/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:08:27,268 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:08:27,346 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 13:08:27,351 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:08:27,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:08:27,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:08:27,375 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:08:27,376 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:08:27,376 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:08:27,379 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:08:27,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:08:27,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:08:27,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:08:27,381 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:08:27,381 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:08:27,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:08:27,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:08:27,381 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:08:27,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:08:27,382 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:08:27,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:08:27,382 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:08:27,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:08:27,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:08:27,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:08:27,383 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:08:27,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:08:27,383 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:08:27,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:08:27,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:08:27,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:08:27,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:08:27,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:08:27,385 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:08:27,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:08:27,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:08:27,385 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:08:27,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:08:27,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:08:27,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:08:27,386 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:08:27,386 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:08:27,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:08:27,386 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:08:27,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:08:27,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:08:27,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:08:27,587 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:08:27,588 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:08:27,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-12-21 13:08:28,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:08:28,887 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:08:28,888 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-12-21 13:08:28,899 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/561c929a4/04a34e05e54b4be0912608f31f0d2428/FLAGdd48674e4 [2023-12-21 13:08:28,915 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/561c929a4/04a34e05e54b4be0912608f31f0d2428 [2023-12-21 13:08:28,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:08:28,918 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:08:28,920 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:08:28,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:08:28,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:08:28,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:08:28" (1/1) ... [2023-12-21 13:08:28,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c210fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:08:28, skipping insertion in model container [2023-12-21 13:08:28,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:08:28" (1/1) ... [2023-12-21 13:08:28,989 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:08:29,242 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_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[12834,12847] [2023-12-21 13:08:29,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:08:29,299 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:08:29,344 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_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[12834,12847] [2023-12-21 13:08:29,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:08:29,402 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:08:29,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:08:29 WrapperNode [2023-12-21 13:08:29,403 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:08:29,404 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:08:29,404 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:08:29,404 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:08:29,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:08:29" (1/1) ... [2023-12-21 13:08:29,429 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:08:29" (1/1) ... [2023-12-21 13:08:29,483 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1347 [2023-12-21 13:08:29,484 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:08:29,484 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:08:29,484 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:08:29,484 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:08:29,500 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:08:29" (1/1) ... [2023-12-21 13:08:29,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:08:29" (1/1) ... [2023-12-21 13:08:29,510 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:08:29" (1/1) ... [2023-12-21 13:08:29,534 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]. [2023-12-21 13:08:29,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:08:29" (1/1) ... [2023-12-21 13:08:29,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:08:29" (1/1) ... [2023-12-21 13:08:29,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:08:29" (1/1) ... [2023-12-21 13:08:29,576 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:08:29" (1/1) ... [2023-12-21 13:08:29,580 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:08:29" (1/1) ... [2023-12-21 13:08:29,583 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:08:29" (1/1) ... [2023-12-21 13:08:29,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:08:29,596 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:08:29,596 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:08:29,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:08:29,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:08:29" (1/1) ... [2023-12-21 13:08:29,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:08:29,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:08:29,620 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) [2023-12-21 13:08:29,628 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 [2023-12-21 13:08:29,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:08:29,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:08:29,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:08:29,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:08:29,762 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:08:29,763 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:08:30,609 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:08:30,653 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:08:30,653 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:08:30,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:08:30 BoogieIcfgContainer [2023-12-21 13:08:30,654 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:08:30,655 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:08:30,655 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:08:30,658 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:08:30,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:08:28" (1/3) ... [2023-12-21 13:08:30,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d1e20a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:08:30, skipping insertion in model container [2023-12-21 13:08:30,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:08:29" (2/3) ... [2023-12-21 13:08:30,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d1e20a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:08:30, skipping insertion in model container [2023-12-21 13:08:30,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:08:30" (3/3) ... [2023-12-21 13:08:30,660 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-12-21 13:08:30,673 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:08:30,673 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 13:08:30,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:08:30,736 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;@77eeafc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:08:30,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 13:08:30,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 317 states, 315 states have (on average 1.8095238095238095) internal successors, (570), 316 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:30,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 13:08:30,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:30,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:30,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:30,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:30,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1414953681, now seen corresponding path program 1 times [2023-12-21 13:08:30,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:30,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796603293] [2023-12-21 13:08:30,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:30,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:08:31,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:31,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796603293] [2023-12-21 13:08:31,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796603293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:31,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:31,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:08:31,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929871248] [2023-12-21 13:08:31,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:31,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:08:31,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:31,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:08:31,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:08:31,242 INFO L87 Difference]: Start difference. First operand has 317 states, 315 states have (on average 1.8095238095238095) internal successors, (570), 316 states have internal predecessors, (570), 0 states have call successors, (0), 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 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:31,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:31,353 INFO L93 Difference]: Finished difference Result 564 states and 987 transitions. [2023-12-21 13:08:31,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:08:31,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2023-12-21 13:08:31,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:31,365 INFO L225 Difference]: With dead ends: 564 [2023-12-21 13:08:31,365 INFO L226 Difference]: Without dead ends: 431 [2023-12-21 13:08:31,367 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 [2023-12-21 13:08:31,387 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 221 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:08:31,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1210 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:08:31,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-12-21 13:08:31,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 429. [2023-12-21 13:08:31,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.6658878504672898) internal successors, (713), 428 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:31,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 713 transitions. [2023-12-21 13:08:31,435 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 713 transitions. Word has length 110 [2023-12-21 13:08:31,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:31,436 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 713 transitions. [2023-12-21 13:08:31,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:31,436 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 713 transitions. [2023-12-21 13:08:31,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 13:08:31,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:31,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:31,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:08:31,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:31,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:31,439 INFO L85 PathProgramCache]: Analyzing trace with hash 512229007, now seen corresponding path program 1 times [2023-12-21 13:08:31,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:31,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552596531] [2023-12-21 13:08:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:31,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:31,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:08:31,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:31,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552596531] [2023-12-21 13:08:31,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552596531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:31,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:31,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:08:31,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543882794] [2023-12-21 13:08:31,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:31,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:08:31,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:31,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:08:31,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:08:31,609 INFO L87 Difference]: Start difference. First operand 429 states and 713 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:31,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:31,629 INFO L93 Difference]: Finished difference Result 659 states and 1104 transitions. [2023-12-21 13:08:31,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:08:31,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-21 13:08:31,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:31,632 INFO L225 Difference]: With dead ends: 659 [2023-12-21 13:08:31,632 INFO L226 Difference]: Without dead ends: 532 [2023-12-21 13:08:31,633 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 [2023-12-21 13:08:31,634 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 196 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1171 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 [2023-12-21 13:08:31,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 1171 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:08:31,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2023-12-21 13:08:31,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 530. [2023-12-21 13:08:31,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 1.6729678638941399) internal successors, (885), 529 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:31,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 885 transitions. [2023-12-21 13:08:31,655 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 885 transitions. Word has length 113 [2023-12-21 13:08:31,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:31,656 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 885 transitions. [2023-12-21 13:08:31,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:31,656 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 885 transitions. [2023-12-21 13:08:31,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 13:08:31,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:31,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:31,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:08:31,658 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:31,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:31,658 INFO L85 PathProgramCache]: Analyzing trace with hash 850243325, now seen corresponding path program 1 times [2023-12-21 13:08:31,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:31,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452021466] [2023-12-21 13:08:31,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:31,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:08:31,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:31,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452021466] [2023-12-21 13:08:31,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452021466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:31,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:31,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:08:31,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483824691] [2023-12-21 13:08:31,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:31,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:08:31,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:31,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:08:31,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:08:31,791 INFO L87 Difference]: Start difference. First operand 530 states and 885 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:31,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:31,810 INFO L93 Difference]: Finished difference Result 1183 states and 1984 transitions. [2023-12-21 13:08:31,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:08:31,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-21 13:08:31,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:31,814 INFO L225 Difference]: With dead ends: 1183 [2023-12-21 13:08:31,814 INFO L226 Difference]: Without dead ends: 843 [2023-12-21 13:08:31,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:08:31,820 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 189 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:08:31,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1149 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:08:31,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2023-12-21 13:08:31,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2023-12-21 13:08:31,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 1.6726190476190477) internal successors, (1405), 840 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:31,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1405 transitions. [2023-12-21 13:08:31,845 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1405 transitions. Word has length 113 [2023-12-21 13:08:31,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:31,848 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1405 transitions. [2023-12-21 13:08:31,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:31,848 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1405 transitions. [2023-12-21 13:08:31,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-21 13:08:31,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:31,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:31,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:08:31,850 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:31,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:31,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1504406523, now seen corresponding path program 1 times [2023-12-21 13:08:31,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:31,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141323001] [2023-12-21 13:08:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:31,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:08:31,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:31,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141323001] [2023-12-21 13:08:31,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141323001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:31,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:31,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:08:31,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372990421] [2023-12-21 13:08:31,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:31,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:08:31,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:31,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:08:31,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:08:31,971 INFO L87 Difference]: Start difference. First operand 841 states and 1405 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:31,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:31,992 INFO L93 Difference]: Finished difference Result 1461 states and 2451 transitions. [2023-12-21 13:08:31,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:08:31,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2023-12-21 13:08:31,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:31,996 INFO L225 Difference]: With dead ends: 1461 [2023-12-21 13:08:31,997 INFO L226 Difference]: Without dead ends: 1121 [2023-12-21 13:08:31,999 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 [2023-12-21 13:08:32,002 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 190 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1144 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 [2023-12-21 13:08:32,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 1144 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:08:32,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2023-12-21 13:08:32,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1119. [2023-12-21 13:08:32,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 1.6735241502683362) internal successors, (1871), 1118 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:32,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1871 transitions. [2023-12-21 13:08:32,021 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1871 transitions. Word has length 116 [2023-12-21 13:08:32,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:32,021 INFO L495 AbstractCegarLoop]: Abstraction has 1119 states and 1871 transitions. [2023-12-21 13:08:32,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:32,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1871 transitions. [2023-12-21 13:08:32,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-21 13:08:32,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:32,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:32,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:08:32,022 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:32,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:32,023 INFO L85 PathProgramCache]: Analyzing trace with hash 879320951, now seen corresponding path program 1 times [2023-12-21 13:08:32,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:32,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913821799] [2023-12-21 13:08:32,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:32,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:08:32,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:32,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913821799] [2023-12-21 13:08:32,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913821799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:32,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:32,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:08:32,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626591939] [2023-12-21 13:08:32,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:32,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:08:32,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:32,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:08:32,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:08:32,113 INFO L87 Difference]: Start difference. First operand 1119 states and 1871 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:32,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:32,137 INFO L93 Difference]: Finished difference Result 2860 states and 4786 transitions. [2023-12-21 13:08:32,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:08:32,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2023-12-21 13:08:32,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:32,144 INFO L225 Difference]: With dead ends: 2860 [2023-12-21 13:08:32,144 INFO L226 Difference]: Without dead ends: 1949 [2023-12-21 13:08:32,145 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 [2023-12-21 13:08:32,146 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 183 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:08:32,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 1123 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:08:32,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2023-12-21 13:08:32,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1947. [2023-12-21 13:08:32,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1947 states, 1946 states have (on average 1.6659815005138747) internal successors, (3242), 1946 states have internal predecessors, (3242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:32,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 3242 transitions. [2023-12-21 13:08:32,178 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 3242 transitions. Word has length 116 [2023-12-21 13:08:32,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:32,178 INFO L495 AbstractCegarLoop]: Abstraction has 1947 states and 3242 transitions. [2023-12-21 13:08:32,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:32,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 3242 transitions. [2023-12-21 13:08:32,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 13:08:32,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:32,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:32,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:08:32,180 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:32,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:32,181 INFO L85 PathProgramCache]: Analyzing trace with hash 200690089, now seen corresponding path program 1 times [2023-12-21 13:08:32,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:32,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013007027] [2023-12-21 13:08:32,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:32,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:08:32,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:32,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013007027] [2023-12-21 13:08:32,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013007027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:32,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:32,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:08:32,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599772176] [2023-12-21 13:08:32,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:32,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:08:32,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:32,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:08:32,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:08:32,285 INFO L87 Difference]: Start difference. First operand 1947 states and 3242 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:32,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:32,311 INFO L93 Difference]: Finished difference Result 3553 states and 5942 transitions. [2023-12-21 13:08:32,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:08:32,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-12-21 13:08:32,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:32,320 INFO L225 Difference]: With dead ends: 3553 [2023-12-21 13:08:32,321 INFO L226 Difference]: Without dead ends: 2642 [2023-12-21 13:08:32,323 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 [2023-12-21 13:08:32,324 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 184 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1117 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 [2023-12-21 13:08:32,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1117 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:08:32,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2023-12-21 13:08:32,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2640. [2023-12-21 13:08:32,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 2639 states have (on average 1.6661614247821144) internal successors, (4397), 2639 states have internal predecessors, (4397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 4397 transitions. [2023-12-21 13:08:32,378 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 4397 transitions. Word has length 119 [2023-12-21 13:08:32,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:32,378 INFO L495 AbstractCegarLoop]: Abstraction has 2640 states and 4397 transitions. [2023-12-21 13:08:32,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:32,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 4397 transitions. [2023-12-21 13:08:32,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 13:08:32,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:32,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:32,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:08:32,380 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:32,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:32,380 INFO L85 PathProgramCache]: Analyzing trace with hash -582704553, now seen corresponding path program 1 times [2023-12-21 13:08:32,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:32,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834334246] [2023-12-21 13:08:32,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:32,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:08:32,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:32,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834334246] [2023-12-21 13:08:32,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834334246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:32,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:32,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:08:32,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424095934] [2023-12-21 13:08:32,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:32,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:08:32,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:32,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:08:32,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:08:32,467 INFO L87 Difference]: Start difference. First operand 2640 states and 4397 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:32,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:32,505 INFO L93 Difference]: Finished difference Result 7225 states and 12004 transitions. [2023-12-21 13:08:32,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:08:32,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-12-21 13:08:32,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:32,519 INFO L225 Difference]: With dead ends: 7225 [2023-12-21 13:08:32,520 INFO L226 Difference]: Without dead ends: 4811 [2023-12-21 13:08:32,526 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 [2023-12-21 13:08:32,527 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 177 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:08:32,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1020 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:08:32,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4811 states. [2023-12-21 13:08:32,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4811 to 4809. [2023-12-21 13:08:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 4808 states have (on average 1.6520382695507487) internal successors, (7943), 4808 states have internal predecessors, (7943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:32,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 7943 transitions. [2023-12-21 13:08:32,625 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 7943 transitions. Word has length 119 [2023-12-21 13:08:32,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:32,626 INFO L495 AbstractCegarLoop]: Abstraction has 4809 states and 7943 transitions. [2023-12-21 13:08:32,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:32,626 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 7943 transitions. [2023-12-21 13:08:32,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 13:08:32,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:32,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:32,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:08:32,627 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:32,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:32,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1787106275, now seen corresponding path program 1 times [2023-12-21 13:08:32,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:32,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361329480] [2023-12-21 13:08:32,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:32,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:08:32,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:32,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361329480] [2023-12-21 13:08:32,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361329480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:32,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:32,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:08:32,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524149292] [2023-12-21 13:08:32,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:32,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:08:32,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:32,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:08:32,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:08:32,750 INFO L87 Difference]: Start difference. First operand 4809 states and 7943 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 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) [2023-12-21 13:08:33,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:33,115 INFO L93 Difference]: Finished difference Result 29770 states and 49576 transitions. [2023-12-21 13:08:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:08:33,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 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 122 [2023-12-21 13:08:33,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:33,177 INFO L225 Difference]: With dead ends: 29770 [2023-12-21 13:08:33,178 INFO L226 Difference]: Without dead ends: 25187 [2023-12-21 13:08:33,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:08:33,188 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 2298 mSDsluCounter, 3058 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2298 SdHoareTripleChecker+Valid, 3570 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:08:33,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2298 Valid, 3570 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:08:33,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25187 states. [2023-12-21 13:08:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25187 to 9235. [2023-12-21 13:08:33,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9235 states, 9234 states have (on average 1.6472817847086854) internal successors, (15211), 9234 states have internal predecessors, (15211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:33,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9235 states to 9235 states and 15211 transitions. [2023-12-21 13:08:33,524 INFO L78 Accepts]: Start accepts. Automaton has 9235 states and 15211 transitions. Word has length 122 [2023-12-21 13:08:33,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:33,525 INFO L495 AbstractCegarLoop]: Abstraction has 9235 states and 15211 transitions. [2023-12-21 13:08:33,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 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) [2023-12-21 13:08:33,525 INFO L276 IsEmpty]: Start isEmpty. Operand 9235 states and 15211 transitions. [2023-12-21 13:08:33,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 13:08:33,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:33,526 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:33,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:08:33,526 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:33,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:33,526 INFO L85 PathProgramCache]: Analyzing trace with hash 367218292, now seen corresponding path program 1 times [2023-12-21 13:08:33,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:33,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315148106] [2023-12-21 13:08:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:33,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:33,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:08:33,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:33,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315148106] [2023-12-21 13:08:33,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315148106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:33,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:33,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:08:33,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164351001] [2023-12-21 13:08:33,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:33,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:08:33,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:33,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:08:33,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:08:33,627 INFO L87 Difference]: Start difference. First operand 9235 states and 15211 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 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) [2023-12-21 13:08:33,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:33,766 INFO L93 Difference]: Finished difference Result 30028 states and 49738 transitions. [2023-12-21 13:08:33,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:08:33,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 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 123 [2023-12-21 13:08:33,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:33,803 INFO L225 Difference]: With dead ends: 30028 [2023-12-21 13:08:33,803 INFO L226 Difference]: Without dead ends: 21019 [2023-12-21 13:08:33,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:08:33,821 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 624 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:08:33,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1511 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:08:33,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21019 states. [2023-12-21 13:08:34,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21019 to 15090. [2023-12-21 13:08:34,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15090 states, 15089 states have (on average 1.648551925243555) internal successors, (24875), 15089 states have internal predecessors, (24875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:34,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15090 states to 15090 states and 24875 transitions. [2023-12-21 13:08:34,218 INFO L78 Accepts]: Start accepts. Automaton has 15090 states and 24875 transitions. Word has length 123 [2023-12-21 13:08:34,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:34,219 INFO L495 AbstractCegarLoop]: Abstraction has 15090 states and 24875 transitions. [2023-12-21 13:08:34,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 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) [2023-12-21 13:08:34,219 INFO L276 IsEmpty]: Start isEmpty. Operand 15090 states and 24875 transitions. [2023-12-21 13:08:34,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 13:08:34,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:34,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:34,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:08:34,221 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:34,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:34,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1011001031, now seen corresponding path program 1 times [2023-12-21 13:08:34,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:34,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539263045] [2023-12-21 13:08:34,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:34,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:08:34,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:34,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539263045] [2023-12-21 13:08:34,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539263045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:34,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:34,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:08:34,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028961766] [2023-12-21 13:08:34,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:34,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:08:34,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:34,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:08:34,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:08:34,318 INFO L87 Difference]: Start difference. First operand 15090 states and 24875 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 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) [2023-12-21 13:08:34,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:34,444 INFO L93 Difference]: Finished difference Result 28696 states and 47477 transitions. [2023-12-21 13:08:34,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:08:34,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 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 123 [2023-12-21 13:08:34,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:34,482 INFO L225 Difference]: With dead ends: 28696 [2023-12-21 13:08:34,482 INFO L226 Difference]: Without dead ends: 20732 [2023-12-21 13:08:34,497 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 [2023-12-21 13:08:34,498 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 178 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1101 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 [2023-12-21 13:08:34,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1101 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:08:34,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20732 states. [2023-12-21 13:08:34,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20732 to 20730. [2023-12-21 13:08:34,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20730 states, 20729 states have (on average 1.645906700757393) internal successors, (34118), 20729 states have internal predecessors, (34118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:34,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20730 states to 20730 states and 34118 transitions. [2023-12-21 13:08:34,843 INFO L78 Accepts]: Start accepts. Automaton has 20730 states and 34118 transitions. Word has length 123 [2023-12-21 13:08:34,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:34,844 INFO L495 AbstractCegarLoop]: Abstraction has 20730 states and 34118 transitions. [2023-12-21 13:08:34,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 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) [2023-12-21 13:08:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 20730 states and 34118 transitions. [2023-12-21 13:08:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 13:08:34,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:34,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:34,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:08:34,845 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:34,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:34,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1563638844, now seen corresponding path program 1 times [2023-12-21 13:08:34,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:34,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709747344] [2023-12-21 13:08:34,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:34,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:34,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:08:34,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:34,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709747344] [2023-12-21 13:08:34,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709747344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:34,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:34,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:08:34,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478287443] [2023-12-21 13:08:34,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:34,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:08:34,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:34,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:08:34,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:08:34,949 INFO L87 Difference]: Start difference. First operand 20730 states and 34118 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 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) [2023-12-21 13:08:35,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:35,254 INFO L93 Difference]: Finished difference Result 67428 states and 111257 transitions. [2023-12-21 13:08:35,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:08:35,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 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 124 [2023-12-21 13:08:35,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:35,356 INFO L225 Difference]: With dead ends: 67428 [2023-12-21 13:08:35,356 INFO L226 Difference]: Without dead ends: 46942 [2023-12-21 13:08:35,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:08:35,392 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 622 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:08:35,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1615 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:08:35,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46942 states. [2023-12-21 13:08:35,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46942 to 33747. [2023-12-21 13:08:35,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33747 states, 33746 states have (on average 1.6413204527944052) internal successors, (55388), 33746 states have internal predecessors, (55388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33747 states to 33747 states and 55388 transitions. [2023-12-21 13:08:36,030 INFO L78 Accepts]: Start accepts. Automaton has 33747 states and 55388 transitions. Word has length 124 [2023-12-21 13:08:36,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:36,031 INFO L495 AbstractCegarLoop]: Abstraction has 33747 states and 55388 transitions. [2023-12-21 13:08:36,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 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) [2023-12-21 13:08:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 33747 states and 55388 transitions. [2023-12-21 13:08:36,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 13:08:36,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:36,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:36,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:08:36,032 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:36,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:36,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1286109893, now seen corresponding path program 1 times [2023-12-21 13:08:36,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:36,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918630374] [2023-12-21 13:08:36,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:36,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:36,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:08:36,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:36,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918630374] [2023-12-21 13:08:36,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918630374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:36,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:36,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:08:36,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920598577] [2023-12-21 13:08:36,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:36,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:08:36,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:36,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:08:36,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:08:36,125 INFO L87 Difference]: Start difference. First operand 33747 states and 55388 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 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) [2023-12-21 13:08:36,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:36,552 INFO L93 Difference]: Finished difference Result 109322 states and 179873 transitions. [2023-12-21 13:08:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:08:36,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 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 125 [2023-12-21 13:08:36,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:36,819 INFO L225 Difference]: With dead ends: 109322 [2023-12-21 13:08:36,820 INFO L226 Difference]: Without dead ends: 75819 [2023-12-21 13:08:36,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:08:36,859 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 620 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:08:36,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 1656 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:08:36,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75819 states. [2023-12-21 13:08:37,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75819 to 54640. [2023-12-21 13:08:37,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54640 states, 54639 states have (on average 1.636669777997401) internal successors, (89426), 54639 states have internal predecessors, (89426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:37,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54640 states to 54640 states and 89426 transitions. [2023-12-21 13:08:37,779 INFO L78 Accepts]: Start accepts. Automaton has 54640 states and 89426 transitions. Word has length 125 [2023-12-21 13:08:37,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:37,779 INFO L495 AbstractCegarLoop]: Abstraction has 54640 states and 89426 transitions. [2023-12-21 13:08:37,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 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) [2023-12-21 13:08:37,779 INFO L276 IsEmpty]: Start isEmpty. Operand 54640 states and 89426 transitions. [2023-12-21 13:08:37,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-21 13:08:37,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:37,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:37,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:08:37,781 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:37,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:37,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1268088981, now seen corresponding path program 1 times [2023-12-21 13:08:37,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:37,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975387215] [2023-12-21 13:08:37,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:37,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:08:37,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:37,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975387215] [2023-12-21 13:08:37,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975387215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:37,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:37,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:08:37,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731134115] [2023-12-21 13:08:37,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:37,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:08:37,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:37,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:08:37,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:08:37,870 INFO L87 Difference]: Start difference. First operand 54640 states and 89426 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 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) [2023-12-21 13:08:38,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:38,652 INFO L93 Difference]: Finished difference Result 175048 states and 287185 transitions. [2023-12-21 13:08:38,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:08:38,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 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 126 [2023-12-21 13:08:38,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:38,943 INFO L225 Difference]: With dead ends: 175048 [2023-12-21 13:08:38,943 INFO L226 Difference]: Without dead ends: 120652 [2023-12-21 13:08:39,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:08:39,015 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 618 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:08:39,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 1720 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:08:39,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120652 states. [2023-12-21 13:08:40,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120652 to 87421. [2023-12-21 13:08:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87421 states, 87420 states have (on average 1.6320292839167239) internal successors, (142672), 87420 states have internal predecessors, (142672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87421 states to 87421 states and 142672 transitions. [2023-12-21 13:08:40,633 INFO L78 Accepts]: Start accepts. Automaton has 87421 states and 142672 transitions. Word has length 126 [2023-12-21 13:08:40,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:40,633 INFO L495 AbstractCegarLoop]: Abstraction has 87421 states and 142672 transitions. [2023-12-21 13:08:40,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 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) [2023-12-21 13:08:40,633 INFO L276 IsEmpty]: Start isEmpty. Operand 87421 states and 142672 transitions. [2023-12-21 13:08:40,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-21 13:08:40,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:40,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:40,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:08:40,635 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:40,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:40,635 INFO L85 PathProgramCache]: Analyzing trace with hash -380104196, now seen corresponding path program 1 times [2023-12-21 13:08:40,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:40,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187753659] [2023-12-21 13:08:40,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:40,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:08:40,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:40,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187753659] [2023-12-21 13:08:40,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187753659] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:40,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:40,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:08:40,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733004929] [2023-12-21 13:08:40,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:40,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:08:40,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:40,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:08:40,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:08:40,846 INFO L87 Difference]: Start difference. First operand 87421 states and 142672 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 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) [2023-12-21 13:08:41,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:41,741 INFO L93 Difference]: Finished difference Result 174600 states and 284954 transitions. [2023-12-21 13:08:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:08:41,745 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 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 128 [2023-12-21 13:08:41,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:41,907 INFO L225 Difference]: With dead ends: 174600 [2023-12-21 13:08:41,907 INFO L226 Difference]: Without dead ends: 87423 [2023-12-21 13:08:42,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:08:42,002 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 357 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:08:42,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 1990 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:08:42,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87423 states. [2023-12-21 13:08:42,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87423 to 87421. [2023-12-21 13:08:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87421 states, 87420 states have (on average 1.6248798901853123) internal successors, (142047), 87420 states have internal predecessors, (142047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87421 states to 87421 states and 142047 transitions. [2023-12-21 13:08:43,151 INFO L78 Accepts]: Start accepts. Automaton has 87421 states and 142047 transitions. Word has length 128 [2023-12-21 13:08:43,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:43,151 INFO L495 AbstractCegarLoop]: Abstraction has 87421 states and 142047 transitions. [2023-12-21 13:08:43,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 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) [2023-12-21 13:08:43,151 INFO L276 IsEmpty]: Start isEmpty. Operand 87421 states and 142047 transitions. [2023-12-21 13:08:43,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 13:08:43,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:43,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:43,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:08:43,152 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:43,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash 96287021, now seen corresponding path program 1 times [2023-12-21 13:08:43,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:43,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524651975] [2023-12-21 13:08:43,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:43,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:08:43,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:43,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524651975] [2023-12-21 13:08:43,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524651975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:43,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:43,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:08:43,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866132652] [2023-12-21 13:08:43,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:43,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:08:43,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:43,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:08:43,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:08:43,368 INFO L87 Difference]: Start difference. First operand 87421 states and 142047 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:44,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:44,492 INFO L93 Difference]: Finished difference Result 255494 states and 415622 transitions. [2023-12-21 13:08:44,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:08:44,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2023-12-21 13:08:44,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:44,793 INFO L225 Difference]: With dead ends: 255494 [2023-12-21 13:08:44,793 INFO L226 Difference]: Without dead ends: 168317 [2023-12-21 13:08:44,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:08:44,869 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 178 mSDsluCounter, 1992 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:08:44,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 2505 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:08:45,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168317 states. [2023-12-21 13:08:46,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168317 to 168315. [2023-12-21 13:08:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168315 states, 168314 states have (on average 1.6157182409068764) internal successors, (271948), 168314 states have internal predecessors, (271948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:47,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168315 states to 168315 states and 271948 transitions. [2023-12-21 13:08:47,181 INFO L78 Accepts]: Start accepts. Automaton has 168315 states and 271948 transitions. Word has length 131 [2023-12-21 13:08:47,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:47,182 INFO L495 AbstractCegarLoop]: Abstraction has 168315 states and 271948 transitions. [2023-12-21 13:08:47,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:47,182 INFO L276 IsEmpty]: Start isEmpty. Operand 168315 states and 271948 transitions. [2023-12-21 13:08:47,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 13:08:47,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:47,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:47,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:08:47,183 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:47,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:47,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1311978759, now seen corresponding path program 1 times [2023-12-21 13:08:47,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:47,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011605405] [2023-12-21 13:08:47,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:47,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:08:47,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:47,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011605405] [2023-12-21 13:08:47,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011605405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:47,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:47,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:08:47,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457157528] [2023-12-21 13:08:47,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:47,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:08:47,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:47,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:08:47,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:08:47,475 INFO L87 Difference]: Start difference. First operand 168315 states and 271948 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:48,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:48,942 INFO L93 Difference]: Finished difference Result 320232 states and 515632 transitions. [2023-12-21 13:08:48,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:08:48,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2023-12-21 13:08:48,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:49,567 INFO L225 Difference]: With dead ends: 320232 [2023-12-21 13:08:49,567 INFO L226 Difference]: Without dead ends: 320230 [2023-12-21 13:08:49,651 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 [2023-12-21 13:08:49,652 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 400 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:08:49,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 2327 Invalid, 33 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:08:49,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320230 states. [2023-12-21 13:08:52,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320230 to 172187. [2023-12-21 13:08:52,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172187 states, 172186 states have (on average 1.6017155866330597) internal successors, (275793), 172186 states have internal predecessors, (275793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172187 states to 172187 states and 275793 transitions. [2023-12-21 13:08:53,022 INFO L78 Accepts]: Start accepts. Automaton has 172187 states and 275793 transitions. Word has length 132 [2023-12-21 13:08:53,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:08:53,023 INFO L495 AbstractCegarLoop]: Abstraction has 172187 states and 275793 transitions. [2023-12-21 13:08:53,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:53,023 INFO L276 IsEmpty]: Start isEmpty. Operand 172187 states and 275793 transitions. [2023-12-21 13:08:53,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 13:08:53,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:08:53,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:08:53,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:08:53,030 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:08:53,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:08:53,030 INFO L85 PathProgramCache]: Analyzing trace with hash 695692182, now seen corresponding path program 1 times [2023-12-21 13:08:53,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:08:53,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124750726] [2023-12-21 13:08:53,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:08:53,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:08:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:08:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 13:08:53,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:08:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124750726] [2023-12-21 13:08:53,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124750726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:08:53,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:08:53,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:08:53,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851732877] [2023-12-21 13:08:53,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:08:53,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:08:53,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:08:53,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:08:53,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:08:53,166 INFO L87 Difference]: Start difference. First operand 172187 states and 275793 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:08:54,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:08:54,980 INFO L93 Difference]: Finished difference Result 469213 states and 754046 transitions. [2023-12-21 13:08:54,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:08:54,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 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 162 [2023-12-21 13:08:54,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:08:55,932 INFO L225 Difference]: With dead ends: 469213 [2023-12-21 13:08:55,932 INFO L226 Difference]: Without dead ends: 393561 [2023-12-21 13:08:56,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:08:56,375 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 1390 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:08:56,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 2645 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:08:56,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393561 states. [2023-12-21 13:08:59,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393561 to 276619. [2023-12-21 13:09:00,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276619 states, 276618 states have (on average 1.6000947154559717) internal successors, (442615), 276618 states have internal predecessors, (442615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:09:00,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276619 states to 276619 states and 442615 transitions. [2023-12-21 13:09:00,972 INFO L78 Accepts]: Start accepts. Automaton has 276619 states and 442615 transitions. Word has length 162 [2023-12-21 13:09:00,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:09:00,972 INFO L495 AbstractCegarLoop]: Abstraction has 276619 states and 442615 transitions. [2023-12-21 13:09:00,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:09:00,972 INFO L276 IsEmpty]: Start isEmpty. Operand 276619 states and 442615 transitions. [2023-12-21 13:09:00,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 13:09:00,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:09:00,978 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:09:00,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:09:00,979 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:09:00,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:09:00,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1890482380, now seen corresponding path program 1 times [2023-12-21 13:09:00,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:09:00,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254237687] [2023-12-21 13:09:00,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:09:00,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:09:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:09:01,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 13:09:01,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:09:01,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254237687] [2023-12-21 13:09:01,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254237687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:09:01,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:09:01,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:09:01,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40777555] [2023-12-21 13:09:01,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:09:01,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:09:01,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:09:01,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:09:01,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:09:01,132 INFO L87 Difference]: Start difference. First operand 276619 states and 442615 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:09:03,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:09:03,151 INFO L93 Difference]: Finished difference Result 517341 states and 831674 transitions. [2023-12-21 13:09:03,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:09:03,151 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 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 162 [2023-12-21 13:09:03,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:09:04,089 INFO L225 Difference]: With dead ends: 517341 [2023-12-21 13:09:04,089 INFO L226 Difference]: Without dead ends: 441689 [2023-12-21 13:09:04,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:09:04,207 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 1327 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:09:04,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 2646 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:09:04,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441689 states. [2023-12-21 13:09:09,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441689 to 373885. [2023-12-21 13:09:09,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373885 states, 373884 states have (on average 1.6012265836462647) internal successors, (598673), 373884 states have internal predecessors, (598673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:09:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373885 states to 373885 states and 598673 transitions. [2023-12-21 13:09:10,564 INFO L78 Accepts]: Start accepts. Automaton has 373885 states and 598673 transitions. Word has length 162 [2023-12-21 13:09:10,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:09:10,564 INFO L495 AbstractCegarLoop]: Abstraction has 373885 states and 598673 transitions. [2023-12-21 13:09:10,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:09:10,565 INFO L276 IsEmpty]: Start isEmpty. Operand 373885 states and 598673 transitions. [2023-12-21 13:09:10,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 13:09:10,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:09:10,571 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:09:10,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:09:10,571 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:09:10,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:09:10,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1721533206, now seen corresponding path program 1 times [2023-12-21 13:09:10,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:09:10,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296865824] [2023-12-21 13:09:10,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:09:10,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:09:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:09:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 13:09:10,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:09:10,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296865824] [2023-12-21 13:09:10,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296865824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:09:10,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:09:10,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:09:10,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234203232] [2023-12-21 13:09:10,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:09:10,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:09:10,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:09:10,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:09:10,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:09:10,731 INFO L87 Difference]: Start difference. First operand 373885 states and 598673 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:09:12,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:09:12,887 INFO L93 Difference]: Finished difference Result 547361 states and 880014 transitions. [2023-12-21 13:09:12,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:09:12,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 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 162 [2023-12-21 13:09:12,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:09:13,933 INFO L225 Difference]: With dead ends: 547361 [2023-12-21 13:09:13,934 INFO L226 Difference]: Without dead ends: 471709 [2023-12-21 13:09:14,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:09:14,089 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 1236 mSDsluCounter, 2357 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:09:14,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1236 Valid, 3090 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:09:14,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471709 states. [2023-12-21 13:09:19,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471709 to 433101. [2023-12-21 13:09:19,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433101 states, 433100 states have (on average 1.6028192103440313) internal successors, (694181), 433100 states have internal predecessors, (694181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:09:21,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433101 states to 433101 states and 694181 transitions. [2023-12-21 13:09:21,144 INFO L78 Accepts]: Start accepts. Automaton has 433101 states and 694181 transitions. Word has length 162 [2023-12-21 13:09:21,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:09:21,144 INFO L495 AbstractCegarLoop]: Abstraction has 433101 states and 694181 transitions. [2023-12-21 13:09:21,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:09:21,144 INFO L276 IsEmpty]: Start isEmpty. Operand 433101 states and 694181 transitions. [2023-12-21 13:09:21,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 13:09:21,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:09:21,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:09:21,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:09:21,150 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:09:21,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:09:21,151 INFO L85 PathProgramCache]: Analyzing trace with hash -372583500, now seen corresponding path program 1 times [2023-12-21 13:09:21,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:09:21,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55440774] [2023-12-21 13:09:21,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:09:21,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:09:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:09:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 13:09:21,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:09:21,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55440774] [2023-12-21 13:09:21,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55440774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:09:21,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:09:21,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:09:21,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601291522] [2023-12-21 13:09:21,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:09:21,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:09:21,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:09:21,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:09:21,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:09:21,236 INFO L87 Difference]: Start difference. First operand 433101 states and 694181 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:09:24,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:09:24,544 INFO L93 Difference]: Finished difference Result 867862 states and 1395514 transitions. [2023-12-21 13:09:24,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:09:24,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 162 [2023-12-21 13:09:24,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:09:26,715 INFO L225 Difference]: With dead ends: 867862 [2023-12-21 13:09:26,715 INFO L226 Difference]: Without dead ends: 791060 [2023-12-21 13:09:27,005 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 [2023-12-21 13:09:27,010 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 168 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:09:27,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 999 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:09:27,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791060 states. [2023-12-21 13:09:35,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791060 to 790383. [2023-12-21 13:09:36,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790383 states, 790382 states have (on average 1.6059158735902386) internal successors, (1269287), 790382 states have internal predecessors, (1269287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:09:39,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790383 states to 790383 states and 1269287 transitions. [2023-12-21 13:09:39,371 INFO L78 Accepts]: Start accepts. Automaton has 790383 states and 1269287 transitions. Word has length 162 [2023-12-21 13:09:39,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:09:39,371 INFO L495 AbstractCegarLoop]: Abstraction has 790383 states and 1269287 transitions. [2023-12-21 13:09:39,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:09:39,372 INFO L276 IsEmpty]: Start isEmpty. Operand 790383 states and 1269287 transitions. [2023-12-21 13:09:39,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-21 13:09:39,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:09:39,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:09:39,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:09:39,380 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:09:39,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:09:39,380 INFO L85 PathProgramCache]: Analyzing trace with hash 541787558, now seen corresponding path program 1 times [2023-12-21 13:09:39,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:09:39,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794239477] [2023-12-21 13:09:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:09:39,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:09:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:09:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:09:39,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:09:39,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794239477] [2023-12-21 13:09:39,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794239477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:09:39,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:09:39,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:09:39,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425620437] [2023-12-21 13:09:39,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:09:39,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:09:39,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:09:39,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:09:39,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:09:39,468 INFO L87 Difference]: Start difference. First operand 790383 states and 1269287 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:09:49,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:09:49,814 INFO L93 Difference]: Finished difference Result 2342347 states and 3762276 transitions. [2023-12-21 13:09:49,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:09:49,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2023-12-21 13:09:49,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:09:54,293 INFO L225 Difference]: With dead ends: 2342347 [2023-12-21 13:09:54,293 INFO L226 Difference]: Without dead ends: 1552024 [2023-12-21 13:09:55,193 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 [2023-12-21 13:09:55,195 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 403 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:09:55,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 1292 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:09:56,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552024 states.