/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.7_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:22:35,359 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:22:35,449 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 01:22:35,454 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:22:35,455 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:22:35,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:22:35,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:22:35,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:22:35,485 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:22:35,488 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:22:35,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:22:35,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:22:35,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:22:35,490 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:22:35,491 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:22:35,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:22:35,491 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:22:35,491 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:22:35,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:22:35,493 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:22:35,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:22:35,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:22:35,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:22:35,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:22:35,494 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:22:35,494 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:22:35,495 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:22:35,495 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:22:35,495 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:22:35,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:22:35,497 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:22:35,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:22:35,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:22:35,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:22:35,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:22:35,497 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:22:35,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:22:35,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:22:35,498 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:22:35,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:22:35,498 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:22:35,498 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:22:35,498 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:22:35,499 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:22:35,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:22:35,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:22:35,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:22:35,771 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:22:35,771 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:22:35,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-19 01:22:37,017 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:22:37,506 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:22:37,507 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-19 01:22:37,547 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70189cdda/33fbae3f741d4ed6b00d59c3bd6a2d0e/FLAG6250a173e [2023-12-19 01:22:37,565 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70189cdda/33fbae3f741d4ed6b00d59c3bd6a2d0e [2023-12-19 01:22:37,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:22:37,569 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:22:37,571 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:22:37,571 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:22:37,575 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:22:37,576 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:22:37" (1/1) ... [2023-12-19 01:22:37,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0f9e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:37, skipping insertion in model container [2023-12-19 01:22:37,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:22:37" (1/1) ... [2023-12-19 01:22:37,777 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:22:38,244 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[20528,20541] [2023-12-19 01:22:38,295 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[27589,27602] [2023-12-19 01:22:38,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:22:38,917 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:22:38,965 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[20528,20541] [2023-12-19 01:22:38,974 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[27589,27602] [2023-12-19 01:22:39,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:22:39,356 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:22:39,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:39 WrapperNode [2023-12-19 01:22:39,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:22:39,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:22:39,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:22:39,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:22:39,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:39" (1/1) ... [2023-12-19 01:22:39,426 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:39" (1/1) ... [2023-12-19 01:22:39,803 INFO L138 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5210 [2023-12-19 01:22:39,803 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:22:39,804 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:22:39,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:22:39,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:22:39,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:39" (1/1) ... [2023-12-19 01:22:39,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:39" (1/1) ... [2023-12-19 01:22:39,883 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:39" (1/1) ... [2023-12-19 01:22:40,191 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 01:22:40,192 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:39" (1/1) ... [2023-12-19 01:22:40,192 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:39" (1/1) ... [2023-12-19 01:22:40,327 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:39" (1/1) ... [2023-12-19 01:22:40,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:39" (1/1) ... [2023-12-19 01:22:40,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:39" (1/1) ... [2023-12-19 01:22:40,408 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:39" (1/1) ... [2023-12-19 01:22:40,498 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:22:40,500 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:22:40,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:22:40,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:22:40,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:39" (1/1) ... [2023-12-19 01:22:40,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:22:40,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:22:40,529 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 01:22:40,539 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 01:22:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:22:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:22:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:22:40,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:22:40,688 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:22:40,690 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:22:44,781 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:22:44,832 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:22:44,832 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 01:22:44,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:22:44 BoogieIcfgContainer [2023-12-19 01:22:44,833 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:22:44,835 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:22:44,835 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:22:44,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:22:44,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:22:37" (1/3) ... [2023-12-19 01:22:44,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13664bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:22:44, skipping insertion in model container [2023-12-19 01:22:44,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:39" (2/3) ... [2023-12-19 01:22:44,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13664bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:22:44, skipping insertion in model container [2023-12-19 01:22:44,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:22:44" (3/3) ... [2023-12-19 01:22:44,840 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-19 01:22:44,857 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:22:44,857 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:22:44,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:22:44,966 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;@181e1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:22:44,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:22:44,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:44,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-19 01:22:44,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:44,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:22:44,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:44,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:44,999 INFO L85 PathProgramCache]: Analyzing trace with hash -2135335152, now seen corresponding path program 1 times [2023-12-19 01:22:45,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:45,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844420106] [2023-12-19 01:22:45,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:45,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:45,301 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 01:22:45,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:45,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844420106] [2023-12-19 01:22:45,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844420106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:45,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:45,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:22:45,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350626329] [2023-12-19 01:22:45,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:45,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 01:22:45,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:45,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 01:22:45,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 01:22:45,349 INFO L87 Difference]: Start difference. First operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:45,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:45,474 INFO L93 Difference]: Finished difference Result 1675 states and 3293 transitions. [2023-12-19 01:22:45,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 01:22:45,476 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-19 01:22:45,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:45,498 INFO L225 Difference]: With dead ends: 1675 [2023-12-19 01:22:45,498 INFO L226 Difference]: Without dead ends: 861 [2023-12-19 01:22:45,506 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 01:22:45,509 INFO L413 NwaCegarLoop]: 1628 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, 1628 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 01:22:45,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1628 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:22:45,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-19 01:22:45,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-12-19 01:22:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.8963911525029105) internal successors, (1629), 860 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:45,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1629 transitions. [2023-12-19 01:22:45,597 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1629 transitions. Word has length 25 [2023-12-19 01:22:45,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:45,598 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1629 transitions. [2023-12-19 01:22:45,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:45,598 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1629 transitions. [2023-12-19 01:22:45,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-19 01:22:45,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:45,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:22:45,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:22:45,601 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:45,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:45,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1712633326, now seen corresponding path program 1 times [2023-12-19 01:22:45,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:45,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011183824] [2023-12-19 01:22:45,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:45,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:45,953 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 01:22:45,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:45,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011183824] [2023-12-19 01:22:45,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011183824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:45,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:45,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:22:45,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434910839] [2023-12-19 01:22:45,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:45,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:22:45,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:45,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:22:45,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:22:45,962 INFO L87 Difference]: Start difference. First operand 861 states and 1629 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:46,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:46,066 INFO L93 Difference]: Finished difference Result 917 states and 1718 transitions. [2023-12-19 01:22:46,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:22:46,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-19 01:22:46,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:46,071 INFO L225 Difference]: With dead ends: 917 [2023-12-19 01:22:46,071 INFO L226 Difference]: Without dead ends: 861 [2023-12-19 01:22:46,072 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 01:22:46,073 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 0 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4824 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:46,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4824 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:22:46,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-19 01:22:46,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-12-19 01:22:46,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.838183934807916) internal successors, (1579), 860 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states 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 01:22:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1579 transitions. [2023-12-19 01:22:46,092 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1579 transitions. Word has length 25 [2023-12-19 01:22:46,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:46,093 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1579 transitions. [2023-12-19 01:22:46,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:46,094 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1579 transitions. [2023-12-19 01:22:46,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:22:46,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:46,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:22:46,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:22:46,101 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:46,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:46,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1430296051, now seen corresponding path program 1 times [2023-12-19 01:22:46,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:46,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267794823] [2023-12-19 01:22:46,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:46,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:46,242 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 01:22:46,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:46,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267794823] [2023-12-19 01:22:46,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267794823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:46,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:46,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:22:46,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395278508] [2023-12-19 01:22:46,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:46,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:46,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:46,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:46,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:46,251 INFO L87 Difference]: Start difference. First operand 861 states and 1579 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:49,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:49,786 INFO L93 Difference]: Finished difference Result 2365 states and 4452 transitions. [2023-12-19 01:22:49,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:49,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-19 01:22:49,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:49,801 INFO L225 Difference]: With dead ends: 2365 [2023-12-19 01:22:49,802 INFO L226 Difference]: Without dead ends: 1612 [2023-12-19 01:22:49,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:49,806 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 881 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:49,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 612 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 01:22:49,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2023-12-19 01:22:49,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2023-12-19 01:22:49,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1610 states have (on average 1.5888198757763976) internal successors, (2558), 1611 states have internal predecessors, (2558), 0 states have call successors, (0), 0 states 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 01:22:49,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2558 transitions. [2023-12-19 01:22:49,846 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2558 transitions. Word has length 60 [2023-12-19 01:22:49,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:49,846 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2558 transitions. [2023-12-19 01:22:49,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:49,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2558 transitions. [2023-12-19 01:22:49,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 01:22:49,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:49,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:22:49,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:22:49,849 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:49,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:49,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1559562279, now seen corresponding path program 1 times [2023-12-19 01:22:49,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:49,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937093619] [2023-12-19 01:22:49,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:49,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:50,114 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 01:22:50,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:50,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937093619] [2023-12-19 01:22:50,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937093619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:50,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:50,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:22:50,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780688836] [2023-12-19 01:22:50,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:50,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:22:50,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:50,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:22:50,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:22:50,118 INFO L87 Difference]: Start difference. First operand 1612 states and 2558 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:50,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:50,564 INFO L93 Difference]: Finished difference Result 2354 states and 3762 transitions. [2023-12-19 01:22:50,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:22:50,565 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-19 01:22:50,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:50,575 INFO L225 Difference]: With dead ends: 2354 [2023-12-19 01:22:50,575 INFO L226 Difference]: Without dead ends: 2301 [2023-12-19 01:22:50,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-12-19 01:22:50,586 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 11475 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11475 SdHoareTripleChecker+Valid, 5036 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:50,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11475 Valid, 5036 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:22:50,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2023-12-19 01:22:50,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 1663. [2023-12-19 01:22:50,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1661 states have (on average 1.5900060204695967) internal successors, (2641), 1662 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states 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 01:22:50,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2641 transitions. [2023-12-19 01:22:50,635 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2641 transitions. Word has length 74 [2023-12-19 01:22:50,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:50,638 INFO L495 AbstractCegarLoop]: Abstraction has 1663 states and 2641 transitions. [2023-12-19 01:22:50,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:50,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2641 transitions. [2023-12-19 01:22:50,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 01:22:50,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:50,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:22:50,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:22:50,641 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:50,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:50,641 INFO L85 PathProgramCache]: Analyzing trace with hash -327839241, now seen corresponding path program 1 times [2023-12-19 01:22:50,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:50,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567922732] [2023-12-19 01:22:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:50,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:50,753 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 01:22:50,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:50,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567922732] [2023-12-19 01:22:50,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567922732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:50,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:50,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:22:50,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485238828] [2023-12-19 01:22:50,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:50,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:50,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:50,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:50,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:50,756 INFO L87 Difference]: Start difference. First operand 1663 states and 2641 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 01:22:50,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:50,800 INFO L93 Difference]: Finished difference Result 1860 states and 2960 transitions. [2023-12-19 01:22:50,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:50,801 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 01:22:50,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:50,809 INFO L225 Difference]: With dead ends: 1860 [2023-12-19 01:22:50,809 INFO L226 Difference]: Without dead ends: 1756 [2023-12-19 01:22:50,810 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 01:22:50,811 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 1496 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:50,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1654 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:22:50,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2023-12-19 01:22:50,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1754. [2023-12-19 01:22:50,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1752 states have (on average 1.5907534246575343) internal successors, (2787), 1753 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states 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 01:22:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2787 transitions. [2023-12-19 01:22:50,853 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2787 transitions. Word has length 76 [2023-12-19 01:22:50,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:50,853 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 2787 transitions. [2023-12-19 01:22:50,853 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 01:22:50,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2787 transitions. [2023-12-19 01:22:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 01:22:50,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:50,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:22:50,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:22:50,855 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:50,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:50,856 INFO L85 PathProgramCache]: Analyzing trace with hash -325694289, now seen corresponding path program 1 times [2023-12-19 01:22:50,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:50,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905290051] [2023-12-19 01:22:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:50,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:51,281 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 01:22:51,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:51,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905290051] [2023-12-19 01:22:51,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905290051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:51,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:51,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:22:51,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236341321] [2023-12-19 01:22:51,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:51,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:22:51,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:51,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:22:51,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:22:51,284 INFO L87 Difference]: Start difference. First operand 1754 states and 2787 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:51,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:51,680 INFO L93 Difference]: Finished difference Result 1951 states and 3103 transitions. [2023-12-19 01:22:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:22:51,681 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-19 01:22:51,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:51,690 INFO L225 Difference]: With dead ends: 1951 [2023-12-19 01:22:51,690 INFO L226 Difference]: Without dead ends: 1756 [2023-12-19 01:22:51,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-19 01:22:51,692 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 10539 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10539 SdHoareTripleChecker+Valid, 2059 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:51,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10539 Valid, 2059 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:22:51,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2023-12-19 01:22:51,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1754. [2023-12-19 01:22:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1752 states have (on average 1.5896118721461188) internal successors, (2785), 1753 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states 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 01:22:51,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2785 transitions. [2023-12-19 01:22:51,748 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2785 transitions. Word has length 76 [2023-12-19 01:22:51,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:51,750 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 2785 transitions. [2023-12-19 01:22:51,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:51,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2785 transitions. [2023-12-19 01:22:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-19 01:22:51,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:51,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:22:51,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:22:51,752 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:51,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:51,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1634971720, now seen corresponding path program 1 times [2023-12-19 01:22:51,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:51,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026091873] [2023-12-19 01:22:51,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:51,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:51,976 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 01:22:51,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:51,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026091873] [2023-12-19 01:22:51,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026091873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:51,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:51,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:22:51,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519163598] [2023-12-19 01:22:51,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:51,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:22:51,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:51,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:22:51,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:22:51,978 INFO L87 Difference]: Start difference. First operand 1754 states and 2785 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:52,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:52,024 INFO L93 Difference]: Finished difference Result 1762 states and 2794 transitions. [2023-12-19 01:22:52,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:22:52,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-19 01:22:52,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:52,032 INFO L225 Difference]: With dead ends: 1762 [2023-12-19 01:22:52,032 INFO L226 Difference]: Without dead ends: 1760 [2023-12-19 01:22:52,033 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 01:22:52,034 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4717 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:52,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4717 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:22:52,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2023-12-19 01:22:52,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1758. [2023-12-19 01:22:52,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1756 states have (on average 1.5876993166287017) internal successors, (2788), 1757 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states 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 01:22:52,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2788 transitions. [2023-12-19 01:22:52,085 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2788 transitions. Word has length 77 [2023-12-19 01:22:52,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:52,086 INFO L495 AbstractCegarLoop]: Abstraction has 1758 states and 2788 transitions. [2023-12-19 01:22:52,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:52,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2788 transitions. [2023-12-19 01:22:52,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:22:52,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:52,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:22:52,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:22:52,091 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:52,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:52,092 INFO L85 PathProgramCache]: Analyzing trace with hash -562302993, now seen corresponding path program 1 times [2023-12-19 01:22:52,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:52,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790375720] [2023-12-19 01:22:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:52,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:52,160 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 01:22:52,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:52,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790375720] [2023-12-19 01:22:52,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790375720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:52,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:52,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:22:52,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270503785] [2023-12-19 01:22:52,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:52,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:52,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:52,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:52,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:52,162 INFO L87 Difference]: Start difference. First operand 1758 states and 2788 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 01:22:52,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:52,201 INFO L93 Difference]: Finished difference Result 1968 states and 3121 transitions. [2023-12-19 01:22:52,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:52,202 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 01:22:52,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:52,209 INFO L225 Difference]: With dead ends: 1968 [2023-12-19 01:22:52,210 INFO L226 Difference]: Without dead ends: 1860 [2023-12-19 01:22:52,212 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 01:22:52,213 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1514 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:52,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1732 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:22:52,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2023-12-19 01:22:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1858. [2023-12-19 01:22:52,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1856 states have (on average 1.5867456896551724) internal successors, (2945), 1857 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states 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 01:22:52,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2945 transitions. [2023-12-19 01:22:52,260 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2945 transitions. Word has length 78 [2023-12-19 01:22:52,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:52,261 INFO L495 AbstractCegarLoop]: Abstraction has 1858 states and 2945 transitions. [2023-12-19 01:22:52,261 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 01:22:52,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2945 transitions. [2023-12-19 01:22:52,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:22:52,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:52,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:22:52,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:22:52,263 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:52,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:52,263 INFO L85 PathProgramCache]: Analyzing trace with hash 193081071, now seen corresponding path program 1 times [2023-12-19 01:22:52,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:52,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92057990] [2023-12-19 01:22:52,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:52,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:52,325 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 01:22:52,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:52,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92057990] [2023-12-19 01:22:52,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92057990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:52,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:52,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:22:52,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431271759] [2023-12-19 01:22:52,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:52,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:52,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:52,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:52,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:52,328 INFO L87 Difference]: Start difference. First operand 1858 states and 2945 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 01:22:52,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:52,374 INFO L93 Difference]: Finished difference Result 2428 states and 3845 transitions. [2023-12-19 01:22:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:52,375 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 01:22:52,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:52,383 INFO L225 Difference]: With dead ends: 2428 [2023-12-19 01:22:52,384 INFO L226 Difference]: Without dead ends: 2131 [2023-12-19 01:22:52,388 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 01:22:52,390 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1512 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:52,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:22:52,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2023-12-19 01:22:52,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 2129. [2023-12-19 01:22:52,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2127 states have (on average 1.5829807240244476) internal successors, (3367), 2128 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states 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 01:22:52,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3367 transitions. [2023-12-19 01:22:52,452 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3367 transitions. Word has length 78 [2023-12-19 01:22:52,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:52,452 INFO L495 AbstractCegarLoop]: Abstraction has 2129 states and 3367 transitions. [2023-12-19 01:22:52,452 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 01:22:52,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3367 transitions. [2023-12-19 01:22:52,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:22:52,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:52,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:22:52,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:22:52,454 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:52,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:52,455 INFO L85 PathProgramCache]: Analyzing trace with hash -217305617, now seen corresponding path program 1 times [2023-12-19 01:22:52,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:52,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113066925] [2023-12-19 01:22:52,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:52,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:52,526 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 01:22:52,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:52,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113066925] [2023-12-19 01:22:52,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113066925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:52,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:52,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:22:52,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628155449] [2023-12-19 01:22:52,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:52,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:52,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:52,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:52,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:52,532 INFO L87 Difference]: Start difference. First operand 2129 states and 3367 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 01:22:52,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:52,590 INFO L93 Difference]: Finished difference Result 3217 states and 5069 transitions. [2023-12-19 01:22:52,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:52,591 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 01:22:52,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:52,601 INFO L225 Difference]: With dead ends: 3217 [2023-12-19 01:22:52,601 INFO L226 Difference]: Without dead ends: 2649 [2023-12-19 01:22:52,603 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 01:22:52,603 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1510 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:52,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:22:52,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2023-12-19 01:22:52,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2647. [2023-12-19 01:22:52,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2647 states, 2645 states have (on average 1.5739130434782609) internal successors, (4163), 2646 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states 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 01:22:52,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 4163 transitions. [2023-12-19 01:22:52,685 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 4163 transitions. Word has length 78 [2023-12-19 01:22:52,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:52,685 INFO L495 AbstractCegarLoop]: Abstraction has 2647 states and 4163 transitions. [2023-12-19 01:22:52,685 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 01:22:52,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 4163 transitions. [2023-12-19 01:22:52,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:22:52,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:52,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:22:52,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:22:52,687 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:52,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:52,696 INFO L85 PathProgramCache]: Analyzing trace with hash -485888785, now seen corresponding path program 1 times [2023-12-19 01:22:52,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:52,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704444096] [2023-12-19 01:22:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:52,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:52,777 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 01:22:52,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:52,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704444096] [2023-12-19 01:22:52,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704444096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:52,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:52,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:22:52,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173132453] [2023-12-19 01:22:52,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:52,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:52,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:52,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:52,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:52,779 INFO L87 Difference]: Start difference. First operand 2647 states and 4163 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 01:22:52,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:52,856 INFO L93 Difference]: Finished difference Result 4723 states and 7373 transitions. [2023-12-19 01:22:52,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:52,857 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 01:22:52,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:52,872 INFO L225 Difference]: With dead ends: 4723 [2023-12-19 01:22:52,872 INFO L226 Difference]: Without dead ends: 3637 [2023-12-19 01:22:52,876 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 01:22:52,876 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 1508 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:52,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1742 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:22:52,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3637 states. [2023-12-19 01:22:52,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3637 to 3635. [2023-12-19 01:22:52,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3633 states have (on average 1.5576658409028352) internal successors, (5659), 3634 states have internal predecessors, (5659), 0 states have call successors, (0), 0 states 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 01:22:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 5659 transitions. [2023-12-19 01:22:52,986 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 5659 transitions. Word has length 78 [2023-12-19 01:22:52,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:52,987 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 5659 transitions. [2023-12-19 01:22:52,987 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 01:22:52,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 5659 transitions. [2023-12-19 01:22:52,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:22:52,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:52,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:22:52,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 01:22:52,989 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:52,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:52,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1071600913, now seen corresponding path program 1 times [2023-12-19 01:22:52,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:52,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122031631] [2023-12-19 01:22:52,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:52,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:53,056 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 01:22:53,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:53,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122031631] [2023-12-19 01:22:53,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122031631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:53,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:53,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:22:53,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553712088] [2023-12-19 01:22:53,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:53,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:53,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:53,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:53,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:53,059 INFO L87 Difference]: Start difference. First operand 3635 states and 5659 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 01:22:53,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:53,164 INFO L93 Difference]: Finished difference Result 7591 states and 11693 transitions. [2023-12-19 01:22:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:53,165 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 01:22:53,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:53,194 INFO L225 Difference]: With dead ends: 7591 [2023-12-19 01:22:53,195 INFO L226 Difference]: Without dead ends: 5517 [2023-12-19 01:22:53,199 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 01:22:53,200 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 1504 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:53,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:22:53,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2023-12-19 01:22:53,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 5515. [2023-12-19 01:22:53,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5515 states, 5513 states have (on average 1.5343732994739707) internal successors, (8459), 5514 states have internal predecessors, (8459), 0 states have call successors, (0), 0 states 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 01:22:53,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 8459 transitions. [2023-12-19 01:22:53,422 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 8459 transitions. Word has length 78 [2023-12-19 01:22:53,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:53,422 INFO L495 AbstractCegarLoop]: Abstraction has 5515 states and 8459 transitions. [2023-12-19 01:22:53,423 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 01:22:53,423 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 8459 transitions. [2023-12-19 01:22:53,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:22:53,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:53,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:22:53,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:22:53,424 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:53,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:53,425 INFO L85 PathProgramCache]: Analyzing trace with hash -182867473, now seen corresponding path program 1 times [2023-12-19 01:22:53,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:53,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122368023] [2023-12-19 01:22:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:53,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:53,489 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 01:22:53,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:53,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122368023] [2023-12-19 01:22:53,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122368023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:53,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:53,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:22:53,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197424388] [2023-12-19 01:22:53,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:53,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:53,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:53,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:53,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:53,492 INFO L87 Difference]: Start difference. First operand 5515 states and 8459 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 01:22:53,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:53,755 INFO L93 Difference]: Finished difference Result 13039 states and 19757 transitions. [2023-12-19 01:22:53,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:53,756 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 01:22:53,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:53,780 INFO L225 Difference]: With dead ends: 13039 [2023-12-19 01:22:53,780 INFO L226 Difference]: Without dead ends: 9085 [2023-12-19 01:22:53,790 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 01:22:53,792 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1502 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:53,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:22:53,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9085 states. [2023-12-19 01:22:54,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9085 to 9083. [2023-12-19 01:22:54,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9083 states, 9081 states have (on average 1.505891421649598) internal successors, (13675), 9082 states have internal predecessors, (13675), 0 states have call successors, (0), 0 states 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 01:22:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9083 states to 9083 states and 13675 transitions. [2023-12-19 01:22:54,128 INFO L78 Accepts]: Start accepts. Automaton has 9083 states and 13675 transitions. Word has length 78 [2023-12-19 01:22:54,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:54,129 INFO L495 AbstractCegarLoop]: Abstraction has 9083 states and 13675 transitions. [2023-12-19 01:22:54,129 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 01:22:54,130 INFO L276 IsEmpty]: Start isEmpty. Operand 9083 states and 13675 transitions. [2023-12-19 01:22:54,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:22:54,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:54,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:22:54,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:22:54,131 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:54,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:54,131 INFO L85 PathProgramCache]: Analyzing trace with hash -445944849, now seen corresponding path program 1 times [2023-12-19 01:22:54,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:54,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182148177] [2023-12-19 01:22:54,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:54,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:54,191 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 01:22:54,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:54,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182148177] [2023-12-19 01:22:54,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182148177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:54,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:54,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:22:54,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133978171] [2023-12-19 01:22:54,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:54,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:54,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:54,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:54,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:54,193 INFO L87 Difference]: Start difference. First operand 9083 states and 13675 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 01:22:54,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:54,512 INFO L93 Difference]: Finished difference Result 23359 states and 34733 transitions. [2023-12-19 01:22:54,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:54,512 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 01:22:54,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:54,551 INFO L225 Difference]: With dead ends: 23359 [2023-12-19 01:22:54,551 INFO L226 Difference]: Without dead ends: 15837 [2023-12-19 01:22:54,565 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 01:22:54,565 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1506 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:54,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1744 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:22:54,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15837 states. [2023-12-19 01:22:55,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15837 to 15835. [2023-12-19 01:22:55,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15835 states, 15833 states have (on average 1.4740731383818606) internal successors, (23339), 15834 states have internal predecessors, (23339), 0 states have call successors, (0), 0 states 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 01:22:55,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15835 states to 15835 states and 23339 transitions. [2023-12-19 01:22:55,237 INFO L78 Accepts]: Start accepts. Automaton has 15835 states and 23339 transitions. Word has length 78 [2023-12-19 01:22:55,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:55,238 INFO L495 AbstractCegarLoop]: Abstraction has 15835 states and 23339 transitions. [2023-12-19 01:22:55,238 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 01:22:55,238 INFO L276 IsEmpty]: Start isEmpty. Operand 15835 states and 23339 transitions. [2023-12-19 01:22:55,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:22:55,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:55,243 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:22:55,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:22:55,243 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:55,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:55,244 INFO L85 PathProgramCache]: Analyzing trace with hash 559870242, now seen corresponding path program 1 times [2023-12-19 01:22:55,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:55,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666204802] [2023-12-19 01:22:55,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:55,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:22:55,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:55,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666204802] [2023-12-19 01:22:55,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666204802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:55,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:55,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:22:55,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271182797] [2023-12-19 01:22:55,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:55,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:22:55,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:55,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:22:55,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:22:55,453 INFO L87 Difference]: Start difference. First operand 15835 states and 23339 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:58,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:58,013 INFO L93 Difference]: Finished difference Result 114347 states and 167283 transitions. [2023-12-19 01:22:58,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:22:58,014 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:22:58,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:58,376 INFO L225 Difference]: With dead ends: 114347 [2023-12-19 01:22:58,377 INFO L226 Difference]: Without dead ends: 104361 [2023-12-19 01:22:58,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:22:58,444 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 9843 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9843 SdHoareTripleChecker+Valid, 4635 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:58,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9843 Valid, 4635 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:22:58,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104361 states. [2023-12-19 01:23:00,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104361 to 27995. [2023-12-19 01:23:00,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27995 states, 27993 states have (on average 1.4624727610474046) internal successors, (40939), 27994 states have internal predecessors, (40939), 0 states have call successors, (0), 0 states 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 01:23:00,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27995 states to 27995 states and 40939 transitions. [2023-12-19 01:23:00,522 INFO L78 Accepts]: Start accepts. Automaton has 27995 states and 40939 transitions. Word has length 100 [2023-12-19 01:23:00,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:00,522 INFO L495 AbstractCegarLoop]: Abstraction has 27995 states and 40939 transitions. [2023-12-19 01:23:00,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:23:00,522 INFO L276 IsEmpty]: Start isEmpty. Operand 27995 states and 40939 transitions. [2023-12-19 01:23:00,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:23:00,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:00,528 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:23:00,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:23:00,529 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:00,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:00,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1315254306, now seen corresponding path program 1 times [2023-12-19 01:23:00,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:00,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422439114] [2023-12-19 01:23:00,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:00,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:23:01,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:01,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422439114] [2023-12-19 01:23:01,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422439114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:01,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:01,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:23:01,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338378532] [2023-12-19 01:23:01,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:01,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:23:01,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:01,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:23:01,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:23:01,026 INFO L87 Difference]: Start difference. First operand 27995 states and 40939 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:23:04,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:04,126 INFO L93 Difference]: Finished difference Result 128619 states and 188019 transitions. [2023-12-19 01:23:04,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:23:04,127 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:23:04,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:04,525 INFO L225 Difference]: With dead ends: 128619 [2023-12-19 01:23:04,525 INFO L226 Difference]: Without dead ends: 114345 [2023-12-19 01:23:04,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:23:04,606 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 9845 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9845 SdHoareTripleChecker+Valid, 4598 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:23:04,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9845 Valid, 4598 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:23:04,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114345 states. [2023-12-19 01:23:06,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114345 to 47259. [2023-12-19 01:23:07,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47259 states, 47257 states have (on average 1.4554245931819625) internal successors, (68779), 47258 states have internal predecessors, (68779), 0 states have call successors, (0), 0 states 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 01:23:07,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47259 states to 47259 states and 68779 transitions. [2023-12-19 01:23:07,117 INFO L78 Accepts]: Start accepts. Automaton has 47259 states and 68779 transitions. Word has length 100 [2023-12-19 01:23:07,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:07,118 INFO L495 AbstractCegarLoop]: Abstraction has 47259 states and 68779 transitions. [2023-12-19 01:23:07,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:23:07,118 INFO L276 IsEmpty]: Start isEmpty. Operand 47259 states and 68779 transitions. [2023-12-19 01:23:07,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:23:07,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:07,254 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:23:07,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:23:07,254 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:07,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:07,255 INFO L85 PathProgramCache]: Analyzing trace with hash 904867618, now seen corresponding path program 1 times [2023-12-19 01:23:07,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:07,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524779694] [2023-12-19 01:23:07,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:07,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 01:23:07,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:07,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524779694] [2023-12-19 01:23:07,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524779694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:07,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:07,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:23:07,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609092281] [2023-12-19 01:23:07,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:07,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:23:07,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:07,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:23:07,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:23:07,493 INFO L87 Difference]: Start difference. First operand 47259 states and 68779 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:23:10,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:10,575 INFO L93 Difference]: Finished difference Result 142891 states and 208691 transitions. [2023-12-19 01:23:10,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:23:10,576 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:23:10,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:10,850 INFO L225 Difference]: With dead ends: 142891 [2023-12-19 01:23:10,850 INFO L226 Difference]: Without dead ends: 128617 [2023-12-19 01:23:11,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:23:11,031 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 9868 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9868 SdHoareTripleChecker+Valid, 4510 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:23:11,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9868 Valid, 4510 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:23:11,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128617 states. [2023-12-19 01:23:13,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128617 to 61531. [2023-12-19 01:23:13,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61531 states, 61529 states have (on average 1.4538022720993353) internal successors, (89451), 61530 states have internal predecessors, (89451), 0 states have call successors, (0), 0 states 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 01:23:13,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61531 states to 61531 states and 89451 transitions. [2023-12-19 01:23:13,655 INFO L78 Accepts]: Start accepts. Automaton has 61531 states and 89451 transitions. Word has length 100 [2023-12-19 01:23:13,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:13,655 INFO L495 AbstractCegarLoop]: Abstraction has 61531 states and 89451 transitions. [2023-12-19 01:23:13,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:23:13,656 INFO L276 IsEmpty]: Start isEmpty. Operand 61531 states and 89451 transitions. [2023-12-19 01:23:13,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:23:13,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:13,665 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:23:13,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:23:13,665 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:13,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:13,666 INFO L85 PathProgramCache]: Analyzing trace with hash 636284450, now seen corresponding path program 1 times [2023-12-19 01:23:13,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:13,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759576342] [2023-12-19 01:23:13,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:13,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 01:23:13,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:13,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759576342] [2023-12-19 01:23:13,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759576342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:13,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:13,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:23:13,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395066890] [2023-12-19 01:23:13,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:13,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:23:13,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:13,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:23:13,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:23:13,902 INFO L87 Difference]: Start difference. First operand 61531 states and 89451 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:23:17,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:17,842 INFO L93 Difference]: Finished difference Result 157163 states and 229363 transitions. [2023-12-19 01:23:17,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:23:17,842 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:23:17,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:18,158 INFO L225 Difference]: With dead ends: 157163 [2023-12-19 01:23:18,159 INFO L226 Difference]: Without dead ends: 142889 [2023-12-19 01:23:18,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:23:18,188 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 9953 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9953 SdHoareTripleChecker+Valid, 4477 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:23:18,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9953 Valid, 4477 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:23:18,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142889 states. [2023-12-19 01:23:20,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142889 to 75803. [2023-12-19 01:23:21,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75803 states, 75801 states have (on average 1.4527908602788882) internal successors, (110123), 75802 states have internal predecessors, (110123), 0 states have call successors, (0), 0 states 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 01:23:21,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75803 states to 75803 states and 110123 transitions. [2023-12-19 01:23:21,421 INFO L78 Accepts]: Start accepts. Automaton has 75803 states and 110123 transitions. Word has length 100 [2023-12-19 01:23:21,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:21,421 INFO L495 AbstractCegarLoop]: Abstraction has 75803 states and 110123 transitions. [2023-12-19 01:23:21,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:23:21,422 INFO L276 IsEmpty]: Start isEmpty. Operand 75803 states and 110123 transitions. [2023-12-19 01:23:21,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:23:21,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:21,430 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:23:21,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:23:21,430 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:21,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:21,431 INFO L85 PathProgramCache]: Analyzing trace with hash 50572322, now seen corresponding path program 1 times [2023-12-19 01:23:21,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:21,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870010276] [2023-12-19 01:23:21,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:21,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:21,687 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 01:23:21,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:21,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870010276] [2023-12-19 01:23:21,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870010276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:21,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:21,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:23:21,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047996812] [2023-12-19 01:23:21,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:21,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:23:21,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:21,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:23:21,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:23:21,690 INFO L87 Difference]: Start difference. First operand 75803 states and 110123 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:23:25,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:25,864 INFO L93 Difference]: Finished difference Result 171435 states and 250035 transitions. [2023-12-19 01:23:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:23:25,865 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:23:25,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:26,122 INFO L225 Difference]: With dead ends: 171435 [2023-12-19 01:23:26,122 INFO L226 Difference]: Without dead ends: 157161 [2023-12-19 01:23:26,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:23:26,173 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 10036 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10036 SdHoareTripleChecker+Valid, 4511 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:23:26,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10036 Valid, 4511 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:23:26,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157161 states. [2023-12-19 01:23:29,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157161 to 90075. [2023-12-19 01:23:29,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90075 states, 90073 states have (on average 1.45209996336305) internal successors, (130795), 90074 states have internal predecessors, (130795), 0 states have call successors, (0), 0 states 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 01:23:29,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90075 states to 90075 states and 130795 transitions. [2023-12-19 01:23:29,699 INFO L78 Accepts]: Start accepts. Automaton has 90075 states and 130795 transitions. Word has length 100 [2023-12-19 01:23:29,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:29,700 INFO L495 AbstractCegarLoop]: Abstraction has 90075 states and 130795 transitions. [2023-12-19 01:23:29,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:23:29,700 INFO L276 IsEmpty]: Start isEmpty. Operand 90075 states and 130795 transitions. [2023-12-19 01:23:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:23:29,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:29,709 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:23:29,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:23:29,710 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:29,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:29,710 INFO L85 PathProgramCache]: Analyzing trace with hash 939305762, now seen corresponding path program 1 times [2023-12-19 01:23:29,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:29,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700964227] [2023-12-19 01:23:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:29,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:23:30,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:30,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700964227] [2023-12-19 01:23:30,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700964227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:30,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:30,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:23:30,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495669390] [2023-12-19 01:23:30,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:30,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:23:30,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:30,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:23:30,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:23:30,088 INFO L87 Difference]: Start difference. First operand 90075 states and 130795 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:23:34,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:34,419 INFO L93 Difference]: Finished difference Result 185707 states and 270707 transitions. [2023-12-19 01:23:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:23:34,420 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:23:34,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:34,702 INFO L225 Difference]: With dead ends: 185707 [2023-12-19 01:23:34,702 INFO L226 Difference]: Without dead ends: 171433 [2023-12-19 01:23:34,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:23:34,883 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 9909 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9909 SdHoareTripleChecker+Valid, 4520 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:23:34,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9909 Valid, 4520 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:23:34,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171433 states. [2023-12-19 01:23:38,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171433 to 104347. [2023-12-19 01:23:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104347 states, 104345 states have (on average 1.4515980641142365) internal successors, (151467), 104346 states have internal predecessors, (151467), 0 states have call successors, (0), 0 states 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 01:23:38,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104347 states to 104347 states and 151467 transitions. [2023-12-19 01:23:38,741 INFO L78 Accepts]: Start accepts. Automaton has 104347 states and 151467 transitions. Word has length 100 [2023-12-19 01:23:38,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:38,742 INFO L495 AbstractCegarLoop]: Abstraction has 104347 states and 151467 transitions. [2023-12-19 01:23:38,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:23:38,742 INFO L276 IsEmpty]: Start isEmpty. Operand 104347 states and 151467 transitions. [2023-12-19 01:23:38,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:23:38,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:38,752 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:23:38,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:23:38,752 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:38,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:38,753 INFO L85 PathProgramCache]: Analyzing trace with hash 676228386, now seen corresponding path program 1 times [2023-12-19 01:23:38,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:38,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25778675] [2023-12-19 01:23:38,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:38,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 01:23:39,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:39,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25778675] [2023-12-19 01:23:39,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25778675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:39,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:39,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:23:39,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862856346] [2023-12-19 01:23:39,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:39,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:23:39,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:39,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:23:39,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:23:39,119 INFO L87 Difference]: Start difference. First operand 104347 states and 151467 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:23:44,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:44,118 INFO L93 Difference]: Finished difference Result 199979 states and 291379 transitions. [2023-12-19 01:23:44,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:23:44,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:23:44,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:44,516 INFO L225 Difference]: With dead ends: 199979 [2023-12-19 01:23:44,516 INFO L226 Difference]: Without dead ends: 185705 [2023-12-19 01:23:44,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:23:44,568 INFO L413 NwaCegarLoop]: 1652 mSDtfsCounter, 9791 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9791 SdHoareTripleChecker+Valid, 4715 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:23:44,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9791 Valid, 4715 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:23:44,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185705 states. [2023-12-19 01:23:48,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185705 to 118619. [2023-12-19 01:23:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118619 states, 118617 states have (on average 1.4512169419223213) internal successors, (172139), 118618 states have internal predecessors, (172139), 0 states have call successors, (0), 0 states 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 01:23:49,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118619 states to 118619 states and 172139 transitions. [2023-12-19 01:23:49,075 INFO L78 Accepts]: Start accepts. Automaton has 118619 states and 172139 transitions. Word has length 100 [2023-12-19 01:23:49,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:49,075 INFO L495 AbstractCegarLoop]: Abstraction has 118619 states and 172139 transitions. [2023-12-19 01:23:49,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:23:49,076 INFO L276 IsEmpty]: Start isEmpty. Operand 118619 states and 172139 transitions. [2023-12-19 01:23:49,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 01:23:49,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:49,084 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:23:49,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:23:49,084 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:49,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1523502188, now seen corresponding path program 1 times [2023-12-19 01:23:49,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:49,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571185476] [2023-12-19 01:23:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:49,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:49,404 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:23:49,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:49,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571185476] [2023-12-19 01:23:49,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571185476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:49,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:49,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:23:49,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617966698] [2023-12-19 01:23:49,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:49,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:23:49,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:49,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:23:49,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:23:49,406 INFO L87 Difference]: Start difference. First operand 118619 states and 172139 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:23:53,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:53,096 INFO L93 Difference]: Finished difference Result 235679 states and 341805 transitions. [2023-12-19 01:23:53,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:23:53,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-19 01:23:53,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:53,271 INFO L225 Difference]: With dead ends: 235679 [2023-12-19 01:23:53,271 INFO L226 Difference]: Without dead ends: 118621 [2023-12-19 01:23:53,337 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 01:23:53,344 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 61 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:23:53,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3191 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:23:53,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118621 states. [2023-12-19 01:23:57,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118621 to 118619. [2023-12-19 01:23:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118619 states, 118617 states have (on average 1.4379979260982827) internal successors, (170571), 118618 states have internal predecessors, (170571), 0 states have call successors, (0), 0 states 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 01:23:57,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118619 states to 118619 states and 170571 transitions. [2023-12-19 01:23:57,658 INFO L78 Accepts]: Start accepts. Automaton has 118619 states and 170571 transitions. Word has length 101 [2023-12-19 01:23:57,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:57,658 INFO L495 AbstractCegarLoop]: Abstraction has 118619 states and 170571 transitions. [2023-12-19 01:23:57,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:23:57,658 INFO L276 IsEmpty]: Start isEmpty. Operand 118619 states and 170571 transitions. [2023-12-19 01:23:57,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-19 01:23:57,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:57,665 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:23:57,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:23:57,666 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:57,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:57,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1117544938, now seen corresponding path program 1 times [2023-12-19 01:23:57,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:57,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651945095] [2023-12-19 01:23:57,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:57,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:23:57,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:57,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651945095] [2023-12-19 01:23:57,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651945095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:57,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:57,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:23:57,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084095855] [2023-12-19 01:23:57,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:57,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:23:57,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:57,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:23:57,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:23:57,787 INFO L87 Difference]: Start difference. First operand 118619 states and 170571 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:23:59,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:59,384 INFO L93 Difference]: Finished difference Result 161077 states and 232068 transitions. [2023-12-19 01:23:59,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:23:59,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-19 01:23:59,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:59,439 INFO L225 Difference]: With dead ends: 161077 [2023-12-19 01:23:59,439 INFO L226 Difference]: Without dead ends: 44019 [2023-12-19 01:23:59,463 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 01:23:59,464 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 55 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:23:59,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3188 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:23:59,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44019 states. [2023-12-19 01:24:00,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44019 to 44012. [2023-12-19 01:24:00,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44012 states, 44010 states have (on average 1.4410361281526927) internal successors, (63420), 44011 states have internal predecessors, (63420), 0 states have call successors, (0), 0 states 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 01:24:00,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44012 states to 44012 states and 63420 transitions. [2023-12-19 01:24:00,934 INFO L78 Accepts]: Start accepts. Automaton has 44012 states and 63420 transitions. Word has length 102 [2023-12-19 01:24:00,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:24:00,934 INFO L495 AbstractCegarLoop]: Abstraction has 44012 states and 63420 transitions. [2023-12-19 01:24:00,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:24:00,934 INFO L276 IsEmpty]: Start isEmpty. Operand 44012 states and 63420 transitions. [2023-12-19 01:24:00,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 01:24:00,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:24:00,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:24:00,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:24:00,940 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:24:00,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:24:00,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1998084642, now seen corresponding path program 1 times [2023-12-19 01:24:00,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:24:00,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093977208] [2023-12-19 01:24:00,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:00,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:24:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:01,041 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:01,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:24:01,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093977208] [2023-12-19 01:24:01,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093977208] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:24:01,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:24:01,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:24:01,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944391905] [2023-12-19 01:24:01,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:24:01,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:24:01,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:24:01,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:24:01,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:24:01,044 INFO L87 Difference]: Start difference. First operand 44012 states and 63420 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:24:01,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:24:01,761 INFO L93 Difference]: Finished difference Result 65232 states and 93886 transitions. [2023-12-19 01:24:01,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:24:01,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-19 01:24:01,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:24:01,786 INFO L225 Difference]: With dead ends: 65232 [2023-12-19 01:24:01,786 INFO L226 Difference]: Without dead ends: 22798 [2023-12-19 01:24:01,807 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 01:24:01,808 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 57 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:24:01,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 3167 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:24:01,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22798 states. [2023-12-19 01:24:02,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22798 to 22796. [2023-12-19 01:24:02,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22796 states, 22794 states have (on average 1.4338861103799245) internal successors, (32684), 22795 states have internal predecessors, (32684), 0 states have call successors, (0), 0 states 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 01:24:02,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22796 states to 22796 states and 32684 transitions. [2023-12-19 01:24:02,610 INFO L78 Accepts]: Start accepts. Automaton has 22796 states and 32684 transitions. Word has length 103 [2023-12-19 01:24:02,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:24:02,610 INFO L495 AbstractCegarLoop]: Abstraction has 22796 states and 32684 transitions. [2023-12-19 01:24:02,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:24:02,610 INFO L276 IsEmpty]: Start isEmpty. Operand 22796 states and 32684 transitions. [2023-12-19 01:24:02,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-19 01:24:02,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:24:02,613 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:24:02,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:24:02,614 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:24:02,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:24:02,614 INFO L85 PathProgramCache]: Analyzing trace with hash 537082416, now seen corresponding path program 1 times [2023-12-19 01:24:02,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:24:02,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926553797] [2023-12-19 01:24:02,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:02,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:24:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:02,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:24:02,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926553797] [2023-12-19 01:24:02,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926553797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:24:02,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:24:02,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:24:02,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312533247] [2023-12-19 01:24:02,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:24:02,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:24:02,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:24:02,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:24:02,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:24:02,723 INFO L87 Difference]: Start difference. First operand 22796 states and 32684 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:24:03,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:24:03,078 INFO L93 Difference]: Finished difference Result 33408 states and 47782 transitions. [2023-12-19 01:24:03,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:24:03,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-12-19 01:24:03,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:24:03,090 INFO L225 Difference]: With dead ends: 33408 [2023-12-19 01:24:03,090 INFO L226 Difference]: Without dead ends: 12190 [2023-12-19 01:24:03,100 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 01:24:03,100 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 54 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:24:03,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3152 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:24:03,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12190 states. [2023-12-19 01:24:03,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12190 to 12188. [2023-12-19 01:24:03,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12188 states, 12186 states have (on average 1.4321352371573937) internal successors, (17452), 12187 states have internal predecessors, (17452), 0 states have call successors, (0), 0 states 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 01:24:03,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12188 states to 12188 states and 17452 transitions. [2023-12-19 01:24:03,412 INFO L78 Accepts]: Start accepts. Automaton has 12188 states and 17452 transitions. Word has length 105 [2023-12-19 01:24:03,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:24:03,413 INFO L495 AbstractCegarLoop]: Abstraction has 12188 states and 17452 transitions. [2023-12-19 01:24:03,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:24:03,413 INFO L276 IsEmpty]: Start isEmpty. Operand 12188 states and 17452 transitions. [2023-12-19 01:24:03,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-19 01:24:03,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:24:03,414 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:24:03,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:24:03,414 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:24:03,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:24:03,415 INFO L85 PathProgramCache]: Analyzing trace with hash 980333502, now seen corresponding path program 1 times [2023-12-19 01:24:03,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:24:03,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866837239] [2023-12-19 01:24:03,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:03,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:24:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:03,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:24:03,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866837239] [2023-12-19 01:24:03,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866837239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:24:03,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:24:03,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:24:03,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376168917] [2023-12-19 01:24:03,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:24:03,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:24:03,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:24:03,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:24:03,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:24:03,593 INFO L87 Difference]: Start difference. First operand 12188 states and 17452 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:24:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:24:03,767 INFO L93 Difference]: Finished difference Result 17496 states and 24934 transitions. [2023-12-19 01:24:03,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:24:03,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-19 01:24:03,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:24:03,775 INFO L225 Difference]: With dead ends: 17496 [2023-12-19 01:24:03,775 INFO L226 Difference]: Without dead ends: 6886 [2023-12-19 01:24:03,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:24:03,783 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 51 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:24:03,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 3137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:24:03,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6886 states. [2023-12-19 01:24:03,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6886 to 6884. [2023-12-19 01:24:03,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6884 states, 6882 states have (on average 1.4391165358907294) internal successors, (9904), 6883 states have internal predecessors, (9904), 0 states have call successors, (0), 0 states 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 01:24:03,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6884 states to 6884 states and 9904 transitions. [2023-12-19 01:24:03,953 INFO L78 Accepts]: Start accepts. Automaton has 6884 states and 9904 transitions. Word has length 107 [2023-12-19 01:24:03,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:24:03,953 INFO L495 AbstractCegarLoop]: Abstraction has 6884 states and 9904 transitions. [2023-12-19 01:24:03,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:24:03,954 INFO L276 IsEmpty]: Start isEmpty. Operand 6884 states and 9904 transitions. [2023-12-19 01:24:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-19 01:24:03,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:24:03,955 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:24:03,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 01:24:03,955 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:24:03,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:24:03,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1787844916, now seen corresponding path program 1 times [2023-12-19 01:24:03,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:24:03,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441270177] [2023-12-19 01:24:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:03,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:24:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:04,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:24:04,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441270177] [2023-12-19 01:24:04,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441270177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:24:04,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:24:04,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:24:04,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63851846] [2023-12-19 01:24:04,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:24:04,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:24:04,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:24:04,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:24:04,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:24:04,048 INFO L87 Difference]: Start difference. First operand 6884 states and 9904 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:24:04,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:24:04,162 INFO L93 Difference]: Finished difference Result 9540 states and 13612 transitions. [2023-12-19 01:24:04,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:24:04,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-19 01:24:04,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:24:04,167 INFO L225 Difference]: With dead ends: 9540 [2023-12-19 01:24:04,167 INFO L226 Difference]: Without dead ends: 4234 [2023-12-19 01:24:04,170 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 01:24:04,171 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 48 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:24:04,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3122 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:24:04,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2023-12-19 01:24:04,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 4232. [2023-12-19 01:24:04,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4232 states, 4230 states have (on average 1.457210401891253) internal successors, (6164), 4231 states have internal predecessors, (6164), 0 states have call successors, (0), 0 states 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 01:24:04,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4232 states to 4232 states and 6164 transitions. [2023-12-19 01:24:04,323 INFO L78 Accepts]: Start accepts. Automaton has 4232 states and 6164 transitions. Word has length 109 [2023-12-19 01:24:04,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:24:04,323 INFO L495 AbstractCegarLoop]: Abstraction has 4232 states and 6164 transitions. [2023-12-19 01:24:04,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:24:04,323 INFO L276 IsEmpty]: Start isEmpty. Operand 4232 states and 6164 transitions. [2023-12-19 01:24:04,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-19 01:24:04,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:24:04,324 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:24:04,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 01:24:04,324 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:24:04,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:24:04,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1119023962, now seen corresponding path program 1 times [2023-12-19 01:24:04,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:24:04,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687651384] [2023-12-19 01:24:04,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:04,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:24:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:04,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:24:04,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687651384] [2023-12-19 01:24:04,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687651384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:24:04,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:24:04,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:24:04,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544963810] [2023-12-19 01:24:04,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:24:04,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:24:04,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:24:04,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:24:04,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:24:04,415 INFO L87 Difference]: Start difference. First operand 4232 states and 6164 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:24:04,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:24:04,473 INFO L93 Difference]: Finished difference Result 5562 states and 8002 transitions. [2023-12-19 01:24:04,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:24:04,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-19 01:24:04,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:24:04,477 INFO L225 Difference]: With dead ends: 5562 [2023-12-19 01:24:04,477 INFO L226 Difference]: Without dead ends: 2908 [2023-12-19 01:24:04,478 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 01:24:04,479 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 45 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:24:04,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3107 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:24:04,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2023-12-19 01:24:04,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2906. [2023-12-19 01:24:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2906 states, 2904 states have (on average 1.484504132231405) internal successors, (4311), 2905 states have internal predecessors, (4311), 0 states have call successors, (0), 0 states 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 01:24:04,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 4311 transitions. [2023-12-19 01:24:04,536 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 4311 transitions. Word has length 111 [2023-12-19 01:24:04,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:24:04,537 INFO L495 AbstractCegarLoop]: Abstraction has 2906 states and 4311 transitions. [2023-12-19 01:24:04,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:24:04,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 4311 transitions. [2023-12-19 01:24:04,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-19 01:24:04,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:24:04,538 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:24:04,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 01:24:04,538 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:24:04,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:24:04,539 INFO L85 PathProgramCache]: Analyzing trace with hash 612202856, now seen corresponding path program 1 times [2023-12-19 01:24:04,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:24:04,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120668634] [2023-12-19 01:24:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:04,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:24:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:05,338 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:05,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:24:05,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120668634] [2023-12-19 01:24:05,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120668634] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:24:05,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694695386] [2023-12-19 01:24:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:05,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:24:05,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:24:05,342 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 01:24:05,351 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 01:24:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:05,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 01:24:05,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:24:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:24:05,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:24:05,969 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:24:05,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694695386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:24:05,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:24:05,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-19 01:24:05,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322972590] [2023-12-19 01:24:05,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:24:05,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 01:24:05,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:24:05,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 01:24:05,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-19 01:24:05,972 INFO L87 Difference]: Start difference. First operand 2906 states and 4311 transitions. Second operand has 18 states, 18 states have (on average 18.055555555555557) internal successors, (325), 18 states have internal predecessors, (325), 0 states have call successors, (0), 0 states 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 01:24:08,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:24:08,479 INFO L93 Difference]: Finished difference Result 13895 states and 19179 transitions. [2023-12-19 01:24:08,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 01:24:08,479 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 18.055555555555557) internal successors, (325), 18 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-19 01:24:08,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:24:08,490 INFO L225 Difference]: With dead ends: 13895 [2023-12-19 01:24:08,490 INFO L226 Difference]: Without dead ends: 12567 [2023-12-19 01:24:08,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=747, Invalid=3285, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 01:24:08,493 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 14336 mSDsluCounter, 6596 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14336 SdHoareTripleChecker+Valid, 8133 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:24:08,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14336 Valid, 8133 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:24:08,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12567 states. [2023-12-19 01:24:08,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12567 to 12047. [2023-12-19 01:24:08,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12047 states, 12045 states have (on average 1.3638854296388543) internal successors, (16428), 12046 states have internal predecessors, (16428), 0 states have call successors, (0), 0 states 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 01:24:08,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12047 states to 12047 states and 16428 transitions. [2023-12-19 01:24:08,808 INFO L78 Accepts]: Start accepts. Automaton has 12047 states and 16428 transitions. Word has length 113 [2023-12-19 01:24:08,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:24:08,808 INFO L495 AbstractCegarLoop]: Abstraction has 12047 states and 16428 transitions. [2023-12-19 01:24:08,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.055555555555557) internal successors, (325), 18 states have internal predecessors, (325), 0 states have call successors, (0), 0 states 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 01:24:08,808 INFO L276 IsEmpty]: Start isEmpty. Operand 12047 states and 16428 transitions. [2023-12-19 01:24:08,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 01:24:08,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:24:08,810 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:24:08,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 01:24:09,016 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,SelfDestructingSolverStorable28 [2023-12-19 01:24:09,016 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:24:09,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:24:09,017 INFO L85 PathProgramCache]: Analyzing trace with hash 607225572, now seen corresponding path program 1 times [2023-12-19 01:24:09,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:24:09,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712778159] [2023-12-19 01:24:09,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:09,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:24:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:09,804 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:09,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:24:09,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712778159] [2023-12-19 01:24:09,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712778159] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:24:09,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47147883] [2023-12-19 01:24:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:09,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:24:09,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:24:09,806 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 01:24:09,814 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 01:24:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:09,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 01:24:09,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:24:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:10,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:24:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:11,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47147883] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:24:11,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:24:11,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-12-19 01:24:11,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166201957] [2023-12-19 01:24:11,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:24:11,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-19 01:24:11,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:24:11,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-19 01:24:11,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2023-12-19 01:24:11,318 INFO L87 Difference]: Start difference. First operand 12047 states and 16428 transitions. Second operand has 29 states, 29 states have (on average 10.482758620689655) internal successors, (304), 28 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:24:14,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:24:14,545 INFO L93 Difference]: Finished difference Result 60412 states and 80541 transitions. [2023-12-19 01:24:14,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-19 01:24:14,546 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 10.482758620689655) internal successors, (304), 28 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-19 01:24:14,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:24:14,603 INFO L225 Difference]: With dead ends: 60412 [2023-12-19 01:24:14,603 INFO L226 Difference]: Without dead ends: 50150 [2023-12-19 01:24:14,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=947, Invalid=4023, Unknown=0, NotChecked=0, Total=4970 [2023-12-19 01:24:14,615 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 24709 mSDsluCounter, 8330 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24709 SdHoareTripleChecker+Valid, 9863 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:24:14,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24709 Valid, 9863 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:24:14,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50150 states. [2023-12-19 01:24:15,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50150 to 46878. [2023-12-19 01:24:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46878 states, 46876 states have (on average 1.3189478624456012) internal successors, (61827), 46877 states have internal predecessors, (61827), 0 states have call successors, (0), 0 states 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 01:24:15,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46878 states to 46878 states and 61827 transitions. [2023-12-19 01:24:15,975 INFO L78 Accepts]: Start accepts. Automaton has 46878 states and 61827 transitions. Word has length 114 [2023-12-19 01:24:15,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:24:15,976 INFO L495 AbstractCegarLoop]: Abstraction has 46878 states and 61827 transitions. [2023-12-19 01:24:15,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.482758620689655) internal successors, (304), 28 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:24:15,976 INFO L276 IsEmpty]: Start isEmpty. Operand 46878 states and 61827 transitions. [2023-12-19 01:24:15,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 01:24:15,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:24:15,978 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:24:15,987 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 01:24:16,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:24:16,179 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:24:16,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:24:16,180 INFO L85 PathProgramCache]: Analyzing trace with hash 374087396, now seen corresponding path program 1 times [2023-12-19 01:24:16,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:24:16,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996228871] [2023-12-19 01:24:16,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:16,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:24:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:16,994 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:16,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:24:16,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996228871] [2023-12-19 01:24:16,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996228871] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:24:16,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528223441] [2023-12-19 01:24:16,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:16,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:24:16,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:24:16,997 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 01:24:17,000 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 01:24:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:17,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 01:24:17,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:24:17,618 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:17,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:24:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:18,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528223441] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:24:18,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:24:18,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2023-12-19 01:24:18,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136601492] [2023-12-19 01:24:18,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:24:18,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 01:24:18,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:24:18,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 01:24:18,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2023-12-19 01:24:18,593 INFO L87 Difference]: Start difference. First operand 46878 states and 61827 transitions. Second operand has 26 states, 26 states have (on average 11.846153846153847) internal successors, (308), 25 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 01:24:20,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:24:20,169 INFO L93 Difference]: Finished difference Result 92108 states and 120770 transitions. [2023-12-19 01:24:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:24:20,169 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.846153846153847) internal successors, (308), 25 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-19 01:24:20,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:24:20,235 INFO L225 Difference]: With dead ends: 92108 [2023-12-19 01:24:20,235 INFO L226 Difference]: Without dead ends: 49450 [2023-12-19 01:24:20,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=311, Invalid=1021, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 01:24:20,254 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 15452 mSDsluCounter, 6493 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15452 SdHoareTripleChecker+Valid, 8030 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:24:20,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15452 Valid, 8030 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:24:20,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49450 states. [2023-12-19 01:24:21,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49450 to 42490. [2023-12-19 01:24:21,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42490 states, 42488 states have (on average 1.3065100734324986) internal successors, (55511), 42489 states have internal predecessors, (55511), 0 states have call successors, (0), 0 states 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 01:24:21,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42490 states to 42490 states and 55511 transitions. [2023-12-19 01:24:21,654 INFO L78 Accepts]: Start accepts. Automaton has 42490 states and 55511 transitions. Word has length 114 [2023-12-19 01:24:21,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:24:21,654 INFO L495 AbstractCegarLoop]: Abstraction has 42490 states and 55511 transitions. [2023-12-19 01:24:21,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.846153846153847) internal successors, (308), 25 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 01:24:21,655 INFO L276 IsEmpty]: Start isEmpty. Operand 42490 states and 55511 transitions. [2023-12-19 01:24:21,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 01:24:21,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:24:21,657 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:24:21,664 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 01:24:21,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:24:21,858 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:24:21,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:24:21,858 INFO L85 PathProgramCache]: Analyzing trace with hash 741073414, now seen corresponding path program 1 times [2023-12-19 01:24:21,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:24:21,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717184747] [2023-12-19 01:24:21,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:21,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:24:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:22,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:24:22,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717184747] [2023-12-19 01:24:22,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717184747] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:24:22,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499976497] [2023-12-19 01:24:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:22,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:24:22,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:24:22,404 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 01:24:22,406 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 01:24:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:22,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:24:22,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:24:23,027 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:23,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:24:24,287 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:24,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499976497] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:24:24,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:24:24,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-12-19 01:24:24,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114665300] [2023-12-19 01:24:24,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:24:24,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-19 01:24:24,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:24:24,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-19 01:24:24,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-12-19 01:24:24,289 INFO L87 Difference]: Start difference. First operand 42490 states and 55511 transitions. Second operand has 27 states, 27 states have (on average 11.222222222222221) internal successors, (303), 27 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 01:24:27,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:24:27,835 INFO L93 Difference]: Finished difference Result 143938 states and 185819 transitions. [2023-12-19 01:24:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 01:24:27,835 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 11.222222222222221) internal successors, (303), 27 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-19 01:24:27,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:24:27,988 INFO L225 Difference]: With dead ends: 143938 [2023-12-19 01:24:27,988 INFO L226 Difference]: Without dead ends: 103994 [2023-12-19 01:24:28,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=373, Invalid=1433, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 01:24:28,021 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 12626 mSDsluCounter, 6733 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12626 SdHoareTripleChecker+Valid, 8270 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:24:28,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12626 Valid, 8270 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:24:28,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103994 states. [2023-12-19 01:24:31,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103994 to 74180. [2023-12-19 01:24:31,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74180 states, 74178 states have (on average 1.2918924748577745) internal successors, (95830), 74179 states have internal predecessors, (95830), 0 states have call successors, (0), 0 states 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 01:24:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74180 states to 74180 states and 95830 transitions. [2023-12-19 01:24:31,225 INFO L78 Accepts]: Start accepts. Automaton has 74180 states and 95830 transitions. Word has length 115 [2023-12-19 01:24:31,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:24:31,225 INFO L495 AbstractCegarLoop]: Abstraction has 74180 states and 95830 transitions. [2023-12-19 01:24:31,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 11.222222222222221) internal successors, (303), 27 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 01:24:31,226 INFO L276 IsEmpty]: Start isEmpty. Operand 74180 states and 95830 transitions. [2023-12-19 01:24:31,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 01:24:31,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:24:31,228 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:24:31,234 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 01:24:31,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:24:31,429 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:24:31,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:24:31,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1822616602, now seen corresponding path program 1 times [2023-12-19 01:24:31,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:24:31,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508430728] [2023-12-19 01:24:31,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:31,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:24:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:32,661 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:32,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:24:32,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508430728] [2023-12-19 01:24:32,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508430728] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:24:32,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326113594] [2023-12-19 01:24:32,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:32,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:24:32,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:24:32,663 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 01:24:32,673 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 01:24:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:32,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 01:24:32,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:24:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:33,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:24:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:34,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326113594] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:24:34,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:24:34,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-12-19 01:24:34,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813920601] [2023-12-19 01:24:34,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:24:34,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-19 01:24:34,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:24:34,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-19 01:24:34,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2023-12-19 01:24:34,189 INFO L87 Difference]: Start difference. First operand 74180 states and 95830 transitions. Second operand has 29 states, 29 states have (on average 10.931034482758621) internal successors, (317), 28 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:24:42,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:24:42,673 INFO L93 Difference]: Finished difference Result 307635 states and 399348 transitions. [2023-12-19 01:24:42,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-19 01:24:42,673 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 10.931034482758621) internal successors, (317), 28 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-19 01:24:42,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:24:43,056 INFO L225 Difference]: With dead ends: 307635 [2023-12-19 01:24:43,056 INFO L226 Difference]: Without dead ends: 240500 [2023-12-19 01:24:43,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=850, Invalid=3310, Unknown=0, NotChecked=0, Total=4160 [2023-12-19 01:24:43,126 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 25718 mSDsluCounter, 6792 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25718 SdHoareTripleChecker+Valid, 8321 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:24:43,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25718 Valid, 8321 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:24:43,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240500 states.