/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:56:01,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:56:01,154 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 17:56:01,160 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:56:01,160 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:56:01,180 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:56:01,180 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:56:01,180 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:56:01,181 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:56:01,184 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:56:01,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:56:01,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:56:01,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:56:01,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:56:01,185 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:56:01,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:56:01,186 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:56:01,186 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:56:01,187 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:56:01,187 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:56:01,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:56:01,187 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:56:01,187 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:56:01,187 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:56:01,188 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:56:01,188 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:56:01,188 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:56:01,188 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:56:01,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:56:01,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:56:01,189 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:56:01,189 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:56:01,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:56:01,190 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:56:01,190 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:56:01,190 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:56:01,190 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:56:01,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:56:01,190 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:56:01,190 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:56:01,190 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:56:01,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:56:01,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:56:01,191 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:56:01,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:56:01,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:56:01,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:56:01,400 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:56:01,400 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:56:01,401 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label04.c [2023-12-15 17:56:02,484 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:56:02,838 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:56:02,840 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label04.c [2023-12-15 17:56:02,868 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fce0bb671/70f5a8d5f68a44909147926fe45aa8a7/FLAGfc01aa015 [2023-12-15 17:56:02,884 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fce0bb671/70f5a8d5f68a44909147926fe45aa8a7 [2023-12-15 17:56:02,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:56:02,889 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:56:02,891 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:56:02,891 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:56:02,895 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:56:02,895 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:56:02" (1/1) ... [2023-12-15 17:56:02,896 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fc52dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:56:02, skipping insertion in model container [2023-12-15 17:56:02,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:56:02" (1/1) ... [2023-12-15 17:56:03,003 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:56:03,339 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label04.c[15519,15532] [2023-12-15 17:56:03,410 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label04.c[22580,22593] [2023-12-15 17:56:03,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:56:03,895 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:56:03,928 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label04.c[15519,15532] [2023-12-15 17:56:03,934 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label04.c[22580,22593] [2023-12-15 17:56:04,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:56:04,251 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:56:04,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:56:04 WrapperNode [2023-12-15 17:56:04,252 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:56:04,253 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:56:04,253 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:56:04,253 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:56:04,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:56:04" (1/1) ... [2023-12-15 17:56:04,310 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:56:04" (1/1) ... [2023-12-15 17:56:04,530 INFO L138 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5154 [2023-12-15 17:56:04,531 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:56:04,532 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:56:04,532 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:56:04,532 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:56:04,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:56:04" (1/1) ... [2023-12-15 17:56:04,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:56:04" (1/1) ... [2023-12-15 17:56:04,571 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:56:04" (1/1) ... [2023-12-15 17:56:04,732 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]. [2023-12-15 17:56:04,732 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:56:04" (1/1) ... [2023-12-15 17:56:04,732 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:56:04" (1/1) ... [2023-12-15 17:56:04,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:56:04" (1/1) ... [2023-12-15 17:56:04,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:56:04" (1/1) ... [2023-12-15 17:56:04,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:56:04" (1/1) ... [2023-12-15 17:56:04,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:56:04" (1/1) ... [2023-12-15 17:56:04,956 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:56:04,958 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:56:04,958 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:56:04,958 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:56:04,959 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:56:04" (1/1) ... [2023-12-15 17:56:04,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:56:04,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:56:05,018 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) [2023-12-15 17:56:05,072 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 [2023-12-15 17:56:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:56:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:56:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:56:05,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:56:05,189 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:56:05,191 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:56:08,139 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:56:08,214 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:56:08,215 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-15 17:56:08,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:56:08 BoogieIcfgContainer [2023-12-15 17:56:08,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:56:08,217 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:56:08,217 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:56:08,219 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:56:08,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:56:02" (1/3) ... [2023-12-15 17:56:08,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125bf6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:56:08, skipping insertion in model container [2023-12-15 17:56:08,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:56:04" (2/3) ... [2023-12-15 17:56:08,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125bf6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:56:08, skipping insertion in model container [2023-12-15 17:56:08,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:56:08" (3/3) ... [2023-12-15 17:56:08,220 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label04.c [2023-12-15 17:56:08,248 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:56:08,249 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 17:56:08,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:56:08,340 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;@6c04c950, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:56:08,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 17:56:08,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:08,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-15 17:56:08,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:08,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:08,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:08,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:08,356 INFO L85 PathProgramCache]: Analyzing trace with hash -304708079, now seen corresponding path program 1 times [2023-12-15 17:56:08,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:08,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631224932] [2023-12-15 17:56:08,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:08,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:08,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:08,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:08,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631224932] [2023-12-15 17:56:08,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631224932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:08,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:08,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:56:08,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604694823] [2023-12-15 17:56:08,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:08,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 17:56:08,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:08,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 17:56:08,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 17:56:08,570 INFO L87 Difference]: Start difference. First operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:08,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:08,651 INFO L93 Difference]: Finished difference Result 1654 states and 3254 transitions. [2023-12-15 17:56:08,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 17:56:08,655 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-15 17:56:08,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:08,672 INFO L225 Difference]: With dead ends: 1654 [2023-12-15 17:56:08,672 INFO L226 Difference]: Without dead ends: 845 [2023-12-15 17:56:08,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 17:56:08,681 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:08,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1599 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:56:08,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-15 17:56:08,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-12-15 17:56:08,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.896797153024911) internal successors, (1599), 844 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:08,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1599 transitions. [2023-12-15 17:56:08,748 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1599 transitions. Word has length 23 [2023-12-15 17:56:08,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:08,748 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1599 transitions. [2023-12-15 17:56:08,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:08,748 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1599 transitions. [2023-12-15 17:56:08,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-15 17:56:08,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:08,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:08,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:56:08,750 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:08,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:08,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1993651821, now seen corresponding path program 1 times [2023-12-15 17:56:08,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:08,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182601922] [2023-12-15 17:56:08,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:08,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:08,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:08,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182601922] [2023-12-15 17:56:08,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182601922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:08,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:08,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:56:08,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454269284] [2023-12-15 17:56:08,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:08,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:56:08,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:08,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:56:08,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:56:08,993 INFO L87 Difference]: Start difference. First operand 845 states and 1599 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:09,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:09,051 INFO L93 Difference]: Finished difference Result 895 states and 1678 transitions. [2023-12-15 17:56:09,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:56:09,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-15 17:56:09,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:09,054 INFO L225 Difference]: With dead ends: 895 [2023-12-15 17:56:09,054 INFO L226 Difference]: Without dead ends: 845 [2023-12-15 17:56:09,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:56:09,055 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 0 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:09,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4744 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:56:09,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-15 17:56:09,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-12-15 17:56:09,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.849347568208778) internal successors, (1559), 844 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:09,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1559 transitions. [2023-12-15 17:56:09,065 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1559 transitions. Word has length 23 [2023-12-15 17:56:09,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:09,065 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1559 transitions. [2023-12-15 17:56:09,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:09,066 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1559 transitions. [2023-12-15 17:56:09,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 17:56:09,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:09,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:09,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:56:09,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:09,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:09,068 INFO L85 PathProgramCache]: Analyzing trace with hash 902394301, now seen corresponding path program 1 times [2023-12-15 17:56:09,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:09,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474222844] [2023-12-15 17:56:09,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:09,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:09,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:09,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474222844] [2023-12-15 17:56:09,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474222844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:09,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:09,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:56:09,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986922772] [2023-12-15 17:56:09,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:09,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:56:09,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:09,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:56:09,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:56:09,134 INFO L87 Difference]: Start difference. First operand 845 states and 1559 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:12,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:12,150 INFO L93 Difference]: Finished difference Result 2349 states and 4432 transitions. [2023-12-15 17:56:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:56:12,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2023-12-15 17:56:12,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:12,156 INFO L225 Difference]: With dead ends: 2349 [2023-12-15 17:56:12,156 INFO L226 Difference]: Without dead ends: 1596 [2023-12-15 17:56:12,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:56:12,158 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 861 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:12,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 592 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 17:56:12,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2023-12-15 17:56:12,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2023-12-15 17:56:12,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1594 states have (on average 1.5922208281053953) internal successors, (2538), 1595 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2538 transitions. [2023-12-15 17:56:12,180 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2538 transitions. Word has length 60 [2023-12-15 17:56:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:12,181 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2538 transitions. [2023-12-15 17:56:12,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:12,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2538 transitions. [2023-12-15 17:56:12,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 17:56:12,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:12,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:12,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 17:56:12,183 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:12,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:12,183 INFO L85 PathProgramCache]: Analyzing trace with hash -399524715, now seen corresponding path program 1 times [2023-12-15 17:56:12,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:12,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508320787] [2023-12-15 17:56:12,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:12,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:12,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:12,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508320787] [2023-12-15 17:56:12,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508320787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:12,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:12,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 17:56:12,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619839655] [2023-12-15 17:56:12,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:12,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:56:12,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:12,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:56:12,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:56:12,299 INFO L87 Difference]: Start difference. First operand 1596 states and 2538 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:12,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:12,536 INFO L93 Difference]: Finished difference Result 2160 states and 3450 transitions. [2023-12-15 17:56:12,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 17:56:12,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-15 17:56:12,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:12,543 INFO L225 Difference]: With dead ends: 2160 [2023-12-15 17:56:12,543 INFO L226 Difference]: Without dead ends: 2113 [2023-12-15 17:56:12,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:56:12,545 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 9675 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9675 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:12,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9675 Valid, 3624 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:56:12,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2023-12-15 17:56:12,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 1641. [2023-12-15 17:56:12,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1639 states have (on average 1.5930445393532642) internal successors, (2611), 1640 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:12,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2611 transitions. [2023-12-15 17:56:12,571 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2611 transitions. Word has length 62 [2023-12-15 17:56:12,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:12,571 INFO L495 AbstractCegarLoop]: Abstraction has 1641 states and 2611 transitions. [2023-12-15 17:56:12,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:12,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2611 transitions. [2023-12-15 17:56:12,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-15 17:56:12,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:12,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:12,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 17:56:12,573 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:12,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:12,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1824915739, now seen corresponding path program 1 times [2023-12-15 17:56:12,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:12,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039322408] [2023-12-15 17:56:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:12,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:12,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:12,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039322408] [2023-12-15 17:56:12,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039322408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:12,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:12,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:56:12,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093923291] [2023-12-15 17:56:12,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:12,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:56:12,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:12,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:56:12,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:56:12,628 INFO L87 Difference]: Start difference. First operand 1641 states and 2611 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:12,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:12,658 INFO L93 Difference]: Finished difference Result 1814 states and 2890 transitions. [2023-12-15 17:56:12,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:56:12,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-15 17:56:12,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:12,665 INFO L225 Difference]: With dead ends: 1814 [2023-12-15 17:56:12,665 INFO L226 Difference]: Without dead ends: 1722 [2023-12-15 17:56:12,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:56:12,668 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1488 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:12,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:56:12,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-12-15 17:56:12,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2023-12-15 17:56:12,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.5931315483119908) internal successors, (2737), 1719 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2737 transitions. [2023-12-15 17:56:12,693 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2737 transitions. Word has length 64 [2023-12-15 17:56:12,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:12,694 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2737 transitions. [2023-12-15 17:56:12,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:12,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2737 transitions. [2023-12-15 17:56:12,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-15 17:56:12,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:12,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:12,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 17:56:12,697 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:12,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:12,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1822770787, now seen corresponding path program 1 times [2023-12-15 17:56:12,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:12,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138738504] [2023-12-15 17:56:12,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:12,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:12,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:12,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138738504] [2023-12-15 17:56:12,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138738504] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:12,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:12,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 17:56:12,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665557961] [2023-12-15 17:56:12,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:12,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:56:12,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:12,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:56:12,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:56:12,978 INFO L87 Difference]: Start difference. First operand 1720 states and 2737 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:13,188 INFO L93 Difference]: Finished difference Result 1893 states and 3013 transitions. [2023-12-15 17:56:13,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 17:56:13,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-15 17:56:13,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:13,196 INFO L225 Difference]: With dead ends: 1893 [2023-12-15 17:56:13,197 INFO L226 Difference]: Without dead ends: 1722 [2023-12-15 17:56:13,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-15 17:56:13,198 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 1530 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:13,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 1983 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:56:13,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-12-15 17:56:13,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2023-12-15 17:56:13,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.5919674039580909) internal successors, (2735), 1719 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2735 transitions. [2023-12-15 17:56:13,227 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2735 transitions. Word has length 64 [2023-12-15 17:56:13,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:13,227 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2735 transitions. [2023-12-15 17:56:13,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2735 transitions. [2023-12-15 17:56:13,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-15 17:56:13,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:13,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:13,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 17:56:13,229 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:13,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:13,229 INFO L85 PathProgramCache]: Analyzing trace with hash -800020118, now seen corresponding path program 1 times [2023-12-15 17:56:13,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:13,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465980407] [2023-12-15 17:56:13,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:13,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:13,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:13,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465980407] [2023-12-15 17:56:13,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465980407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:13,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:13,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:56:13,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163246316] [2023-12-15 17:56:13,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:13,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:56:13,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:13,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:56:13,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:56:13,400 INFO L87 Difference]: Start difference. First operand 1720 states and 2735 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:13,439 INFO L93 Difference]: Finished difference Result 1728 states and 2744 transitions. [2023-12-15 17:56:13,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:56:13,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-15 17:56:13,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:13,444 INFO L225 Difference]: With dead ends: 1728 [2023-12-15 17:56:13,444 INFO L226 Difference]: Without dead ends: 1726 [2023-12-15 17:56:13,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:56:13,445 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4657 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:13,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4657 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:56:13,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2023-12-15 17:56:13,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1724. [2023-12-15 17:56:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1722 states have (on average 1.5900116144018583) internal successors, (2738), 1723 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2738 transitions. [2023-12-15 17:56:13,473 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2738 transitions. Word has length 65 [2023-12-15 17:56:13,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:13,473 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2738 transitions. [2023-12-15 17:56:13,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2738 transitions. [2023-12-15 17:56:13,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 17:56:13,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:13,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:13,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 17:56:13,475 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:13,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:13,475 INFO L85 PathProgramCache]: Analyzing trace with hash 306459741, now seen corresponding path program 1 times [2023-12-15 17:56:13,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:13,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323790655] [2023-12-15 17:56:13,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:13,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:13,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:13,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323790655] [2023-12-15 17:56:13,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323790655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:13,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:13,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:56:13,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086942978] [2023-12-15 17:56:13,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:13,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:56:13,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:13,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:56:13,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:56:13,515 INFO L87 Difference]: Start difference. First operand 1724 states and 2738 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:13,543 INFO L93 Difference]: Finished difference Result 1910 states and 3031 transitions. [2023-12-15 17:56:13,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:56:13,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-15 17:56:13,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:13,548 INFO L225 Difference]: With dead ends: 1910 [2023-12-15 17:56:13,548 INFO L226 Difference]: Without dead ends: 1814 [2023-12-15 17:56:13,549 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 [2023-12-15 17:56:13,549 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1504 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:13,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1692 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:56:13,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2023-12-15 17:56:13,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1812. [2023-12-15 17:56:13,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1810 states have (on average 1.5883977900552486) internal successors, (2875), 1811 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2875 transitions. [2023-12-15 17:56:13,577 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2875 transitions. Word has length 66 [2023-12-15 17:56:13,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:13,577 INFO L495 AbstractCegarLoop]: Abstraction has 1812 states and 2875 transitions. [2023-12-15 17:56:13,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2875 transitions. [2023-12-15 17:56:13,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 17:56:13,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:13,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:13,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 17:56:13,578 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:13,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:13,579 INFO L85 PathProgramCache]: Analyzing trace with hash -103926947, now seen corresponding path program 1 times [2023-12-15 17:56:13,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:13,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441535320] [2023-12-15 17:56:13,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:13,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:13,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:13,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441535320] [2023-12-15 17:56:13,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441535320] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:13,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:13,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:56:13,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786254082] [2023-12-15 17:56:13,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:13,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:56:13,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:13,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:56:13,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:56:13,617 INFO L87 Difference]: Start difference. First operand 1812 states and 2875 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:13,646 INFO L93 Difference]: Finished difference Result 2310 states and 3655 transitions. [2023-12-15 17:56:13,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:56:13,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-15 17:56:13,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:13,653 INFO L225 Difference]: With dead ends: 2310 [2023-12-15 17:56:13,653 INFO L226 Difference]: Without dead ends: 2049 [2023-12-15 17:56:13,654 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 [2023-12-15 17:56:13,655 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 1502 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:13,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:56:13,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2023-12-15 17:56:13,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2047. [2023-12-15 17:56:13,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2045 states have (on average 1.5828850855745722) internal successors, (3237), 2046 states have internal predecessors, (3237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 3237 transitions. [2023-12-15 17:56:13,685 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 3237 transitions. Word has length 66 [2023-12-15 17:56:13,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:13,685 INFO L495 AbstractCegarLoop]: Abstraction has 2047 states and 3237 transitions. [2023-12-15 17:56:13,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 3237 transitions. [2023-12-15 17:56:13,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 17:56:13,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:13,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:13,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 17:56:13,686 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:13,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:13,687 INFO L85 PathProgramCache]: Analyzing trace with hash -332566179, now seen corresponding path program 1 times [2023-12-15 17:56:13,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:13,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986150342] [2023-12-15 17:56:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:13,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:13,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:13,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986150342] [2023-12-15 17:56:13,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986150342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:13,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:13,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:56:13,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853927658] [2023-12-15 17:56:13,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:13,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:56:13,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:13,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:56:13,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:56:13,720 INFO L87 Difference]: Start difference. First operand 2047 states and 3237 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:13,751 INFO L93 Difference]: Finished difference Result 2991 states and 4699 transitions. [2023-12-15 17:56:13,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:56:13,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-15 17:56:13,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:13,758 INFO L225 Difference]: With dead ends: 2991 [2023-12-15 17:56:13,759 INFO L226 Difference]: Without dead ends: 2495 [2023-12-15 17:56:13,760 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 [2023-12-15 17:56:13,760 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1498 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:13,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1694 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:56:13,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2023-12-15 17:56:13,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2493. [2023-12-15 17:56:13,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 2491 states have (on average 1.5708550782818145) internal successors, (3913), 2492 states have internal predecessors, (3913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3913 transitions. [2023-12-15 17:56:13,798 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3913 transitions. Word has length 66 [2023-12-15 17:56:13,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:13,799 INFO L495 AbstractCegarLoop]: Abstraction has 2493 states and 3913 transitions. [2023-12-15 17:56:13,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3913 transitions. [2023-12-15 17:56:13,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 17:56:13,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:13,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:13,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 17:56:13,800 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:13,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:13,800 INFO L85 PathProgramCache]: Analyzing trace with hash -958222243, now seen corresponding path program 1 times [2023-12-15 17:56:13,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:13,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271677763] [2023-12-15 17:56:13,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:13,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:13,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:13,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271677763] [2023-12-15 17:56:13,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271677763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:13,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:13,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:56:13,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127412955] [2023-12-15 17:56:13,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:13,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:56:13,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:13,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:56:13,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:56:13,833 INFO L87 Difference]: Start difference. First operand 2493 states and 3913 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:13,875 INFO L93 Difference]: Finished difference Result 4281 states and 6643 transitions. [2023-12-15 17:56:13,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:56:13,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-15 17:56:13,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:13,885 INFO L225 Difference]: With dead ends: 4281 [2023-12-15 17:56:13,885 INFO L226 Difference]: Without dead ends: 3339 [2023-12-15 17:56:13,887 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 [2023-12-15 17:56:13,887 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1496 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:13,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1696 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:56:13,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2023-12-15 17:56:13,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3337. [2023-12-15 17:56:13,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3337 states, 3335 states have (on average 1.5499250374812594) internal successors, (5169), 3336 states have internal predecessors, (5169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3337 states to 3337 states and 5169 transitions. [2023-12-15 17:56:13,945 INFO L78 Accepts]: Start accepts. Automaton has 3337 states and 5169 transitions. Word has length 66 [2023-12-15 17:56:13,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:13,945 INFO L495 AbstractCegarLoop]: Abstraction has 3337 states and 5169 transitions. [2023-12-15 17:56:13,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:13,945 INFO L276 IsEmpty]: Start isEmpty. Operand 3337 states and 5169 transitions. [2023-12-15 17:56:13,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 17:56:13,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:13,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:13,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 17:56:13,946 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:13,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:13,946 INFO L85 PathProgramCache]: Analyzing trace with hash -69488803, now seen corresponding path program 1 times [2023-12-15 17:56:13,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:13,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124300799] [2023-12-15 17:56:13,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:13,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:13,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:13,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124300799] [2023-12-15 17:56:13,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124300799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:13,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:13,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:56:13,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575867186] [2023-12-15 17:56:13,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:13,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:56:13,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:13,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:56:13,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:56:13,979 INFO L87 Difference]: Start difference. First operand 3337 states and 5169 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:14,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:14,039 INFO L93 Difference]: Finished difference Result 6717 states and 10243 transitions. [2023-12-15 17:56:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:56:14,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-15 17:56:14,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:14,051 INFO L225 Difference]: With dead ends: 6717 [2023-12-15 17:56:14,052 INFO L226 Difference]: Without dead ends: 4931 [2023-12-15 17:56:14,055 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 [2023-12-15 17:56:14,055 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1494 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:14,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:56:14,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2023-12-15 17:56:14,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 4929. [2023-12-15 17:56:14,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4929 states, 4927 states have (on average 1.519991881469454) internal successors, (7489), 4928 states have internal predecessors, (7489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:14,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4929 states to 4929 states and 7489 transitions. [2023-12-15 17:56:14,216 INFO L78 Accepts]: Start accepts. Automaton has 4929 states and 7489 transitions. Word has length 66 [2023-12-15 17:56:14,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:14,216 INFO L495 AbstractCegarLoop]: Abstraction has 4929 states and 7489 transitions. [2023-12-15 17:56:14,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:14,216 INFO L276 IsEmpty]: Start isEmpty. Operand 4929 states and 7489 transitions. [2023-12-15 17:56:14,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 17:56:14,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:14,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:14,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 17:56:14,217 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:14,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:14,217 INFO L85 PathProgramCache]: Analyzing trace with hash -372510115, now seen corresponding path program 1 times [2023-12-15 17:56:14,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:14,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58843977] [2023-12-15 17:56:14,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:14,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:14,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:14,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58843977] [2023-12-15 17:56:14,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58843977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:14,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:14,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:56:14,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760349290] [2023-12-15 17:56:14,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:14,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:56:14,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:14,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:56:14,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:56:14,249 INFO L87 Difference]: Start difference. First operand 4929 states and 7489 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:14,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:14,341 INFO L93 Difference]: Finished difference Result 11301 states and 16867 transitions. [2023-12-15 17:56:14,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:56:14,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-15 17:56:14,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:14,354 INFO L225 Difference]: With dead ends: 11301 [2023-12-15 17:56:14,354 INFO L226 Difference]: Without dead ends: 7923 [2023-12-15 17:56:14,359 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 [2023-12-15 17:56:14,359 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1500 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:14,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1700 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:56:14,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7923 states. [2023-12-15 17:56:14,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7923 to 7921. [2023-12-15 17:56:14,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7921 states, 7919 states have (on average 1.4831418108347014) internal successors, (11745), 7920 states have internal predecessors, (11745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:14,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 11745 transitions. [2023-12-15 17:56:14,513 INFO L78 Accepts]: Start accepts. Automaton has 7921 states and 11745 transitions. Word has length 66 [2023-12-15 17:56:14,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:14,513 INFO L495 AbstractCegarLoop]: Abstraction has 7921 states and 11745 transitions. [2023-12-15 17:56:14,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:14,513 INFO L276 IsEmpty]: Start isEmpty. Operand 7921 states and 11745 transitions. [2023-12-15 17:56:14,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 17:56:14,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:14,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:14,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 17:56:14,516 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:14,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:14,516 INFO L85 PathProgramCache]: Analyzing trace with hash -956920740, now seen corresponding path program 1 times [2023-12-15 17:56:14,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:14,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105621083] [2023-12-15 17:56:14,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:14,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:56:14,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:14,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105621083] [2023-12-15 17:56:14,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105621083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:14,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:14,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 17:56:14,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670808550] [2023-12-15 17:56:14,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:14,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:56:14,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:14,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:56:14,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:56:14,634 INFO L87 Difference]: Start difference. First operand 7921 states and 11745 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:15,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:15,465 INFO L93 Difference]: Finished difference Result 45567 states and 66568 transitions. [2023-12-15 17:56:15,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 17:56:15,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-15 17:56:15,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:15,528 INFO L225 Difference]: With dead ends: 45567 [2023-12-15 17:56:15,528 INFO L226 Difference]: Without dead ends: 41085 [2023-12-15 17:56:15,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 17:56:15,543 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 8059 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8059 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:15,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8059 Valid, 3989 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:56:15,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41085 states. [2023-12-15 17:56:16,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41085 to 13361. [2023-12-15 17:56:16,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13361 states, 13359 states have (on average 1.4660528482670858) internal successors, (19585), 13360 states have internal predecessors, (19585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:16,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13361 states to 13361 states and 19585 transitions. [2023-12-15 17:56:16,126 INFO L78 Accepts]: Start accepts. Automaton has 13361 states and 19585 transitions. Word has length 86 [2023-12-15 17:56:16,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:16,126 INFO L495 AbstractCegarLoop]: Abstraction has 13361 states and 19585 transitions. [2023-12-15 17:56:16,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:16,126 INFO L276 IsEmpty]: Start isEmpty. Operand 13361 states and 19585 transitions. [2023-12-15 17:56:16,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 17:56:16,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:16,129 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:16,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 17:56:16,129 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:16,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:16,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1367307428, now seen corresponding path program 1 times [2023-12-15 17:56:16,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:16,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547611509] [2023-12-15 17:56:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:16,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 17:56:16,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:16,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547611509] [2023-12-15 17:56:16,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547611509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:16,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:16,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 17:56:16,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095871256] [2023-12-15 17:56:16,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:16,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:56:16,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:16,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:56:16,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:56:16,245 INFO L87 Difference]: Start difference. First operand 13361 states and 19585 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:17,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:17,233 INFO L93 Difference]: Finished difference Result 51935 states and 75784 transitions. [2023-12-15 17:56:17,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 17:56:17,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-15 17:56:17,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:17,298 INFO L225 Difference]: With dead ends: 51935 [2023-12-15 17:56:17,298 INFO L226 Difference]: Without dead ends: 45565 [2023-12-15 17:56:17,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 17:56:17,316 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 8063 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8063 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:17,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8063 Valid, 3935 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:56:17,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45565 states. [2023-12-15 17:56:18,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45565 to 21969. [2023-12-15 17:56:18,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21969 states, 21967 states have (on average 1.4553193426503392) internal successors, (31969), 21968 states have internal predecessors, (31969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:18,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21969 states to 21969 states and 31969 transitions. [2023-12-15 17:56:18,064 INFO L78 Accepts]: Start accepts. Automaton has 21969 states and 31969 transitions. Word has length 86 [2023-12-15 17:56:18,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:18,064 INFO L495 AbstractCegarLoop]: Abstraction has 21969 states and 31969 transitions. [2023-12-15 17:56:18,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:18,065 INFO L276 IsEmpty]: Start isEmpty. Operand 21969 states and 31969 transitions. [2023-12-15 17:56:18,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 17:56:18,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:18,068 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:18,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 17:56:18,069 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:18,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:18,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1595946660, now seen corresponding path program 1 times [2023-12-15 17:56:18,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:18,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675945602] [2023-12-15 17:56:18,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:18,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:18,199 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 17:56:18,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:18,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675945602] [2023-12-15 17:56:18,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675945602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:18,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:18,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 17:56:18,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922274179] [2023-12-15 17:56:18,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:18,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:56:18,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:18,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:56:18,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:56:18,202 INFO L87 Difference]: Start difference. First operand 21969 states and 31969 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:19,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:19,217 INFO L93 Difference]: Finished difference Result 58303 states and 84968 transitions. [2023-12-15 17:56:19,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 17:56:19,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-15 17:56:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:19,289 INFO L225 Difference]: With dead ends: 58303 [2023-12-15 17:56:19,289 INFO L226 Difference]: Without dead ends: 51933 [2023-12-15 17:56:19,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 17:56:19,304 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 8103 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8103 SdHoareTripleChecker+Valid, 3954 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:19,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8103 Valid, 3954 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:56:19,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51933 states. [2023-12-15 17:56:20,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51933 to 28337. [2023-12-15 17:56:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28337 states, 28335 states have (on average 1.4523733898006) internal successors, (41153), 28336 states have internal predecessors, (41153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:20,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28337 states to 28337 states and 41153 transitions. [2023-12-15 17:56:20,262 INFO L78 Accepts]: Start accepts. Automaton has 28337 states and 41153 transitions. Word has length 86 [2023-12-15 17:56:20,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:20,263 INFO L495 AbstractCegarLoop]: Abstraction has 28337 states and 41153 transitions. [2023-12-15 17:56:20,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:20,263 INFO L276 IsEmpty]: Start isEmpty. Operand 28337 states and 41153 transitions. [2023-12-15 17:56:20,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 17:56:20,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:20,266 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:20,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 17:56:20,266 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:20,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:20,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2073364572, now seen corresponding path program 1 times [2023-12-15 17:56:20,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:20,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067319715] [2023-12-15 17:56:20,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:20,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 17:56:20,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:20,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067319715] [2023-12-15 17:56:20,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067319715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:20,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:20,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 17:56:20,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88023956] [2023-12-15 17:56:20,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:20,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:56:20,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:20,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:56:20,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:56:20,413 INFO L87 Difference]: Start difference. First operand 28337 states and 41153 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:21,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:21,550 INFO L93 Difference]: Finished difference Result 64671 states and 94152 transitions. [2023-12-15 17:56:21,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 17:56:21,551 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-15 17:56:21,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:21,668 INFO L225 Difference]: With dead ends: 64671 [2023-12-15 17:56:21,673 INFO L226 Difference]: Without dead ends: 58301 [2023-12-15 17:56:21,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 17:56:21,694 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8157 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8157 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:21,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8157 Valid, 3919 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:56:21,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58301 states. [2023-12-15 17:56:22,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58301 to 34705. [2023-12-15 17:56:22,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34705 states, 34703 states have (on average 1.4505086015618247) internal successors, (50337), 34704 states have internal predecessors, (50337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:22,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34705 states to 34705 states and 50337 transitions. [2023-12-15 17:56:22,748 INFO L78 Accepts]: Start accepts. Automaton has 34705 states and 50337 transitions. Word has length 86 [2023-12-15 17:56:22,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:22,749 INFO L495 AbstractCegarLoop]: Abstraction has 34705 states and 50337 transitions. [2023-12-15 17:56:22,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:22,749 INFO L276 IsEmpty]: Start isEmpty. Operand 34705 states and 50337 transitions. [2023-12-15 17:56:22,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 17:56:22,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:22,752 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:22,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 17:56:22,752 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:22,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:22,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1332869284, now seen corresponding path program 1 times [2023-12-15 17:56:22,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:22,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260062881] [2023-12-15 17:56:22,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:22,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 17:56:22,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:22,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260062881] [2023-12-15 17:56:22,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260062881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:22,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:22,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 17:56:22,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088754096] [2023-12-15 17:56:22,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:22,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:56:22,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:22,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:56:22,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:56:22,878 INFO L87 Difference]: Start difference. First operand 34705 states and 50337 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:24,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:24,143 INFO L93 Difference]: Finished difference Result 71039 states and 103336 transitions. [2023-12-15 17:56:24,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 17:56:24,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-15 17:56:24,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:24,228 INFO L225 Difference]: With dead ends: 71039 [2023-12-15 17:56:24,228 INFO L226 Difference]: Without dead ends: 64669 [2023-12-15 17:56:24,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 17:56:24,247 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8073 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8073 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:24,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8073 Valid, 3975 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:56:24,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64669 states. [2023-12-15 17:56:25,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64669 to 41073. [2023-12-15 17:56:25,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41073 states, 41071 states have (on average 1.4492220788390835) internal successors, (59521), 41072 states have internal predecessors, (59521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:25,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41073 states to 41073 states and 59521 transitions. [2023-12-15 17:56:25,662 INFO L78 Accepts]: Start accepts. Automaton has 41073 states and 59521 transitions. Word has length 86 [2023-12-15 17:56:25,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:25,662 INFO L495 AbstractCegarLoop]: Abstraction has 41073 states and 59521 transitions. [2023-12-15 17:56:25,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand 41073 states and 59521 transitions. [2023-12-15 17:56:25,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 17:56:25,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:25,666 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:25,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 17:56:25,667 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:25,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:25,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1635890596, now seen corresponding path program 1 times [2023-12-15 17:56:25,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:25,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816435742] [2023-12-15 17:56:25,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:25,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 17:56:25,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:25,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816435742] [2023-12-15 17:56:25,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816435742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:25,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:25,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 17:56:25,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662531594] [2023-12-15 17:56:25,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:25,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:56:25,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:25,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:56:25,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:56:25,775 INFO L87 Difference]: Start difference. First operand 41073 states and 59521 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:27,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:27,239 INFO L93 Difference]: Finished difference Result 77407 states and 112520 transitions. [2023-12-15 17:56:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 17:56:27,239 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-15 17:56:27,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:27,319 INFO L225 Difference]: With dead ends: 77407 [2023-12-15 17:56:27,319 INFO L226 Difference]: Without dead ends: 71037 [2023-12-15 17:56:27,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 17:56:27,336 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 8010 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8010 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:27,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8010 Valid, 4111 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:56:27,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71037 states. [2023-12-15 17:56:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71037 to 47441. [2023-12-15 17:56:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47441 states, 47439 states have (on average 1.448280950272982) internal successors, (68705), 47440 states have internal predecessors, (68705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:28,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47441 states to 47441 states and 68705 transitions. [2023-12-15 17:56:28,971 INFO L78 Accepts]: Start accepts. Automaton has 47441 states and 68705 transitions. Word has length 86 [2023-12-15 17:56:28,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:28,971 INFO L495 AbstractCegarLoop]: Abstraction has 47441 states and 68705 transitions. [2023-12-15 17:56:28,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:28,971 INFO L276 IsEmpty]: Start isEmpty. Operand 47441 states and 68705 transitions. [2023-12-15 17:56:28,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-15 17:56:28,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:28,977 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:28,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 17:56:28,977 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:28,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:28,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1295750022, now seen corresponding path program 1 times [2023-12-15 17:56:28,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:28,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115457809] [2023-12-15 17:56:28,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:28,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:29,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:29,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115457809] [2023-12-15 17:56:29,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115457809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:29,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:29,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:56:29,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488361117] [2023-12-15 17:56:29,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:29,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:56:29,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:29,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:56:29,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:56:29,044 INFO L87 Difference]: Start difference. First operand 47441 states and 68705 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:30,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:30,083 INFO L93 Difference]: Finished difference Result 93333 states and 134947 transitions. [2023-12-15 17:56:30,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:56:30,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-15 17:56:30,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:30,136 INFO L225 Difference]: With dead ends: 93333 [2023-12-15 17:56:30,136 INFO L226 Difference]: Without dead ends: 47443 [2023-12-15 17:56:30,158 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 [2023-12-15 17:56:30,159 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 53 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:30,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3143 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:56:30,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47443 states. [2023-12-15 17:56:31,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47443 to 47441. [2023-12-15 17:56:31,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47441 states, 47439 states have (on average 1.4337781150530156) internal successors, (68017), 47440 states have internal predecessors, (68017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:31,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47441 states to 47441 states and 68017 transitions. [2023-12-15 17:56:31,679 INFO L78 Accepts]: Start accepts. Automaton has 47441 states and 68017 transitions. Word has length 87 [2023-12-15 17:56:31,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:31,680 INFO L495 AbstractCegarLoop]: Abstraction has 47441 states and 68017 transitions. [2023-12-15 17:56:31,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:31,680 INFO L276 IsEmpty]: Start isEmpty. Operand 47441 states and 68017 transitions. [2023-12-15 17:56:31,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-15 17:56:31,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:31,683 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:31,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 17:56:31,683 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:31,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:31,684 INFO L85 PathProgramCache]: Analyzing trace with hash 145945252, now seen corresponding path program 1 times [2023-12-15 17:56:31,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:31,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737313293] [2023-12-15 17:56:31,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:31,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:31,754 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:31,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:31,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737313293] [2023-12-15 17:56:31,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737313293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:31,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:31,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:56:31,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135819940] [2023-12-15 17:56:31,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:31,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:56:31,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:31,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:56:31,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:56:31,756 INFO L87 Difference]: Start difference. First operand 47441 states and 68017 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:32,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:32,237 INFO L93 Difference]: Finished difference Result 64265 states and 92280 transitions. [2023-12-15 17:56:32,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:56:32,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-15 17:56:32,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:32,254 INFO L225 Difference]: With dead ends: 64265 [2023-12-15 17:56:32,254 INFO L226 Difference]: Without dead ends: 18375 [2023-12-15 17:56:32,274 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 [2023-12-15 17:56:32,275 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 47 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:32,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:56:32,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18375 states. [2023-12-15 17:56:32,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18375 to 18368. [2023-12-15 17:56:32,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18368 states, 18366 states have (on average 1.4417946204943919) internal successors, (26480), 18367 states have internal predecessors, (26480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18368 states to 18368 states and 26480 transitions. [2023-12-15 17:56:32,771 INFO L78 Accepts]: Start accepts. Automaton has 18368 states and 26480 transitions. Word has length 88 [2023-12-15 17:56:32,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:32,771 INFO L495 AbstractCegarLoop]: Abstraction has 18368 states and 26480 transitions. [2023-12-15 17:56:32,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:32,771 INFO L276 IsEmpty]: Start isEmpty. Operand 18368 states and 26480 transitions. [2023-12-15 17:56:32,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-15 17:56:32,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:32,773 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:32,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 17:56:32,773 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:32,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:32,773 INFO L85 PathProgramCache]: Analyzing trace with hash 542716552, now seen corresponding path program 1 times [2023-12-15 17:56:32,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:32,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62185694] [2023-12-15 17:56:32,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:32,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:32,824 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:32,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:32,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62185694] [2023-12-15 17:56:32,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62185694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:32,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:32,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:56:32,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303854779] [2023-12-15 17:56:32,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:32,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:56:32,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:32,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:56:32,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:56:32,825 INFO L87 Difference]: Start difference. First operand 18368 states and 26480 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:33,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:33,005 INFO L93 Difference]: Finished difference Result 26772 states and 38482 transitions. [2023-12-15 17:56:33,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:56:33,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-15 17:56:33,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:33,015 INFO L225 Difference]: With dead ends: 26772 [2023-12-15 17:56:33,015 INFO L226 Difference]: Without dead ends: 9970 [2023-12-15 17:56:33,023 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 [2023-12-15 17:56:33,024 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 49 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:33,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3119 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:56:33,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9970 states. [2023-12-15 17:56:33,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9970 to 9968. [2023-12-15 17:56:33,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9968 states, 9966 states have (on average 1.4408990567930966) internal successors, (14360), 9967 states have internal predecessors, (14360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:33,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9968 states to 9968 states and 14360 transitions. [2023-12-15 17:56:33,216 INFO L78 Accepts]: Start accepts. Automaton has 9968 states and 14360 transitions. Word has length 89 [2023-12-15 17:56:33,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:33,216 INFO L495 AbstractCegarLoop]: Abstraction has 9968 states and 14360 transitions. [2023-12-15 17:56:33,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:33,217 INFO L276 IsEmpty]: Start isEmpty. Operand 9968 states and 14360 transitions. [2023-12-15 17:56:33,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-15 17:56:33,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:33,218 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:33,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 17:56:33,218 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:33,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:33,218 INFO L85 PathProgramCache]: Analyzing trace with hash 2089619990, now seen corresponding path program 1 times [2023-12-15 17:56:33,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:33,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778447412] [2023-12-15 17:56:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:33,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:33,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:33,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778447412] [2023-12-15 17:56:33,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778447412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:33,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:33,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:56:33,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537091314] [2023-12-15 17:56:33,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:33,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:56:33,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:33,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:56:33,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:56:33,270 INFO L87 Difference]: Start difference. First operand 9968 states and 14360 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:33,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:33,425 INFO L93 Difference]: Finished difference Result 14172 states and 20302 transitions. [2023-12-15 17:56:33,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:56:33,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-15 17:56:33,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:33,430 INFO L225 Difference]: With dead ends: 14172 [2023-12-15 17:56:33,430 INFO L226 Difference]: Without dead ends: 5770 [2023-12-15 17:56:33,433 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 [2023-12-15 17:56:33,433 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 46 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:33,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3104 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:56:33,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5770 states. [2023-12-15 17:56:33,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5770 to 5768. [2023-12-15 17:56:33,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5766 states have (on average 1.4498785986819285) internal successors, (8360), 5767 states have internal predecessors, (8360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:33,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 8360 transitions. [2023-12-15 17:56:33,533 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 8360 transitions. Word has length 91 [2023-12-15 17:56:33,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:33,533 INFO L495 AbstractCegarLoop]: Abstraction has 5768 states and 8360 transitions. [2023-12-15 17:56:33,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:33,534 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 8360 transitions. [2023-12-15 17:56:33,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-15 17:56:33,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:33,535 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:33,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 17:56:33,535 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:33,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:33,535 INFO L85 PathProgramCache]: Analyzing trace with hash -925570268, now seen corresponding path program 1 times [2023-12-15 17:56:33,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:33,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718120584] [2023-12-15 17:56:33,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:33,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:33,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:33,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718120584] [2023-12-15 17:56:33,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718120584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:33,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:33,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:56:33,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185061733] [2023-12-15 17:56:33,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:33,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:56:33,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:33,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:56:33,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:56:33,587 INFO L87 Difference]: Start difference. First operand 5768 states and 8360 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:33,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:33,643 INFO L93 Difference]: Finished difference Result 7872 states and 11302 transitions. [2023-12-15 17:56:33,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:56:33,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-15 17:56:33,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:33,646 INFO L225 Difference]: With dead ends: 7872 [2023-12-15 17:56:33,646 INFO L226 Difference]: Without dead ends: 3670 [2023-12-15 17:56:33,648 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 [2023-12-15 17:56:33,649 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 43 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:33,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3089 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:56:33,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2023-12-15 17:56:33,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3668. [2023-12-15 17:56:33,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3666 states have (on average 1.470267321331151) internal successors, (5390), 3667 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:33,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 5390 transitions. [2023-12-15 17:56:33,704 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 5390 transitions. Word has length 93 [2023-12-15 17:56:33,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:33,704 INFO L495 AbstractCegarLoop]: Abstraction has 3668 states and 5390 transitions. [2023-12-15 17:56:33,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:33,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 5390 transitions. [2023-12-15 17:56:33,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-15 17:56:33,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:33,705 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:33,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 17:56:33,705 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:33,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:33,705 INFO L85 PathProgramCache]: Analyzing trace with hash 826121650, now seen corresponding path program 1 times [2023-12-15 17:56:33,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:33,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822725316] [2023-12-15 17:56:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:33,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:33,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:33,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822725316] [2023-12-15 17:56:33,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822725316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:56:33,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:56:33,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:56:33,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666956870] [2023-12-15 17:56:33,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:56:33,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:56:33,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:33,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:56:33,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:56:33,759 INFO L87 Difference]: Start difference. First operand 3668 states and 5390 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:33,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:33,795 INFO L93 Difference]: Finished difference Result 4722 states and 6847 transitions. [2023-12-15 17:56:33,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:56:33,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-15 17:56:33,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:33,798 INFO L225 Difference]: With dead ends: 4722 [2023-12-15 17:56:33,798 INFO L226 Difference]: Without dead ends: 2620 [2023-12-15 17:56:33,799 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 [2023-12-15 17:56:33,800 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 40 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:33,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3074 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:56:33,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2023-12-15 17:56:33,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2618. [2023-12-15 17:56:33,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2618 states, 2616 states have (on average 1.4984709480122325) internal successors, (3920), 2617 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:33,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 3920 transitions. [2023-12-15 17:56:33,835 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 3920 transitions. Word has length 95 [2023-12-15 17:56:33,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:33,836 INFO L495 AbstractCegarLoop]: Abstraction has 2618 states and 3920 transitions. [2023-12-15 17:56:33,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:33,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 3920 transitions. [2023-12-15 17:56:33,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-15 17:56:33,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:33,836 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] [2023-12-15 17:56:33,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 17:56:33,837 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:33,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:33,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1704195648, now seen corresponding path program 1 times [2023-12-15 17:56:33,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:33,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721779557] [2023-12-15 17:56:33,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:33,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:33,942 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:56:33,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:33,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721779557] [2023-12-15 17:56:33,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721779557] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:56:33,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709468413] [2023-12-15 17:56:33,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:33,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:56:33,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:56:33,945 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:56:33,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 17:56:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:34,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 17:56:34,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:56:34,256 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:56:34,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:56:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:56:34,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709468413] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:56:34,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:56:34,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-12-15 17:56:34,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286671329] [2023-12-15 17:56:34,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:56:34,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 17:56:34,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:34,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 17:56:34,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:56:34,529 INFO L87 Difference]: Start difference. First operand 2618 states and 3920 transitions. Second operand has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:34,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:34,664 INFO L93 Difference]: Finished difference Result 5154 states and 7319 transitions. [2023-12-15 17:56:34,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:56:34,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-15 17:56:34,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:34,668 INFO L225 Difference]: With dead ends: 5154 [2023-12-15 17:56:34,668 INFO L226 Difference]: Without dead ends: 4102 [2023-12-15 17:56:34,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2023-12-15 17:56:34,669 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1583 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 3445 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:34,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 3445 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:56:34,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2023-12-15 17:56:34,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 4025. [2023-12-15 17:56:34,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4025 states, 4023 states have (on average 1.4195873726075068) internal successors, (5711), 4024 states have internal predecessors, (5711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:34,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4025 states to 4025 states and 5711 transitions. [2023-12-15 17:56:34,746 INFO L78 Accepts]: Start accepts. Automaton has 4025 states and 5711 transitions. Word has length 97 [2023-12-15 17:56:34,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:34,746 INFO L495 AbstractCegarLoop]: Abstraction has 4025 states and 5711 transitions. [2023-12-15 17:56:34,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:34,747 INFO L276 IsEmpty]: Start isEmpty. Operand 4025 states and 5711 transitions. [2023-12-15 17:56:34,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-15 17:56:34,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:34,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:34,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 17:56:34,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-15 17:56:34,953 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:34,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:34,953 INFO L85 PathProgramCache]: Analyzing trace with hash 786161004, now seen corresponding path program 1 times [2023-12-15 17:56:34,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:34,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955763268] [2023-12-15 17:56:34,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:34,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:35,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:35,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955763268] [2023-12-15 17:56:35,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955763268] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:56:35,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916228353] [2023-12-15 17:56:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:35,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:56:35,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:56:35,628 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:56:35,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 17:56:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:35,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 17:56:35,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:56:36,147 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:36,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:56:36,796 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:36,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916228353] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:56:36,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:56:36,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-12-15 17:56:36,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736445142] [2023-12-15 17:56:36,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:56:36,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-15 17:56:36,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:36,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-15 17:56:36,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2023-12-15 17:56:36,797 INFO L87 Difference]: Start difference. First operand 4025 states and 5711 transitions. Second operand has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:39,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:39,139 INFO L93 Difference]: Finished difference Result 15113 states and 20230 transitions. [2023-12-15 17:56:39,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-15 17:56:39,140 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 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 98 [2023-12-15 17:56:39,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:39,151 INFO L225 Difference]: With dead ends: 15113 [2023-12-15 17:56:39,151 INFO L226 Difference]: Without dead ends: 12698 [2023-12-15 17:56:39,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1004, Invalid=3966, Unknown=0, NotChecked=0, Total=4970 [2023-12-15 17:56:39,156 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 27526 mSDsluCounter, 8140 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27526 SdHoareTripleChecker+Valid, 9663 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:39,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27526 Valid, 9663 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 17:56:39,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12698 states. [2023-12-15 17:56:39,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12698 to 12022. [2023-12-15 17:56:39,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12022 states, 12020 states have (on average 1.3338602329450915) internal successors, (16033), 12021 states have internal predecessors, (16033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:39,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12022 states to 12022 states and 16033 transitions. [2023-12-15 17:56:39,440 INFO L78 Accepts]: Start accepts. Automaton has 12022 states and 16033 transitions. Word has length 98 [2023-12-15 17:56:39,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:39,440 INFO L495 AbstractCegarLoop]: Abstraction has 12022 states and 16033 transitions. [2023-12-15 17:56:39,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:39,440 INFO L276 IsEmpty]: Start isEmpty. Operand 12022 states and 16033 transitions. [2023-12-15 17:56:39,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-15 17:56:39,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:39,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:39,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 17:56:39,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-15 17:56:39,646 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:39,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:39,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1210743956, now seen corresponding path program 1 times [2023-12-15 17:56:39,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:39,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711181733] [2023-12-15 17:56:39,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:39,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:40,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:40,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711181733] [2023-12-15 17:56:40,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711181733] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:56:40,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672696446] [2023-12-15 17:56:40,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:40,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:56:40,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:56:40,284 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:56:40,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 17:56:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:40,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 17:56:40,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:56:40,977 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:40,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:56:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:41,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672696446] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:56:41,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:56:41,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-12-15 17:56:41,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289942608] [2023-12-15 17:56:41,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:56:41,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-15 17:56:41,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:41,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-15 17:56:41,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2023-12-15 17:56:41,803 INFO L87 Difference]: Start difference. First operand 12022 states and 16033 transitions. Second operand has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:46,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:46,514 INFO L93 Difference]: Finished difference Result 58972 states and 76658 transitions. [2023-12-15 17:56:46,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-15 17:56:46,514 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 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 98 [2023-12-15 17:56:46,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:46,554 INFO L225 Difference]: With dead ends: 58972 [2023-12-15 17:56:46,554 INFO L226 Difference]: Without dead ends: 48822 [2023-12-15 17:56:46,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2233 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1531, Invalid=7025, Unknown=0, NotChecked=0, Total=8556 [2023-12-15 17:56:46,562 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 26594 mSDsluCounter, 8420 mSDsCounter, 0 mSdLazyCounter, 2033 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26594 SdHoareTripleChecker+Valid, 9945 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:46,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26594 Valid, 9945 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2033 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 17:56:46,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48822 states. [2023-12-15 17:56:47,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48822 to 45266. [2023-12-15 17:56:47,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45266 states, 45264 states have (on average 1.2860109579356662) internal successors, (58210), 45265 states have internal predecessors, (58210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:47,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45266 states to 45266 states and 58210 transitions. [2023-12-15 17:56:47,780 INFO L78 Accepts]: Start accepts. Automaton has 45266 states and 58210 transitions. Word has length 98 [2023-12-15 17:56:47,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:47,780 INFO L495 AbstractCegarLoop]: Abstraction has 45266 states and 58210 transitions. [2023-12-15 17:56:47,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:47,780 INFO L276 IsEmpty]: Start isEmpty. Operand 45266 states and 58210 transitions. [2023-12-15 17:56:47,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-15 17:56:47,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:47,783 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:47,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 17:56:47,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:56:47,988 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:47,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:47,988 INFO L85 PathProgramCache]: Analyzing trace with hash -84561202, now seen corresponding path program 1 times [2023-12-15 17:56:47,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:47,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413232186] [2023-12-15 17:56:47,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:47,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:48,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:48,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413232186] [2023-12-15 17:56:48,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413232186] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:56:48,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782091750] [2023-12-15 17:56:48,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:48,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:56:48,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:56:48,216 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:56:48,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 17:56:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:48,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 17:56:48,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:56:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:48,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:56:49,554 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:49,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782091750] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:56:49,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:56:49,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-15 17:56:49,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963097744] [2023-12-15 17:56:49,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:56:49,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-15 17:56:49,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:49,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-15 17:56:49,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-12-15 17:56:49,556 INFO L87 Difference]: Start difference. First operand 45266 states and 58210 transitions. Second operand has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:51,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:51,680 INFO L93 Difference]: Finished difference Result 76605 states and 98477 transitions. [2023-12-15 17:56:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-15 17:56:51,681 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-15 17:56:51,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:51,736 INFO L225 Difference]: With dead ends: 76605 [2023-12-15 17:56:51,736 INFO L226 Difference]: Without dead ends: 48282 [2023-12-15 17:56:51,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=690, Invalid=2616, Unknown=0, NotChecked=0, Total=3306 [2023-12-15 17:56:51,759 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 24243 mSDsluCounter, 6518 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24243 SdHoareTripleChecker+Valid, 8048 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:51,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24243 Valid, 8048 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 17:56:51,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48282 states. [2023-12-15 17:56:53,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48282 to 40102. [2023-12-15 17:56:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40102 states, 40100 states have (on average 1.268079800498753) internal successors, (50850), 40101 states have internal predecessors, (50850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:53,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40102 states to 40102 states and 50850 transitions. [2023-12-15 17:56:53,243 INFO L78 Accepts]: Start accepts. Automaton has 40102 states and 50850 transitions. Word has length 99 [2023-12-15 17:56:53,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:56:53,243 INFO L495 AbstractCegarLoop]: Abstraction has 40102 states and 50850 transitions. [2023-12-15 17:56:53,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:53,243 INFO L276 IsEmpty]: Start isEmpty. Operand 40102 states and 50850 transitions. [2023-12-15 17:56:53,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 17:56:53,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:56:53,246 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:56:53,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 17:56:53,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-15 17:56:53,453 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:56:53,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:56:53,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1157461308, now seen corresponding path program 1 times [2023-12-15 17:56:53,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:56:53,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204567785] [2023-12-15 17:56:53,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:53,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:56:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:53,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:56:53,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204567785] [2023-12-15 17:56:53,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204567785] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:56:53,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814577099] [2023-12-15 17:56:53,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:56:53,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:56:53,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:56:53,758 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:56:53,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 17:56:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:56:53,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-15 17:56:53,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:56:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:54,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:56:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:56:55,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814577099] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:56:55,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:56:55,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 15] total 35 [2023-12-15 17:56:55,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151594111] [2023-12-15 17:56:55,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:56:55,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-15 17:56:55,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:56:55,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-15 17:56:55,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2023-12-15 17:56:55,822 INFO L87 Difference]: Start difference. First operand 40102 states and 50850 transitions. Second operand has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:56:59,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:56:59,136 INFO L93 Difference]: Finished difference Result 69789 states and 87745 transitions. [2023-12-15 17:56:59,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-15 17:56:59,137 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-15 17:56:59,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:56:59,173 INFO L225 Difference]: With dead ends: 69789 [2023-12-15 17:56:59,173 INFO L226 Difference]: Without dead ends: 34399 [2023-12-15 17:56:59,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1359 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1152, Invalid=4398, Unknown=0, NotChecked=0, Total=5550 [2023-12-15 17:56:59,192 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 12081 mSDsluCounter, 18589 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12081 SdHoareTripleChecker+Valid, 20112 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 17:56:59,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12081 Valid, 20112 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 17:56:59,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34399 states. [2023-12-15 17:57:00,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34399 to 29779. [2023-12-15 17:57:00,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29779 states, 29777 states have (on average 1.2674547469523458) internal successors, (37741), 29778 states have internal predecessors, (37741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29779 states to 29779 states and 37741 transitions. [2023-12-15 17:57:00,291 INFO L78 Accepts]: Start accepts. Automaton has 29779 states and 37741 transitions. Word has length 100 [2023-12-15 17:57:00,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:57:00,291 INFO L495 AbstractCegarLoop]: Abstraction has 29779 states and 37741 transitions. [2023-12-15 17:57:00,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:57:00,291 INFO L276 IsEmpty]: Start isEmpty. Operand 29779 states and 37741 transitions. [2023-12-15 17:57:00,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 17:57:00,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:57:00,293 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:57:00,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 17:57:00,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:57:00,499 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:57:00,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:57:00,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1042053366, now seen corresponding path program 1 times [2023-12-15 17:57:00,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:57:00,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926056435] [2023-12-15 17:57:00,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:00,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:57:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:57:00,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:57:00,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926056435] [2023-12-15 17:57:00,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926056435] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:57:00,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030339681] [2023-12-15 17:57:00,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:57:00,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:57:00,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:57:00,858 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:57:00,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 17:57:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:57:00,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 17:57:00,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 17:57:01,419 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 17:57:01,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 17:57:01,440 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:57:01,442 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:57:01,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:57:01,624 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 102 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-4-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ATOM-1 context. [2023-12-15 17:57:01,626 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 17:57:01,628 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-15 17:57:01,630 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:57:01,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:57:01 BoogieIcfgContainer [2023-12-15 17:57:01,632 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:57:01,632 INFO L158 Benchmark]: Toolchain (without parser) took 58743.09ms. Allocated memory was 233.8MB in the beginning and 5.2GB in the end (delta: 4.9GB). Free memory was 168.5MB in the beginning and 3.1GB in the end (delta: -2.9GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-15 17:57:01,632 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 175.1MB. Free memory was 126.1MB in the beginning and 125.9MB in the end (delta: 184.6kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:57:01,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1360.68ms. Allocated memory is still 233.8MB. Free memory was 168.0MB in the beginning and 150.9MB in the end (delta: 17.1MB). Peak memory consumption was 91.0MB. Max. memory is 8.0GB. [2023-12-15 17:57:01,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 278.11ms. Allocated memory was 233.8MB in the beginning and 324.0MB in the end (delta: 90.2MB). Free memory was 150.9MB in the beginning and 222.1MB in the end (delta: -71.2MB). Peak memory consumption was 99.7MB. Max. memory is 8.0GB. [2023-12-15 17:57:01,633 INFO L158 Benchmark]: Boogie Preprocessor took 424.85ms. Allocated memory is still 324.0MB. Free memory was 222.1MB in the beginning and 168.1MB in the end (delta: 54.0MB). Peak memory consumption was 79.2MB. Max. memory is 8.0GB. [2023-12-15 17:57:01,633 INFO L158 Benchmark]: RCFGBuilder took 3257.59ms. Allocated memory was 324.0MB in the beginning and 641.7MB in the end (delta: 317.7MB). Free memory was 168.1MB in the beginning and 458.0MB in the end (delta: -289.9MB). Peak memory consumption was 226.5MB. Max. memory is 8.0GB. [2023-12-15 17:57:01,633 INFO L158 Benchmark]: TraceAbstraction took 53414.97ms. Allocated memory was 641.7MB in the beginning and 5.2GB in the end (delta: 4.5GB). Free memory was 457.0MB in the beginning and 3.1GB in the end (delta: -2.6GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-15 17:57:01,634 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 175.1MB. Free memory was 126.1MB in the beginning and 125.9MB in the end (delta: 184.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1360.68ms. Allocated memory is still 233.8MB. Free memory was 168.0MB in the beginning and 150.9MB in the end (delta: 17.1MB). Peak memory consumption was 91.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 278.11ms. Allocated memory was 233.8MB in the beginning and 324.0MB in the end (delta: 90.2MB). Free memory was 150.9MB in the beginning and 222.1MB in the end (delta: -71.2MB). Peak memory consumption was 99.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 424.85ms. Allocated memory is still 324.0MB. Free memory was 222.1MB in the beginning and 168.1MB in the end (delta: 54.0MB). Peak memory consumption was 79.2MB. Max. memory is 8.0GB. * RCFGBuilder took 3257.59ms. Allocated memory was 324.0MB in the beginning and 641.7MB in the end (delta: 317.7MB). Free memory was 168.1MB in the beginning and 458.0MB in the end (delta: -289.9MB). Peak memory consumption was 226.5MB. Max. memory is 8.0GB. * TraceAbstraction took 53414.97ms. Allocated memory was 641.7MB in the beginning and 5.2GB in the end (delta: 4.5GB). Free memory was 457.0MB in the beginning and 3.1GB in the end (delta: -2.6GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 514]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 514). Cancelled while NwaCegarLoop was analyzing trace of length 102 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-4-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 712]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 712). Cancelled while NwaCegarLoop was analyzing trace of length 102 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-4-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 849 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 53.3s, OverallIterations: 31, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 26.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 163319 SdHoareTripleChecker+Valid, 6.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 163319 mSDsluCounter, 122766 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76201 mSDsCounter, 938 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8912 IncrementalHoareTripleChecker+Invalid, 9850 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 938 mSolverCounterUnsat, 46565 mSDtfsCounter, 8912 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1362 GetRequests, 957 SyntacticMatches, 0 SemanticMatches, 405 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5422 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47441occurred in iteration=19, InterpolantAutomatonStates: 309, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.6s AutomataMinimizationTime, 30 MinimizatonAttempts, 163320 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 2800 NumberOfCodeBlocks, 2800 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 3252 ConstructedInterpolants, 0 QuantifiedInterpolants, 29442 SizeOfPredicates, 25 NumberOfNonLiveVariables, 2411 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 40 InterpolantComputations, 25 PerfectInterpolantSequences, 309/450 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown