/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 00:16:38,957 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 00:16:39,024 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 00:16:39,028 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 00:16:39,028 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 00:16:39,049 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 00:16:39,049 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 00:16:39,050 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 00:16:39,050 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 00:16:39,053 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 00:16:39,053 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 00:16:39,053 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 00:16:39,054 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 00:16:39,055 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 00:16:39,055 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 00:16:39,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 00:16:39,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 00:16:39,055 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 00:16:39,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 00:16:39,056 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 00:16:39,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 00:16:39,057 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 00:16:39,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 00:16:39,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 00:16:39,057 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 00:16:39,057 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 00:16:39,057 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 00:16:39,058 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 00:16:39,058 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 00:16:39,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 00:16:39,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 00:16:39,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 00:16:39,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:16:39,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 00:16:39,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 00:16:39,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 00:16:39,059 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 00:16:39,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 00:16:39,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 00:16:39,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 00:16:39,060 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 00:16:39,060 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 00:16:39,060 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 00:16:39,060 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 00:16:39,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 00:16:39,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 00:16:39,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 00:16:39,286 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 00:16:39,287 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 00:16:39,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-19 00:16:40,565 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 00:16:40,906 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 00:16:40,907 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-19 00:16:40,933 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58da66b21/b27c3c069ae44f08826ba854522e609f/FLAG58fd6ccdf [2023-12-19 00:16:40,947 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58da66b21/b27c3c069ae44f08826ba854522e609f [2023-12-19 00:16:40,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 00:16:40,950 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 00:16:40,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 00:16:40,952 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 00:16:40,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 00:16:40,968 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:16:40" (1/1) ... [2023-12-19 00:16:40,969 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14458047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:40, skipping insertion in model container [2023-12-19 00:16:40,969 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:16:40" (1/1) ... [2023-12-19 00:16:41,071 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 00:16:41,304 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.5.1.ufo.UNBOUNDED.pals+Problem12_label05.c[11705,11718] [2023-12-19 00:16:41,362 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.5.1.ufo.UNBOUNDED.pals+Problem12_label05.c[18641,18654] [2023-12-19 00:16:41,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:16:41,854 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 00:16:41,884 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.5.1.ufo.UNBOUNDED.pals+Problem12_label05.c[11705,11718] [2023-12-19 00:16:41,896 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.5.1.ufo.UNBOUNDED.pals+Problem12_label05.c[18641,18654] [2023-12-19 00:16:42,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:16:42,207 INFO L206 MainTranslator]: Completed translation [2023-12-19 00:16:42,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:42 WrapperNode [2023-12-19 00:16:42,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 00:16:42,209 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 00:16:42,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 00:16:42,209 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 00:16:42,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:42" (1/1) ... [2023-12-19 00:16:42,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:42" (1/1) ... [2023-12-19 00:16:42,493 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5093 [2023-12-19 00:16:42,493 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 00:16:42,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 00:16:42,494 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 00:16:42,494 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 00:16:42,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:42" (1/1) ... [2023-12-19 00:16:42,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:42" (1/1) ... [2023-12-19 00:16:42,546 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:42" (1/1) ... [2023-12-19 00:16:42,663 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]. [2023-12-19 00:16:42,664 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:42" (1/1) ... [2023-12-19 00:16:42,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:42" (1/1) ... [2023-12-19 00:16:42,774 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:42" (1/1) ... [2023-12-19 00:16:42,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:42" (1/1) ... [2023-12-19 00:16:42,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:42" (1/1) ... [2023-12-19 00:16:42,850 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:42" (1/1) ... [2023-12-19 00:16:42,933 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 00:16:42,935 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 00:16:42,935 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 00:16:42,935 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 00:16:42,936 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:42" (1/1) ... [2023-12-19 00:16:42,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:16:42,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:16:42,958 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) [2023-12-19 00:16:42,982 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 [2023-12-19 00:16:42,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 00:16:42,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 00:16:42,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 00:16:42,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 00:16:43,076 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 00:16:43,078 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 00:16:46,165 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 00:16:46,268 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 00:16:46,268 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 00:16:46,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:16:46 BoogieIcfgContainer [2023-12-19 00:16:46,268 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 00:16:46,270 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 00:16:46,270 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 00:16:46,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 00:16:46,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:16:40" (1/3) ... [2023-12-19 00:16:46,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571d9b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:16:46, skipping insertion in model container [2023-12-19 00:16:46,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:16:42" (2/3) ... [2023-12-19 00:16:46,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571d9b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:16:46, skipping insertion in model container [2023-12-19 00:16:46,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:16:46" (3/3) ... [2023-12-19 00:16:46,275 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-19 00:16:46,286 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 00:16:46,287 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 00:16:46,342 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 00:16:46,348 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;@1f82b9b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 00:16:46,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 00:16:46,354 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-19 00:16:46,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:46,360 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] [2023-12-19 00:16:46,360 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:46,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:46,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1695125417, now seen corresponding path program 1 times [2023-12-19 00:16:46,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:46,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314032899] [2023-12-19 00:16:46,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:46,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:46,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:46,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:46,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314032899] [2023-12-19 00:16:46,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314032899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:46,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:46,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 00:16:46,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695496483] [2023-12-19 00:16:46,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:46,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 00:16:46,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:46,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 00:16:46,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 00:16:46,543 INFO L87 Difference]: Start difference. First operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:46,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:46,611 INFO L93 Difference]: Finished difference Result 1636 states and 3221 transitions. [2023-12-19 00:16:46,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 00:16:46,613 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-19 00:16:46,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:46,625 INFO L225 Difference]: With dead ends: 1636 [2023-12-19 00:16:46,626 INFO L226 Difference]: Without dead ends: 832 [2023-12-19 00:16:46,630 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 [2023-12-19 00:16:46,632 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:46,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1573 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:16:46,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-19 00:16:46,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2023-12-19 00:16:46,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 830 states have (on average 1.8963855421686746) internal successors, (1574), 831 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:46,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1574 transitions. [2023-12-19 00:16:46,685 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1574 transitions. Word has length 21 [2023-12-19 00:16:46,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:46,686 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1574 transitions. [2023-12-19 00:16:46,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:46,686 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1574 transitions. [2023-12-19 00:16:46,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-19 00:16:46,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:46,687 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] [2023-12-19 00:16:46,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 00:16:46,687 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:46,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash 106777515, now seen corresponding path program 1 times [2023-12-19 00:16:46,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:46,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419419297] [2023-12-19 00:16:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:46,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:46,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:46,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:46,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419419297] [2023-12-19 00:16:46,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419419297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:46,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:46,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:16:46,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789957068] [2023-12-19 00:16:46,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:46,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:16:46,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:46,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:16:46,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:16:46,880 INFO L87 Difference]: Start difference. First operand 832 states and 1574 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:46,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:46,955 INFO L93 Difference]: Finished difference Result 878 states and 1646 transitions. [2023-12-19 00:16:46,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:16:46,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-19 00:16:46,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:46,960 INFO L225 Difference]: With dead ends: 878 [2023-12-19 00:16:46,960 INFO L226 Difference]: Without dead ends: 832 [2023-12-19 00:16:46,961 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 [2023-12-19 00:16:46,961 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 0 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4678 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:46,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4678 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:16:46,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-19 00:16:46,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2023-12-19 00:16:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 830 states have (on average 1.8590361445783132) internal successors, (1543), 831 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1543 transitions. [2023-12-19 00:16:46,976 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1543 transitions. Word has length 21 [2023-12-19 00:16:46,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:46,976 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1543 transitions. [2023-12-19 00:16:46,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:46,977 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1543 transitions. [2023-12-19 00:16:46,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-19 00:16:46,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:46,978 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] [2023-12-19 00:16:46,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 00:16:46,978 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:46,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:46,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1212971778, now seen corresponding path program 1 times [2023-12-19 00:16:46,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:46,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801170370] [2023-12-19 00:16:46,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:46,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:47,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:47,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801170370] [2023-12-19 00:16:47,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801170370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:47,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:47,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:16:47,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576085504] [2023-12-19 00:16:47,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:47,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:16:47,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:47,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:16:47,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:16:47,185 INFO L87 Difference]: Start difference. First operand 832 states and 1543 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:47,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:47,394 INFO L93 Difference]: Finished difference Result 1262 states and 2233 transitions. [2023-12-19 00:16:47,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 00:16:47,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-19 00:16:47,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:47,398 INFO L225 Difference]: With dead ends: 1262 [2023-12-19 00:16:47,398 INFO L226 Difference]: Without dead ends: 1219 [2023-12-19 00:16:47,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 00:16:47,402 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 7959 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7959 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:47,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7959 Valid, 2654 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:16:47,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2023-12-19 00:16:47,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 873. [2023-12-19 00:16:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8473019517795637) internal successors, (1609), 872 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:47,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1609 transitions. [2023-12-19 00:16:47,420 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1609 transitions. Word has length 51 [2023-12-19 00:16:47,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:47,425 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1609 transitions. [2023-12-19 00:16:47,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:47,425 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1609 transitions. [2023-12-19 00:16:47,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 00:16:47,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:47,429 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] [2023-12-19 00:16:47,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 00:16:47,430 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:47,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:47,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1583069298, now seen corresponding path program 1 times [2023-12-19 00:16:47,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:47,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014012844] [2023-12-19 00:16:47,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:47,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:47,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:47,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:47,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014012844] [2023-12-19 00:16:47,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014012844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:47,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:47,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:16:47,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853516495] [2023-12-19 00:16:47,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:47,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:16:47,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:47,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:16:47,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:16:47,500 INFO L87 Difference]: Start difference. First operand 873 states and 1609 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:47,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:47,527 INFO L93 Difference]: Finished difference Result 1030 states and 1860 transitions. [2023-12-19 00:16:47,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:16:47,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-19 00:16:47,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:47,530 INFO L225 Difference]: With dead ends: 1030 [2023-12-19 00:16:47,530 INFO L226 Difference]: Without dead ends: 946 [2023-12-19 00:16:47,531 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 [2023-12-19 00:16:47,531 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1482 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:47,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1597 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:16:47,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2023-12-19 00:16:47,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 942. [2023-12-19 00:16:47,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.8265957446808512) internal successors, (1717), 941 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1717 transitions. [2023-12-19 00:16:47,545 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1717 transitions. Word has length 53 [2023-12-19 00:16:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:47,545 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1717 transitions. [2023-12-19 00:16:47,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:47,545 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1717 transitions. [2023-12-19 00:16:47,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 00:16:47,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:47,546 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] [2023-12-19 00:16:47,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 00:16:47,546 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:47,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:47,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1585214250, now seen corresponding path program 1 times [2023-12-19 00:16:47,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:47,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630479683] [2023-12-19 00:16:47,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:47,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:47,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:47,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:47,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630479683] [2023-12-19 00:16:47,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630479683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:47,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:47,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:16:47,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787064064] [2023-12-19 00:16:47,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:47,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:16:47,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:47,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:16:47,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:16:47,700 INFO L87 Difference]: Start difference. First operand 942 states and 1717 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:47,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:47,827 INFO L93 Difference]: Finished difference Result 1097 states and 1961 transitions. [2023-12-19 00:16:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:16:47,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-19 00:16:47,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:47,830 INFO L225 Difference]: With dead ends: 1097 [2023-12-19 00:16:47,830 INFO L226 Difference]: Without dead ends: 944 [2023-12-19 00:16:47,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-19 00:16:47,831 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7454 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7454 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:47,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7454 Valid, 1790 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:16:47,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-12-19 00:16:47,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2023-12-19 00:16:47,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.824468085106383) internal successors, (1715), 941 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1715 transitions. [2023-12-19 00:16:47,845 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1715 transitions. Word has length 53 [2023-12-19 00:16:47,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:47,846 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1715 transitions. [2023-12-19 00:16:47,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:47,846 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1715 transitions. [2023-12-19 00:16:47,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-19 00:16:47,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:47,846 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] [2023-12-19 00:16:47,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 00:16:47,847 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:47,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:47,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1767897232, now seen corresponding path program 1 times [2023-12-19 00:16:47,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:47,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022774129] [2023-12-19 00:16:47,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:47,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:47,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:47,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:47,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022774129] [2023-12-19 00:16:47,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022774129] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:47,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:47,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:16:47,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570016933] [2023-12-19 00:16:47,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:47,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:16:47,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:47,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:16:47,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:16:47,990 INFO L87 Difference]: Start difference. First operand 942 states and 1715 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:48,019 INFO L93 Difference]: Finished difference Result 950 states and 1724 transitions. [2023-12-19 00:16:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:16:48,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-19 00:16:48,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:48,022 INFO L225 Difference]: With dead ends: 950 [2023-12-19 00:16:48,023 INFO L226 Difference]: Without dead ends: 948 [2023-12-19 00:16:48,023 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 [2023-12-19 00:16:48,023 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 1 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4609 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 [2023-12-19 00:16:48,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4609 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:16:48,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-12-19 00:16:48,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 946. [2023-12-19 00:16:48,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 944 states have (on average 1.819915254237288) internal successors, (1718), 945 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1718 transitions. [2023-12-19 00:16:48,040 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1718 transitions. Word has length 54 [2023-12-19 00:16:48,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:48,040 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1718 transitions. [2023-12-19 00:16:48,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,040 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1718 transitions. [2023-12-19 00:16:48,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:16:48,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:48,041 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] [2023-12-19 00:16:48,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 00:16:48,042 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:48,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:48,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1923112714, now seen corresponding path program 1 times [2023-12-19 00:16:48,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:48,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789361356] [2023-12-19 00:16:48,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:48,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:48,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:48,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789361356] [2023-12-19 00:16:48,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789361356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:48,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:48,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:16:48,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643651589] [2023-12-19 00:16:48,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:48,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:16:48,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:48,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:16:48,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:16:48,095 INFO L87 Difference]: Start difference. First operand 946 states and 1718 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:48,116 INFO L93 Difference]: Finished difference Result 1244 states and 2178 transitions. [2023-12-19 00:16:48,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:16:48,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-19 00:16:48,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:48,120 INFO L225 Difference]: With dead ends: 1244 [2023-12-19 00:16:48,120 INFO L226 Difference]: Without dead ends: 1087 [2023-12-19 00:16:48,121 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 [2023-12-19 00:16:48,123 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1495 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1658 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 [2023-12-19 00:16:48,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1658 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:16:48,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2023-12-19 00:16:48,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1085. [2023-12-19 00:16:48,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1083 states have (on average 1.7811634349030472) internal successors, (1929), 1084 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1929 transitions. [2023-12-19 00:16:48,138 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1929 transitions. Word has length 55 [2023-12-19 00:16:48,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:48,139 INFO L495 AbstractCegarLoop]: Abstraction has 1085 states and 1929 transitions. [2023-12-19 00:16:48,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1929 transitions. [2023-12-19 00:16:48,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:16:48,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:48,139 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] [2023-12-19 00:16:48,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 00:16:48,140 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:48,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:48,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1963056650, now seen corresponding path program 1 times [2023-12-19 00:16:48,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:48,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595818128] [2023-12-19 00:16:48,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:48,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:48,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:48,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:48,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595818128] [2023-12-19 00:16:48,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595818128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:48,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:48,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:16:48,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566484475] [2023-12-19 00:16:48,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:48,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:16:48,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:48,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:16:48,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:16:48,180 INFO L87 Difference]: Start difference. First operand 1085 states and 1929 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:48,204 INFO L93 Difference]: Finished difference Result 1645 states and 2783 transitions. [2023-12-19 00:16:48,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:16:48,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-19 00:16:48,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:48,209 INFO L225 Difference]: With dead ends: 1645 [2023-12-19 00:16:48,209 INFO L226 Difference]: Without dead ends: 1349 [2023-12-19 00:16:48,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:16:48,211 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1493 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1660 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 [2023-12-19 00:16:48,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1660 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:16:48,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2023-12-19 00:16:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1347. [2023-12-19 00:16:48,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1345 states have (on average 1.7241635687732342) internal successors, (2319), 1346 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2319 transitions. [2023-12-19 00:16:48,231 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2319 transitions. Word has length 55 [2023-12-19 00:16:48,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:48,231 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 2319 transitions. [2023-12-19 00:16:48,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2319 transitions. [2023-12-19 00:16:48,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:16:48,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:48,232 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] [2023-12-19 00:16:48,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 00:16:48,232 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:48,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:48,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1337400586, now seen corresponding path program 1 times [2023-12-19 00:16:48,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:48,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223993695] [2023-12-19 00:16:48,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:48,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:48,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:48,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223993695] [2023-12-19 00:16:48,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223993695] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:48,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:48,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:16:48,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848768705] [2023-12-19 00:16:48,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:48,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:16:48,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:48,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:16:48,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:16:48,272 INFO L87 Difference]: Start difference. First operand 1347 states and 2319 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:48,300 INFO L93 Difference]: Finished difference Result 2399 states and 3897 transitions. [2023-12-19 00:16:48,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:16:48,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-19 00:16:48,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:48,309 INFO L225 Difference]: With dead ends: 2399 [2023-12-19 00:16:48,309 INFO L226 Difference]: Without dead ends: 1841 [2023-12-19 00:16:48,310 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 [2023-12-19 00:16:48,311 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 1491 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1662 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 [2023-12-19 00:16:48,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1662 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:16:48,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2023-12-19 00:16:48,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1839. [2023-12-19 00:16:48,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1837 states have (on average 1.6521502449646162) internal successors, (3035), 1838 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 3035 transitions. [2023-12-19 00:16:48,343 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 3035 transitions. Word has length 55 [2023-12-19 00:16:48,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:48,343 INFO L495 AbstractCegarLoop]: Abstraction has 1839 states and 3035 transitions. [2023-12-19 00:16:48,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 3035 transitions. [2023-12-19 00:16:48,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:16:48,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:48,344 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] [2023-12-19 00:16:48,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 00:16:48,344 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:48,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:48,347 INFO L85 PathProgramCache]: Analyzing trace with hash -2068833270, now seen corresponding path program 1 times [2023-12-19 00:16:48,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:48,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97523740] [2023-12-19 00:16:48,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:48,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:48,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:48,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:48,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97523740] [2023-12-19 00:16:48,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97523740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:48,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:48,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:16:48,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371719651] [2023-12-19 00:16:48,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:48,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:16:48,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:48,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:16:48,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:16:48,388 INFO L87 Difference]: Start difference. First operand 1839 states and 3035 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:48,428 INFO L93 Difference]: Finished difference Result 3811 states and 5933 transitions. [2023-12-19 00:16:48,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:16:48,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-19 00:16:48,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:48,436 INFO L225 Difference]: With dead ends: 3811 [2023-12-19 00:16:48,436 INFO L226 Difference]: Without dead ends: 2761 [2023-12-19 00:16:48,438 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 [2023-12-19 00:16:48,438 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1489 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1664 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 [2023-12-19 00:16:48,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1664 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:16:48,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2023-12-19 00:16:48,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2759. [2023-12-19 00:16:48,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2759 states, 2757 states have (on average 1.5738121146173376) internal successors, (4339), 2758 states have internal predecessors, (4339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 4339 transitions. [2023-12-19 00:16:48,493 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 4339 transitions. Word has length 55 [2023-12-19 00:16:48,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:48,493 INFO L495 AbstractCegarLoop]: Abstraction has 2759 states and 4339 transitions. [2023-12-19 00:16:48,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 4339 transitions. [2023-12-19 00:16:48,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 00:16:48,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:48,494 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] [2023-12-19 00:16:48,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 00:16:48,494 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:48,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:48,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1474848977, now seen corresponding path program 1 times [2023-12-19 00:16:48,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:48,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052594104] [2023-12-19 00:16:48,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:48,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:48,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:48,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052594104] [2023-12-19 00:16:48,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052594104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:48,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:48,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:16:48,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082719314] [2023-12-19 00:16:48,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:48,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:16:48,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:48,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:16:48,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:16:48,537 INFO L87 Difference]: Start difference. First operand 2759 states and 4339 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:48,584 INFO L93 Difference]: Finished difference Result 4814 states and 7385 transitions. [2023-12-19 00:16:48,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:16:48,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-12-19 00:16:48,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:48,594 INFO L225 Difference]: With dead ends: 4814 [2023-12-19 00:16:48,594 INFO L226 Difference]: Without dead ends: 3691 [2023-12-19 00:16:48,596 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 [2023-12-19 00:16:48,596 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 1494 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1659 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 [2023-12-19 00:16:48,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:16:48,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2023-12-19 00:16:48,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3689. [2023-12-19 00:16:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3689 states, 3687 states have (on average 1.537564415513968) internal successors, (5669), 3688 states have internal predecessors, (5669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5669 transitions. [2023-12-19 00:16:48,669 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5669 transitions. Word has length 57 [2023-12-19 00:16:48,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:48,669 INFO L495 AbstractCegarLoop]: Abstraction has 3689 states and 5669 transitions. [2023-12-19 00:16:48,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5669 transitions. [2023-12-19 00:16:48,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 00:16:48,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:48,670 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] [2023-12-19 00:16:48,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 00:16:48,670 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:48,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:48,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1139867461, now seen corresponding path program 1 times [2023-12-19 00:16:48,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:48,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945038654] [2023-12-19 00:16:48,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:48,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:48,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:48,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945038654] [2023-12-19 00:16:48,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945038654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:48,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:48,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:16:48,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224697552] [2023-12-19 00:16:48,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:48,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:16:48,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:48,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:16:48,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:16:48,803 INFO L87 Difference]: Start difference. First operand 3689 states and 5669 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:54,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:54,252 INFO L93 Difference]: Finished difference Result 5944 states and 9978 transitions. [2023-12-19 00:16:54,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:16:54,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-12-19 00:16:54,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:54,265 INFO L225 Difference]: With dead ends: 5944 [2023-12-19 00:16:54,265 INFO L226 Difference]: Without dead ends: 5191 [2023-12-19 00:16:54,267 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 [2023-12-19 00:16:54,267 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 2390 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5521 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 6621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:54,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2390 Valid, 812 Invalid, 6621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5521 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-19 00:16:54,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5191 states. [2023-12-19 00:16:54,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5191 to 5191. [2023-12-19 00:16:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5189 states have (on average 1.5022162266332626) internal successors, (7795), 5190 states have internal predecessors, (7795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 7795 transitions. [2023-12-19 00:16:54,390 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 7795 transitions. Word has length 59 [2023-12-19 00:16:54,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:54,391 INFO L495 AbstractCegarLoop]: Abstraction has 5191 states and 7795 transitions. [2023-12-19 00:16:54,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:54,391 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 7795 transitions. [2023-12-19 00:16:54,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:16:54,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:54,395 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] [2023-12-19 00:16:54,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 00:16:54,396 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:54,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:54,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1067448203, now seen corresponding path program 1 times [2023-12-19 00:16:54,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:54,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474405223] [2023-12-19 00:16:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:54,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:54,510 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 00:16:54,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:54,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474405223] [2023-12-19 00:16:54,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474405223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:54,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:54,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:16:54,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751990190] [2023-12-19 00:16:54,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:54,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:16:54,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:54,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:16:54,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:16:54,512 INFO L87 Difference]: Start difference. First operand 5191 states and 7795 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:54,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:54,894 INFO L93 Difference]: Finished difference Result 20291 states and 29609 transitions. [2023-12-19 00:16:54,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:16:54,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 73 [2023-12-19 00:16:54,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:54,944 INFO L225 Difference]: With dead ends: 20291 [2023-12-19 00:16:54,944 INFO L226 Difference]: Without dead ends: 17393 [2023-12-19 00:16:54,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:16:54,956 INFO L413 NwaCegarLoop]: 1605 mSDtfsCounter, 6314 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6314 SdHoareTripleChecker+Valid, 3633 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:54,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6314 Valid, 3633 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:16:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17393 states. [2023-12-19 00:16:55,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17393 to 8087. [2023-12-19 00:16:55,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8087 states, 8085 states have (on average 1.4766852195423623) internal successors, (11939), 8086 states have internal predecessors, (11939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:55,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8087 states to 8087 states and 11939 transitions. [2023-12-19 00:16:55,251 INFO L78 Accepts]: Start accepts. Automaton has 8087 states and 11939 transitions. Word has length 73 [2023-12-19 00:16:55,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:55,252 INFO L495 AbstractCegarLoop]: Abstraction has 8087 states and 11939 transitions. [2023-12-19 00:16:55,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:55,252 INFO L276 IsEmpty]: Start isEmpty. Operand 8087 states and 11939 transitions. [2023-12-19 00:16:55,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:16:55,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:55,253 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] [2023-12-19 00:16:55,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 00:16:55,254 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:55,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:55,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1107392139, now seen corresponding path program 1 times [2023-12-19 00:16:55,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:55,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553713539] [2023-12-19 00:16:55,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:55,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 00:16:55,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:55,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553713539] [2023-12-19 00:16:55,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553713539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:55,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:55,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:16:55,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082947818] [2023-12-19 00:16:55,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:55,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:16:55,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:55,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:16:55,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:16:55,358 INFO L87 Difference]: Start difference. First operand 8087 states and 11939 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:55,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:55,694 INFO L93 Difference]: Finished difference Result 23187 states and 33753 transitions. [2023-12-19 00:16:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:16:55,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 73 [2023-12-19 00:16:55,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:55,725 INFO L225 Difference]: With dead ends: 23187 [2023-12-19 00:16:55,725 INFO L226 Difference]: Without dead ends: 20289 [2023-12-19 00:16:55,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:16:55,735 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6338 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:55,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6338 Valid, 3557 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:16:55,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20289 states. [2023-12-19 00:16:56,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20289 to 12439. [2023-12-19 00:16:56,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12439 states, 12437 states have (on average 1.4565409664710138) internal successors, (18115), 12438 states have internal predecessors, (18115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12439 states to 12439 states and 18115 transitions. [2023-12-19 00:16:56,150 INFO L78 Accepts]: Start accepts. Automaton has 12439 states and 18115 transitions. Word has length 73 [2023-12-19 00:16:56,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:56,150 INFO L495 AbstractCegarLoop]: Abstraction has 12439 states and 18115 transitions. [2023-12-19 00:16:56,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:56,151 INFO L276 IsEmpty]: Start isEmpty. Operand 12439 states and 18115 transitions. [2023-12-19 00:16:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:16:56,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:56,152 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] [2023-12-19 00:16:56,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 00:16:56,152 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:56,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:56,153 INFO L85 PathProgramCache]: Analyzing trace with hash 481736075, now seen corresponding path program 1 times [2023-12-19 00:16:56,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:56,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390641935] [2023-12-19 00:16:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:56,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 00:16:56,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:56,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390641935] [2023-12-19 00:16:56,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390641935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:56,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:56,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:16:56,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257702532] [2023-12-19 00:16:56,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:56,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:16:56,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:56,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:16:56,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:16:56,246 INFO L87 Difference]: Start difference. First operand 12439 states and 18115 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:56,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:56,634 INFO L93 Difference]: Finished difference Result 26083 states and 37897 transitions. [2023-12-19 00:16:56,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:16:56,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-19 00:16:56,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:56,669 INFO L225 Difference]: With dead ends: 26083 [2023-12-19 00:16:56,669 INFO L226 Difference]: Without dead ends: 23185 [2023-12-19 00:16:56,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:16:56,682 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 6382 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6382 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:56,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6382 Valid, 3520 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:16:56,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23185 states. [2023-12-19 00:16:57,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23185 to 15335. [2023-12-19 00:16:57,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15335 states, 15333 states have (on average 1.451705471858084) internal successors, (22259), 15334 states have internal predecessors, (22259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:57,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15335 states to 15335 states and 22259 transitions. [2023-12-19 00:16:57,148 INFO L78 Accepts]: Start accepts. Automaton has 15335 states and 22259 transitions. Word has length 73 [2023-12-19 00:16:57,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:57,148 INFO L495 AbstractCegarLoop]: Abstraction has 15335 states and 22259 transitions. [2023-12-19 00:16:57,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:57,149 INFO L276 IsEmpty]: Start isEmpty. Operand 15335 states and 22259 transitions. [2023-12-19 00:16:57,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:16:57,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:57,150 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] [2023-12-19 00:16:57,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 00:16:57,150 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:57,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:57,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1370469515, now seen corresponding path program 1 times [2023-12-19 00:16:57,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:57,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343581208] [2023-12-19 00:16:57,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:57,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:57,250 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 00:16:57,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:57,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343581208] [2023-12-19 00:16:57,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343581208] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:57,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:57,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:16:57,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476377197] [2023-12-19 00:16:57,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:57,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:16:57,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:57,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:16:57,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:16:57,253 INFO L87 Difference]: Start difference. First operand 15335 states and 22259 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:57,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:57,711 INFO L93 Difference]: Finished difference Result 28979 states and 42041 transitions. [2023-12-19 00:16:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:16:57,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-19 00:16:57,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:57,754 INFO L225 Difference]: With dead ends: 28979 [2023-12-19 00:16:57,755 INFO L226 Difference]: Without dead ends: 26081 [2023-12-19 00:16:57,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:16:57,765 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 6329 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6329 SdHoareTripleChecker+Valid, 3586 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:57,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6329 Valid, 3586 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:16:57,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26081 states. [2023-12-19 00:16:58,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26081 to 18231. [2023-12-19 00:16:58,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18231 states, 18229 states have (on average 1.4484063854298097) internal successors, (26403), 18230 states have internal predecessors, (26403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:58,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18231 states to 18231 states and 26403 transitions. [2023-12-19 00:16:58,316 INFO L78 Accepts]: Start accepts. Automaton has 18231 states and 26403 transitions. Word has length 73 [2023-12-19 00:16:58,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:58,316 INFO L495 AbstractCegarLoop]: Abstraction has 18231 states and 26403 transitions. [2023-12-19 00:16:58,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:58,317 INFO L276 IsEmpty]: Start isEmpty. Operand 18231 states and 26403 transitions. [2023-12-19 00:16:58,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-19 00:16:58,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:58,319 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] [2023-12-19 00:16:58,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 00:16:58,319 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:58,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:58,320 INFO L85 PathProgramCache]: Analyzing trace with hash -823987853, now seen corresponding path program 1 times [2023-12-19 00:16:58,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:58,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724823918] [2023-12-19 00:16:58,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:58,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:58,404 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:58,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:58,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724823918] [2023-12-19 00:16:58,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724823918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:58,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:58,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:16:58,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464073177] [2023-12-19 00:16:58,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:58,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:16:58,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:58,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:16:58,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:16:58,406 INFO L87 Difference]: Start difference. First operand 18231 states and 26403 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:58,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:58,653 INFO L93 Difference]: Finished difference Result 29518 states and 42793 transitions. [2023-12-19 00:16:58,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:16:58,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-19 00:16:58,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:58,671 INFO L225 Difference]: With dead ends: 29518 [2023-12-19 00:16:58,671 INFO L226 Difference]: Without dead ends: 13580 [2023-12-19 00:16:58,687 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 [2023-12-19 00:16:58,687 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 50 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3106 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 [2023-12-19 00:16:58,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3106 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:16:58,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13580 states. [2023-12-19 00:16:58,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13580 to 13578. [2023-12-19 00:16:58,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13578 states, 13576 states have (on average 1.4594873305833824) internal successors, (19814), 13577 states have internal predecessors, (19814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:58,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13578 states to 13578 states and 19814 transitions. [2023-12-19 00:16:58,972 INFO L78 Accepts]: Start accepts. Automaton has 13578 states and 19814 transitions. Word has length 75 [2023-12-19 00:16:58,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:58,972 INFO L495 AbstractCegarLoop]: Abstraction has 13578 states and 19814 transitions. [2023-12-19 00:16:58,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:58,972 INFO L276 IsEmpty]: Start isEmpty. Operand 13578 states and 19814 transitions. [2023-12-19 00:16:58,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-19 00:16:58,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:58,973 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] [2023-12-19 00:16:58,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 00:16:58,973 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:58,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:58,974 INFO L85 PathProgramCache]: Analyzing trace with hash 865276784, now seen corresponding path program 1 times [2023-12-19 00:16:58,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:58,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913980886] [2023-12-19 00:16:58,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:58,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:59,085 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:16:59,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:59,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913980886] [2023-12-19 00:16:59,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913980886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:59,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:59,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:16:59,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264627407] [2023-12-19 00:16:59,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:59,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:16:59,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:59,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:16:59,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:16:59,086 INFO L87 Difference]: Start difference. First operand 13578 states and 19814 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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) [2023-12-19 00:16:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:59,499 INFO L93 Difference]: Finished difference Result 23830 states and 34700 transitions. [2023-12-19 00:16:59,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:16:59,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 75 [2023-12-19 00:16:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:59,520 INFO L225 Difference]: With dead ends: 23830 [2023-12-19 00:16:59,520 INFO L226 Difference]: Without dead ends: 21780 [2023-12-19 00:16:59,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:16:59,526 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 6321 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6321 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:59,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6321 Valid, 3692 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:16:59,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21780 states. [2023-12-19 00:16:59,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21780 to 15626. [2023-12-19 00:16:59,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15626 states, 15624 states have (on average 1.456605222734255) internal successors, (22758), 15625 states have internal predecessors, (22758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:59,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15626 states to 15626 states and 22758 transitions. [2023-12-19 00:16:59,860 INFO L78 Accepts]: Start accepts. Automaton has 15626 states and 22758 transitions. Word has length 75 [2023-12-19 00:16:59,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:59,861 INFO L495 AbstractCegarLoop]: Abstraction has 15626 states and 22758 transitions. [2023-12-19 00:16:59,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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) [2023-12-19 00:16:59,861 INFO L276 IsEmpty]: Start isEmpty. Operand 15626 states and 22758 transitions. [2023-12-19 00:16:59,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 00:16:59,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:59,863 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] [2023-12-19 00:16:59,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 00:16:59,863 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:59,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:59,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2077236487, now seen corresponding path program 1 times [2023-12-19 00:16:59,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:59,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012057034] [2023-12-19 00:16:59,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:59,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:59,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:59,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012057034] [2023-12-19 00:16:59,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012057034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:59,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:59,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:16:59,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531968447] [2023-12-19 00:16:59,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:59,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:16:59,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:59,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:16:59,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:16:59,952 INFO L87 Difference]: Start difference. First operand 15626 states and 22758 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) [2023-12-19 00:17:00,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:17:00,108 INFO L93 Difference]: Finished difference Result 22286 states and 32328 transitions. [2023-12-19 00:17:00,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:17:00,109 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 [2023-12-19 00:17:00,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:17:00,118 INFO L225 Difference]: With dead ends: 22286 [2023-12-19 00:17:00,118 INFO L226 Difference]: Without dead ends: 8972 [2023-12-19 00:17:00,129 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 [2023-12-19 00:17:00,130 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 45 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3091 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 [2023-12-19 00:17:00,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3091 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:17:00,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8972 states. [2023-12-19 00:17:00,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8972 to 8970. [2023-12-19 00:17:00,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8970 states, 8968 states have (on average 1.4591882247992864) internal successors, (13086), 8969 states have internal predecessors, (13086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8970 states to 8970 states and 13086 transitions. [2023-12-19 00:17:00,307 INFO L78 Accepts]: Start accepts. Automaton has 8970 states and 13086 transitions. Word has length 76 [2023-12-19 00:17:00,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:17:00,307 INFO L495 AbstractCegarLoop]: Abstraction has 8970 states and 13086 transitions. [2023-12-19 00:17:00,307 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) [2023-12-19 00:17:00,307 INFO L276 IsEmpty]: Start isEmpty. Operand 8970 states and 13086 transitions. [2023-12-19 00:17:00,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 00:17:00,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:17:00,308 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] [2023-12-19 00:17:00,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 00:17:00,308 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:17:00,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:17:00,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1152666791, now seen corresponding path program 1 times [2023-12-19 00:17:00,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:17:00,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519767859] [2023-12-19 00:17:00,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:00,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:17:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:00,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:17:00,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519767859] [2023-12-19 00:17:00,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519767859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:17:00,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:17:00,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:17:00,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708143893] [2023-12-19 00:17:00,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:17:00,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:17:00,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:17:00,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:17:00,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:17:00,373 INFO L87 Difference]: Start difference. First operand 8970 states and 13086 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) [2023-12-19 00:17:00,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:17:00,460 INFO L93 Difference]: Finished difference Result 12302 states and 17820 transitions. [2023-12-19 00:17:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:17:00,460 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 [2023-12-19 00:17:00,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:17:00,466 INFO L225 Difference]: With dead ends: 12302 [2023-12-19 00:17:00,466 INFO L226 Difference]: Without dead ends: 5644 [2023-12-19 00:17:00,471 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 [2023-12-19 00:17:00,472 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 42 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3076 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 [2023-12-19 00:17:00,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3076 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:17:00,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2023-12-19 00:17:00,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 5642. [2023-12-19 00:17:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5642 states, 5640 states have (on average 1.471985815602837) internal successors, (8302), 5641 states have internal predecessors, (8302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:00,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 8302 transitions. [2023-12-19 00:17:00,613 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 8302 transitions. Word has length 78 [2023-12-19 00:17:00,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:17:00,614 INFO L495 AbstractCegarLoop]: Abstraction has 5642 states and 8302 transitions. [2023-12-19 00:17:00,614 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) [2023-12-19 00:17:00,614 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 8302 transitions. [2023-12-19 00:17:00,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 00:17:00,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:17:00,615 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] [2023-12-19 00:17:00,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 00:17:00,616 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:17:00,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:17:00,616 INFO L85 PathProgramCache]: Analyzing trace with hash 592619477, now seen corresponding path program 1 times [2023-12-19 00:17:00,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:17:00,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75118820] [2023-12-19 00:17:00,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:00,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:17:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:00,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:17:00,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75118820] [2023-12-19 00:17:00,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75118820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:17:00,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:17:00,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:17:00,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232322703] [2023-12-19 00:17:00,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:17:00,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:17:00,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:17:00,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:17:00,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:17:00,672 INFO L87 Difference]: Start difference. First operand 5642 states and 8302 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:00,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:17:00,718 INFO L93 Difference]: Finished difference Result 7310 states and 10644 transitions. [2023-12-19 00:17:00,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:17:00,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-19 00:17:00,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:17:00,722 INFO L225 Difference]: With dead ends: 7310 [2023-12-19 00:17:00,722 INFO L226 Difference]: Without dead ends: 3980 [2023-12-19 00:17:00,724 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 [2023-12-19 00:17:00,725 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 39 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3061 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 [2023-12-19 00:17:00,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3061 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:17:00,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2023-12-19 00:17:00,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 3978. [2023-12-19 00:17:00,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3978 states, 3976 states have (on average 1.4929577464788732) internal successors, (5936), 3977 states have internal predecessors, (5936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:00,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 5936 transitions. [2023-12-19 00:17:00,782 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 5936 transitions. Word has length 80 [2023-12-19 00:17:00,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:17:00,782 INFO L495 AbstractCegarLoop]: Abstraction has 3978 states and 5936 transitions. [2023-12-19 00:17:00,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:00,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 5936 transitions. [2023-12-19 00:17:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 00:17:00,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:17:00,783 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] [2023-12-19 00:17:00,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 00:17:00,783 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:17:00,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:17:00,784 INFO L85 PathProgramCache]: Analyzing trace with hash -495332221, now seen corresponding path program 1 times [2023-12-19 00:17:00,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:17:00,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955012911] [2023-12-19 00:17:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:00,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:17:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:00,837 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:00,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:17:00,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955012911] [2023-12-19 00:17:00,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955012911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:17:00,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:17:00,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:17:00,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613591861] [2023-12-19 00:17:00,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:17:00,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:17:00,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:17:00,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:17:00,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:17:00,838 INFO L87 Difference]: Start difference. First operand 3978 states and 5936 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:00,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:17:00,872 INFO L93 Difference]: Finished difference Result 4814 states and 7095 transitions. [2023-12-19 00:17:00,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:17:00,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2023-12-19 00:17:00,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:17:00,875 INFO L225 Difference]: With dead ends: 4814 [2023-12-19 00:17:00,875 INFO L226 Difference]: Without dead ends: 3148 [2023-12-19 00:17:00,878 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 [2023-12-19 00:17:00,878 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 36 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3046 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 [2023-12-19 00:17:00,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3046 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:17:00,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3148 states. [2023-12-19 00:17:00,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3148 to 3146. [2023-12-19 00:17:00,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3146 states, 3144 states have (on average 1.5159033078880406) internal successors, (4766), 3145 states have internal predecessors, (4766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:00,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4766 transitions. [2023-12-19 00:17:00,920 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4766 transitions. Word has length 82 [2023-12-19 00:17:00,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:17:00,920 INFO L495 AbstractCegarLoop]: Abstraction has 3146 states and 4766 transitions. [2023-12-19 00:17:00,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:00,920 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4766 transitions. [2023-12-19 00:17:00,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-19 00:17:00,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:17:00,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:17:00,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 00:17:00,921 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:17:00,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:17:00,922 INFO L85 PathProgramCache]: Analyzing trace with hash -323964239, now seen corresponding path program 1 times [2023-12-19 00:17:00,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:17:00,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817740628] [2023-12-19 00:17:00,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:00,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:17:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:01,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:17:01,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817740628] [2023-12-19 00:17:01,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817740628] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:17:01,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122355090] [2023-12-19 00:17:01,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:01,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:17:01,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:17:01,532 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) [2023-12-19 00:17:01,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 00:17:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:01,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 00:17:01,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:17:01,800 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:17:01,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:17:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:17:01,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122355090] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:17:01,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:17:01,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-19 00:17:01,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021012359] [2023-12-19 00:17:01,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:17:01,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 00:17:01,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:17:01,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 00:17:01,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-19 00:17:01,937 INFO L87 Difference]: Start difference. First operand 3146 states and 4766 transitions. Second operand has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:03,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:17:03,703 INFO L93 Difference]: Finished difference Result 9609 states and 13438 transitions. [2023-12-19 00:17:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 00:17:03,704 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2023-12-19 00:17:03,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:17:03,712 INFO L225 Difference]: With dead ends: 9609 [2023-12-19 00:17:03,712 INFO L226 Difference]: Without dead ends: 8775 [2023-12-19 00:17:03,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=747, Invalid=3285, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 00:17:03,717 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 11949 mSDsluCounter, 6370 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11949 SdHoareTripleChecker+Valid, 7884 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:17:03,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11949 Valid, 7884 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:17:03,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8775 states. [2023-12-19 00:17:03,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8775 to 8479. [2023-12-19 00:17:03,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8479 states, 8477 states have (on average 1.371357791671582) internal successors, (11625), 8478 states have internal predecessors, (11625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:03,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8479 states to 8479 states and 11625 transitions. [2023-12-19 00:17:03,891 INFO L78 Accepts]: Start accepts. Automaton has 8479 states and 11625 transitions. Word has length 84 [2023-12-19 00:17:03,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:17:03,891 INFO L495 AbstractCegarLoop]: Abstraction has 8479 states and 11625 transitions. [2023-12-19 00:17:03,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:03,891 INFO L276 IsEmpty]: Start isEmpty. Operand 8479 states and 11625 transitions. [2023-12-19 00:17:03,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-19 00:17:03,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:17:03,892 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] [2023-12-19 00:17:03,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 00:17:04,097 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,SelfDestructingSolverStorable22 [2023-12-19 00:17:04,100 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:17:04,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:17:04,101 INFO L85 PathProgramCache]: Analyzing trace with hash -152858016, now seen corresponding path program 1 times [2023-12-19 00:17:04,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:17:04,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572333913] [2023-12-19 00:17:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:04,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:17:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:04,354 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:04,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:17:04,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572333913] [2023-12-19 00:17:04,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572333913] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:17:04,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846626824] [2023-12-19 00:17:04,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:04,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:17:04,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:17:04,356 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) [2023-12-19 00:17:04,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 00:17:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:04,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 00:17:04,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:17:04,728 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:04,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:17:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:05,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846626824] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:17:05,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:17:05,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-19 00:17:05,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983825445] [2023-12-19 00:17:05,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:17:05,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 00:17:05,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:17:05,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 00:17:05,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-12-19 00:17:05,334 INFO L87 Difference]: Start difference. First operand 8479 states and 11625 transitions. Second operand has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:07,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:17:07,115 INFO L93 Difference]: Finished difference Result 22957 states and 30262 transitions. [2023-12-19 00:17:07,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 00:17:07,116 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-19 00:17:07,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:17:07,134 INFO L225 Difference]: With dead ends: 22957 [2023-12-19 00:17:07,134 INFO L226 Difference]: Without dead ends: 16832 [2023-12-19 00:17:07,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=670, Invalid=2410, Unknown=0, NotChecked=0, Total=3080 [2023-12-19 00:17:07,141 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 25212 mSDsluCounter, 5093 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25212 SdHoareTripleChecker+Valid, 6628 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:17:07,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25212 Valid, 6628 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 00:17:07,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16832 states. [2023-12-19 00:17:07,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16832 to 16208. [2023-12-19 00:17:07,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16208 states, 16206 states have (on average 1.3220412193014932) internal successors, (21425), 16207 states have internal predecessors, (21425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:07,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16208 states to 16208 states and 21425 transitions. [2023-12-19 00:17:07,564 INFO L78 Accepts]: Start accepts. Automaton has 16208 states and 21425 transitions. Word has length 85 [2023-12-19 00:17:07,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:17:07,564 INFO L495 AbstractCegarLoop]: Abstraction has 16208 states and 21425 transitions. [2023-12-19 00:17:07,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:07,564 INFO L276 IsEmpty]: Start isEmpty. Operand 16208 states and 21425 transitions. [2023-12-19 00:17:07,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-19 00:17:07,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:17:07,565 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:17:07,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 00:17:07,769 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,SelfDestructingSolverStorable23 [2023-12-19 00:17:07,770 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:17:07,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:17:07,770 INFO L85 PathProgramCache]: Analyzing trace with hash -326486610, now seen corresponding path program 1 times [2023-12-19 00:17:07,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:17:07,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806674176] [2023-12-19 00:17:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:07,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:17:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:08,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:17:08,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806674176] [2023-12-19 00:17:08,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806674176] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:17:08,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404481776] [2023-12-19 00:17:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:08,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:17:08,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:17:08,072 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) [2023-12-19 00:17:08,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 00:17:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:08,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 00:17:08,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:17:08,944 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:08,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:17:09,731 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:09,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404481776] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:17:09,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:17:09,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-12-19 00:17:09,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339688976] [2023-12-19 00:17:09,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:17:09,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 00:17:09,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:17:09,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 00:17:09,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2023-12-19 00:17:09,733 INFO L87 Difference]: Start difference. First operand 16208 states and 21425 transitions. Second operand has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:13,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:17:13,023 INFO L93 Difference]: Finished difference Result 35194 states and 45629 transitions. [2023-12-19 00:17:13,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-19 00:17:13,023 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-19 00:17:13,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:17:13,045 INFO L225 Difference]: With dead ends: 35194 [2023-12-19 00:17:13,045 INFO L226 Difference]: Without dead ends: 22907 [2023-12-19 00:17:13,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1140, Invalid=4262, Unknown=0, NotChecked=0, Total=5402 [2023-12-19 00:17:13,058 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 14132 mSDsluCounter, 15466 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14132 SdHoareTripleChecker+Valid, 16985 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 00:17:13,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14132 Valid, 16985 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 00:17:13,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22907 states. [2023-12-19 00:17:13,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22907 to 22213. [2023-12-19 00:17:13,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22213 states, 22211 states have (on average 1.2978254018279232) internal successors, (28826), 22212 states have internal predecessors, (28826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:13,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22213 states to 22213 states and 28826 transitions. [2023-12-19 00:17:13,732 INFO L78 Accepts]: Start accepts. Automaton has 22213 states and 28826 transitions. Word has length 85 [2023-12-19 00:17:13,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:17:13,733 INFO L495 AbstractCegarLoop]: Abstraction has 22213 states and 28826 transitions. [2023-12-19 00:17:13,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:13,733 INFO L276 IsEmpty]: Start isEmpty. Operand 22213 states and 28826 transitions. [2023-12-19 00:17:13,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 00:17:13,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:17:13,734 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:17:13,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 00:17:13,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:17:13,937 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:17:13,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:17:13,937 INFO L85 PathProgramCache]: Analyzing trace with hash 8311151, now seen corresponding path program 1 times [2023-12-19 00:17:13,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:17:13,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029187651] [2023-12-19 00:17:13,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:13,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:17:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:14,160 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:14,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:17:14,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029187651] [2023-12-19 00:17:14,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029187651] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:17:14,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300542596] [2023-12-19 00:17:14,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:14,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:17:14,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:17:14,162 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) [2023-12-19 00:17:14,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 00:17:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:14,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 00:17:14,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:17:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:15,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:17:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:18,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300542596] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:17:18,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:17:18,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 19] total 43 [2023-12-19 00:17:18,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275429836] [2023-12-19 00:17:18,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:17:18,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-19 00:17:18,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:17:18,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-19 00:17:18,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1615, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 00:17:18,017 INFO L87 Difference]: Start difference. First operand 22213 states and 28826 transitions. Second operand has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:35,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:17:35,315 INFO L93 Difference]: Finished difference Result 79043 states and 101136 transitions. [2023-12-19 00:17:35,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-19 00:17:35,316 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-19 00:17:35,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:17:35,375 INFO L225 Difference]: With dead ends: 79043 [2023-12-19 00:17:35,375 INFO L226 Difference]: Without dead ends: 61048 [2023-12-19 00:17:35,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11640 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=5588, Invalid=28084, Unknown=0, NotChecked=0, Total=33672 [2023-12-19 00:17:35,394 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 23988 mSDsluCounter, 18235 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23988 SdHoareTripleChecker+Valid, 19787 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:17:35,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23988 Valid, 19787 Invalid, 2815 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [129 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 00:17:35,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61048 states. [2023-12-19 00:17:37,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61048 to 52974. [2023-12-19 00:17:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52974 states, 52972 states have (on average 1.2715019255455713) internal successors, (67354), 52973 states have internal predecessors, (67354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:37,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52974 states to 52974 states and 67354 transitions. [2023-12-19 00:17:37,322 INFO L78 Accepts]: Start accepts. Automaton has 52974 states and 67354 transitions. Word has length 86 [2023-12-19 00:17:37,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:17:37,322 INFO L495 AbstractCegarLoop]: Abstraction has 52974 states and 67354 transitions. [2023-12-19 00:17:37,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:37,322 INFO L276 IsEmpty]: Start isEmpty. Operand 52974 states and 67354 transitions. [2023-12-19 00:17:37,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 00:17:37,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:17:37,324 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:17:37,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 00:17:37,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 00:17:37,526 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:17:37,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:17:37,526 INFO L85 PathProgramCache]: Analyzing trace with hash -12119242, now seen corresponding path program 1 times [2023-12-19 00:17:37,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:17:37,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386942814] [2023-12-19 00:17:37,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:37,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:17:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:37,867 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:37,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:17:37,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386942814] [2023-12-19 00:17:37,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386942814] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:17:37,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100929043] [2023-12-19 00:17:37,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:37,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:17:37,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:17:37,868 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) [2023-12-19 00:17:37,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 00:17:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:37,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 00:17:37,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:17:38,673 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:38,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:17:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:39,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100929043] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:17:39,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:17:39,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2023-12-19 00:17:39,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086869423] [2023-12-19 00:17:39,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:17:39,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 00:17:39,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:17:39,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 00:17:39,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2023-12-19 00:17:39,349 INFO L87 Difference]: Start difference. First operand 52974 states and 67354 transitions. Second operand has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:47,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:17:47,886 INFO L93 Difference]: Finished difference Result 181364 states and 229065 transitions. [2023-12-19 00:17:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-19 00:17:47,887 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-19 00:17:47,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:17:48,029 INFO L225 Difference]: With dead ends: 181364 [2023-12-19 00:17:48,029 INFO L226 Difference]: Without dead ends: 134334 [2023-12-19 00:17:48,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4710 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2147, Invalid=12615, Unknown=0, NotChecked=0, Total=14762 [2023-12-19 00:17:48,053 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 23925 mSDsluCounter, 12492 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23925 SdHoareTripleChecker+Valid, 13997 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 00:17:48,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23925 Valid, 13997 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 00:17:48,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134334 states. [2023-12-19 00:17:50,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134334 to 48640. [2023-12-19 00:17:50,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48640 states, 48638 states have (on average 1.2589744644105432) internal successors, (61234), 48639 states have internal predecessors, (61234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:50,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48640 states to 48640 states and 61234 transitions. [2023-12-19 00:17:50,537 INFO L78 Accepts]: Start accepts. Automaton has 48640 states and 61234 transitions. Word has length 87 [2023-12-19 00:17:50,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:17:50,537 INFO L495 AbstractCegarLoop]: Abstraction has 48640 states and 61234 transitions. [2023-12-19 00:17:50,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:50,537 INFO L276 IsEmpty]: Start isEmpty. Operand 48640 states and 61234 transitions. [2023-12-19 00:17:50,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 00:17:50,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:17:50,539 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:17:50,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 00:17:50,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 00:17:50,739 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:17:50,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:17:50,740 INFO L85 PathProgramCache]: Analyzing trace with hash 678905639, now seen corresponding path program 1 times [2023-12-19 00:17:50,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:17:50,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220733655] [2023-12-19 00:17:50,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:50,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:17:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:52,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:17:52,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220733655] [2023-12-19 00:17:52,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220733655] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:17:52,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952753924] [2023-12-19 00:17:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:52,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:17:52,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:17:52,704 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:17:52,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 00:17:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:52,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 00:17:52,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:17:53,984 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:53,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:17:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:55,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952753924] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:17:55,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:17:55,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15, 16] total 59 [2023-12-19 00:17:55,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336001451] [2023-12-19 00:17:55,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:17:55,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-19 00:17:55,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:17:55,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-19 00:17:55,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=3200, Unknown=0, NotChecked=0, Total=3422 [2023-12-19 00:17:55,357 INFO L87 Difference]: Start difference. First operand 48640 states and 61234 transitions. Second operand has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:18:22,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:18:22,205 INFO L93 Difference]: Finished difference Result 104742 states and 130643 transitions. [2023-12-19 00:18:22,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-19 00:18:22,205 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-19 00:18:22,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:18:22,292 INFO L225 Difference]: With dead ends: 104742 [2023-12-19 00:18:22,293 INFO L226 Difference]: Without dead ends: 87747 [2023-12-19 00:18:22,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12678 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=6746, Invalid=32656, Unknown=0, NotChecked=0, Total=39402 [2023-12-19 00:18:22,309 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 24508 mSDsluCounter, 34469 mSDsCounter, 0 mSdLazyCounter, 5025 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24508 SdHoareTripleChecker+Valid, 35985 SdHoareTripleChecker+Invalid, 5216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 5025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:18:22,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24508 Valid, 35985 Invalid, 5216 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [191 Valid, 5025 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 00:18:22,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87747 states. [2023-12-19 00:18:24,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87747 to 43567. [2023-12-19 00:18:24,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43567 states, 43565 states have (on average 1.2592677608171698) internal successors, (54860), 43566 states have internal predecessors, (54860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:18:24,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43567 states to 43567 states and 54860 transitions. [2023-12-19 00:18:24,714 INFO L78 Accepts]: Start accepts. Automaton has 43567 states and 54860 transitions. Word has length 88 [2023-12-19 00:18:24,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:18:24,714 INFO L495 AbstractCegarLoop]: Abstraction has 43567 states and 54860 transitions. [2023-12-19 00:18:24,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:18:24,714 INFO L276 IsEmpty]: Start isEmpty. Operand 43567 states and 54860 transitions. [2023-12-19 00:18:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-19 00:18:24,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:18:24,715 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] [2023-12-19 00:18:24,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 00:18:24,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 00:18:24,918 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:18:24,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:18:24,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1440817043, now seen corresponding path program 1 times [2023-12-19 00:18:24,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:18:24,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496605712] [2023-12-19 00:18:24,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:18:24,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:18:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:18:26,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:18:26,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:18:26,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496605712] [2023-12-19 00:18:26,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496605712] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:18:26,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214633300] [2023-12-19 00:18:26,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:18:26,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:18:26,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:18:26,691 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:18:26,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 00:18:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:18:26,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-19 00:18:26,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:18:30,260 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:18:30,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:18:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:18:33,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214633300] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:18:33,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:18:33,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 23] total 69 [2023-12-19 00:18:33,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548104631] [2023-12-19 00:18:33,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:18:33,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-19 00:18:33,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:18:33,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-19 00:18:33,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=4209, Unknown=0, NotChecked=0, Total=4692 [2023-12-19 00:18:33,652 INFO L87 Difference]: Start difference. First operand 43567 states and 54860 transitions. Second operand has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:19:21,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:19:21,526 INFO L93 Difference]: Finished difference Result 101777 states and 126436 transitions. [2023-12-19 00:19:21,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2023-12-19 00:19:21,527 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-19 00:19:21,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:19:21,603 INFO L225 Difference]: With dead ends: 101777 [2023-12-19 00:19:21,603 INFO L226 Difference]: Without dead ends: 85953 [2023-12-19 00:19:21,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20166 ImplicationChecksByTransitivity, 41.7s TimeCoverageRelationStatistics Valid=9509, Invalid=46897, Unknown=0, NotChecked=0, Total=56406 [2023-12-19 00:19:21,616 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 26836 mSDsluCounter, 31827 mSDsCounter, 0 mSdLazyCounter, 6910 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26836 SdHoareTripleChecker+Valid, 33364 SdHoareTripleChecker+Invalid, 7114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 6910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:19:21,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26836 Valid, 33364 Invalid, 7114 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [204 Valid, 6910 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-19 00:19:21,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85953 states. [2023-12-19 00:19:25,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85953 to 51582. [2023-12-19 00:19:25,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51582 states, 51580 states have (on average 1.2586855370298566) internal successors, (64923), 51581 states have internal predecessors, (64923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:19:25,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51582 states to 51582 states and 64923 transitions. [2023-12-19 00:19:25,888 INFO L78 Accepts]: Start accepts. Automaton has 51582 states and 64923 transitions. Word has length 90 [2023-12-19 00:19:25,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:19:25,888 INFO L495 AbstractCegarLoop]: Abstraction has 51582 states and 64923 transitions. [2023-12-19 00:19:25,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:19:25,888 INFO L276 IsEmpty]: Start isEmpty. Operand 51582 states and 64923 transitions. [2023-12-19 00:19:25,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-19 00:19:25,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:19:25,894 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 00:19:25,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 00:19:26,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:19:26,103 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:19:26,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:19:26,103 INFO L85 PathProgramCache]: Analyzing trace with hash -354426684, now seen corresponding path program 1 times [2023-12-19 00:19:26,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:19:26,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157813509] [2023-12-19 00:19:26,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:19:26,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:19:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:19:26,261 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:19:26,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:19:26,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157813509] [2023-12-19 00:19:26,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157813509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:19:26,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:19:26,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:19:26,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896273563] [2023-12-19 00:19:26,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:19:26,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:19:26,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:19:26,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:19:26,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:19:26,263 INFO L87 Difference]: Start difference. First operand 51582 states and 64923 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:19:33,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:19:33,652 INFO L93 Difference]: Finished difference Result 54625 states and 70571 transitions. [2023-12-19 00:19:33,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:19:33,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-19 00:19:33,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:19:33,707 INFO L225 Difference]: With dead ends: 54625 [2023-12-19 00:19:33,707 INFO L226 Difference]: Without dead ends: 53084 [2023-12-19 00:19:33,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:19:33,712 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 792 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 3809 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 4473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 00:19:33,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 915 Invalid, 4473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3809 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 00:19:33,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53084 states. [2023-12-19 00:19:36,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53084 to 53084. [2023-12-19 00:19:36,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53084 states, 53082 states have (on average 1.2527975584944049) internal successors, (66501), 53083 states have internal predecessors, (66501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:19:36,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53084 states to 53084 states and 66501 transitions. [2023-12-19 00:19:36,797 INFO L78 Accepts]: Start accepts. Automaton has 53084 states and 66501 transitions. Word has length 130 [2023-12-19 00:19:36,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:19:36,797 INFO L495 AbstractCegarLoop]: Abstraction has 53084 states and 66501 transitions. [2023-12-19 00:19:36,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:19:36,798 INFO L276 IsEmpty]: Start isEmpty. Operand 53084 states and 66501 transitions. [2023-12-19 00:19:36,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 00:19:36,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:19:36,804 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 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] [2023-12-19 00:19:36,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 00:19:36,804 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:19:36,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:19:36,805 INFO L85 PathProgramCache]: Analyzing trace with hash -242955006, now seen corresponding path program 1 times [2023-12-19 00:19:36,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:19:36,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904424529] [2023-12-19 00:19:36,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:19:36,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:19:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:19:37,470 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 28 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:19:37,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:19:37,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904424529] [2023-12-19 00:19:37,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904424529] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:19:37,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671549573] [2023-12-19 00:19:37,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:19:37,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:19:37,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:19:37,473 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:19:37,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 00:19:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:19:37,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:19:37,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:19:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 46 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:19:38,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:19:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 44 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:19:40,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671549573] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:19:40,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:19:40,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-12-19 00:19:40,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320717180] [2023-12-19 00:19:40,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:19:40,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 00:19:40,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:19:40,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 00:19:40,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2023-12-19 00:19:40,019 INFO L87 Difference]: Start difference. First operand 53084 states and 66501 transitions. Second operand has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:19:49,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:19:49,962 INFO L93 Difference]: Finished difference Result 163247 states and 204277 transitions. [2023-12-19 00:19:49,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-19 00:19:49,962 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 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 138 [2023-12-19 00:19:49,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:19:50,096 INFO L225 Difference]: With dead ends: 163247 [2023-12-19 00:19:50,097 INFO L226 Difference]: Without dead ends: 117430 [2023-12-19 00:19:50,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2287 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1823, Invalid=8077, Unknown=0, NotChecked=0, Total=9900 [2023-12-19 00:19:50,116 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 21204 mSDsluCounter, 12479 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21204 SdHoareTripleChecker+Valid, 13964 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:19:50,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21204 Valid, 13964 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 00:19:50,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117430 states. [2023-12-19 00:19:55,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117430 to 91616. [2023-12-19 00:19:55,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91616 states, 91614 states have (on average 1.2277162879035954) internal successors, (112476), 91615 states have internal predecessors, (112476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:19:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91616 states to 91616 states and 112476 transitions. [2023-12-19 00:19:55,989 INFO L78 Accepts]: Start accepts. Automaton has 91616 states and 112476 transitions. Word has length 138 [2023-12-19 00:19:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:19:55,989 INFO L495 AbstractCegarLoop]: Abstraction has 91616 states and 112476 transitions. [2023-12-19 00:19:55,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:19:55,989 INFO L276 IsEmpty]: Start isEmpty. Operand 91616 states and 112476 transitions. [2023-12-19 00:19:55,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 00:19:55,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:19:55,998 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2023-12-19 00:19:56,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 00:19:56,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-19 00:19:56,199 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:19:56,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:19:56,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1614121552, now seen corresponding path program 1 times [2023-12-19 00:19:56,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:19:56,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515633298] [2023-12-19 00:19:56,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:19:56,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:19:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:19:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:19:56,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:19:56,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515633298] [2023-12-19 00:19:56,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515633298] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:19:56,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168184247] [2023-12-19 00:19:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:19:56,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:19:56,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:19:56,664 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:19:56,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 00:19:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:19:56,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:19:56,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:19:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 32 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:19:57,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:19:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:19:58,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168184247] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:19:58,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:19:58,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-12-19 00:19:58,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045082459] [2023-12-19 00:19:58,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:19:58,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 00:19:58,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:19:58,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 00:19:58,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=828, Unknown=0, NotChecked=0, Total=930 [2023-12-19 00:19:58,937 INFO L87 Difference]: Start difference. First operand 91616 states and 112476 transitions. Second operand has 31 states, 31 states have (on average 12.419354838709678) internal successors, (385), 30 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:20:09,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:20:09,948 INFO L93 Difference]: Finished difference Result 157525 states and 194607 transitions. [2023-12-19 00:20:09,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-19 00:20:09,949 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 12.419354838709678) internal successors, (385), 30 states have internal predecessors, (385), 0 states have call successors, (0), 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 138 [2023-12-19 00:20:09,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:20:10,080 INFO L225 Difference]: With dead ends: 157525 [2023-12-19 00:20:10,080 INFO L226 Difference]: Without dead ends: 104550 [2023-12-19 00:20:10,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1569, Invalid=6803, Unknown=0, NotChecked=0, Total=8372 [2023-12-19 00:20:10,114 INFO L413 NwaCegarLoop]: 1476 mSDtfsCounter, 22774 mSDsluCounter, 13685 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22774 SdHoareTripleChecker+Valid, 15161 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 00:20:10,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22774 Valid, 15161 Invalid, 1504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 00:20:10,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104550 states. [2023-12-19 00:20:14,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104550 to 44385. [2023-12-19 00:20:14,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44385 states, 44383 states have (on average 1.228060293355564) internal successors, (54505), 44384 states have internal predecessors, (54505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:20:14,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44385 states to 44385 states and 54505 transitions. [2023-12-19 00:20:14,175 INFO L78 Accepts]: Start accepts. Automaton has 44385 states and 54505 transitions. Word has length 138 [2023-12-19 00:20:14,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:20:14,175 INFO L495 AbstractCegarLoop]: Abstraction has 44385 states and 54505 transitions. [2023-12-19 00:20:14,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 12.419354838709678) internal successors, (385), 30 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:20:14,175 INFO L276 IsEmpty]: Start isEmpty. Operand 44385 states and 54505 transitions. [2023-12-19 00:20:14,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 00:20:14,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:20:14,180 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 00:20:14,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 00:20:14,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:20:14,381 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:20:14,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:20:14,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2060066176, now seen corresponding path program 1 times [2023-12-19 00:20:14,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:20:14,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770260159] [2023-12-19 00:20:14,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:20:14,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:20:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:20:14,963 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:20:14,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:20:14,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770260159] [2023-12-19 00:20:14,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770260159] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:20:14,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807217021] [2023-12-19 00:20:14,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:20:14,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:20:14,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:20:14,965 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:20:14,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 00:20:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:20:15,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:20:15,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:20:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 57 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:20:15,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:20:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:20:17,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807217021] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:20:17,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:20:17,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2023-12-19 00:20:17,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472888004] [2023-12-19 00:20:17,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:20:17,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 00:20:17,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:20:17,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 00:20:17,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2023-12-19 00:20:17,219 INFO L87 Difference]: Start difference. First operand 44385 states and 54505 transitions. Second operand has 32 states, 32 states have (on average 10.40625) internal successors, (333), 31 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:20:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:20:22,120 INFO L93 Difference]: Finished difference Result 69087 states and 84758 transitions. [2023-12-19 00:20:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 00:20:22,121 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.40625) internal successors, (333), 31 states have internal predecessors, (333), 0 states have call successors, (0), 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 140 [2023-12-19 00:20:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:20:22,158 INFO L225 Difference]: With dead ends: 69087 [2023-12-19 00:20:22,158 INFO L226 Difference]: Without dead ends: 44055 [2023-12-19 00:20:22,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=857, Invalid=3049, Unknown=0, NotChecked=0, Total=3906 [2023-12-19 00:20:22,165 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 15110 mSDsluCounter, 13860 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15110 SdHoareTripleChecker+Valid, 15388 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:20:22,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15110 Valid, 15388 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:20:22,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44055 states. [2023-12-19 00:20:25,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44055 to 36543. [2023-12-19 00:20:25,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36543 states, 36541 states have (on average 1.2205467830655976) internal successors, (44600), 36542 states have internal predecessors, (44600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:20:25,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36543 states to 36543 states and 44600 transitions. [2023-12-19 00:20:25,207 INFO L78 Accepts]: Start accepts. Automaton has 36543 states and 44600 transitions. Word has length 140 [2023-12-19 00:20:25,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:20:25,207 INFO L495 AbstractCegarLoop]: Abstraction has 36543 states and 44600 transitions. [2023-12-19 00:20:25,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.40625) internal successors, (333), 31 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:20:25,208 INFO L276 IsEmpty]: Start isEmpty. Operand 36543 states and 44600 transitions. [2023-12-19 00:20:25,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 00:20:25,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:20:25,212 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 00:20:25,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 00:20:25,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-19 00:20:25,413 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:20:25,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:20:25,413 INFO L85 PathProgramCache]: Analyzing trace with hash 592390141, now seen corresponding path program 1 times [2023-12-19 00:20:25,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:20:25,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188936636] [2023-12-19 00:20:25,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:20:25,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:20:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:20:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:20:26,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:20:26,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188936636] [2023-12-19 00:20:26,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188936636] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:20:26,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773894563] [2023-12-19 00:20:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:20:26,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:20:26,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:20:26,121 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:20:26,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 00:20:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:20:26,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 00:20:26,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:20:28,129 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:20:28,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:20:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:20:30,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773894563] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:20:30,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:20:30,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 53 [2023-12-19 00:20:30,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291748621] [2023-12-19 00:20:30,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:20:30,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-19 00:20:30,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:20:30,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-19 00:20:30,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=2458, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 00:20:30,809 INFO L87 Difference]: Start difference. First operand 36543 states and 44600 transitions. Second operand has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:20:43,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:20:43,429 INFO L93 Difference]: Finished difference Result 64195 states and 77818 transitions. [2023-12-19 00:20:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-19 00:20:43,429 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 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 141 [2023-12-19 00:20:43,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:20:43,484 INFO L225 Difference]: With dead ends: 64195 [2023-12-19 00:20:43,484 INFO L226 Difference]: Without dead ends: 56155 [2023-12-19 00:20:43,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 249 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4428 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=2646, Invalid=13356, Unknown=0, NotChecked=0, Total=16002 [2023-12-19 00:20:43,493 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 16728 mSDsluCounter, 26335 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16728 SdHoareTripleChecker+Valid, 27891 SdHoareTripleChecker+Invalid, 2599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 00:20:43,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16728 Valid, 27891 Invalid, 2599 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [135 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 00:20:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56155 states. [2023-12-19 00:20:47,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56155 to 43755. [2023-12-19 00:20:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43755 states, 43753 states have (on average 1.2129453980298495) internal successors, (53070), 43754 states have internal predecessors, (53070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:20:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43755 states to 43755 states and 53070 transitions. [2023-12-19 00:20:47,660 INFO L78 Accepts]: Start accepts. Automaton has 43755 states and 53070 transitions. Word has length 141 [2023-12-19 00:20:47,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:20:47,660 INFO L495 AbstractCegarLoop]: Abstraction has 43755 states and 53070 transitions. [2023-12-19 00:20:47,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:20:47,660 INFO L276 IsEmpty]: Start isEmpty. Operand 43755 states and 53070 transitions. [2023-12-19 00:20:47,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 00:20:47,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:20:47,665 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 00:20:47,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 00:20:47,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-19 00:20:47,866 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:20:47,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:20:47,866 INFO L85 PathProgramCache]: Analyzing trace with hash 120159649, now seen corresponding path program 1 times [2023-12-19 00:20:47,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:20:47,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743384666] [2023-12-19 00:20:47,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:20:47,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:20:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:20:49,866 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 13 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:20:49,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:20:49,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743384666] [2023-12-19 00:20:49,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743384666] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:20:49,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931144436] [2023-12-19 00:20:49,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:20:49,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:20:49,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:20:49,868 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:20:49,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 00:20:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:20:50,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-19 00:20:50,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:20:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 31 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:20:51,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:20:54,170 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 31 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:20:54,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931144436] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:20:54,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:20:54,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 19, 19] total 70 [2023-12-19 00:20:54,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398947582] [2023-12-19 00:20:54,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:20:54,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-19 00:20:54,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:20:54,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-19 00:20:54,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=4506, Unknown=0, NotChecked=0, Total=4830 [2023-12-19 00:20:54,173 INFO L87 Difference]: Start difference. First operand 43755 states and 53070 transitions. Second operand has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:21:52,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:21:52,684 INFO L93 Difference]: Finished difference Result 164526 states and 197483 transitions. [2023-12-19 00:21:52,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2023-12-19 00:21:52,685 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 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 141 [2023-12-19 00:21:52,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:21:52,837 INFO L225 Difference]: With dead ends: 164526 [2023-12-19 00:21:52,837 INFO L226 Difference]: Without dead ends: 139500 [2023-12-19 00:21:52,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22905 ImplicationChecksByTransitivity, 42.7s TimeCoverageRelationStatistics Valid=7526, Invalid=66186, Unknown=0, NotChecked=0, Total=73712 [2023-12-19 00:21:52,859 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 26210 mSDsluCounter, 51422 mSDsCounter, 0 mSdLazyCounter, 8581 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26210 SdHoareTripleChecker+Valid, 52965 SdHoareTripleChecker+Invalid, 8898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 8581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:21:52,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26210 Valid, 52965 Invalid, 8898 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [317 Valid, 8581 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-19 00:21:52,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139500 states. [2023-12-19 00:22:04,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139500 to 107209. [2023-12-19 00:22:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107209 states, 107207 states have (on average 1.2022069454419955) internal successors, (128885), 107208 states have internal predecessors, (128885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:22:04,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107209 states to 107209 states and 128885 transitions. [2023-12-19 00:22:04,668 INFO L78 Accepts]: Start accepts. Automaton has 107209 states and 128885 transitions. Word has length 141 [2023-12-19 00:22:04,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:22:04,668 INFO L495 AbstractCegarLoop]: Abstraction has 107209 states and 128885 transitions. [2023-12-19 00:22:04,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:22:04,668 INFO L276 IsEmpty]: Start isEmpty. Operand 107209 states and 128885 transitions. [2023-12-19 00:22:04,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 00:22:04,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:22:04,677 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 00:22:04,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 00:22:04,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-19 00:22:04,877 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:22:04,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:22:04,878 INFO L85 PathProgramCache]: Analyzing trace with hash -372027067, now seen corresponding path program 1 times [2023-12-19 00:22:04,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:22:04,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451723556] [2023-12-19 00:22:04,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:22:04,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:22:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:22:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:22:05,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:22:05,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451723556] [2023-12-19 00:22:05,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451723556] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:22:05,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507031176] [2023-12-19 00:22:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:22:05,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:22:05,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:22:05,648 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:22:05,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 00:22:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:22:05,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-19 00:22:05,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:22:07,499 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 40 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:22:07,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:22:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 40 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:22:11,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507031176] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:22:11,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:22:11,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23, 22] total 61 [2023-12-19 00:22:11,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695027847] [2023-12-19 00:22:11,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:22:11,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-19 00:22:11,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:22:11,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-19 00:22:11,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=3357, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 00:22:11,025 INFO L87 Difference]: Start difference. First operand 107209 states and 128885 transitions. Second operand has 61 states, 61 states have (on average 6.213114754098361) internal successors, (379), 61 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:26:19,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:26:19,610 INFO L93 Difference]: Finished difference Result 426839 states and 505069 transitions. [2023-12-19 00:26:19,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 738 states. [2023-12-19 00:26:19,610 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 6.213114754098361) internal successors, (379), 61 states have internal predecessors, (379), 0 states have call successors, (0), 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 141 [2023-12-19 00:26:19,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:26:20,237 INFO L225 Difference]: With dead ends: 426839 [2023-12-19 00:26:20,237 INFO L226 Difference]: Without dead ends: 370112 [2023-12-19 00:26:20,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1033 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 792 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283763 ImplicationChecksByTransitivity, 192.5s TimeCoverageRelationStatistics Valid=50715, Invalid=578927, Unknown=0, NotChecked=0, Total=629642 [2023-12-19 00:26:20,536 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 27563 mSDsluCounter, 49888 mSDsCounter, 0 mSdLazyCounter, 9347 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27563 SdHoareTripleChecker+Valid, 51481 SdHoareTripleChecker+Invalid, 9807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 9347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:26:20,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27563 Valid, 51481 Invalid, 9807 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [460 Valid, 9347 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-12-19 00:26:20,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370112 states. [2023-12-19 00:26:43,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370112 to 178536. [2023-12-19 00:26:43,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178536 states, 178534 states have (on average 1.1975254013241174) internal successors, (213799), 178535 states have internal predecessors, (213799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:26:44,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178536 states to 178536 states and 213799 transitions. [2023-12-19 00:26:44,064 INFO L78 Accepts]: Start accepts. Automaton has 178536 states and 213799 transitions. Word has length 141 [2023-12-19 00:26:44,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:26:44,064 INFO L495 AbstractCegarLoop]: Abstraction has 178536 states and 213799 transitions. [2023-12-19 00:26:44,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 6.213114754098361) internal successors, (379), 61 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:26:44,065 INFO L276 IsEmpty]: Start isEmpty. Operand 178536 states and 213799 transitions. [2023-12-19 00:26:44,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 00:26:44,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:26:44,075 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 00:26:44,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 00:26:44,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-19 00:26:44,276 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:26:44,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:26:44,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1231437577, now seen corresponding path program 1 times [2023-12-19 00:26:44,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:26:44,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851457895] [2023-12-19 00:26:44,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:26:44,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:26:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:26:45,294 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 13 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:26:45,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:26:45,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851457895] [2023-12-19 00:26:45,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851457895] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:26:45,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389269595] [2023-12-19 00:26:45,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:26:45,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:26:45,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:26:45,297 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:26:45,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 00:26:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:26:45,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 00:26:45,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:26:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:26:46,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:26:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 40 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:26:48,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389269595] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:26:48,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:26:48,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 42 [2023-12-19 00:26:48,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780541071] [2023-12-19 00:26:48,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:26:48,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-19 00:26:48,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:26:48,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-19 00:26:48,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1583, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 00:26:48,373 INFO L87 Difference]: Start difference. First operand 178536 states and 213799 transitions. Second operand has 42 states, 42 states have (on average 9.380952380952381) internal successors, (394), 42 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:27:36,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:27:36,774 INFO L93 Difference]: Finished difference Result 472551 states and 567383 transitions. [2023-12-19 00:27:36,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2023-12-19 00:27:36,775 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 9.380952380952381) internal successors, (394), 42 states have internal predecessors, (394), 0 states have call successors, (0), 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 141 [2023-12-19 00:27:36,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:27:37,365 INFO L225 Difference]: With dead ends: 472551 [2023-12-19 00:27:37,365 INFO L226 Difference]: Without dead ends: 329696 [2023-12-19 00:27:37,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9422 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=3732, Invalid=26024, Unknown=0, NotChecked=0, Total=29756 [2023-12-19 00:27:37,440 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 17395 mSDsluCounter, 28508 mSDsCounter, 0 mSdLazyCounter, 6574 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17395 SdHoareTripleChecker+Valid, 30138 SdHoareTripleChecker+Invalid, 6668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 6574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:27:37,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17395 Valid, 30138 Invalid, 6668 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 6574 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 00:27:37,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329696 states. [2023-12-19 00:28:00,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329696 to 159275. [2023-12-19 00:28:00,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159275 states, 159273 states have (on average 1.1929768385099797) internal successors, (190009), 159274 states have internal predecessors, (190009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:28:00,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159275 states to 159275 states and 190009 transitions. [2023-12-19 00:28:00,333 INFO L78 Accepts]: Start accepts. Automaton has 159275 states and 190009 transitions. Word has length 141 [2023-12-19 00:28:00,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:28:00,333 INFO L495 AbstractCegarLoop]: Abstraction has 159275 states and 190009 transitions. [2023-12-19 00:28:00,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 9.380952380952381) internal successors, (394), 42 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:28:00,333 INFO L276 IsEmpty]: Start isEmpty. Operand 159275 states and 190009 transitions. [2023-12-19 00:28:00,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 00:28:00,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:28:00,344 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 00:28:00,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-19 00:28:00,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:28:00,544 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:28:00,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:28:00,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1052434950, now seen corresponding path program 1 times [2023-12-19 00:28:00,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:28:00,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027784358] [2023-12-19 00:28:00,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:28:00,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:28:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:28:02,250 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 31 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:28:02,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:28:02,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027784358] [2023-12-19 00:28:02,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027784358] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:28:02,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706697120] [2023-12-19 00:28:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:28:02,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:28:02,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:28:02,252 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:28:02,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 00:28:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:28:02,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:28:02,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:28:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 35 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:28:03,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:28:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 36 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:28:04,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706697120] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:28:04,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:28:04,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 15, 15] total 54 [2023-12-19 00:28:04,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786512504] [2023-12-19 00:28:04,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:28:04,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-19 00:28:04,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:28:04,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-19 00:28:04,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2659, Unknown=0, NotChecked=0, Total=2862 [2023-12-19 00:28:04,509 INFO L87 Difference]: Start difference. First operand 159275 states and 190009 transitions. Second operand has 54 states, 54 states have (on average 7.018518518518518) internal successors, (379), 54 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:29:34,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:29:34,342 INFO L93 Difference]: Finished difference Result 368736 states and 437133 transitions. [2023-12-19 00:29:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 370 states. [2023-12-19 00:29:34,343 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 7.018518518518518) internal successors, (379), 54 states have internal predecessors, (379), 0 states have call successors, (0), 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 142 [2023-12-19 00:29:34,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:29:34,685 INFO L225 Difference]: With dead ends: 368736 [2023-12-19 00:29:34,685 INFO L226 Difference]: Without dead ends: 298064 [2023-12-19 00:29:34,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71140 ImplicationChecksByTransitivity, 44.5s TimeCoverageRelationStatistics Valid=19724, Invalid=155418, Unknown=0, NotChecked=0, Total=175142 [2023-12-19 00:29:34,727 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 25271 mSDsluCounter, 36982 mSDsCounter, 0 mSdLazyCounter, 9984 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25271 SdHoareTripleChecker+Valid, 38711 SdHoareTripleChecker+Invalid, 10230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 9984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:29:34,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25271 Valid, 38711 Invalid, 10230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [246 Valid, 9984 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-19 00:29:34,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298064 states. [2023-12-19 00:30:01,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298064 to 185220. [2023-12-19 00:30:01,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185220 states, 185218 states have (on average 1.1883834184582491) internal successors, (220110), 185219 states have internal predecessors, (220110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:30:01,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185220 states to 185220 states and 220110 transitions. [2023-12-19 00:30:01,962 INFO L78 Accepts]: Start accepts. Automaton has 185220 states and 220110 transitions. Word has length 142 [2023-12-19 00:30:01,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:30:01,963 INFO L495 AbstractCegarLoop]: Abstraction has 185220 states and 220110 transitions. [2023-12-19 00:30:01,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 7.018518518518518) internal successors, (379), 54 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:30:01,963 INFO L276 IsEmpty]: Start isEmpty. Operand 185220 states and 220110 transitions. [2023-12-19 00:30:01,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 00:30:01,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:30:01,972 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 00:30:01,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 00:30:02,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-19 00:30:02,175 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:30:02,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:30:02,176 INFO L85 PathProgramCache]: Analyzing trace with hash -624858322, now seen corresponding path program 1 times [2023-12-19 00:30:02,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:30:02,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551772251] [2023-12-19 00:30:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:30:02,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:30:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:30:04,208 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 49 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:30:04,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:30:04,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551772251] [2023-12-19 00:30:04,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551772251] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:30:04,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961817391] [2023-12-19 00:30:04,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:30:04,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:30:04,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:30:04,209 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:30:04,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 00:30:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:30:04,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-19 00:30:04,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-19 00:30:06,185 WARN L235 SmtUtils]: Removed 6 from assertion stack [2023-12-19 00:30:06,187 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-19 00:30:06,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 00:30:06,200 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:30:06,200 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:30:06,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-19 00:30:06,388 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 143 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 45 for 10ms.. [2023-12-19 00:30:06,389 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-19 00:30:06,391 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:30:06,393 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 00:30:06,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 12:30:06 BoogieIcfgContainer [2023-12-19 00:30:06,394 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 00:30:06,395 INFO L158 Benchmark]: Toolchain (without parser) took 805444.70ms. Allocated memory was 203.4MB in the beginning and 4.6GB in the end (delta: 4.4GB). Free memory was 139.5MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-19 00:30:06,395 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 203.4MB. Free memory is still 150.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 00:30:06,395 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1255.88ms. Allocated memory was 203.4MB in the beginning and 256.9MB in the end (delta: 53.5MB). Free memory was 139.2MB in the beginning and 177.0MB in the end (delta: -37.8MB). Peak memory consumption was 109.4MB. Max. memory is 8.0GB. [2023-12-19 00:30:06,395 INFO L158 Benchmark]: Boogie Procedure Inliner took 284.41ms. Allocated memory is still 256.9MB. Free memory was 177.0MB in the beginning and 162.3MB in the end (delta: 14.7MB). Peak memory consumption was 108.5MB. Max. memory is 8.0GB. [2023-12-19 00:30:06,395 INFO L158 Benchmark]: Boogie Preprocessor took 439.40ms. Allocated memory was 256.9MB in the beginning and 477.1MB in the end (delta: 220.2MB). Free memory was 162.3MB in the beginning and 359.4MB in the end (delta: -197.1MB). Peak memory consumption was 94.4MB. Max. memory is 8.0GB. [2023-12-19 00:30:06,395 INFO L158 Benchmark]: RCFGBuilder took 3333.63ms. Allocated memory was 477.1MB in the beginning and 702.5MB in the end (delta: 225.4MB). Free memory was 358.9MB in the beginning and 569.1MB in the end (delta: -210.1MB). Peak memory consumption was 250.0MB. Max. memory is 8.0GB. [2023-12-19 00:30:06,395 INFO L158 Benchmark]: TraceAbstraction took 800124.70ms. Allocated memory was 702.5MB in the beginning and 4.6GB in the end (delta: 3.9GB). Free memory was 568.2MB in the beginning and 3.0GB in the end (delta: -2.4GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-19 00:30:06,396 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 203.4MB. Free memory is still 150.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1255.88ms. Allocated memory was 203.4MB in the beginning and 256.9MB in the end (delta: 53.5MB). Free memory was 139.2MB in the beginning and 177.0MB in the end (delta: -37.8MB). Peak memory consumption was 109.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 284.41ms. Allocated memory is still 256.9MB. Free memory was 177.0MB in the beginning and 162.3MB in the end (delta: 14.7MB). Peak memory consumption was 108.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 439.40ms. Allocated memory was 256.9MB in the beginning and 477.1MB in the end (delta: 220.2MB). Free memory was 162.3MB in the beginning and 359.4MB in the end (delta: -197.1MB). Peak memory consumption was 94.4MB. Max. memory is 8.0GB. * RCFGBuilder took 3333.63ms. Allocated memory was 477.1MB in the beginning and 702.5MB in the end (delta: 225.4MB). Free memory was 358.9MB in the beginning and 569.1MB in the end (delta: -210.1MB). Peak memory consumption was 250.0MB. Max. memory is 8.0GB. * TraceAbstraction took 800124.70ms. Allocated memory was 702.5MB in the beginning and 4.6GB in the end (delta: 3.9GB). Free memory was 568.2MB in the beginning and 3.0GB in the end (delta: -2.4GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 439]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 439). Cancelled while NwaCegarLoop was analyzing trace of length 143 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 45 for 10ms.. - TimeoutResultAtElement [Line: 634]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 634). Cancelled while NwaCegarLoop was analyzing trace of length 143 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 45 for 10ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 836 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 800.1s, OverallIterations: 39, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 610.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 382241 SdHoareTripleChecker+Valid, 47.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 382241 mSDsluCounter, 440628 SdHoareTripleChecker+Invalid, 41.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 382781 mSDsCounter, 3969 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 70151 IncrementalHoareTripleChecker+Invalid, 74120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3969 mSolverCounterUnsat, 57847 mSDtfsCounter, 70151 mSolverCounterSat, 1.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6165 GetRequests, 3129 SyntacticMatches, 4 SemanticMatches, 3032 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448744 ImplicationChecksByTransitivity, 392.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=185220occurred in iteration=38, InterpolantAutomatonStates: 2475, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 121.2s AutomataMinimizationTime, 38 MinimizatonAttempts, 826340 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 57.5s InterpolantComputationTime, 4931 NumberOfCodeBlocks, 4931 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 6590 ConstructedInterpolants, 0 QuantifiedInterpolants, 127069 SizeOfPredicates, 135 NumberOfNonLiveVariables, 7753 ConjunctsInSsa, 352 ConjunctsInUnsatCore, 68 InterpolantComputations, 23 PerfectInterpolantSequences, 1191/3227 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown