty]: Start isEmpty. Operand 7263 states and 12973 transitions. [2023-12-20 01:33:33,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-20 01:33:33,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:33,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:33,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:33:33,863 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:33,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:33,863 INFO L85 PathProgramCache]: Analyzing trace with hash -770747648, now seen corresponding path program 1 times [2023-12-20 01:33:33,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:33,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074902395] [2023-12-20 01:33:33,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:33,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:34,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:34,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074902395] [2023-12-20 01:33:34,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074902395] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:34,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:34,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:33:34,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453308383] [2023-12-20 01:33:34,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:34,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:33:34,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:34,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:33:34,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:33:34,023 INFO L87 Difference]: Start difference. First operand 7263 states and 12973 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:34,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:34,243 INFO L93 Difference]: Finished difference Result 21097 states and 37841 transitions. [2023-12-20 01:33:34,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:33:34,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2023-12-20 01:33:34,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:34,273 INFO L225 Difference]: With dead ends: 21097 [2023-12-20 01:33:34,274 INFO L226 Difference]: Without dead ends: 14383 [2023-12-20 01:33:34,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:33:34,288 INFO L413 NwaCegarLoop]: 1216 mSDtfsCounter, 732 mSDsluCounter, 2616 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 3832 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:34,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 3832 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:34,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14383 states. [2023-12-20 01:33:34,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14383 to 10790. [2023-12-20 01:33:34,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10790 states, 10789 states have (on average 1.7870052831587728) internal successors, (19280), 10789 states have internal predecessors, (19280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:34,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10790 states to 10790 states and 19280 transitions. [2023-12-20 01:33:34,597 INFO L78 Accepts]: Start accepts. Automaton has 10790 states and 19280 transitions. Word has length 235 [2023-12-20 01:33:34,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:34,598 INFO L495 AbstractCegarLoop]: Abstraction has 10790 states and 19280 transitions. [2023-12-20 01:33:34,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:34,598 INFO L276 IsEmpty]: Start isEmpty. Operand 10790 states and 19280 transitions. [2023-12-20 01:33:34,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-20 01:33:34,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:34,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:34,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:33:34,605 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:34,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:34,609 INFO L85 PathProgramCache]: Analyzing trace with hash 757143896, now seen corresponding path program 1 times [2023-12-20 01:33:34,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:34,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606469539] [2023-12-20 01:33:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:34,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:34,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:34,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:34,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606469539] [2023-12-20 01:33:34,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606469539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:34,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:34,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:34,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744238767] [2023-12-20 01:33:34,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:34,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:34,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:34,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:34,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:34,708 INFO L87 Difference]: Start difference. First operand 10790 states and 19280 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:34,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:34,888 INFO L93 Difference]: Finished difference Result 23791 states and 42624 transitions. [2023-12-20 01:33:34,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:34,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2023-12-20 01:33:34,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:34,912 INFO L225 Difference]: With dead ends: 23791 [2023-12-20 01:33:34,912 INFO L226 Difference]: Without dead ends: 16614 [2023-12-20 01:33:34,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:34,917 INFO L413 NwaCegarLoop]: 1419 mSDtfsCounter, 229 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:34,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 2605 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16614 states. [2023-12-20 01:33:35,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16614 to 16612. [2023-12-20 01:33:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16612 states, 16611 states have (on average 1.7836373487448076) internal successors, (29628), 16611 states have internal predecessors, (29628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16612 states to 16612 states and 29628 transitions. [2023-12-20 01:33:35,163 INFO L78 Accepts]: Start accepts. Automaton has 16612 states and 29628 transitions. Word has length 236 [2023-12-20 01:33:35,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:35,163 INFO L495 AbstractCegarLoop]: Abstraction has 16612 states and 29628 transitions. [2023-12-20 01:33:35,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:35,163 INFO L276 IsEmpty]: Start isEmpty. Operand 16612 states and 29628 transitions. [2023-12-20 01:33:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-20 01:33:35,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:35,167 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:35,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:33:35,167 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:35,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:35,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1595409544, now seen corresponding path program 1 times [2023-12-20 01:33:35,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:35,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080657656] [2023-12-20 01:33:35,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:35,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:35,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:35,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080657656] [2023-12-20 01:33:35,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080657656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:35,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:35,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:35,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862383140] [2023-12-20 01:33:35,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:35,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:35,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:35,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:35,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:35,270 INFO L87 Difference]: Start difference. First operand 16612 states and 29628 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:35,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:35,526 INFO L93 Difference]: Finished difference Result 32116 states and 57267 transitions. [2023-12-20 01:33:35,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:35,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2023-12-20 01:33:35,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:35,566 INFO L225 Difference]: With dead ends: 32116 [2023-12-20 01:33:35,566 INFO L226 Difference]: Without dead ends: 23490 [2023-12-20 01:33:35,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:35,576 INFO L413 NwaCegarLoop]: 1408 mSDtfsCounter, 221 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:35,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 2595 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:35,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23490 states. [2023-12-20 01:33:35,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23490 to 23488. [2023-12-20 01:33:35,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23488 states, 23487 states have (on average 1.7769830118789118) internal successors, (41736), 23487 states have internal predecessors, (41736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:35,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23488 states to 23488 states and 41736 transitions. [2023-12-20 01:33:35,957 INFO L78 Accepts]: Start accepts. Automaton has 23488 states and 41736 transitions. Word has length 236 [2023-12-20 01:33:35,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:35,957 INFO L495 AbstractCegarLoop]: Abstraction has 23488 states and 41736 transitions. [2023-12-20 01:33:35,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:35,958 INFO L276 IsEmpty]: Start isEmpty. Operand 23488 states and 41736 transitions. [2023-12-20 01:33:35,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-20 01:33:35,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:35,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:35,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 01:33:35,961 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:35,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:35,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1908212328, now seen corresponding path program 1 times [2023-12-20 01:33:35,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:35,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636783702] [2023-12-20 01:33:35,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:35,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:36,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:36,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636783702] [2023-12-20 01:33:36,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636783702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:36,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:36,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:36,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469372447] [2023-12-20 01:33:36,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:36,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:36,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:36,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:36,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:36,204 INFO L87 Difference]: Start difference. First operand 23488 states and 41736 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:36,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:36,459 INFO L93 Difference]: Finished difference Result 45456 states and 80743 transitions. [2023-12-20 01:33:36,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:36,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2023-12-20 01:33:36,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:36,515 INFO L225 Difference]: With dead ends: 45456 [2023-12-20 01:33:36,516 INFO L226 Difference]: Without dead ends: 33158 [2023-12-20 01:33:36,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:36,539 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 213 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:36,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2576 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:36,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33158 states. [2023-12-20 01:33:37,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33158 to 33156. [2023-12-20 01:33:37,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33156 states, 33155 states have (on average 1.7695068617101493) internal successors, (58668), 33155 states have internal predecessors, (58668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:37,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33156 states to 33156 states and 58668 transitions. [2023-12-20 01:33:37,242 INFO L78 Accepts]: Start accepts. Automaton has 33156 states and 58668 transitions. Word has length 236 [2023-12-20 01:33:37,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:37,242 INFO L495 AbstractCegarLoop]: Abstraction has 33156 states and 58668 transitions. [2023-12-20 01:33:37,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:37,243 INFO L276 IsEmpty]: Start isEmpty. Operand 33156 states and 58668 transitions. [2023-12-20 01:33:37,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-20 01:33:37,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:37,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:37,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:33:37,246 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:37,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:37,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1532108728, now seen corresponding path program 1 times [2023-12-20 01:33:37,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:37,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835528745] [2023-12-20 01:33:37,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:37,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:37,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:37,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:37,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835528745] [2023-12-20 01:33:37,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835528745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:37,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:37,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:37,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199516133] [2023-12-20 01:33:37,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:37,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:37,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:37,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:37,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:37,370 INFO L87 Difference]: Start difference. First operand 33156 states and 58668 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:37,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:37,971 INFO L93 Difference]: Finished difference Result 64180 states and 113507 transitions. [2023-12-20 01:33:37,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:37,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2023-12-20 01:33:37,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:38,058 INFO L225 Difference]: With dead ends: 64180 [2023-12-20 01:33:38,059 INFO L226 Difference]: Without dead ends: 46694 [2023-12-20 01:33:38,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:38,084 INFO L413 NwaCegarLoop]: 1368 mSDtfsCounter, 205 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:38,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 2557 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:38,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46694 states. [2023-12-20 01:33:38,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46694 to 46692. [2023-12-20 01:33:38,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46692 states, 46691 states have (on average 1.7610674434045106) internal successors, (82226), 46691 states have internal predecessors, (82226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:39,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46692 states to 46692 states and 82226 transitions. [2023-12-20 01:33:39,121 INFO L78 Accepts]: Start accepts. Automaton has 46692 states and 82226 transitions. Word has length 236 [2023-12-20 01:33:39,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:39,121 INFO L495 AbstractCegarLoop]: Abstraction has 46692 states and 82226 transitions. [2023-12-20 01:33:39,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:39,122 INFO L276 IsEmpty]: Start isEmpty. Operand 46692 states and 82226 transitions. [2023-12-20 01:33:39,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-20 01:33:39,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:39,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:39,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:33:39,124 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:39,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:39,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1909104168, now seen corresponding path program 1 times [2023-12-20 01:33:39,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:39,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369767430] [2023-12-20 01:33:39,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:39,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:39,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:39,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:39,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369767430] [2023-12-20 01:33:39,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369767430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:39,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:39,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:33:39,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199857605] [2023-12-20 01:33:39,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:39,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:33:39,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:39,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:33:39,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:39,269 INFO L87 Difference]: Start difference. First operand 46692 states and 82226 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:39,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:39,946 INFO L93 Difference]: Finished difference Result 90340 states and 158983 transitions. [2023-12-20 01:33:39,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:33:39,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2023-12-20 01:33:39,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:40,110 INFO L225 Difference]: With dead ends: 90340 [2023-12-20 01:33:40,110 INFO L226 Difference]: Without dead ends: 65552 [2023-12-20 01:33:40,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:33:40,137 INFO L413 NwaCegarLoop]: 1348 mSDtfsCounter, 197 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:40,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 2538 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:40,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65552 states. [2023-12-20 01:33:41,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65552 to 65550. [2023-12-20 01:33:41,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65550 states, 65549 states have (on average 1.751483622938565) internal successors, (114808), 65549 states have internal predecessors, (114808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:41,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65550 states to 65550 states and 114808 transitions. [2023-12-20 01:33:41,638 INFO L78 Accepts]: Start accepts. Automaton has 65550 states and 114808 transitions. Word has length 236 [2023-12-20 01:33:41,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:41,638 INFO L495 AbstractCegarLoop]: Abstraction has 65550 states and 114808 transitions. [2023-12-20 01:33:41,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:41,639 INFO L276 IsEmpty]: Start isEmpty. Operand 65550 states and 114808 transitions. [2023-12-20 01:33:41,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-20 01:33:41,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:41,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:41,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 01:33:41,641 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:41,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:41,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1808335847, now seen corresponding path program 1 times [2023-12-20 01:33:41,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:41,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267596499] [2023-12-20 01:33:41,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:41,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:41,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:41,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267596499] [2023-12-20 01:33:41,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267596499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:41,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:41,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:33:41,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035263138] [2023-12-20 01:33:41,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:41,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:33:41,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:41,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:33:41,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:33:41,933 INFO L87 Difference]: Start difference. First operand 65550 states and 114808 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:43,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:43,349 INFO L93 Difference]: Finished difference Result 216841 states and 379871 transitions. [2023-12-20 01:33:43,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:33:43,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2023-12-20 01:33:43,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:43,683 INFO L225 Difference]: With dead ends: 216841 [2023-12-20 01:33:43,683 INFO L226 Difference]: Without dead ends: 151890 [2023-12-20 01:33:43,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:33:43,766 INFO L413 NwaCegarLoop]: 1213 mSDtfsCounter, 730 mSDsluCounter, 2618 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 3831 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:43,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 3831 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:43,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151890 states. [2023-12-20 01:33:45,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151890 to 108451. [2023-12-20 01:33:45,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108451 states, 108450 states have (on average 1.743891194098663) internal successors, (189125), 108450 states have internal predecessors, (189125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:46,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108451 states to 108451 states and 189125 transitions. [2023-12-20 01:33:46,340 INFO L78 Accepts]: Start accepts. Automaton has 108451 states and 189125 transitions. Word has length 236 [2023-12-20 01:33:46,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:46,340 INFO L495 AbstractCegarLoop]: Abstraction has 108451 states and 189125 transitions. [2023-12-20 01:33:46,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:46,341 INFO L276 IsEmpty]: Start isEmpty. Operand 108451 states and 189125 transitions. [2023-12-20 01:33:46,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-12-20 01:33:46,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:46,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:46,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 01:33:46,343 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:46,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash 160997321, now seen corresponding path program 1 times [2023-12-20 01:33:46,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:46,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529187132] [2023-12-20 01:33:46,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:46,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:46,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:46,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529187132] [2023-12-20 01:33:46,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529187132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:46,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:46,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:33:46,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139737439] [2023-12-20 01:33:46,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:46,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:33:46,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:46,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:33:46,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:33:46,500 INFO L87 Difference]: Start difference. First operand 108451 states and 189125 transitions. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:48,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:48,734 INFO L93 Difference]: Finished difference Result 358831 states and 625901 transitions. [2023-12-20 01:33:48,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:33:48,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2023-12-20 01:33:48,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:49,280 INFO L225 Difference]: With dead ends: 358831 [2023-12-20 01:33:49,280 INFO L226 Difference]: Without dead ends: 250979 [2023-12-20 01:33:49,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:33:49,565 INFO L413 NwaCegarLoop]: 1209 mSDtfsCounter, 728 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:49,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 3829 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:49,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250979 states. [2023-12-20 01:33:52,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250979 to 179272. [2023-12-20 01:33:52,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179272 states, 179271 states have (on average 1.736309832599807) internal successors, (311270), 179271 states have internal predecessors, (311270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179272 states to 179272 states and 311270 transitions. [2023-12-20 01:33:53,341 INFO L78 Accepts]: Start accepts. Automaton has 179272 states and 311270 transitions. Word has length 237 [2023-12-20 01:33:53,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:33:53,341 INFO L495 AbstractCegarLoop]: Abstraction has 179272 states and 311270 transitions. [2023-12-20 01:33:53,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:53,342 INFO L276 IsEmpty]: Start isEmpty. Operand 179272 states and 311270 transitions. [2023-12-20 01:33:53,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-20 01:33:53,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:33:53,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:33:53,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 01:33:53,348 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:33:53,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:33:53,348 INFO L85 PathProgramCache]: Analyzing trace with hash 638562320, now seen corresponding path program 1 times [2023-12-20 01:33:53,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:33:53,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35723420] [2023-12-20 01:33:53,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:33:53,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:33:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:33:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:33:53,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:33:53,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35723420] [2023-12-20 01:33:53,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35723420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:33:53,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:33:53,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:33:53,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078947368] [2023-12-20 01:33:53,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:33:53,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:33:53,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:33:53,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:33:53,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:33:53,735 INFO L87 Difference]: Start difference. First operand 179272 states and 311270 transitions. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:33:57,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:33:57,271 INFO L93 Difference]: Finished difference Result 591525 states and 1027347 transitions. [2023-12-20 01:33:57,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:33:57,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-12-20 01:33:57,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:33:58,538 INFO L225 Difference]: With dead ends: 591525 [2023-12-20 01:33:58,539 INFO L226 Difference]: Without dead ends: 412852 [2023-12-20 01:33:58,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:33:58,645 INFO L413 NwaCegarLoop]: 1209 mSDtfsCounter, 726 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 3831 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:33:58,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 3831 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:33:58,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412852 states. [2023-12-20 01:34:03,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412852 to 295337. [2023-12-20 01:34:03,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295337 states, 295336 states have (on average 1.7288207329956389) internal successors, (510583), 295336 states have internal predecessors, (510583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:34:05,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295337 states to 295337 states and 510583 transitions. [2023-12-20 01:34:05,072 INFO L78 Accepts]: Start accepts. Automaton has 295337 states and 510583 transitions. Word has length 238 [2023-12-20 01:34:05,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:34:05,072 INFO L495 AbstractCegarLoop]: Abstraction has 295337 states and 510583 transitions. [2023-12-20 01:34:05,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:34:05,073 INFO L276 IsEmpty]: Start isEmpty. Operand 295337 states and 510583 transitions. [2023-12-20 01:34:05,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-12-20 01:34:05,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:34:05,094 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:34:05,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 01:34:05,094 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:34:05,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:34:05,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1731340142, now seen corresponding path program 1 times [2023-12-20 01:34:05,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:34:05,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353148625] [2023-12-20 01:34:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:34:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:34:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:34:05,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:34:05,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:34:05,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353148625] [2023-12-20 01:34:05,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353148625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:34:05,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:34:05,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:34:05,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457451158] [2023-12-20 01:34:05,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:34:05,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:34:05,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:34:05,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:34:05,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:34:05,247 INFO L87 Difference]: Start difference. First operand 295337 states and 510583 transitions. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:34:11,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:34:11,437 INFO L93 Difference]: Finished difference Result 967699 states and 1673593 transitions. [2023-12-20 01:34:11,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:34:11,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2023-12-20 01:34:11,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:34:13,090 INFO L225 Difference]: With dead ends: 967699 [2023-12-20 01:34:13,090 INFO L226 Difference]: Without dead ends: 672961 [2023-12-20 01:34:13,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:34:13,260 INFO L413 NwaCegarLoop]: 1209 mSDtfsCounter, 724 mSDsluCounter, 2624 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 3833 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:34:13,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 3833 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:34:13,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672961 states. [2023-12-20 01:34:22,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672961 to 482978. [2023-12-20 01:34:23,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482978 states, 482977 states have (on average 1.7215643809125487) internal successors, (831476), 482977 states have internal predecessors, (831476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:34:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482978 states to 482978 states and 831476 transitions. [2023-12-20 01:34:25,744 INFO L78 Accepts]: Start accepts. Automaton has 482978 states and 831476 transitions. Word has length 239 [2023-12-20 01:34:25,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:34:25,744 INFO L495 AbstractCegarLoop]: Abstraction has 482978 states and 831476 transitions. [2023-12-20 01:34:25,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:34:25,745 INFO L276 IsEmpty]: Start isEmpty. Operand 482978 states and 831476 transitions. [2023-12-20 01:34:25,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-20 01:34:25,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:34:25,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:34:25,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 01:34:25,746 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:34:25,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:34:25,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1149340026, now seen corresponding path program 1 times [2023-12-20 01:34:25,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:34:25,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116891471] [2023-12-20 01:34:25,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:34:25,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:34:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:34:26,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:34:26,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:34:26,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116891471] [2023-12-20 01:34:26,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116891471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:34:26,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:34:26,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:34:26,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193618330] [2023-12-20 01:34:26,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:34:26,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:34:26,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:34:26,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:34:26,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:34:26,294 INFO L87 Difference]: Start difference. First operand 482978 states and 831476 transitions. Second operand has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:34:32,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:34:32,074 INFO L93 Difference]: Finished difference Result 965359 states and 1661902 transitions. [2023-12-20 01:34:32,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:34:32,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 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 241 [2023-12-20 01:34:32,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:34:33,197 INFO L225 Difference]: With dead ends: 965359 [2023-12-20 01:34:33,197 INFO L226 Difference]: Without dead ends: 482980 [2023-12-20 01:34:33,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-20 01:34:33,387 INFO L413 NwaCegarLoop]: 1213 mSDtfsCounter, 996 mSDsluCounter, 4708 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 5921 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:34:33,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 5921 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:34:33,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482980 states. [2023-12-20 01:34:40,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482980 to 482978. [2023-12-20 01:34:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482978 states, 482977 states have (on average 1.7150940935075583) internal successors, (828351), 482977 states have internal predecessors, (828351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:34:44,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482978 states to 482978 states and 828351 transitions. [2023-12-20 01:34:44,071 INFO L78 Accepts]: Start accepts. Automaton has 482978 states and 828351 transitions. Word has length 241 [2023-12-20 01:34:44,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:34:44,071 INFO L495 AbstractCegarLoop]: Abstraction has 482978 states and 828351 transitions. [2023-12-20 01:34:44,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:34:44,071 INFO L276 IsEmpty]: Start isEmpty. Operand 482978 states and 828351 transitions. [2023-12-20 01:34:44,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-20 01:34:44,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:34:44,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:34:44,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 01:34:44,076 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:34:44,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:34:44,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1073462419, now seen corresponding path program 1 times [2023-12-20 01:34:44,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:34:44,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163928758] [2023-12-20 01:34:44,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:34:44,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:34:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:34:44,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:34:44,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:34:44,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163928758] [2023-12-20 01:34:44,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163928758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:34:44,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:34:44,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:34:44,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219730382] [2023-12-20 01:34:44,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:34:44,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:34:44,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:34:44,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:34:44,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:34:44,767 INFO L87 Difference]: Start difference. First operand 482978 states and 828351 transitions. Second operand has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:34:54,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:34:54,369 INFO L93 Difference]: Finished difference Result 1427995 states and 2450574 transitions. [2023-12-20 01:34:54,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:34:54,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 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 244 [2023-12-20 01:34:54,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:34:57,686 INFO L225 Difference]: With dead ends: 1427995 [2023-12-20 01:34:57,686 INFO L226 Difference]: Without dead ends: 945616 [2023-12-20 01:34:58,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-20 01:34:58,297 INFO L413 NwaCegarLoop]: 1204 mSDtfsCounter, 202 mSDsluCounter, 5920 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 7124 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 01:34:58,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 7124 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 01:34:59,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945616 states. [2023-12-20 01:35:14,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945616 to 945614. [2023-12-20 01:35:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945614 states, 945613 states have (on average 1.705742201090721) internal successors, (1612972), 945613 states have internal predecessors, (1612972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:35:19,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945614 states to 945614 states and 1612972 transitions. [2023-12-20 01:35:19,277 INFO L78 Accepts]: Start accepts. Automaton has 945614 states and 1612972 transitions. Word has length 244 [2023-12-20 01:35:19,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:35:19,280 INFO L495 AbstractCegarLoop]: Abstraction has 945614 states and 1612972 transitions. [2023-12-20 01:35:19,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:35:19,280 INFO L276 IsEmpty]: Start isEmpty. Operand 945614 states and 1612972 transitions. [2023-12-20 01:35:19,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-20 01:35:19,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:35:19,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:35:19,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 01:35:19,282 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:35:19,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:35:19,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1067766129, now seen corresponding path program 1 times [2023-12-20 01:35:19,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:35:19,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532929008] [2023-12-20 01:35:19,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:35:19,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:35:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:35:19,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:35:19,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:35:19,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532929008] [2023-12-20 01:35:19,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532929008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:35:19,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:35:19,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:35:19,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734810263] [2023-12-20 01:35:19,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:35:19,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:35:19,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:35:19,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:35:19,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:35:19,675 INFO L87 Difference]: Start difference. First operand 945614 states and 1612972 transitions. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)