/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:31:05,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:31:05,258 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 14:31:05,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:31:05,261 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:31:05,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:31:05,281 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:31:05,281 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:31:05,281 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:31:05,284 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:31:05,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:31:05,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:31:05,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:31:05,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:31:05,287 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:31:05,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:31:05,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:31:05,287 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:31:05,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:31:05,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:31:05,288 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:31:05,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:31:05,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:31:05,288 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:31:05,288 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:31:05,288 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:31:05,289 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:31:05,289 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:31:05,289 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:31:05,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:31:05,290 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:31:05,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:31:05,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:31:05,290 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:31:05,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:31:05,291 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:31:05,291 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:31:05,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:31:05,291 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:31:05,291 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:31:05,291 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:31:05,291 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:31:05,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:31:05,292 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:31:05,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:31:05,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:31:05,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:31:05,499 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:31:05,499 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:31:05,500 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label00.c [2023-12-20 14:31:06,591 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:31:06,947 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:31:06,948 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label00.c [2023-12-20 14:31:06,977 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5759bd94/16ea8214e70542769367aa6f3abe740a/FLAG1c0e5ddb0 [2023-12-20 14:31:06,989 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5759bd94/16ea8214e70542769367aa6f3abe740a [2023-12-20 14:31:06,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:31:06,991 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:31:06,993 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:31:06,993 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:31:06,996 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:31:06,996 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:31:06" (1/1) ... [2023-12-20 14:31:06,997 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2159cf7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:06, skipping insertion in model container [2023-12-20 14:31:06,997 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:31:06" (1/1) ... [2023-12-20 14:31:07,085 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:31:07,386 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.7.ufo.BOUNDED-14.pals+Problem12_label00.c[20426,20439] [2023-12-20 14:31:07,415 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.7.ufo.BOUNDED-14.pals+Problem12_label00.c[22301,22314] [2023-12-20 14:31:07,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:31:07,911 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:31:07,945 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.7.ufo.BOUNDED-14.pals+Problem12_label00.c[20426,20439] [2023-12-20 14:31:07,949 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.7.ufo.BOUNDED-14.pals+Problem12_label00.c[22301,22314] [2023-12-20 14:31:08,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:31:08,302 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:31:08,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:08 WrapperNode [2023-12-20 14:31:08,304 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:31:08,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:31:08,305 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:31:08,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:31:08,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:08" (1/1) ... [2023-12-20 14:31:08,339 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:08" (1/1) ... [2023-12-20 14:31:08,494 INFO L138 Inliner]: procedures = 38, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5214 [2023-12-20 14:31:08,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:31:08,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:31:08,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:31:08,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:31:08,503 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:08" (1/1) ... [2023-12-20 14:31:08,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:08" (1/1) ... [2023-12-20 14:31:08,538 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:08" (1/1) ... [2023-12-20 14:31:08,711 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 14:31:08,712 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:08" (1/1) ... [2023-12-20 14:31:08,712 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:08" (1/1) ... [2023-12-20 14:31:08,841 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:08" (1/1) ... [2023-12-20 14:31:08,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:08" (1/1) ... [2023-12-20 14:31:08,888 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:08" (1/1) ... [2023-12-20 14:31:08,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:08" (1/1) ... [2023-12-20 14:31:08,933 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:31:08,934 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:31:08,935 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:31:08,935 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:31:08,935 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:08" (1/1) ... [2023-12-20 14:31:08,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:31:08,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:31:08,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 14:31:08,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 14:31:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:31:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:31:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:31:08,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:31:09,057 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:31:09,058 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:31:11,834 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:31:11,885 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:31:11,885 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 14:31:11,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:31:11 BoogieIcfgContainer [2023-12-20 14:31:11,886 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:31:11,887 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:31:11,887 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:31:11,889 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:31:11,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:31:06" (1/3) ... [2023-12-20 14:31:11,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dc220f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:31:11, skipping insertion in model container [2023-12-20 14:31:11,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:08" (2/3) ... [2023-12-20 14:31:11,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dc220f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:31:11, skipping insertion in model container [2023-12-20 14:31:11,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:31:11" (3/3) ... [2023-12-20 14:31:11,891 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label00.c [2023-12-20 14:31:11,902 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:31:11,902 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:31:11,943 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:31:11,947 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;@5fc6cd59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:31:11,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:31:11,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:11,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-20 14:31:11,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:11,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:11,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:11,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:11,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1238718426, now seen corresponding path program 1 times [2023-12-20 14:31:11,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:11,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132799534] [2023-12-20 14:31:11,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:11,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:12,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:31:12,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:12,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132799534] [2023-12-20 14:31:12,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132799534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:12,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:12,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 14:31:12,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685974081] [2023-12-20 14:31:12,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:12,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 14:31:12,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:12,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 14:31:12,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 14:31:12,115 INFO L87 Difference]: Start difference. First operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 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 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:12,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:12,169 INFO L93 Difference]: Finished difference Result 1676 states and 3294 transitions. [2023-12-20 14:31:12,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 14:31:12,180 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-12-20 14:31:12,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:12,192 INFO L225 Difference]: With dead ends: 1676 [2023-12-20 14:31:12,192 INFO L226 Difference]: Without dead ends: 861 [2023-12-20 14:31:12,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 14:31:12,199 INFO L413 NwaCegarLoop]: 1629 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, 1629 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 [2023-12-20 14:31:12,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1629 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:31:12,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-20 14:31:12,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-12-20 14:31:12,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.8963911525029105) internal successors, (1629), 860 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:12,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1629 transitions. [2023-12-20 14:31:12,251 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1629 transitions. Word has length 15 [2023-12-20 14:31:12,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:12,251 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1629 transitions. [2023-12-20 14:31:12,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:12,252 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1629 transitions. [2023-12-20 14:31:12,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-20 14:31:12,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:12,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:12,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:31:12,253 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:12,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:12,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2076174218, now seen corresponding path program 1 times [2023-12-20 14:31:12,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:12,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62650912] [2023-12-20 14:31:12,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:12,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:31:12,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:12,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62650912] [2023-12-20 14:31:12,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62650912] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:12,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:12,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 14:31:12,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487107187] [2023-12-20 14:31:12,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:12,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:31:12,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:12,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:31:12,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:12,315 INFO L87 Difference]: Start difference. First operand 861 states and 1629 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:14,956 INFO L93 Difference]: Finished difference Result 2365 states and 4502 transitions. [2023-12-20 14:31:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:31:14,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-12-20 14:31:14,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:14,962 INFO L225 Difference]: With dead ends: 2365 [2023-12-20 14:31:14,962 INFO L226 Difference]: Without dead ends: 1612 [2023-12-20 14:31:14,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:14,964 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 1044 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:14,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 302 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 14:31:14,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2023-12-20 14:31:15,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2023-12-20 14:31:15,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1610 states have (on average 1.8434782608695652) internal successors, (2968), 1611 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:15,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2968 transitions. [2023-12-20 14:31:15,005 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2968 transitions. Word has length 15 [2023-12-20 14:31:15,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:15,006 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2968 transitions. [2023-12-20 14:31:15,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:15,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2968 transitions. [2023-12-20 14:31:15,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-20 14:31:15,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:15,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:15,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:31:15,010 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:15,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:15,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1712634287, now seen corresponding path program 1 times [2023-12-20 14:31:15,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:15,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601579907] [2023-12-20 14:31:15,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:15,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:31:15,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:15,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601579907] [2023-12-20 14:31:15,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601579907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:15,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:15,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:31:15,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642674657] [2023-12-20 14:31:15,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:15,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:31:15,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:15,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:31:15,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:31:15,199 INFO L87 Difference]: Start difference. First operand 1612 states and 2968 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:15,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:15,259 INFO L93 Difference]: Finished difference Result 1668 states and 3057 transitions. [2023-12-20 14:31:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:31:15,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-12-20 14:31:15,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:15,264 INFO L225 Difference]: With dead ends: 1668 [2023-12-20 14:31:15,264 INFO L226 Difference]: Without dead ends: 1612 [2023-12-20 14:31:15,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:31:15,265 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 0 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4824 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:15,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4824 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:31:15,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2023-12-20 14:31:15,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2023-12-20 14:31:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1610 states have (on average 1.8124223602484473) internal successors, (2918), 1611 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2918 transitions. [2023-12-20 14:31:15,288 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2918 transitions. Word has length 25 [2023-12-20 14:31:15,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:15,288 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2918 transitions. [2023-12-20 14:31:15,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:15,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2918 transitions. [2023-12-20 14:31:15,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 14:31:15,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:15,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:15,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:31:15,290 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:15,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:15,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1559561318, now seen corresponding path program 1 times [2023-12-20 14:31:15,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:15,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530397238] [2023-12-20 14:31:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:15,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:15,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:31:15,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:15,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530397238] [2023-12-20 14:31:15,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530397238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:15,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:15,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:31:15,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031607829] [2023-12-20 14:31:15,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:15,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:31:15,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:15,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:31:15,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:31:15,458 INFO L87 Difference]: Start difference. First operand 1612 states and 2918 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:15,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:15,834 INFO L93 Difference]: Finished difference Result 2354 states and 4122 transitions. [2023-12-20 14:31:15,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:31:15,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-20 14:31:15,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:15,842 INFO L225 Difference]: With dead ends: 2354 [2023-12-20 14:31:15,842 INFO L226 Difference]: Without dead ends: 2301 [2023-12-20 14:31:15,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-12-20 14:31:15,848 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 11475 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11475 SdHoareTripleChecker+Valid, 5036 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:15,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11475 Valid, 5036 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 14:31:15,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2023-12-20 14:31:15,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 1663. [2023-12-20 14:31:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1661 states have (on average 1.806742925948224) internal successors, (3001), 1662 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:15,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 3001 transitions. [2023-12-20 14:31:15,883 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 3001 transitions. Word has length 74 [2023-12-20 14:31:15,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:15,884 INFO L495 AbstractCegarLoop]: Abstraction has 1663 states and 3001 transitions. [2023-12-20 14:31:15,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:15,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 3001 transitions. [2023-12-20 14:31:15,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 14:31:15,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:15,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:15,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:31:15,890 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:15,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:15,891 INFO L85 PathProgramCache]: Analyzing trace with hash -327840202, now seen corresponding path program 1 times [2023-12-20 14:31:15,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:15,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741781423] [2023-12-20 14:31:15,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:15,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:31:15,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:15,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741781423] [2023-12-20 14:31:15,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741781423] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:15,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:15,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:31:15,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757492115] [2023-12-20 14:31:15,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:15,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:31:15,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:15,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:31:15,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:15,956 INFO L87 Difference]: Start difference. First operand 1663 states and 3001 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:16,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:16,000 INFO L93 Difference]: Finished difference Result 1860 states and 3320 transitions. [2023-12-20 14:31:16,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:31:16,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-20 14:31:16,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:16,005 INFO L225 Difference]: With dead ends: 1860 [2023-12-20 14:31:16,005 INFO L226 Difference]: Without dead ends: 1756 [2023-12-20 14:31:16,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:16,006 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 1496 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1654 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 [2023-12-20 14:31:16,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1654 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:31:16,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2023-12-20 14:31:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1754. [2023-12-20 14:31:16,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1752 states have (on average 1.7962328767123288) internal successors, (3147), 1753 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 3147 transitions. [2023-12-20 14:31:16,033 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 3147 transitions. Word has length 76 [2023-12-20 14:31:16,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:16,033 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 3147 transitions. [2023-12-20 14:31:16,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:16,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 3147 transitions. [2023-12-20 14:31:16,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 14:31:16,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:16,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:16,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:31:16,035 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:16,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:16,035 INFO L85 PathProgramCache]: Analyzing trace with hash -325695250, now seen corresponding path program 1 times [2023-12-20 14:31:16,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:16,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791359817] [2023-12-20 14:31:16,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:16,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:31:16,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:16,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791359817] [2023-12-20 14:31:16,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791359817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:16,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:16,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:31:16,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165784634] [2023-12-20 14:31:16,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:16,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:31:16,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:16,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:31:16,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:31:16,280 INFO L87 Difference]: Start difference. First operand 1754 states and 3147 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:16,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:16,527 INFO L93 Difference]: Finished difference Result 1951 states and 3463 transitions. [2023-12-20 14:31:16,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:31:16,528 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-20 14:31:16,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:16,533 INFO L225 Difference]: With dead ends: 1951 [2023-12-20 14:31:16,533 INFO L226 Difference]: Without dead ends: 1756 [2023-12-20 14:31:16,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-20 14:31:16,534 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 7545 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7545 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:16,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7545 Valid, 2062 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:31:16,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2023-12-20 14:31:16,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1754. [2023-12-20 14:31:16,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1752 states have (on average 1.7950913242009132) internal successors, (3145), 1753 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:16,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 3145 transitions. [2023-12-20 14:31:16,560 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 3145 transitions. Word has length 76 [2023-12-20 14:31:16,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:16,560 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 3145 transitions. [2023-12-20 14:31:16,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:16,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 3145 transitions. [2023-12-20 14:31:16,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 14:31:16,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:16,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:16,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:31:16,561 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:16,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:16,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1634972681, now seen corresponding path program 1 times [2023-12-20 14:31:16,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:16,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212707000] [2023-12-20 14:31:16,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:16,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:31:16,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:16,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212707000] [2023-12-20 14:31:16,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212707000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:16,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:16,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:31:16,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449248696] [2023-12-20 14:31:16,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:16,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:31:16,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:16,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:31:16,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:31:16,680 INFO L87 Difference]: Start difference. First operand 1754 states and 3145 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:16,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:16,709 INFO L93 Difference]: Finished difference Result 1762 states and 3154 transitions. [2023-12-20 14:31:16,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:31:16,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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 77 [2023-12-20 14:31:16,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:16,715 INFO L225 Difference]: With dead ends: 1762 [2023-12-20 14:31:16,715 INFO L226 Difference]: Without dead ends: 1760 [2023-12-20 14:31:16,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:31:16,716 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4717 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:16,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4717 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:31:16,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2023-12-20 14:31:16,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1758. [2023-12-20 14:31:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1756 states have (on average 1.7927107061503418) internal successors, (3148), 1757 states have internal predecessors, (3148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:16,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 3148 transitions. [2023-12-20 14:31:16,742 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 3148 transitions. Word has length 77 [2023-12-20 14:31:16,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:16,743 INFO L495 AbstractCegarLoop]: Abstraction has 1758 states and 3148 transitions. [2023-12-20 14:31:16,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:16,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 3148 transitions. [2023-12-20 14:31:16,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:31:16,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:16,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:16,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:31:16,744 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:16,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:16,744 INFO L85 PathProgramCache]: Analyzing trace with hash -562303954, now seen corresponding path program 1 times [2023-12-20 14:31:16,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:16,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412065103] [2023-12-20 14:31:16,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:16,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:16,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:31:16,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:16,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412065103] [2023-12-20 14:31:16,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412065103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:16,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:16,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:31:16,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287009572] [2023-12-20 14:31:16,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:16,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:31:16,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:16,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:31:16,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:16,818 INFO L87 Difference]: Start difference. First operand 1758 states and 3148 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:16,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:16,841 INFO L93 Difference]: Finished difference Result 1968 states and 3481 transitions. [2023-12-20 14:31:16,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:31:16,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-20 14:31:16,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:16,847 INFO L225 Difference]: With dead ends: 1968 [2023-12-20 14:31:16,847 INFO L226 Difference]: Without dead ends: 1860 [2023-12-20 14:31:16,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:16,849 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1514 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:16,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1732 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:31:16,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2023-12-20 14:31:16,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1858. [2023-12-20 14:31:16,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1856 states have (on average 1.7807112068965518) internal successors, (3305), 1857 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 3305 transitions. [2023-12-20 14:31:16,874 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 3305 transitions. Word has length 78 [2023-12-20 14:31:16,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:16,875 INFO L495 AbstractCegarLoop]: Abstraction has 1858 states and 3305 transitions. [2023-12-20 14:31:16,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:16,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 3305 transitions. [2023-12-20 14:31:16,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:31:16,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:16,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:16,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 14:31:16,878 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:16,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:16,879 INFO L85 PathProgramCache]: Analyzing trace with hash 193080110, now seen corresponding path program 1 times [2023-12-20 14:31:16,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:16,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955608452] [2023-12-20 14:31:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:16,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:16,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:31:16,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:16,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955608452] [2023-12-20 14:31:16,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955608452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:16,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:16,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:31:16,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831443334] [2023-12-20 14:31:16,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:16,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:31:16,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:16,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:31:16,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:16,921 INFO L87 Difference]: Start difference. First operand 1858 states and 3305 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:16,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:16,949 INFO L93 Difference]: Finished difference Result 2428 states and 4205 transitions. [2023-12-20 14:31:16,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:31:16,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-20 14:31:16,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:16,955 INFO L225 Difference]: With dead ends: 2428 [2023-12-20 14:31:16,957 INFO L226 Difference]: Without dead ends: 2131 [2023-12-20 14:31:16,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:16,960 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1512 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:16,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:31:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2023-12-20 14:31:16,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 2129. [2023-12-20 14:31:16,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2127 states have (on average 1.7522331922896097) internal successors, (3727), 2128 states have internal predecessors, (3727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:16,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3727 transitions. [2023-12-20 14:31:16,993 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3727 transitions. Word has length 78 [2023-12-20 14:31:16,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:16,993 INFO L495 AbstractCegarLoop]: Abstraction has 2129 states and 3727 transitions. [2023-12-20 14:31:16,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:16,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3727 transitions. [2023-12-20 14:31:16,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:31:16,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:16,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:16,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:31:16,994 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:16,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:16,994 INFO L85 PathProgramCache]: Analyzing trace with hash -217306578, now seen corresponding path program 1 times [2023-12-20 14:31:16,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:16,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428230387] [2023-12-20 14:31:16,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:16,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:31:17,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:17,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428230387] [2023-12-20 14:31:17,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428230387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:17,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:17,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:31:17,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911738363] [2023-12-20 14:31:17,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:17,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:31:17,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:17,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:31:17,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:17,034 INFO L87 Difference]: Start difference. First operand 2129 states and 3727 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:17,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:17,067 INFO L93 Difference]: Finished difference Result 3217 states and 5429 transitions. [2023-12-20 14:31:17,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:31:17,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-20 14:31:17,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:17,074 INFO L225 Difference]: With dead ends: 3217 [2023-12-20 14:31:17,074 INFO L226 Difference]: Without dead ends: 2649 [2023-12-20 14:31:17,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:17,076 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1510 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:17,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:31:17,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2023-12-20 14:31:17,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2647. [2023-12-20 14:31:17,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2647 states, 2645 states have (on average 1.7100189035916824) internal successors, (4523), 2646 states have internal predecessors, (4523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 4523 transitions. [2023-12-20 14:31:17,121 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 4523 transitions. Word has length 78 [2023-12-20 14:31:17,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:17,121 INFO L495 AbstractCegarLoop]: Abstraction has 2647 states and 4523 transitions. [2023-12-20 14:31:17,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:17,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 4523 transitions. [2023-12-20 14:31:17,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:31:17,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:17,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:17,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:31:17,122 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:17,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:17,123 INFO L85 PathProgramCache]: Analyzing trace with hash -485889746, now seen corresponding path program 1 times [2023-12-20 14:31:17,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:17,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667821951] [2023-12-20 14:31:17,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:17,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:31:17,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:17,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667821951] [2023-12-20 14:31:17,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667821951] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:17,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:17,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:31:17,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345347354] [2023-12-20 14:31:17,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:17,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:31:17,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:17,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:31:17,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:17,180 INFO L87 Difference]: Start difference. First operand 2647 states and 4523 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:17,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:17,226 INFO L93 Difference]: Finished difference Result 4723 states and 7733 transitions. [2023-12-20 14:31:17,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:31:17,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-20 14:31:17,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:17,249 INFO L225 Difference]: With dead ends: 4723 [2023-12-20 14:31:17,249 INFO L226 Difference]: Without dead ends: 3637 [2023-12-20 14:31:17,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:17,252 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 1508 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:17,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1742 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:31:17,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3637 states. [2023-12-20 14:31:17,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3637 to 3635. [2023-12-20 14:31:17,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3633 states have (on average 1.6567575006881365) internal successors, (6019), 3634 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 6019 transitions. [2023-12-20 14:31:17,318 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 6019 transitions. Word has length 78 [2023-12-20 14:31:17,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:17,319 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 6019 transitions. [2023-12-20 14:31:17,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:17,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 6019 transitions. [2023-12-20 14:31:17,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:31:17,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:17,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:17,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 14:31:17,320 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:17,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:17,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1071601874, now seen corresponding path program 1 times [2023-12-20 14:31:17,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:17,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554524060] [2023-12-20 14:31:17,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:17,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:17,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:31:17,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:17,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554524060] [2023-12-20 14:31:17,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554524060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:17,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:17,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:31:17,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366783389] [2023-12-20 14:31:17,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:17,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:31:17,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:17,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:31:17,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:17,364 INFO L87 Difference]: Start difference. First operand 3635 states and 6019 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:17,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:17,435 INFO L93 Difference]: Finished difference Result 7591 states and 12053 transitions. [2023-12-20 14:31:17,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:31:17,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-20 14:31:17,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:17,444 INFO L225 Difference]: With dead ends: 7591 [2023-12-20 14:31:17,445 INFO L226 Difference]: Without dead ends: 5517 [2023-12-20 14:31:17,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:17,449 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 1504 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:17,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:31:17,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2023-12-20 14:31:17,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 5515. [2023-12-20 14:31:17,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5515 states, 5513 states have (on average 1.599673499002358) internal successors, (8819), 5514 states have internal predecessors, (8819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:17,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 8819 transitions. [2023-12-20 14:31:17,593 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 8819 transitions. Word has length 78 [2023-12-20 14:31:17,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:17,593 INFO L495 AbstractCegarLoop]: Abstraction has 5515 states and 8819 transitions. [2023-12-20 14:31:17,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:17,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 8819 transitions. [2023-12-20 14:31:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:31:17,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:17,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:17,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:31:17,594 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:17,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash -182868434, now seen corresponding path program 1 times [2023-12-20 14:31:17,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:17,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566806547] [2023-12-20 14:31:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:17,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:17,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:31:17,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:17,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566806547] [2023-12-20 14:31:17,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566806547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:17,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:17,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:31:17,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188824699] [2023-12-20 14:31:17,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:17,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:31:17,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:17,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:31:17,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:17,641 INFO L87 Difference]: Start difference. First operand 5515 states and 8819 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:17,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:17,762 INFO L93 Difference]: Finished difference Result 13039 states and 20117 transitions. [2023-12-20 14:31:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:31:17,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-20 14:31:17,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:17,775 INFO L225 Difference]: With dead ends: 13039 [2023-12-20 14:31:17,775 INFO L226 Difference]: Without dead ends: 9085 [2023-12-20 14:31:17,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:17,782 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1502 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:17,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:31:17,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9085 states. [2023-12-20 14:31:17,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9085 to 9083. [2023-12-20 14:31:17,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9083 states, 9081 states have (on average 1.5455346327496973) internal successors, (14035), 9082 states have internal predecessors, (14035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9083 states to 9083 states and 14035 transitions. [2023-12-20 14:31:17,971 INFO L78 Accepts]: Start accepts. Automaton has 9083 states and 14035 transitions. Word has length 78 [2023-12-20 14:31:17,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:17,971 INFO L495 AbstractCegarLoop]: Abstraction has 9083 states and 14035 transitions. [2023-12-20 14:31:17,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:17,971 INFO L276 IsEmpty]: Start isEmpty. Operand 9083 states and 14035 transitions. [2023-12-20 14:31:17,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:31:17,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:17,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:17,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:31:17,972 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:17,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:17,973 INFO L85 PathProgramCache]: Analyzing trace with hash -445945810, now seen corresponding path program 1 times [2023-12-20 14:31:17,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:17,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503056376] [2023-12-20 14:31:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:17,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:18,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:31:18,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:18,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503056376] [2023-12-20 14:31:18,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503056376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:18,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:18,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:31:18,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453839631] [2023-12-20 14:31:18,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:18,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:31:18,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:18,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:31:18,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:18,012 INFO L87 Difference]: Start difference. First operand 9083 states and 14035 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:18,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:18,285 INFO L93 Difference]: Finished difference Result 23359 states and 35093 transitions. [2023-12-20 14:31:18,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:31:18,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-20 14:31:18,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:18,305 INFO L225 Difference]: With dead ends: 23359 [2023-12-20 14:31:18,305 INFO L226 Difference]: Without dead ends: 15837 [2023-12-20 14:31:18,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:18,312 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1506 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:18,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1744 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:31:18,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15837 states. [2023-12-20 14:31:18,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15837 to 15835. [2023-12-20 14:31:18,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15835 states, 15833 states have (on average 1.4968104591675615) internal successors, (23699), 15834 states have internal predecessors, (23699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:18,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15835 states to 15835 states and 23699 transitions. [2023-12-20 14:31:18,626 INFO L78 Accepts]: Start accepts. Automaton has 15835 states and 23699 transitions. Word has length 78 [2023-12-20 14:31:18,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:18,626 INFO L495 AbstractCegarLoop]: Abstraction has 15835 states and 23699 transitions. [2023-12-20 14:31:18,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:18,626 INFO L276 IsEmpty]: Start isEmpty. Operand 15835 states and 23699 transitions. [2023-12-20 14:31:18,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-20 14:31:18,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:18,627 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] [2023-12-20 14:31:18,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:31:18,627 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:18,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:18,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1780015473, now seen corresponding path program 1 times [2023-12-20 14:31:18,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:18,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104971927] [2023-12-20 14:31:18,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:18,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:31:18,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:18,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104971927] [2023-12-20 14:31:18,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104971927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:18,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:18,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 14:31:18,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971628956] [2023-12-20 14:31:18,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:18,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:31:18,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:18,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:31:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:18,727 INFO L87 Difference]: Start difference. First operand 15835 states and 23699 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:21,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:21,646 INFO L93 Difference]: Finished difference Result 18843 states and 29251 transitions. [2023-12-20 14:31:21,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:31:21,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-20 14:31:21,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:21,668 INFO L225 Difference]: With dead ends: 18843 [2023-12-20 14:31:21,669 INFO L226 Difference]: Without dead ends: 17339 [2023-12-20 14:31:21,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:21,673 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 872 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:21,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 611 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 14:31:21,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17339 states. [2023-12-20 14:31:21,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17339 to 17337. [2023-12-20 14:31:22,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17337 states, 17335 states have (on average 1.478050187481973) internal successors, (25622), 17336 states have internal predecessors, (25622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:22,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17337 states to 17337 states and 25622 transitions. [2023-12-20 14:31:22,080 INFO L78 Accepts]: Start accepts. Automaton has 17337 states and 25622 transitions. Word has length 84 [2023-12-20 14:31:22,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:22,080 INFO L495 AbstractCegarLoop]: Abstraction has 17337 states and 25622 transitions. [2023-12-20 14:31:22,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:22,080 INFO L276 IsEmpty]: Start isEmpty. Operand 17337 states and 25622 transitions. [2023-12-20 14:31:22,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:31:22,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:22,082 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] [2023-12-20 14:31:22,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:31:22,082 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:22,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:22,083 INFO L85 PathProgramCache]: Analyzing trace with hash -879019148, now seen corresponding path program 1 times [2023-12-20 14:31:22,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:22,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045523065] [2023-12-20 14:31:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:22,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:22,146 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:31:22,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:22,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045523065] [2023-12-20 14:31:22,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045523065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:22,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:22,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:31:22,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570213366] [2023-12-20 14:31:22,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:22,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:31:22,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:22,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:31:22,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:22,149 INFO L87 Difference]: Start difference. First operand 17337 states and 25622 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:24,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:24,939 INFO L93 Difference]: Finished difference Result 23347 states and 35019 transitions. [2023-12-20 14:31:24,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:31:24,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:31:24,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:24,985 INFO L225 Difference]: With dead ends: 23347 [2023-12-20 14:31:24,986 INFO L226 Difference]: Without dead ends: 20341 [2023-12-20 14:31:24,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:31:24,997 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 741 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:24,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1695 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 14:31:25,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20341 states. [2023-12-20 14:31:25,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20341 to 20341. [2023-12-20 14:31:25,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20341 states, 20339 states have (on average 1.467328777226019) internal successors, (29844), 20340 states have internal predecessors, (29844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:25,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20341 states to 20341 states and 29844 transitions. [2023-12-20 14:31:25,325 INFO L78 Accepts]: Start accepts. Automaton has 20341 states and 29844 transitions. Word has length 86 [2023-12-20 14:31:25,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:25,326 INFO L495 AbstractCegarLoop]: Abstraction has 20341 states and 29844 transitions. [2023-12-20 14:31:25,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:25,326 INFO L276 IsEmpty]: Start isEmpty. Operand 20341 states and 29844 transitions. [2023-12-20 14:31:25,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 14:31:25,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:25,327 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] [2023-12-20 14:31:25,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:31:25,327 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:25,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:25,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1959618013, now seen corresponding path program 1 times [2023-12-20 14:31:25,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:25,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359603853] [2023-12-20 14:31:25,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:25,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:31:25,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:25,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359603853] [2023-12-20 14:31:25,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359603853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:25,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:25,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:31:25,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088145396] [2023-12-20 14:31:25,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:25,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:31:25,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:25,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:31:25,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:31:25,511 INFO L87 Difference]: Start difference. First operand 20341 states and 29844 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:29,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:29,260 INFO L93 Difference]: Finished difference Result 27102 states and 39708 transitions. [2023-12-20 14:31:29,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:31:29,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-20 14:31:29,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:29,318 INFO L225 Difference]: With dead ends: 27102 [2023-12-20 14:31:29,318 INFO L226 Difference]: Without dead ends: 21092 [2023-12-20 14:31:29,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:31:29,343 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 2462 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4867 mSolverCounterSat, 695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2462 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 5562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 4867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:29,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2462 Valid, 395 Invalid, 5562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 4867 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-20 14:31:29,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21092 states. [2023-12-20 14:31:29,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21092 to 21092. [2023-12-20 14:31:29,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21092 states, 21090 states have (on average 1.4430061640587957) internal successors, (30433), 21091 states have internal predecessors, (30433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:29,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21092 states to 21092 states and 30433 transitions. [2023-12-20 14:31:29,658 INFO L78 Accepts]: Start accepts. Automaton has 21092 states and 30433 transitions. Word has length 92 [2023-12-20 14:31:29,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:29,658 INFO L495 AbstractCegarLoop]: Abstraction has 21092 states and 30433 transitions. [2023-12-20 14:31:29,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:29,658 INFO L276 IsEmpty]: Start isEmpty. Operand 21092 states and 30433 transitions. [2023-12-20 14:31:29,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:31:29,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:29,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:29,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:31:29,661 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:29,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:29,662 INFO L85 PathProgramCache]: Analyzing trace with hash 528849474, now seen corresponding path program 1 times [2023-12-20 14:31:29,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:29,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534159506] [2023-12-20 14:31:29,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:29,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:31:29,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:29,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534159506] [2023-12-20 14:31:29,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534159506] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:29,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:29,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:31:29,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163635593] [2023-12-20 14:31:29,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:29,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:31:29,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:29,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:31:29,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:31:29,829 INFO L87 Difference]: Start difference. First operand 21092 states and 30433 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:31,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:31,403 INFO L93 Difference]: Finished difference Result 119604 states and 174377 transitions. [2023-12-20 14:31:31,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:31:31,404 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 14:31:31,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:31,536 INFO L225 Difference]: With dead ends: 119604 [2023-12-20 14:31:31,536 INFO L226 Difference]: Without dead ends: 109618 [2023-12-20 14:31:31,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:31:31,559 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 9845 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9845 SdHoareTripleChecker+Valid, 4605 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:31,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9845 Valid, 4605 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:31:31,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109618 states. [2023-12-20 14:31:32,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109618 to 33252. [2023-12-20 14:31:32,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33252 states, 33250 states have (on average 1.4446015037593984) internal successors, (48033), 33251 states have internal predecessors, (48033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:32,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33252 states to 33252 states and 48033 transitions. [2023-12-20 14:31:32,680 INFO L78 Accepts]: Start accepts. Automaton has 33252 states and 48033 transitions. Word has length 100 [2023-12-20 14:31:32,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:32,680 INFO L495 AbstractCegarLoop]: Abstraction has 33252 states and 48033 transitions. [2023-12-20 14:31:32,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:32,681 INFO L276 IsEmpty]: Start isEmpty. Operand 33252 states and 48033 transitions. [2023-12-20 14:31:32,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:31:32,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:32,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:32,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:31:32,685 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:32,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:32,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1284233538, now seen corresponding path program 1 times [2023-12-20 14:31:32,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:32,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298327104] [2023-12-20 14:31:32,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:32,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:32,841 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:31:32,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:32,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298327104] [2023-12-20 14:31:32,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298327104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:32,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:32,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:31:32,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92613398] [2023-12-20 14:31:32,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:32,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:31:32,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:32,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:31:32,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:31:32,843 INFO L87 Difference]: Start difference. First operand 33252 states and 48033 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:35,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:35,395 INFO L93 Difference]: Finished difference Result 133876 states and 195113 transitions. [2023-12-20 14:31:35,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:31:35,400 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 14:31:35,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:35,597 INFO L225 Difference]: With dead ends: 133876 [2023-12-20 14:31:35,597 INFO L226 Difference]: Without dead ends: 119602 [2023-12-20 14:31:35,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:31:35,646 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 9845 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9845 SdHoareTripleChecker+Valid, 4598 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:35,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9845 Valid, 4598 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:31:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119602 states. [2023-12-20 14:31:37,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119602 to 52516. [2023-12-20 14:31:37,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52516 states, 52514 states have (on average 1.4448147160757132) internal successors, (75873), 52515 states have internal predecessors, (75873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:37,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52516 states to 52516 states and 75873 transitions. [2023-12-20 14:31:37,362 INFO L78 Accepts]: Start accepts. Automaton has 52516 states and 75873 transitions. Word has length 100 [2023-12-20 14:31:37,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:37,362 INFO L495 AbstractCegarLoop]: Abstraction has 52516 states and 75873 transitions. [2023-12-20 14:31:37,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:37,363 INFO L276 IsEmpty]: Start isEmpty. Operand 52516 states and 75873 transitions. [2023-12-20 14:31:37,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:31:37,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:37,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:37,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:31:37,368 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:37,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:37,368 INFO L85 PathProgramCache]: Analyzing trace with hash 873846850, now seen corresponding path program 1 times [2023-12-20 14:31:37,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:37,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506818560] [2023-12-20 14:31:37,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:37,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 14:31:37,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:37,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506818560] [2023-12-20 14:31:37,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506818560] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:37,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:37,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:31:37,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258615800] [2023-12-20 14:31:37,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:37,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:31:37,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:37,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:31:37,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:31:37,676 INFO L87 Difference]: Start difference. First operand 52516 states and 75873 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:40,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:40,394 INFO L93 Difference]: Finished difference Result 148148 states and 215785 transitions. [2023-12-20 14:31:40,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:31:40,394 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 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 100 [2023-12-20 14:31:40,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:40,560 INFO L225 Difference]: With dead ends: 148148 [2023-12-20 14:31:40,560 INFO L226 Difference]: Without dead ends: 133874 [2023-12-20 14:31:40,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:31:40,589 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 9868 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9868 SdHoareTripleChecker+Valid, 4510 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:40,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9868 Valid, 4510 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:31:40,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133874 states. [2023-12-20 14:31:42,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133874 to 66788. [2023-12-20 14:31:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66788 states, 66786 states have (on average 1.4455873985565837) internal successors, (96545), 66787 states have internal predecessors, (96545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:42,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66788 states to 66788 states and 96545 transitions. [2023-12-20 14:31:42,920 INFO L78 Accepts]: Start accepts. Automaton has 66788 states and 96545 transitions. Word has length 100 [2023-12-20 14:31:42,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:42,920 INFO L495 AbstractCegarLoop]: Abstraction has 66788 states and 96545 transitions. [2023-12-20 14:31:42,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:42,920 INFO L276 IsEmpty]: Start isEmpty. Operand 66788 states and 96545 transitions. [2023-12-20 14:31:42,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:31:42,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:42,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:42,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:31:42,950 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:42,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:42,950 INFO L85 PathProgramCache]: Analyzing trace with hash 605263682, now seen corresponding path program 1 times [2023-12-20 14:31:42,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:42,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481642296] [2023-12-20 14:31:42,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:42,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:43,168 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 14:31:43,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:43,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481642296] [2023-12-20 14:31:43,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481642296] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:43,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:43,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:31:43,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368787010] [2023-12-20 14:31:43,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:43,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:31:43,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:43,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:31:43,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:31:43,169 INFO L87 Difference]: Start difference. First operand 66788 states and 96545 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:46,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:46,799 INFO L93 Difference]: Finished difference Result 162420 states and 236457 transitions. [2023-12-20 14:31:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:31:46,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 100 [2023-12-20 14:31:46,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:47,033 INFO L225 Difference]: With dead ends: 162420 [2023-12-20 14:31:47,034 INFO L226 Difference]: Without dead ends: 148146 [2023-12-20 14:31:47,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:31:47,087 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 9955 mSDsluCounter, 2798 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9955 SdHoareTripleChecker+Valid, 4453 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:47,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9955 Valid, 4453 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:31:47,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148146 states. [2023-12-20 14:31:49,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148146 to 81060. [2023-12-20 14:31:49,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81060 states, 81058 states have (on average 1.4460879863801228) internal successors, (117217), 81059 states have internal predecessors, (117217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:50,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81060 states to 81060 states and 117217 transitions. [2023-12-20 14:31:50,018 INFO L78 Accepts]: Start accepts. Automaton has 81060 states and 117217 transitions. Word has length 100 [2023-12-20 14:31:50,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:50,018 INFO L495 AbstractCegarLoop]: Abstraction has 81060 states and 117217 transitions. [2023-12-20 14:31:50,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:50,018 INFO L276 IsEmpty]: Start isEmpty. Operand 81060 states and 117217 transitions. [2023-12-20 14:31:50,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:31:50,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:50,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:50,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:31:50,024 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:50,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:50,024 INFO L85 PathProgramCache]: Analyzing trace with hash 19551554, now seen corresponding path program 1 times [2023-12-20 14:31:50,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:50,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641668929] [2023-12-20 14:31:50,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:50,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:50,158 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 14:31:50,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:50,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641668929] [2023-12-20 14:31:50,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641668929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:50,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:50,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:31:50,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012920025] [2023-12-20 14:31:50,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:50,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:31:50,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:50,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:31:50,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:31:50,160 INFO L87 Difference]: Start difference. First operand 81060 states and 117217 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:54,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:31:54,053 INFO L93 Difference]: Finished difference Result 176692 states and 257129 transitions. [2023-12-20 14:31:54,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:31:54,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 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 100 [2023-12-20 14:31:54,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:31:54,246 INFO L225 Difference]: With dead ends: 176692 [2023-12-20 14:31:54,247 INFO L226 Difference]: Without dead ends: 162418 [2023-12-20 14:31:54,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:31:54,290 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 10036 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10036 SdHoareTripleChecker+Valid, 4511 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:31:54,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10036 Valid, 4511 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:31:54,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162418 states. [2023-12-20 14:31:57,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162418 to 95332. [2023-12-20 14:31:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95332 states, 95330 states have (on average 1.446438686667366) internal successors, (137889), 95331 states have internal predecessors, (137889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:57,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95332 states to 95332 states and 137889 transitions. [2023-12-20 14:31:57,568 INFO L78 Accepts]: Start accepts. Automaton has 95332 states and 137889 transitions. Word has length 100 [2023-12-20 14:31:57,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:31:57,568 INFO L495 AbstractCegarLoop]: Abstraction has 95332 states and 137889 transitions. [2023-12-20 14:31:57,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:31:57,568 INFO L276 IsEmpty]: Start isEmpty. Operand 95332 states and 137889 transitions. [2023-12-20 14:31:57,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:31:57,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:31:57,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:31:57,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:31:57,574 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:31:57,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:31:57,574 INFO L85 PathProgramCache]: Analyzing trace with hash 908284994, now seen corresponding path program 1 times [2023-12-20 14:31:57,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:31:57,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502939895] [2023-12-20 14:31:57,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:31:57,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:31:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:31:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:31:57,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:31:57,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502939895] [2023-12-20 14:31:57,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502939895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:31:57,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:31:57,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:31:57,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039797818] [2023-12-20 14:31:57,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:31:57,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:31:57,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:31:57,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:31:57,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:31:57,836 INFO L87 Difference]: Start difference. First operand 95332 states and 137889 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:02,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:32:02,279 INFO L93 Difference]: Finished difference Result 190964 states and 277801 transitions. [2023-12-20 14:32:02,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:32:02,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 100 [2023-12-20 14:32:02,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:32:02,514 INFO L225 Difference]: With dead ends: 190964 [2023-12-20 14:32:02,514 INFO L226 Difference]: Without dead ends: 176690 [2023-12-20 14:32:02,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:32:02,552 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 9909 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9909 SdHoareTripleChecker+Valid, 4520 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:32:02,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9909 Valid, 4520 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:32:02,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176690 states. [2023-12-20 14:32:06,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176690 to 109604. [2023-12-20 14:32:06,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109604 states, 109602 states have (on average 1.446698052955238) internal successors, (158561), 109603 states have internal predecessors, (158561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:06,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109604 states to 109604 states and 158561 transitions. [2023-12-20 14:32:06,561 INFO L78 Accepts]: Start accepts. Automaton has 109604 states and 158561 transitions. Word has length 100 [2023-12-20 14:32:06,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:32:06,561 INFO L495 AbstractCegarLoop]: Abstraction has 109604 states and 158561 transitions. [2023-12-20 14:32:06,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:06,561 INFO L276 IsEmpty]: Start isEmpty. Operand 109604 states and 158561 transitions. [2023-12-20 14:32:06,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:32:06,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:32:06,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:32:06,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:32:06,567 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:32:06,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:32:06,567 INFO L85 PathProgramCache]: Analyzing trace with hash 645207618, now seen corresponding path program 1 times [2023-12-20 14:32:06,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:32:06,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938088371] [2023-12-20 14:32:06,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:06,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:32:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 14:32:06,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:32:06,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938088371] [2023-12-20 14:32:06,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938088371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:32:06,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:32:06,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:32:06,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608303899] [2023-12-20 14:32:06,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:32:06,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:32:06,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:32:06,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:32:06,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:32:06,682 INFO L87 Difference]: Start difference. First operand 109604 states and 158561 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:11,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:32:11,752 INFO L93 Difference]: Finished difference Result 205236 states and 298473 transitions. [2023-12-20 14:32:11,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:32:11,753 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 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 100 [2023-12-20 14:32:11,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:32:12,155 INFO L225 Difference]: With dead ends: 205236 [2023-12-20 14:32:12,155 INFO L226 Difference]: Without dead ends: 190962 [2023-12-20 14:32:12,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:32:12,196 INFO L413 NwaCegarLoop]: 1652 mSDtfsCounter, 9791 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9791 SdHoareTripleChecker+Valid, 4715 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:32:12,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9791 Valid, 4715 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:32:12,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190962 states. [2023-12-20 14:32:16,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190962 to 123876. [2023-12-20 14:32:16,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123876 states, 123874 states have (on average 1.446897654067843) internal successors, (179233), 123875 states have internal predecessors, (179233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:16,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123876 states to 123876 states and 179233 transitions. [2023-12-20 14:32:16,600 INFO L78 Accepts]: Start accepts. Automaton has 123876 states and 179233 transitions. Word has length 100 [2023-12-20 14:32:16,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:32:16,600 INFO L495 AbstractCegarLoop]: Abstraction has 123876 states and 179233 transitions. [2023-12-20 14:32:16,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:16,600 INFO L276 IsEmpty]: Start isEmpty. Operand 123876 states and 179233 transitions. [2023-12-20 14:32:16,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 14:32:16,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:32:16,605 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:32:16,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:32:16,605 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:32:16,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:32:16,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1809850130, now seen corresponding path program 1 times [2023-12-20 14:32:16,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:32:16,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680250280] [2023-12-20 14:32:16,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:16,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:32:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:16,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:32:16,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680250280] [2023-12-20 14:32:16,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680250280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:32:16,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:32:16,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:32:16,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235973970] [2023-12-20 14:32:16,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:32:16,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:32:16,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:32:16,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:32:16,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:32:16,928 INFO L87 Difference]: Start difference. First operand 123876 states and 179233 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:20,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:32:20,359 INFO L93 Difference]: Finished difference Result 240936 states and 348899 transitions. [2023-12-20 14:32:20,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:32:20,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-20 14:32:20,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:32:20,538 INFO L225 Difference]: With dead ends: 240936 [2023-12-20 14:32:20,538 INFO L226 Difference]: Without dead ends: 123878 [2023-12-20 14:32:20,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:32:20,639 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 61 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:32:20,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3191 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:32:20,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123878 states. [2023-12-20 14:32:24,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123878 to 123876. [2023-12-20 14:32:24,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123876 states, 123874 states have (on average 1.4342396305923761) internal successors, (177665), 123875 states have internal predecessors, (177665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:24,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123876 states to 123876 states and 177665 transitions. [2023-12-20 14:32:24,918 INFO L78 Accepts]: Start accepts. Automaton has 123876 states and 177665 transitions. Word has length 101 [2023-12-20 14:32:24,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:32:24,918 INFO L495 AbstractCegarLoop]: Abstraction has 123876 states and 177665 transitions. [2023-12-20 14:32:24,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:24,918 INFO L276 IsEmpty]: Start isEmpty. Operand 123876 states and 177665 transitions. [2023-12-20 14:32:24,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 14:32:24,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:32:24,923 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:32:24,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:32:24,923 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:32:24,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:32:24,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1372280522, now seen corresponding path program 1 times [2023-12-20 14:32:24,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:32:24,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196583341] [2023-12-20 14:32:24,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:24,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:32:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:25,150 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:25,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:32:25,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196583341] [2023-12-20 14:32:25,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196583341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:32:25,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:32:25,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:32:25,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988055061] [2023-12-20 14:32:25,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:32:25,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:32:25,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:32:25,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:32:25,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:32:25,152 INFO L87 Difference]: Start difference. First operand 123876 states and 177665 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:26,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:32:26,661 INFO L93 Difference]: Finished difference Result 166334 states and 239162 transitions. [2023-12-20 14:32:26,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:32:26,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-20 14:32:26,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:32:26,715 INFO L225 Difference]: With dead ends: 166334 [2023-12-20 14:32:26,715 INFO L226 Difference]: Without dead ends: 49276 [2023-12-20 14:32:26,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:32:26,743 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 55 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:32:26,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3188 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:32:26,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49276 states. [2023-12-20 14:32:28,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49276 to 49269. [2023-12-20 14:32:28,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49269 states, 49267 states have (on average 1.4312623053971218) internal successors, (70514), 49268 states have internal predecessors, (70514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49269 states to 49269 states and 70514 transitions. [2023-12-20 14:32:28,300 INFO L78 Accepts]: Start accepts. Automaton has 49269 states and 70514 transitions. Word has length 102 [2023-12-20 14:32:28,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:32:28,301 INFO L495 AbstractCegarLoop]: Abstraction has 49269 states and 70514 transitions. [2023-12-20 14:32:28,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:28,301 INFO L276 IsEmpty]: Start isEmpty. Operand 49269 states and 70514 transitions. [2023-12-20 14:32:28,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 14:32:28,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:32:28,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:32:28,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 14:32:28,303 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:32:28,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:32:28,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1304981984, now seen corresponding path program 1 times [2023-12-20 14:32:28,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:32:28,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44948986] [2023-12-20 14:32:28,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:28,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:32:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:28,361 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:28,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:32:28,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44948986] [2023-12-20 14:32:28,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44948986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:32:28,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:32:28,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:32:28,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541686822] [2023-12-20 14:32:28,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:32:28,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:32:28,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:32:28,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:32:28,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:32:28,362 INFO L87 Difference]: Start difference. First operand 49269 states and 70514 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:29,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:32:29,039 INFO L93 Difference]: Finished difference Result 70489 states and 100980 transitions. [2023-12-20 14:32:29,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:32:29,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-20 14:32:29,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:32:29,071 INFO L225 Difference]: With dead ends: 70489 [2023-12-20 14:32:29,071 INFO L226 Difference]: Without dead ends: 28055 [2023-12-20 14:32:29,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:32:29,094 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 57 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:32:29,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 3167 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:32:29,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28055 states. [2023-12-20 14:32:29,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28055 to 28053. [2023-12-20 14:32:29,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28053 states, 28051 states have (on average 1.4180599622116858) internal successors, (39778), 28052 states have internal predecessors, (39778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:29,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28053 states to 28053 states and 39778 transitions. [2023-12-20 14:32:29,985 INFO L78 Accepts]: Start accepts. Automaton has 28053 states and 39778 transitions. Word has length 103 [2023-12-20 14:32:29,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:32:29,985 INFO L495 AbstractCegarLoop]: Abstraction has 28053 states and 39778 transitions. [2023-12-20 14:32:29,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:29,985 INFO L276 IsEmpty]: Start isEmpty. Operand 28053 states and 39778 transitions. [2023-12-20 14:32:29,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-20 14:32:29,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:32:29,987 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:32:29,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 14:32:29,987 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:32:29,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:32:29,988 INFO L85 PathProgramCache]: Analyzing trace with hash 186281518, now seen corresponding path program 1 times [2023-12-20 14:32:29,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:32:29,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871239287] [2023-12-20 14:32:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:29,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:32:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:30,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:32:30,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871239287] [2023-12-20 14:32:30,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871239287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:32:30,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:32:30,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:32:30,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283799740] [2023-12-20 14:32:30,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:32:30,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:32:30,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:32:30,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:32:30,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:32:30,071 INFO L87 Difference]: Start difference. First operand 28053 states and 39778 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:30,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:32:30,398 INFO L93 Difference]: Finished difference Result 38665 states and 54876 transitions. [2023-12-20 14:32:30,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:32:30,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-20 14:32:30,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:32:30,417 INFO L225 Difference]: With dead ends: 38665 [2023-12-20 14:32:30,417 INFO L226 Difference]: Without dead ends: 17447 [2023-12-20 14:32:30,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:32:30,431 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 54 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:32:30,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3152 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:32:30,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17447 states. [2023-12-20 14:32:30,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17447 to 17445. [2023-12-20 14:32:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17445 states, 17443 states have (on average 1.4072120621452733) internal successors, (24546), 17444 states have internal predecessors, (24546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:30,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17445 states to 17445 states and 24546 transitions. [2023-12-20 14:32:30,890 INFO L78 Accepts]: Start accepts. Automaton has 17445 states and 24546 transitions. Word has length 105 [2023-12-20 14:32:30,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:32:30,891 INFO L495 AbstractCegarLoop]: Abstraction has 17445 states and 24546 transitions. [2023-12-20 14:32:30,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:30,891 INFO L276 IsEmpty]: Start isEmpty. Operand 17445 states and 24546 transitions. [2023-12-20 14:32:30,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 14:32:30,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:32:30,892 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:32:30,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 14:32:30,892 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:32:30,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:32:30,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1130957828, now seen corresponding path program 1 times [2023-12-20 14:32:30,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:32:30,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054500460] [2023-12-20 14:32:30,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:30,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:32:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:30,952 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:30,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:32:30,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054500460] [2023-12-20 14:32:30,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054500460] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:32:30,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:32:30,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:32:30,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151730695] [2023-12-20 14:32:30,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:32:30,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:32:30,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:32:30,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:32:30,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:32:30,954 INFO L87 Difference]: Start difference. First operand 17445 states and 24546 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:31,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:32:31,129 INFO L93 Difference]: Finished difference Result 22753 states and 32028 transitions. [2023-12-20 14:32:31,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:32:31,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2023-12-20 14:32:31,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:32:31,141 INFO L225 Difference]: With dead ends: 22753 [2023-12-20 14:32:31,141 INFO L226 Difference]: Without dead ends: 12143 [2023-12-20 14:32:31,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:32:31,149 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 51 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:32:31,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 3137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:32:31,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12143 states. [2023-12-20 14:32:31,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12143 to 12141. [2023-12-20 14:32:31,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12141 states, 12139 states have (on average 1.4002800889694373) internal successors, (16998), 12140 states have internal predecessors, (16998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:31,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12141 states to 12141 states and 16998 transitions. [2023-12-20 14:32:31,438 INFO L78 Accepts]: Start accepts. Automaton has 12141 states and 16998 transitions. Word has length 107 [2023-12-20 14:32:31,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:32:31,438 INFO L495 AbstractCegarLoop]: Abstraction has 12141 states and 16998 transitions. [2023-12-20 14:32:31,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:31,438 INFO L276 IsEmpty]: Start isEmpty. Operand 12141 states and 16998 transitions. [2023-12-20 14:32:31,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-20 14:32:31,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:32:31,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:32:31,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 14:32:31,440 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:32:31,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:32:31,440 INFO L85 PathProgramCache]: Analyzing trace with hash 781640522, now seen corresponding path program 1 times [2023-12-20 14:32:31,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:32:31,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485987361] [2023-12-20 14:32:31,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:31,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:32:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:31,497 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:31,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:32:31,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485987361] [2023-12-20 14:32:31,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485987361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:32:31,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:32:31,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:32:31,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698019225] [2023-12-20 14:32:31,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:32:31,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:32:31,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:32:31,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:32:31,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:32:31,498 INFO L87 Difference]: Start difference. First operand 12141 states and 16998 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:31,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:32:31,598 INFO L93 Difference]: Finished difference Result 14797 states and 20706 transitions. [2023-12-20 14:32:31,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:32:31,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-20 14:32:31,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:32:31,606 INFO L225 Difference]: With dead ends: 14797 [2023-12-20 14:32:31,607 INFO L226 Difference]: Without dead ends: 9491 [2023-12-20 14:32:31,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:32:31,611 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 48 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:32:31,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3122 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:32:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9491 states. [2023-12-20 14:32:31,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9491 to 9489. [2023-12-20 14:32:31,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9489 states, 9487 states have (on average 1.3974913038895331) internal successors, (13258), 9488 states have internal predecessors, (13258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9489 states to 9489 states and 13258 transitions. [2023-12-20 14:32:31,750 INFO L78 Accepts]: Start accepts. Automaton has 9489 states and 13258 transitions. Word has length 109 [2023-12-20 14:32:31,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:32:31,750 INFO L495 AbstractCegarLoop]: Abstraction has 9489 states and 13258 transitions. [2023-12-20 14:32:31,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:31,750 INFO L276 IsEmpty]: Start isEmpty. Operand 9489 states and 13258 transitions. [2023-12-20 14:32:31,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 14:32:31,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:32:31,751 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:32:31,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-20 14:32:31,751 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:32:31,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:32:31,752 INFO L85 PathProgramCache]: Analyzing trace with hash 789257240, now seen corresponding path program 1 times [2023-12-20 14:32:31,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:32:31,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155271296] [2023-12-20 14:32:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:31,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:32:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:31,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:32:31,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155271296] [2023-12-20 14:32:31,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155271296] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:32:31,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:32:31,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:32:31,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972952858] [2023-12-20 14:32:31,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:32:31,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:32:31,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:32:31,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:32:31,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:32:31,810 INFO L87 Difference]: Start difference. First operand 9489 states and 13258 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:31,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:32:31,876 INFO L93 Difference]: Finished difference Result 10819 states and 15096 transitions. [2023-12-20 14:32:31,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:32:31,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2023-12-20 14:32:31,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:32:31,883 INFO L225 Difference]: With dead ends: 10819 [2023-12-20 14:32:31,883 INFO L226 Difference]: Without dead ends: 8165 [2023-12-20 14:32:31,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:32:31,885 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 45 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:32:31,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3107 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:32:31,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8165 states. [2023-12-20 14:32:31,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8165 to 8163. [2023-12-20 14:32:31,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8163 states, 8161 states have (on average 1.397500306335008) internal successors, (11405), 8162 states have internal predecessors, (11405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:31,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8163 states to 8163 states and 11405 transitions. [2023-12-20 14:32:31,979 INFO L78 Accepts]: Start accepts. Automaton has 8163 states and 11405 transitions. Word has length 111 [2023-12-20 14:32:31,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:32:31,979 INFO L495 AbstractCegarLoop]: Abstraction has 8163 states and 11405 transitions. [2023-12-20 14:32:31,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:31,979 INFO L276 IsEmpty]: Start isEmpty. Operand 8163 states and 11405 transitions. [2023-12-20 14:32:31,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-20 14:32:31,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:32:31,982 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:32:31,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 14:32:31,982 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:32:31,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:32:31,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1534885478, now seen corresponding path program 1 times [2023-12-20 14:32:31,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:32:31,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163033260] [2023-12-20 14:32:31,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:31,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:32:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:32:32,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:32:32,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163033260] [2023-12-20 14:32:32,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163033260] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:32:32,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694028052] [2023-12-20 14:32:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:32,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:32:32,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:32:32,148 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:32:32,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 14:32:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:32,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 14:32:32,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:32:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:32:32,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:32:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:32:32,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694028052] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:32:32,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:32:32,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-12-20 14:32:32,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109533576] [2023-12-20 14:32:32,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:32:32,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:32:32,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:32:32,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:32:32,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:32:32,681 INFO L87 Difference]: Start difference. First operand 8163 states and 11405 transitions. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:32,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:32:32,870 INFO L93 Difference]: Finished difference Result 11370 states and 15706 transitions. [2023-12-20 14:32:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 14:32:32,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-20 14:32:32,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:32:32,879 INFO L225 Difference]: With dead ends: 11370 [2023-12-20 14:32:32,880 INFO L226 Difference]: Without dead ends: 10042 [2023-12-20 14:32:32,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:32:32,882 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 3094 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3094 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:32:32,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3094 Valid, 3396 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:32:32,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10042 states. [2023-12-20 14:32:33,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10042 to 9955. [2023-12-20 14:32:33,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9955 states, 9953 states have (on average 1.3761679895508891) internal successors, (13697), 9954 states have internal predecessors, (13697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:33,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9955 states to 9955 states and 13697 transitions. [2023-12-20 14:32:33,040 INFO L78 Accepts]: Start accepts. Automaton has 9955 states and 13697 transitions. Word has length 113 [2023-12-20 14:32:33,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:32:33,040 INFO L495 AbstractCegarLoop]: Abstraction has 9955 states and 13697 transitions. [2023-12-20 14:32:33,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:33,040 INFO L276 IsEmpty]: Start isEmpty. Operand 9955 states and 13697 transitions. [2023-12-20 14:32:33,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-20 14:32:33,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:32:33,041 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:32:33,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 14:32:33,247 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,SelfDestructingSolverStorable31 [2023-12-20 14:32:33,247 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:32:33,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:32:33,247 INFO L85 PathProgramCache]: Analyzing trace with hash -331751178, now seen corresponding path program 1 times [2023-12-20 14:32:33,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:32:33,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651189813] [2023-12-20 14:32:33,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:33,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:32:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:34,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:32:34,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651189813] [2023-12-20 14:32:34,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651189813] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:32:34,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427275423] [2023-12-20 14:32:34,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:34,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:32:34,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:32:34,221 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:32:34,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 14:32:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:34,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-20 14:32:34,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:32:34,811 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:34,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:32:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:35,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427275423] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:32:35,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:32:35,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-20 14:32:35,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916753867] [2023-12-20 14:32:35,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:32:35,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 14:32:35,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:32:35,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 14:32:35,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2023-12-20 14:32:35,810 INFO L87 Difference]: Start difference. First operand 9955 states and 13697 transitions. Second operand has 28 states, 28 states have (on average 10.535714285714286) internal successors, (295), 27 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:37,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:32:37,998 INFO L93 Difference]: Finished difference Result 23272 states and 31173 transitions. [2023-12-20 14:32:37,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-20 14:32:37,999 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.535714285714286) internal successors, (295), 27 states have internal predecessors, (295), 0 states have call successors, (0), 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 114 [2023-12-20 14:32:37,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:32:38,018 INFO L225 Difference]: With dead ends: 23272 [2023-12-20 14:32:38,018 INFO L226 Difference]: Without dead ends: 20267 [2023-12-20 14:32:38,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=665, Invalid=2757, Unknown=0, NotChecked=0, Total=3422 [2023-12-20 14:32:38,026 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 19429 mSDsluCounter, 6896 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19429 SdHoareTripleChecker+Valid, 8435 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:32:38,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19429 Valid, 8435 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:32:38,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20267 states. [2023-12-20 14:32:38,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20267 to 19311. [2023-12-20 14:32:38,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19311 states, 19309 states have (on average 1.3429488839401316) internal successors, (25931), 19310 states have internal predecessors, (25931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:38,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19311 states to 19311 states and 25931 transitions. [2023-12-20 14:32:38,517 INFO L78 Accepts]: Start accepts. Automaton has 19311 states and 25931 transitions. Word has length 114 [2023-12-20 14:32:38,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:32:38,518 INFO L495 AbstractCegarLoop]: Abstraction has 19311 states and 25931 transitions. [2023-12-20 14:32:38,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.535714285714286) internal successors, (295), 27 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 19311 states and 25931 transitions. [2023-12-20 14:32:38,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-20 14:32:38,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:32:38,519 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:32:38,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 14:32:38,724 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,SelfDestructingSolverStorable32 [2023-12-20 14:32:38,725 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:32:38,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:32:38,726 INFO L85 PathProgramCache]: Analyzing trace with hash 677823556, now seen corresponding path program 1 times [2023-12-20 14:32:38,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:32:38,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396827094] [2023-12-20 14:32:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:38,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:32:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:40,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:32:40,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396827094] [2023-12-20 14:32:40,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396827094] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:32:40,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554956226] [2023-12-20 14:32:40,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:40,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:32:40,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:32:40,688 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:32:40,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 14:32:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:40,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-20 14:32:40,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:32:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:41,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:32:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:41,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554956226] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:32:41,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:32:41,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-20 14:32:41,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640656311] [2023-12-20 14:32:41,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:32:41,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 14:32:41,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:32:41,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 14:32:41,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2023-12-20 14:32:41,998 INFO L87 Difference]: Start difference. First operand 19311 states and 25931 transitions. Second operand has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:45,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:32:45,987 INFO L93 Difference]: Finished difference Result 59957 states and 79020 transitions. [2023-12-20 14:32:45,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-20 14:32:45,987 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 0 states have call successors, (0), 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 114 [2023-12-20 14:32:45,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:32:46,029 INFO L225 Difference]: With dead ends: 59957 [2023-12-20 14:32:46,029 INFO L226 Difference]: Without dead ends: 47531 [2023-12-20 14:32:46,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=739, Invalid=3043, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 14:32:46,040 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 19392 mSDsluCounter, 7018 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19392 SdHoareTripleChecker+Valid, 8547 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:32:46,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19392 Valid, 8547 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:32:46,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47531 states. [2023-12-20 14:32:47,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47531 to 45100. [2023-12-20 14:32:47,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45100 states, 45098 states have (on average 1.312985054769613) internal successors, (59213), 45099 states have internal predecessors, (59213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45100 states to 45100 states and 59213 transitions. [2023-12-20 14:32:47,471 INFO L78 Accepts]: Start accepts. Automaton has 45100 states and 59213 transitions. Word has length 114 [2023-12-20 14:32:47,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:32:47,471 INFO L495 AbstractCegarLoop]: Abstraction has 45100 states and 59213 transitions. [2023-12-20 14:32:47,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:47,471 INFO L276 IsEmpty]: Start isEmpty. Operand 45100 states and 59213 transitions. [2023-12-20 14:32:47,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 14:32:47,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:32:47,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:32:47,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 14:32:47,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:32:47,679 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:32:47,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:32:47,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1905869276, now seen corresponding path program 1 times [2023-12-20 14:32:47,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:32:47,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408327973] [2023-12-20 14:32:47,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:47,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:32:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:48,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:32:48,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408327973] [2023-12-20 14:32:48,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408327973] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:32:48,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546722959] [2023-12-20 14:32:48,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:48,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:32:48,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:32:48,299 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:32:48,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 14:32:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:48,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 14:32:48,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:32:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:49,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:32:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:50,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546722959] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:32:50,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:32:50,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-20 14:32:50,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003185537] [2023-12-20 14:32:50,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:32:50,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 14:32:50,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:32:50,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 14:32:50,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2023-12-20 14:32:50,040 INFO L87 Difference]: Start difference. First operand 45100 states and 59213 transitions. Second operand has 28 states, 28 states have (on average 10.857142857142858) internal successors, (304), 27 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:54,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:32:54,369 INFO L93 Difference]: Finished difference Result 129020 states and 168275 transitions. [2023-12-20 14:32:54,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-20 14:32:54,370 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.857142857142858) internal successors, (304), 27 states have internal predecessors, (304), 0 states have call successors, (0), 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 115 [2023-12-20 14:32:54,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:32:54,697 INFO L225 Difference]: With dead ends: 129020 [2023-12-20 14:32:54,698 INFO L226 Difference]: Without dead ends: 94591 [2023-12-20 14:32:54,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=684, Invalid=2976, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 14:32:54,718 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 22235 mSDsluCounter, 10094 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22235 SdHoareTripleChecker+Valid, 11667 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:32:54,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22235 Valid, 11667 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:32:54,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94591 states. [2023-12-20 14:32:57,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94591 to 80933. [2023-12-20 14:32:57,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80933 states, 80931 states have (on average 1.3026899457562615) internal successors, (105428), 80932 states have internal predecessors, (105428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:57,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80933 states to 80933 states and 105428 transitions. [2023-12-20 14:32:57,683 INFO L78 Accepts]: Start accepts. Automaton has 80933 states and 105428 transitions. Word has length 115 [2023-12-20 14:32:57,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:32:57,684 INFO L495 AbstractCegarLoop]: Abstraction has 80933 states and 105428 transitions. [2023-12-20 14:32:57,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.857142857142858) internal successors, (304), 27 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:32:57,684 INFO L276 IsEmpty]: Start isEmpty. Operand 80933 states and 105428 transitions. [2023-12-20 14:32:57,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 14:32:57,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:32:57,686 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:32:57,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 14:32:57,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:32:57,893 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:32:57,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:32:57,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1853514788, now seen corresponding path program 1 times [2023-12-20 14:32:57,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:32:57,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444508671] [2023-12-20 14:32:57,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:57,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:32:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:58,383 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:58,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:32:58,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444508671] [2023-12-20 14:32:58,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444508671] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:32:58,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617950853] [2023-12-20 14:32:58,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:32:58,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:32:58,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:32:58,397 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:32:58,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 14:32:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:32:58,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:32:58,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:32:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:32:59,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:33:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:33:00,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617950853] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:33:00,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:33:00,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-20 14:33:00,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562944082] [2023-12-20 14:33:00,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:33:00,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 14:33:00,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:33:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 14:33:00,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-12-20 14:33:00,208 INFO L87 Difference]: Start difference. First operand 80933 states and 105428 transitions. Second operand has 31 states, 31 states have (on average 10.225806451612904) internal successors, (317), 31 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:33:06,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:33:06,838 INFO L93 Difference]: Finished difference Result 223327 states and 288094 transitions. [2023-12-20 14:33:06,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 14:33:06,839 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.225806451612904) internal successors, (317), 31 states have internal predecessors, (317), 0 states have call successors, (0), 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 115 [2023-12-20 14:33:06,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:33:07,016 INFO L225 Difference]: With dead ends: 223327 [2023-12-20 14:33:07,017 INFO L226 Difference]: Without dead ends: 149483 [2023-12-20 14:33:07,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1433 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1213, Invalid=4793, Unknown=0, NotChecked=0, Total=6006 [2023-12-20 14:33:07,071 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 27201 mSDsluCounter, 9934 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27201 SdHoareTripleChecker+Valid, 11487 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:33:07,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27201 Valid, 11487 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:33:07,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149483 states.