/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-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 03:39:09,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 03:39:09,538 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 03:39:09,540 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 03:39:09,541 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 03:39:09,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 03:39:09,555 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 03:39:09,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 03:39:09,556 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 03:39:09,556 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 03:39:09,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 03:39:09,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 03:39:09,557 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 03:39:09,557 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 03:39:09,557 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 03:39:09,557 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 03:39:09,558 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 03:39:09,558 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 03:39:09,558 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 03:39:09,558 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 03:39:09,558 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 03:39:09,561 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 03:39:09,562 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 03:39:09,562 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 03:39:09,562 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 03:39:09,562 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 03:39:09,562 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 03:39:09,563 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 03:39:09,563 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 03:39:09,563 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 03:39:09,564 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 03:39:09,564 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 03:39:09,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:39:09,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 03:39:09,564 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 03:39:09,564 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 03:39:09,564 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 03:39:09,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 03:39:09,565 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 03:39:09,565 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 03:39:09,565 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 03:39:09,565 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 03:39:09,565 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 03:39:09,565 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 03:39:09,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 03:39:09,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 03:39:09,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 03:39:09,758 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 03:39:09,758 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 03:39:09,759 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2023-12-20 03:39:10,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 03:39:10,947 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 03:39:10,948 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2023-12-20 03:39:10,963 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2da32e76b/deceb9efe0cd4530937e4fe98e28659a/FLAGfba219c91 [2023-12-20 03:39:10,974 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2da32e76b/deceb9efe0cd4530937e4fe98e28659a [2023-12-20 03:39:10,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 03:39:10,977 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 03:39:10,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 03:39:10,978 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 03:39:10,982 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 03:39:10,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:39:10" (1/1) ... [2023-12-20 03:39:10,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff4a343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:39:10, skipping insertion in model container [2023-12-20 03:39:10,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:39:10" (1/1) ... [2023-12-20 03:39:11,023 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 03:39:11,184 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-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c[7631,7644] [2023-12-20 03:39:11,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:39:11,220 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 03:39:11,262 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-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c[7631,7644] [2023-12-20 03:39:11,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:39:11,288 INFO L206 MainTranslator]: Completed translation [2023-12-20 03:39:11,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:39:11 WrapperNode [2023-12-20 03:39:11,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 03:39:11,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 03:39:11,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 03:39:11,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 03:39:11,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:39:11" (1/1) ... [2023-12-20 03:39:11,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:39:11" (1/1) ... [2023-12-20 03:39:11,339 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 622 [2023-12-20 03:39:11,339 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 03:39:11,339 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 03:39:11,340 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 03:39:11,340 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 03:39:11,347 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:39:11" (1/1) ... [2023-12-20 03:39:11,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:39:11" (1/1) ... [2023-12-20 03:39:11,350 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:39:11" (1/1) ... [2023-12-20 03:39:11,366 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 03:39:11,367 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:39:11" (1/1) ... [2023-12-20 03:39:11,367 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:39:11" (1/1) ... [2023-12-20 03:39:11,384 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:39:11" (1/1) ... [2023-12-20 03:39:11,387 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:39:11" (1/1) ... [2023-12-20 03:39:11,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:39:11" (1/1) ... [2023-12-20 03:39:11,390 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:39:11" (1/1) ... [2023-12-20 03:39:11,392 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 03:39:11,393 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 03:39:11,393 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 03:39:11,393 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 03:39:11,393 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:39:11" (1/1) ... [2023-12-20 03:39:11,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:39:11,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:39:11,428 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 03:39:11,436 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 03:39:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 03:39:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 03:39:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 03:39:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 03:39:11,573 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 03:39:11,574 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 03:39:11,922 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 03:39:11,946 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 03:39:11,946 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 03:39:11,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:39:11 BoogieIcfgContainer [2023-12-20 03:39:11,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 03:39:11,948 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 03:39:11,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 03:39:11,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 03:39:11,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 03:39:10" (1/3) ... [2023-12-20 03:39:11,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20730844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:39:11, skipping insertion in model container [2023-12-20 03:39:11,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:39:11" (2/3) ... [2023-12-20 03:39:11,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20730844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:39:11, skipping insertion in model container [2023-12-20 03:39:11,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:39:11" (3/3) ... [2023-12-20 03:39:11,952 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2023-12-20 03:39:11,963 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 03:39:11,963 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 03:39:11,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 03:39:11,997 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;@203719ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 03:39:11,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 03:39:12,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 132 states have (on average 1.7651515151515151) internal successors, (233), 133 states have internal predecessors, (233), 0 states have call successors, (0), 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 03:39:12,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 03:39:12,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:12,009 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] [2023-12-20 03:39:12,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:12,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:12,013 INFO L85 PathProgramCache]: Analyzing trace with hash 555090615, now seen corresponding path program 1 times [2023-12-20 03:39:12,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:12,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467813194] [2023-12-20 03:39:12,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:12,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:12,376 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 03:39:12,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:12,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467813194] [2023-12-20 03:39:12,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467813194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:12,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:12,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:39:12,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047936310] [2023-12-20 03:39:12,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:12,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:39:12,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:12,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:39:12,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:39:12,400 INFO L87 Difference]: Start difference. First operand has 134 states, 132 states have (on average 1.7651515151515151) internal successors, (233), 133 states have internal predecessors, (233), 0 states have call successors, (0), 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 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:12,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:12,449 INFO L93 Difference]: Finished difference Result 290 states and 480 transitions. [2023-12-20 03:39:12,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:39:12,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-20 03:39:12,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:12,462 INFO L225 Difference]: With dead ends: 290 [2023-12-20 03:39:12,462 INFO L226 Difference]: Without dead ends: 204 [2023-12-20 03:39:12,464 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 03:39:12,470 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 165 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 467 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 03:39:12,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 467 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:39:12,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-20 03:39:12,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2023-12-20 03:39:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.4477611940298507) internal successors, (291), 201 states have internal predecessors, (291), 0 states have call successors, (0), 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 03:39:12,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 291 transitions. [2023-12-20 03:39:12,509 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 291 transitions. Word has length 85 [2023-12-20 03:39:12,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:12,509 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 291 transitions. [2023-12-20 03:39:12,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:12,509 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 291 transitions. [2023-12-20 03:39:12,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 03:39:12,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:12,511 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] [2023-12-20 03:39:12,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 03:39:12,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:12,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:12,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2129284340, now seen corresponding path program 1 times [2023-12-20 03:39:12,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:12,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073372067] [2023-12-20 03:39:12,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:12,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:12,613 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 03:39:12,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:12,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073372067] [2023-12-20 03:39:12,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073372067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:12,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:12,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:39:12,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57216816] [2023-12-20 03:39:12,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:12,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:39:12,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:12,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:39:12,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:39:12,621 INFO L87 Difference]: Start difference. First operand 202 states and 291 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 03:39:12,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:12,644 INFO L93 Difference]: Finished difference Result 486 states and 743 transitions. [2023-12-20 03:39:12,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:39:12,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 03:39:12,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:12,646 INFO L225 Difference]: With dead ends: 486 [2023-12-20 03:39:12,646 INFO L226 Difference]: Without dead ends: 336 [2023-12-20 03:39:12,647 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 03:39:12,648 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 112 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:12,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 406 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:39:12,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-12-20 03:39:12,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 334. [2023-12-20 03:39:12,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 1.5045045045045045) internal successors, (501), 333 states have internal predecessors, (501), 0 states have call successors, (0), 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 03:39:12,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 501 transitions. [2023-12-20 03:39:12,669 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 501 transitions. Word has length 86 [2023-12-20 03:39:12,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:12,669 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 501 transitions. [2023-12-20 03:39:12,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 03:39:12,669 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 501 transitions. [2023-12-20 03:39:12,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 03:39:12,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:12,671 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] [2023-12-20 03:39:12,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 03:39:12,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:12,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:12,672 INFO L85 PathProgramCache]: Analyzing trace with hash 2096979309, now seen corresponding path program 1 times [2023-12-20 03:39:12,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:12,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797318053] [2023-12-20 03:39:12,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:12,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:12,807 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 03:39:12,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:12,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797318053] [2023-12-20 03:39:12,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797318053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:12,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:12,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:39:12,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624418213] [2023-12-20 03:39:12,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:12,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:39:12,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:12,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:39:12,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:39:12,813 INFO L87 Difference]: Start difference. First operand 334 states and 501 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:12,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:12,834 INFO L93 Difference]: Finished difference Result 866 states and 1347 transitions. [2023-12-20 03:39:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:39:12,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-20 03:39:12,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:12,839 INFO L225 Difference]: With dead ends: 866 [2023-12-20 03:39:12,839 INFO L226 Difference]: Without dead ends: 584 [2023-12-20 03:39:12,842 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 03:39:12,843 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 107 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:12,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 402 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:39:12,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-12-20 03:39:12,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 582. [2023-12-20 03:39:12,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 581 states have (on average 1.5370051635111877) internal successors, (893), 581 states have internal predecessors, (893), 0 states have call successors, (0), 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 03:39:12,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 893 transitions. [2023-12-20 03:39:12,862 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 893 transitions. Word has length 87 [2023-12-20 03:39:12,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:12,862 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 893 transitions. [2023-12-20 03:39:12,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:12,862 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 893 transitions. [2023-12-20 03:39:12,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 03:39:12,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:12,864 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] [2023-12-20 03:39:12,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 03:39:12,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:12,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:12,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1649402853, now seen corresponding path program 1 times [2023-12-20 03:39:12,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:12,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777737988] [2023-12-20 03:39:12,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:12,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:12,935 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 03:39:12,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:12,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777737988] [2023-12-20 03:39:12,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777737988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:12,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:12,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:39:12,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490240062] [2023-12-20 03:39:12,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:12,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:39:12,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:12,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:39:12,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:39:12,937 INFO L87 Difference]: Start difference. First operand 582 states and 893 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:12,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:12,966 INFO L93 Difference]: Finished difference Result 1578 states and 2471 transitions. [2023-12-20 03:39:12,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:39:12,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-20 03:39:12,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:12,969 INFO L225 Difference]: With dead ends: 1578 [2023-12-20 03:39:12,969 INFO L226 Difference]: Without dead ends: 1048 [2023-12-20 03:39:12,970 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 03:39:12,971 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 102 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:12,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 398 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:39:12,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2023-12-20 03:39:12,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1046. [2023-12-20 03:39:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1045 states have (on average 1.551196172248804) internal successors, (1621), 1045 states have internal predecessors, (1621), 0 states have call successors, (0), 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 03:39:12,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1621 transitions. [2023-12-20 03:39:12,987 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1621 transitions. Word has length 88 [2023-12-20 03:39:12,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:12,987 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1621 transitions. [2023-12-20 03:39:12,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:12,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1621 transitions. [2023-12-20 03:39:12,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-20 03:39:12,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:12,989 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] [2023-12-20 03:39:12,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 03:39:12,989 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:12,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:12,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2093999040, now seen corresponding path program 1 times [2023-12-20 03:39:12,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:12,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127268805] [2023-12-20 03:39:12,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:12,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:13,042 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 03:39:13,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:13,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127268805] [2023-12-20 03:39:13,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127268805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:13,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:13,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:39:13,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164745865] [2023-12-20 03:39:13,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:13,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:39:13,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:13,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:39:13,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:39:13,043 INFO L87 Difference]: Start difference. First operand 1046 states and 1621 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:13,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:13,064 INFO L93 Difference]: Finished difference Result 2906 states and 4551 transitions. [2023-12-20 03:39:13,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:39:13,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-20 03:39:13,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:13,070 INFO L225 Difference]: With dead ends: 2906 [2023-12-20 03:39:13,070 INFO L226 Difference]: Without dead ends: 1912 [2023-12-20 03:39:13,071 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 03:39:13,072 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 97 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:13,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 394 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:39:13,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2023-12-20 03:39:13,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1910. [2023-12-20 03:39:13,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1909 states have (on average 1.5531691985332634) internal successors, (2965), 1909 states have internal predecessors, (2965), 0 states have call successors, (0), 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 03:39:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2965 transitions. [2023-12-20 03:39:13,099 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2965 transitions. Word has length 89 [2023-12-20 03:39:13,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:13,100 INFO L495 AbstractCegarLoop]: Abstraction has 1910 states and 2965 transitions. [2023-12-20 03:39:13,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:13,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2965 transitions. [2023-12-20 03:39:13,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 03:39:13,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:13,103 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] [2023-12-20 03:39:13,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 03:39:13,103 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:13,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:13,104 INFO L85 PathProgramCache]: Analyzing trace with hash 999636698, now seen corresponding path program 1 times [2023-12-20 03:39:13,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:13,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967371396] [2023-12-20 03:39:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:13,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:13,170 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 03:39:13,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:13,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967371396] [2023-12-20 03:39:13,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967371396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:13,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:13,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:39:13,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523167038] [2023-12-20 03:39:13,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:13,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:39:13,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:13,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:39:13,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:39:13,173 INFO L87 Difference]: Start difference. First operand 1910 states and 2965 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 03:39:13,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:13,199 INFO L93 Difference]: Finished difference Result 5370 states and 8375 transitions. [2023-12-20 03:39:13,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:39:13,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-20 03:39:13,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:13,208 INFO L225 Difference]: With dead ends: 5370 [2023-12-20 03:39:13,208 INFO L226 Difference]: Without dead ends: 3512 [2023-12-20 03:39:13,210 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 03:39:13,213 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 92 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:13,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 390 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:39:13,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2023-12-20 03:39:13,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 3510. [2023-12-20 03:39:13,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 3509 states have (on average 1.5471644343117696) internal successors, (5429), 3509 states have internal predecessors, (5429), 0 states have call successors, (0), 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 03:39:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 5429 transitions. [2023-12-20 03:39:13,279 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 5429 transitions. Word has length 90 [2023-12-20 03:39:13,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:13,279 INFO L495 AbstractCegarLoop]: Abstraction has 3510 states and 5429 transitions. [2023-12-20 03:39:13,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 03:39:13,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 5429 transitions. [2023-12-20 03:39:13,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 03:39:13,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:13,281 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] [2023-12-20 03:39:13,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 03:39:13,282 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:13,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:13,282 INFO L85 PathProgramCache]: Analyzing trace with hash 335643408, now seen corresponding path program 1 times [2023-12-20 03:39:13,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:13,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95052090] [2023-12-20 03:39:13,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:13,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:13,357 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 03:39:13,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:13,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95052090] [2023-12-20 03:39:13,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95052090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:13,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:13,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:39:13,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015584540] [2023-12-20 03:39:13,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:13,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:39:13,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:13,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:39:13,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:39:13,358 INFO L87 Difference]: Start difference. First operand 3510 states and 5429 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:13,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:13,407 INFO L93 Difference]: Finished difference Result 9914 states and 15351 transitions. [2023-12-20 03:39:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:39:13,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-20 03:39:13,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:13,423 INFO L225 Difference]: With dead ends: 9914 [2023-12-20 03:39:13,423 INFO L226 Difference]: Without dead ends: 6456 [2023-12-20 03:39:13,428 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 03:39:13,429 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 87 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:13,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 386 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:39:13,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2023-12-20 03:39:13,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 6454. [2023-12-20 03:39:13,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6454 states, 6453 states have (on average 1.5355648535564854) internal successors, (9909), 6453 states have internal predecessors, (9909), 0 states have call successors, (0), 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 03:39:13,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6454 states to 6454 states and 9909 transitions. [2023-12-20 03:39:13,525 INFO L78 Accepts]: Start accepts. Automaton has 6454 states and 9909 transitions. Word has length 91 [2023-12-20 03:39:13,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:13,525 INFO L495 AbstractCegarLoop]: Abstraction has 6454 states and 9909 transitions. [2023-12-20 03:39:13,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:13,526 INFO L276 IsEmpty]: Start isEmpty. Operand 6454 states and 9909 transitions. [2023-12-20 03:39:13,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 03:39:13,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:13,526 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] [2023-12-20 03:39:13,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 03:39:13,526 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:13,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:13,527 INFO L85 PathProgramCache]: Analyzing trace with hash 426949996, now seen corresponding path program 1 times [2023-12-20 03:39:13,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:13,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705865620] [2023-12-20 03:39:13,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:13,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:13,695 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 03:39:13,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:13,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705865620] [2023-12-20 03:39:13,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705865620] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:13,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:13,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 03:39:13,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674041733] [2023-12-20 03:39:13,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:13,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:39:13,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:13,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:39:13,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:39:13,696 INFO L87 Difference]: Start difference. First operand 6454 states and 9909 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 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 03:39:14,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:14,266 INFO L93 Difference]: Finished difference Result 96082 states and 147907 transitions. [2023-12-20 03:39:14,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 03:39:14,267 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-20 03:39:14,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:14,433 INFO L225 Difference]: With dead ends: 96082 [2023-12-20 03:39:14,434 INFO L226 Difference]: Without dead ends: 89680 [2023-12-20 03:39:14,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-12-20 03:39:14,471 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 2471 mSDsluCounter, 3751 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2471 SdHoareTripleChecker+Valid, 3925 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:14,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2471 Valid, 3925 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:39:14,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89680 states. [2023-12-20 03:39:15,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89680 to 12854. [2023-12-20 03:39:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12854 states, 12853 states have (on average 1.5178557535205788) internal successors, (19509), 12853 states have internal predecessors, (19509), 0 states have call successors, (0), 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 03:39:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12854 states to 12854 states and 19509 transitions. [2023-12-20 03:39:15,277 INFO L78 Accepts]: Start accepts. Automaton has 12854 states and 19509 transitions. Word has length 92 [2023-12-20 03:39:15,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:15,277 INFO L495 AbstractCegarLoop]: Abstraction has 12854 states and 19509 transitions. [2023-12-20 03:39:15,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 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 03:39:15,277 INFO L276 IsEmpty]: Start isEmpty. Operand 12854 states and 19509 transitions. [2023-12-20 03:39:15,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 03:39:15,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:15,278 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] [2023-12-20 03:39:15,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 03:39:15,278 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:15,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:15,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1355234760, now seen corresponding path program 1 times [2023-12-20 03:39:15,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:15,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143559417] [2023-12-20 03:39:15,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:15,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:15,328 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 03:39:15,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:15,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143559417] [2023-12-20 03:39:15,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143559417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:15,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:15,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:39:15,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248391508] [2023-12-20 03:39:15,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:15,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:39:15,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:15,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:39:15,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:39:15,330 INFO L87 Difference]: Start difference. First operand 12854 states and 19509 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 03:39:15,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:15,400 INFO L93 Difference]: Finished difference Result 31868 states and 48377 transitions. [2023-12-20 03:39:15,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:39:15,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-20 03:39:15,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:15,420 INFO L225 Difference]: With dead ends: 31868 [2023-12-20 03:39:15,421 INFO L226 Difference]: Without dead ends: 19066 [2023-12-20 03:39:15,436 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 03:39:15,438 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 78 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:15,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 346 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:39:15,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19066 states. [2023-12-20 03:39:15,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19066 to 19064. [2023-12-20 03:39:15,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 19063 states have (on average 1.5069506373603316) internal successors, (28727), 19063 states have internal predecessors, (28727), 0 states have call successors, (0), 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 03:39:15,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 28727 transitions. [2023-12-20 03:39:15,741 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 28727 transitions. Word has length 94 [2023-12-20 03:39:15,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:15,741 INFO L495 AbstractCegarLoop]: Abstraction has 19064 states and 28727 transitions. [2023-12-20 03:39:15,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 03:39:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 28727 transitions. [2023-12-20 03:39:15,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 03:39:15,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:15,742 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] [2023-12-20 03:39:15,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 03:39:15,742 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:15,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:15,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1376237415, now seen corresponding path program 1 times [2023-12-20 03:39:15,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:15,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302509393] [2023-12-20 03:39:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:15,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:16,100 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 03:39:16,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:16,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302509393] [2023-12-20 03:39:16,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302509393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:16,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:16,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 03:39:16,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469009631] [2023-12-20 03:39:16,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:16,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:39:16,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:16,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:39:16,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:39:16,102 INFO L87 Difference]: Start difference. First operand 19064 states and 28727 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 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 03:39:16,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:16,474 INFO L93 Difference]: Finished difference Result 38076 states and 57401 transitions. [2023-12-20 03:39:16,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 03:39:16,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-20 03:39:16,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:16,498 INFO L225 Difference]: With dead ends: 38076 [2023-12-20 03:39:16,498 INFO L226 Difference]: Without dead ends: 19066 [2023-12-20 03:39:16,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-20 03:39:16,513 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 376 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:16,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 913 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:39:16,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19066 states. [2023-12-20 03:39:16,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19066 to 19064. [2023-12-20 03:39:16,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 19063 states have (on average 1.4968787703929076) internal successors, (28535), 19063 states have internal predecessors, (28535), 0 states have call successors, (0), 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 03:39:16,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 28535 transitions. [2023-12-20 03:39:16,775 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 28535 transitions. Word has length 94 [2023-12-20 03:39:16,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:16,775 INFO L495 AbstractCegarLoop]: Abstraction has 19064 states and 28535 transitions. [2023-12-20 03:39:16,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 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 03:39:16,776 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 28535 transitions. [2023-12-20 03:39:16,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 03:39:16,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:16,776 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] [2023-12-20 03:39:16,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 03:39:16,777 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:16,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:16,777 INFO L85 PathProgramCache]: Analyzing trace with hash -288222367, now seen corresponding path program 1 times [2023-12-20 03:39:16,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:16,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327316580] [2023-12-20 03:39:16,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:16,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:16,913 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 03:39:16,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:16,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327316580] [2023-12-20 03:39:16,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327316580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:16,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:16,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:39:16,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879790332] [2023-12-20 03:39:16,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:16,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:39:16,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:16,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:39:16,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:39:16,915 INFO L87 Difference]: Start difference. First operand 19064 states and 28535 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:17,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:17,046 INFO L93 Difference]: Finished difference Result 38074 states and 57016 transitions. [2023-12-20 03:39:17,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:39:17,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 03:39:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:17,069 INFO L225 Difference]: With dead ends: 38074 [2023-12-20 03:39:17,070 INFO L226 Difference]: Without dead ends: 19064 [2023-12-20 03:39:17,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:39:17,087 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 447 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:17,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 129 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:39:17,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19064 states. [2023-12-20 03:39:17,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19064 to 19064. [2023-12-20 03:39:17,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 19063 states have (on average 1.4868069034254838) internal successors, (28343), 19063 states have internal predecessors, (28343), 0 states have call successors, (0), 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 03:39:17,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 28343 transitions. [2023-12-20 03:39:17,260 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 28343 transitions. Word has length 95 [2023-12-20 03:39:17,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:17,260 INFO L495 AbstractCegarLoop]: Abstraction has 19064 states and 28343 transitions. [2023-12-20 03:39:17,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:17,261 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 28343 transitions. [2023-12-20 03:39:17,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 03:39:17,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:17,261 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] [2023-12-20 03:39:17,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 03:39:17,261 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:17,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:17,262 INFO L85 PathProgramCache]: Analyzing trace with hash 80048860, now seen corresponding path program 1 times [2023-12-20 03:39:17,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:17,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423924550] [2023-12-20 03:39:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:17,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:17,340 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 03:39:17,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:17,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423924550] [2023-12-20 03:39:17,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423924550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:17,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:17,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:39:17,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069607702] [2023-12-20 03:39:17,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:17,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:39:17,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:17,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:39:17,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:39:17,341 INFO L87 Difference]: Start difference. First operand 19064 states and 28343 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:17,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:17,464 INFO L93 Difference]: Finished difference Result 38074 states and 56632 transitions. [2023-12-20 03:39:17,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:39:17,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 03:39:17,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:17,488 INFO L225 Difference]: With dead ends: 38074 [2023-12-20 03:39:17,488 INFO L226 Difference]: Without dead ends: 19064 [2023-12-20 03:39:17,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:39:17,503 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 418 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:17,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 145 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:39:17,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19064 states. [2023-12-20 03:39:17,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19064 to 19064. [2023-12-20 03:39:17,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 19063 states have (on average 1.47673503645806) internal successors, (28151), 19063 states have internal predecessors, (28151), 0 states have call successors, (0), 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 03:39:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 28151 transitions. [2023-12-20 03:39:17,720 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 28151 transitions. Word has length 95 [2023-12-20 03:39:17,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:17,720 INFO L495 AbstractCegarLoop]: Abstraction has 19064 states and 28151 transitions. [2023-12-20 03:39:17,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:17,720 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 28151 transitions. [2023-12-20 03:39:17,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 03:39:17,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:17,721 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] [2023-12-20 03:39:17,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 03:39:17,721 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:17,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:17,722 INFO L85 PathProgramCache]: Analyzing trace with hash 208134167, now seen corresponding path program 1 times [2023-12-20 03:39:17,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:17,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244492138] [2023-12-20 03:39:17,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:17,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:17,803 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 03:39:17,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:17,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244492138] [2023-12-20 03:39:17,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244492138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:17,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:17,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:39:17,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559588271] [2023-12-20 03:39:17,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:17,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:39:17,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:17,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:39:17,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:39:17,805 INFO L87 Difference]: Start difference. First operand 19064 states and 28151 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:17,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:17,998 INFO L93 Difference]: Finished difference Result 38074 states and 56248 transitions. [2023-12-20 03:39:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:39:17,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 03:39:17,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:18,020 INFO L225 Difference]: With dead ends: 38074 [2023-12-20 03:39:18,020 INFO L226 Difference]: Without dead ends: 19064 [2023-12-20 03:39:18,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:39:18,026 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 389 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:18,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 161 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:39:18,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19064 states. [2023-12-20 03:39:18,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19064 to 19064. [2023-12-20 03:39:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 19063 states have (on average 1.4666631694906362) internal successors, (27959), 19063 states have internal predecessors, (27959), 0 states have call successors, (0), 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 03:39:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 27959 transitions. [2023-12-20 03:39:18,191 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 27959 transitions. Word has length 95 [2023-12-20 03:39:18,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:18,191 INFO L495 AbstractCegarLoop]: Abstraction has 19064 states and 27959 transitions. [2023-12-20 03:39:18,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 27959 transitions. [2023-12-20 03:39:18,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 03:39:18,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:18,192 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] [2023-12-20 03:39:18,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 03:39:18,192 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:18,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:18,192 INFO L85 PathProgramCache]: Analyzing trace with hash -321156334, now seen corresponding path program 1 times [2023-12-20 03:39:18,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:18,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944645075] [2023-12-20 03:39:18,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:18,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:18,294 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 03:39:18,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:18,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944645075] [2023-12-20 03:39:18,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944645075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:18,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:18,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:39:18,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427253782] [2023-12-20 03:39:18,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:18,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:39:18,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:18,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:39:18,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:39:18,295 INFO L87 Difference]: Start difference. First operand 19064 states and 27959 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:18,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:18,404 INFO L93 Difference]: Finished difference Result 38074 states and 55864 transitions. [2023-12-20 03:39:18,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:39:18,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 03:39:18,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:18,426 INFO L225 Difference]: With dead ends: 38074 [2023-12-20 03:39:18,427 INFO L226 Difference]: Without dead ends: 19064 [2023-12-20 03:39:18,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:39:18,441 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 425 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:18,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 137 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:39:18,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19064 states. [2023-12-20 03:39:18,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19064 to 19064. [2023-12-20 03:39:18,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 19063 states have (on average 1.4565913025232125) internal successors, (27767), 19063 states have internal predecessors, (27767), 0 states have call successors, (0), 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 03:39:18,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 27767 transitions. [2023-12-20 03:39:18,614 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 27767 transitions. Word has length 95 [2023-12-20 03:39:18,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:18,615 INFO L495 AbstractCegarLoop]: Abstraction has 19064 states and 27767 transitions. [2023-12-20 03:39:18,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:18,615 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 27767 transitions. [2023-12-20 03:39:18,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 03:39:18,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:18,615 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] [2023-12-20 03:39:18,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 03:39:18,616 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:18,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:18,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1084020041, now seen corresponding path program 1 times [2023-12-20 03:39:18,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:18,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856227481] [2023-12-20 03:39:18,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:18,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:18,678 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 03:39:18,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:18,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856227481] [2023-12-20 03:39:18,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856227481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:18,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:18,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:39:18,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49514095] [2023-12-20 03:39:18,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:18,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:39:18,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:18,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:39:18,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:39:18,680 INFO L87 Difference]: Start difference. First operand 19064 states and 27767 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:18,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:18,799 INFO L93 Difference]: Finished difference Result 38074 states and 55480 transitions. [2023-12-20 03:39:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:39:18,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 03:39:18,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:18,817 INFO L225 Difference]: With dead ends: 38074 [2023-12-20 03:39:18,817 INFO L226 Difference]: Without dead ends: 19064 [2023-12-20 03:39:18,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:39:18,831 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 448 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:18,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 121 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:39:18,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19064 states. [2023-12-20 03:39:19,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19064 to 19064. [2023-12-20 03:39:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 19063 states have (on average 1.4465194355557887) internal successors, (27575), 19063 states have internal predecessors, (27575), 0 states have call successors, (0), 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 03:39:19,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 27575 transitions. [2023-12-20 03:39:19,050 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 27575 transitions. Word has length 95 [2023-12-20 03:39:19,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:19,051 INFO L495 AbstractCegarLoop]: Abstraction has 19064 states and 27575 transitions. [2023-12-20 03:39:19,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:19,051 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 27575 transitions. [2023-12-20 03:39:19,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 03:39:19,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:19,051 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] [2023-12-20 03:39:19,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 03:39:19,052 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:19,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:19,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1469530140, now seen corresponding path program 1 times [2023-12-20 03:39:19,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:19,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100190235] [2023-12-20 03:39:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:19,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:19,180 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 03:39:19,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:19,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100190235] [2023-12-20 03:39:19,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100190235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:19,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:19,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:39:19,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7453291] [2023-12-20 03:39:19,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:19,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:39:19,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:19,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:39:19,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:39:19,181 INFO L87 Difference]: Start difference. First operand 19064 states and 27575 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:19,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:19,265 INFO L93 Difference]: Finished difference Result 34476 states and 49684 transitions. [2023-12-20 03:39:19,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:39:19,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 03:39:19,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:19,302 INFO L225 Difference]: With dead ends: 34476 [2023-12-20 03:39:19,302 INFO L226 Difference]: Without dead ends: 34474 [2023-12-20 03:39:19,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:39:19,313 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 228 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:19,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 788 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:39:19,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34474 states. [2023-12-20 03:39:19,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34474 to 19576. [2023-12-20 03:39:19,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19576 states, 19575 states have (on average 1.4315708812260537) internal successors, (28023), 19575 states have internal predecessors, (28023), 0 states have call successors, (0), 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 03:39:19,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19576 states to 19576 states and 28023 transitions. [2023-12-20 03:39:19,571 INFO L78 Accepts]: Start accepts. Automaton has 19576 states and 28023 transitions. Word has length 95 [2023-12-20 03:39:19,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:19,571 INFO L495 AbstractCegarLoop]: Abstraction has 19576 states and 28023 transitions. [2023-12-20 03:39:19,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:19,571 INFO L276 IsEmpty]: Start isEmpty. Operand 19576 states and 28023 transitions. [2023-12-20 03:39:19,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-20 03:39:19,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:19,577 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:19,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 03:39:19,577 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:19,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:19,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2086990711, now seen corresponding path program 1 times [2023-12-20 03:39:19,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:19,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739775348] [2023-12-20 03:39:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:19,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:39:19,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:19,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739775348] [2023-12-20 03:39:19,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739775348] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:19,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:19,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 03:39:19,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198999947] [2023-12-20 03:39:19,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:19,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:39:19,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:19,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:39:19,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:39:19,724 INFO L87 Difference]: Start difference. First operand 19576 states and 28023 transitions. Second operand has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:20,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:20,219 INFO L93 Difference]: Finished difference Result 153608 states and 219999 transitions. [2023-12-20 03:39:20,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 03:39:20,220 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2023-12-20 03:39:20,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:20,386 INFO L225 Difference]: With dead ends: 153608 [2023-12-20 03:39:20,386 INFO L226 Difference]: Without dead ends: 140294 [2023-12-20 03:39:20,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 03:39:20,429 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 2071 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:20,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2071 Valid, 1967 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:39:20,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140294 states. [2023-12-20 03:39:21,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140294 to 36024. [2023-12-20 03:39:21,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36024 states, 36023 states have (on average 1.4272825694695055) internal successors, (51415), 36023 states have internal predecessors, (51415), 0 states have call successors, (0), 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 03:39:21,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36024 states to 36024 states and 51415 transitions. [2023-12-20 03:39:21,620 INFO L78 Accepts]: Start accepts. Automaton has 36024 states and 51415 transitions. Word has length 129 [2023-12-20 03:39:21,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:21,621 INFO L495 AbstractCegarLoop]: Abstraction has 36024 states and 51415 transitions. [2023-12-20 03:39:21,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:39:21,621 INFO L276 IsEmpty]: Start isEmpty. Operand 36024 states and 51415 transitions. [2023-12-20 03:39:21,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-20 03:39:21,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:21,631 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:21,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 03:39:21,631 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:21,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:21,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1020070641, now seen corresponding path program 1 times [2023-12-20 03:39:21,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:21,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210875583] [2023-12-20 03:39:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:21,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 03:39:21,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:21,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210875583] [2023-12-20 03:39:21,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210875583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:21,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:21,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 03:39:21,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362085933] [2023-12-20 03:39:21,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:21,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:39:21,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:21,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:39:21,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:39:21,918 INFO L87 Difference]: Start difference. First operand 36024 states and 51415 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 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 03:39:22,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:22,352 INFO L93 Difference]: Finished difference Result 173128 states and 247839 transitions. [2023-12-20 03:39:22,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 03:39:22,352 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 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 129 [2023-12-20 03:39:22,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:22,651 INFO L225 Difference]: With dead ends: 173128 [2023-12-20 03:39:22,651 INFO L226 Difference]: Without dead ends: 153606 [2023-12-20 03:39:22,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 03:39:22,673 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 2072 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:22,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2072 Valid, 1900 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:39:22,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153606 states. [2023-12-20 03:39:23,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153606 to 62200. [2023-12-20 03:39:23,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62200 states, 62199 states have (on average 1.4244441228958664) internal successors, (88599), 62199 states have internal predecessors, (88599), 0 states have call successors, (0), 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 03:39:23,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62200 states to 62200 states and 88599 transitions. [2023-12-20 03:39:23,931 INFO L78 Accepts]: Start accepts. Automaton has 62200 states and 88599 transitions. Word has length 129 [2023-12-20 03:39:23,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:23,931 INFO L495 AbstractCegarLoop]: Abstraction has 62200 states and 88599 transitions. [2023-12-20 03:39:23,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 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 03:39:23,932 INFO L276 IsEmpty]: Start isEmpty. Operand 62200 states and 88599 transitions. [2023-12-20 03:39:23,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-20 03:39:23,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:23,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:23,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 03:39:23,939 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:23,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:23,940 INFO L85 PathProgramCache]: Analyzing trace with hash 78062119, now seen corresponding path program 1 times [2023-12-20 03:39:23,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:23,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94055063] [2023-12-20 03:39:23,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:23,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 03:39:24,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:24,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94055063] [2023-12-20 03:39:24,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94055063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:24,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:24,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 03:39:24,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201447414] [2023-12-20 03:39:24,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:24,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:39:24,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:24,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:39:24,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:39:24,087 INFO L87 Difference]: Start difference. First operand 62200 states and 88599 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 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 03:39:24,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:24,640 INFO L93 Difference]: Finished difference Result 192648 states and 275615 transitions. [2023-12-20 03:39:24,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 03:39:24,640 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 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 129 [2023-12-20 03:39:24,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:24,987 INFO L225 Difference]: With dead ends: 192648 [2023-12-20 03:39:24,987 INFO L226 Difference]: Without dead ends: 173126 [2023-12-20 03:39:25,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 03:39:25,024 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 2170 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:25,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2170 Valid, 2056 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:39:25,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173126 states. [2023-12-20 03:39:26,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173126 to 81720. [2023-12-20 03:39:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81720 states, 81719 states have (on average 1.4240874215298767) internal successors, (116375), 81719 states have internal predecessors, (116375), 0 states have call successors, (0), 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 03:39:26,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81720 states to 81720 states and 116375 transitions. [2023-12-20 03:39:26,373 INFO L78 Accepts]: Start accepts. Automaton has 81720 states and 116375 transitions. Word has length 129 [2023-12-20 03:39:26,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:26,373 INFO L495 AbstractCegarLoop]: Abstraction has 81720 states and 116375 transitions. [2023-12-20 03:39:26,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 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 03:39:26,373 INFO L276 IsEmpty]: Start isEmpty. Operand 81720 states and 116375 transitions. [2023-12-20 03:39:26,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-20 03:39:26,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:26,383 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:26,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 03:39:26,383 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:26,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:26,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1075883987, now seen corresponding path program 1 times [2023-12-20 03:39:26,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:26,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260856760] [2023-12-20 03:39:26,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:26,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 03:39:26,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:26,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260856760] [2023-12-20 03:39:26,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260856760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:26,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:26,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 03:39:26,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466627562] [2023-12-20 03:39:26,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:26,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:39:26,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:26,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:39:26,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:39:26,687 INFO L87 Difference]: Start difference. First operand 81720 states and 116375 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:39:27,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:27,399 INFO L93 Difference]: Finished difference Result 212168 states and 303391 transitions. [2023-12-20 03:39:27,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 03:39:27,400 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 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 129 [2023-12-20 03:39:27,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:27,608 INFO L225 Difference]: With dead ends: 212168 [2023-12-20 03:39:27,609 INFO L226 Difference]: Without dead ends: 192646 [2023-12-20 03:39:27,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 03:39:27,653 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1999 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:27,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1999 Valid, 2127 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:39:27,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192646 states. [2023-12-20 03:39:29,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192646 to 101240. [2023-12-20 03:39:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101240 states, 101239 states have (on average 1.4238682721085747) internal successors, (144151), 101239 states have internal predecessors, (144151), 0 states have call successors, (0), 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 03:39:29,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101240 states to 101240 states and 144151 transitions. [2023-12-20 03:39:29,330 INFO L78 Accepts]: Start accepts. Automaton has 101240 states and 144151 transitions. Word has length 129 [2023-12-20 03:39:29,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:29,331 INFO L495 AbstractCegarLoop]: Abstraction has 101240 states and 144151 transitions. [2023-12-20 03:39:29,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:39:29,331 INFO L276 IsEmpty]: Start isEmpty. Operand 101240 states and 144151 transitions. [2023-12-20 03:39:29,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-20 03:39:29,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:29,339 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:29,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 03:39:29,340 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:29,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:29,340 INFO L85 PathProgramCache]: Analyzing trace with hash -779838559, now seen corresponding path program 1 times [2023-12-20 03:39:29,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:29,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154569800] [2023-12-20 03:39:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:29,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 03:39:29,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:29,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154569800] [2023-12-20 03:39:29,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154569800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:29,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:29,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 03:39:29,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330932474] [2023-12-20 03:39:29,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:29,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:39:29,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:29,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:39:29,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:39:29,718 INFO L87 Difference]: Start difference. First operand 101240 states and 144151 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 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 03:39:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:30,538 INFO L93 Difference]: Finished difference Result 231688 states and 331167 transitions. [2023-12-20 03:39:30,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 03:39:30,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 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 129 [2023-12-20 03:39:30,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:30,817 INFO L225 Difference]: With dead ends: 231688 [2023-12-20 03:39:30,817 INFO L226 Difference]: Without dead ends: 212166 [2023-12-20 03:39:30,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 03:39:30,863 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1746 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1746 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:30,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1746 Valid, 2274 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:39:30,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212166 states. [2023-12-20 03:39:32,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212166 to 120760. [2023-12-20 03:39:32,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120760 states, 120759 states have (on average 1.4237199711822721) internal successors, (171927), 120759 states have internal predecessors, (171927), 0 states have call successors, (0), 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 03:39:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120760 states to 120760 states and 171927 transitions. [2023-12-20 03:39:32,857 INFO L78 Accepts]: Start accepts. Automaton has 120760 states and 171927 transitions. Word has length 129 [2023-12-20 03:39:32,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:32,857 INFO L495 AbstractCegarLoop]: Abstraction has 120760 states and 171927 transitions. [2023-12-20 03:39:32,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 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 03:39:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 120760 states and 171927 transitions. [2023-12-20 03:39:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-20 03:39:32,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:32,865 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:32,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 03:39:32,865 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:32,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:32,866 INFO L85 PathProgramCache]: Analyzing trace with hash 648658075, now seen corresponding path program 1 times [2023-12-20 03:39:32,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:32,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430470060] [2023-12-20 03:39:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:32,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 03:39:32,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:32,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430470060] [2023-12-20 03:39:32,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430470060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:32,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:32,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 03:39:32,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984201010] [2023-12-20 03:39:32,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:32,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:39:32,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:32,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:39:32,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:39:32,999 INFO L87 Difference]: Start difference. First operand 120760 states and 171927 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 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 03:39:33,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:33,779 INFO L93 Difference]: Finished difference Result 251208 states and 358943 transitions. [2023-12-20 03:39:33,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 03:39:33,779 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 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 129 [2023-12-20 03:39:33,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:34,067 INFO L225 Difference]: With dead ends: 251208 [2023-12-20 03:39:34,067 INFO L226 Difference]: Without dead ends: 231686 [2023-12-20 03:39:34,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 03:39:34,126 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1730 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:34,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 2305 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:39:34,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231686 states. [2023-12-20 03:39:36,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231686 to 140280. [2023-12-20 03:39:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140280 states, 140279 states have (on average 1.4236129427783204) internal successors, (199703), 140279 states have internal predecessors, (199703), 0 states have call successors, (0), 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 03:39:36,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140280 states to 140280 states and 199703 transitions. [2023-12-20 03:39:36,306 INFO L78 Accepts]: Start accepts. Automaton has 140280 states and 199703 transitions. Word has length 129 [2023-12-20 03:39:36,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:36,306 INFO L495 AbstractCegarLoop]: Abstraction has 140280 states and 199703 transitions. [2023-12-20 03:39:36,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 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 03:39:36,306 INFO L276 IsEmpty]: Start isEmpty. Operand 140280 states and 199703 transitions. [2023-12-20 03:39:36,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-20 03:39:36,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:36,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:36,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 03:39:36,316 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:36,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:36,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1670871787, now seen corresponding path program 1 times [2023-12-20 03:39:36,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:36,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89942032] [2023-12-20 03:39:36,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:36,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 03:39:36,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:36,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89942032] [2023-12-20 03:39:36,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89942032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:39:36,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:39:36,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 03:39:36,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374081378] [2023-12-20 03:39:36,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:39:36,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:39:36,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:36,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:39:36,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:39:36,698 INFO L87 Difference]: Start difference. First operand 140280 states and 199703 transitions. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 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 03:39:37,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:37,617 INFO L93 Difference]: Finished difference Result 270728 states and 386719 transitions. [2023-12-20 03:39:37,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 03:39:37,617 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 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 129 [2023-12-20 03:39:37,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:37,964 INFO L225 Difference]: With dead ends: 270728 [2023-12-20 03:39:37,964 INFO L226 Difference]: Without dead ends: 251206 [2023-12-20 03:39:38,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 03:39:38,017 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 1828 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1828 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:38,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1828 Valid, 2295 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:39:38,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251206 states. [2023-12-20 03:39:40,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251206 to 159800. [2023-12-20 03:39:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159800 states, 159799 states have (on average 1.4235320621530798) internal successors, (227479), 159799 states have internal predecessors, (227479), 0 states have call successors, (0), 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 03:39:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159800 states to 159800 states and 227479 transitions. [2023-12-20 03:39:40,356 INFO L78 Accepts]: Start accepts. Automaton has 159800 states and 227479 transitions. Word has length 129 [2023-12-20 03:39:40,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:39:40,356 INFO L495 AbstractCegarLoop]: Abstraction has 159800 states and 227479 transitions. [2023-12-20 03:39:40,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 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 03:39:40,356 INFO L276 IsEmpty]: Start isEmpty. Operand 159800 states and 227479 transitions. [2023-12-20 03:39:40,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-20 03:39:40,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:39:40,368 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:40,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 03:39:40,368 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:39:40,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:39:40,369 INFO L85 PathProgramCache]: Analyzing trace with hash 655202412, now seen corresponding path program 1 times [2023-12-20 03:39:40,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:39:40,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165752100] [2023-12-20 03:39:40,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:40,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:39:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:41,097 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:39:41,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:39:41,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165752100] [2023-12-20 03:39:41,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165752100] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:39:41,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625653575] [2023-12-20 03:39:41,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:39:41,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:39:41,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:39:41,114 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:39:41,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 03:39:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:39:41,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 03:39:41,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:39:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:39:41,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:39:41,754 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:39:41,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625653575] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:39:41,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:39:41,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-20 03:39:41,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747067647] [2023-12-20 03:39:41,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:39:41,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 03:39:41,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:39:41,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 03:39:41,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-20 03:39:41,756 INFO L87 Difference]: Start difference. First operand 159800 states and 227479 transitions. Second operand has 18 states, 18 states have (on average 20.944444444444443) internal successors, (377), 18 states have internal predecessors, (377), 0 states have call successors, (0), 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 03:39:53,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:39:53,529 INFO L93 Difference]: Finished difference Result 2097061 states and 2950020 transitions. [2023-12-20 03:39:53,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2023-12-20 03:39:53,529 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 20.944444444444443) internal successors, (377), 18 states have internal predecessors, (377), 0 states have call successors, (0), 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 130 [2023-12-20 03:39:53,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:39:57,914 INFO L225 Difference]: With dead ends: 2097061 [2023-12-20 03:39:57,915 INFO L226 Difference]: Without dead ends: 1937315 [2023-12-20 03:39:58,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13651 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5084, Invalid=25716, Unknown=0, NotChecked=0, Total=30800 [2023-12-20 03:39:58,305 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 11517 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 3088 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11517 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 3166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:39:58,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11517 Valid, 2957 Invalid, 3166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3088 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 03:39:59,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937315 states. [2023-12-20 03:40:12,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937315 to 814072. [2023-12-20 03:40:12,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814072 states, 814071 states have (on average 1.39548393199119) internal successors, (1136023), 814071 states have internal predecessors, (1136023), 0 states have call successors, (0), 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 03:40:14,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814072 states to 814072 states and 1136023 transitions. [2023-12-20 03:40:14,992 INFO L78 Accepts]: Start accepts. Automaton has 814072 states and 1136023 transitions. Word has length 130 [2023-12-20 03:40:14,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:40:14,992 INFO L495 AbstractCegarLoop]: Abstraction has 814072 states and 1136023 transitions. [2023-12-20 03:40:14,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.944444444444443) internal successors, (377), 18 states have internal predecessors, (377), 0 states have call successors, (0), 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 03:40:14,992 INFO L276 IsEmpty]: Start isEmpty. Operand 814072 states and 1136023 transitions. [2023-12-20 03:40:15,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 03:40:15,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:40:15,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:40:15,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 03:40:15,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-20 03:40:15,216 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:40:15,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:40:15,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1514106523, now seen corresponding path program 1 times [2023-12-20 03:40:15,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:40:15,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043567556] [2023-12-20 03:40:15,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:40:15,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:40:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:40:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:40:15,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:40:15,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043567556] [2023-12-20 03:40:15,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043567556] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:40:15,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304820605] [2023-12-20 03:40:15,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:40:15,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:40:15,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:40:15,476 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:40:15,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 03:40:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:40:15,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 03:40:15,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:40:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:40:16,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:40:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:40:16,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304820605] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:40:16,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:40:16,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-12-20 03:40:16,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960563668] [2023-12-20 03:40:16,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:40:16,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 03:40:16,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:40:16,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 03:40:16,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2023-12-20 03:40:16,949 INFO L87 Difference]: Start difference. First operand 814072 states and 1136023 transitions. Second operand has 23 states, 23 states have (on average 16.391304347826086) internal successors, (377), 22 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)