/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_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:22:23,437 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:22:23,472 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 01:22:23,475 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:22:23,476 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:22:23,490 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:22:23,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:22:23,490 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:22:23,491 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:22:23,491 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:22:23,491 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:22:23,491 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:22:23,492 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:22:23,492 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:22:23,492 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:22:23,493 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:22:23,493 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:22:23,493 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:22:23,493 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:22:23,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:22:23,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:22:23,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:22:23,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:22:23,495 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:22:23,495 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:22:23,495 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:22:23,496 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:22:23,496 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:22:23,496 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:22:23,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:22:23,497 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:22:23,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:22:23,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:22:23,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:22:23,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:22:23,498 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:22:23,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:22:23,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:22:23,499 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:22:23,499 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:22:23,499 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:22:23,500 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:22:23,500 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:22:23,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:22:23,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:22:23,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:22:23,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:22:23,710 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:22:23,710 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:22:23,711 INFO L431 ainManager$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_label01.c [2023-12-19 01:22:24,919 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:22:25,338 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:22:25,340 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-19 01:22:25,369 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d366a5017/afc1f530f84d42b3bddcd4f6fcb36f94/FLAGcba38a11f [2023-12-19 01:22:25,382 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d366a5017/afc1f530f84d42b3bddcd4f6fcb36f94 [2023-12-19 01:22:25,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:22:25,385 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:22:25,387 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:22:25,387 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:22:25,391 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:22:25,391 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:22:25" (1/1) ... [2023-12-19 01:22:25,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e8ad70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:25, skipping insertion in model container [2023-12-19 01:22:25,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:22:25" (1/1) ... [2023-12-19 01:22:25,481 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:22:25,809 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_label01.c[20528,20541] [2023-12-19 01:22:25,874 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_label01.c[26083,26096] [2023-12-19 01:22:26,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:22:26,448 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:22:26,508 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_label01.c[20528,20541] [2023-12-19 01:22:26,515 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_label01.c[26083,26096] [2023-12-19 01:22:26,819 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:22:26,841 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:22:26,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:26 WrapperNode [2023-12-19 01:22:26,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:22:26,844 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:22:26,844 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:22:26,844 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:22:26,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:26" (1/1) ... [2023-12-19 01:22:26,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:26" (1/1) ... [2023-12-19 01:22:27,223 INFO L138 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5210 [2023-12-19 01:22:27,224 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:22:27,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:22:27,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:22:27,224 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:22:27,235 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:26" (1/1) ... [2023-12-19 01:22:27,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:26" (1/1) ... [2023-12-19 01:22:27,291 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:26" (1/1) ... [2023-12-19 01:22:27,452 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 01:22:27,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:26" (1/1) ... [2023-12-19 01:22:27,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:26" (1/1) ... [2023-12-19 01:22:27,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:26" (1/1) ... [2023-12-19 01:22:27,619 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:26" (1/1) ... [2023-12-19 01:22:27,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:26" (1/1) ... [2023-12-19 01:22:27,663 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:26" (1/1) ... [2023-12-19 01:22:27,731 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:22:27,733 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:22:27,733 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:22:27,733 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:22:27,734 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:26" (1/1) ... [2023-12-19 01:22:27,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:22:27,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:22:27,769 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 01:22:27,771 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 01:22:27,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:22:27,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:22:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:22:27,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:22:27,910 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:22:27,912 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:22:31,088 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:22:31,153 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:22:31,153 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 01:22:31,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:22:31 BoogieIcfgContainer [2023-12-19 01:22:31,154 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:22:31,156 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:22:31,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:22:31,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:22:31,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:22:25" (1/3) ... [2023-12-19 01:22:31,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726d1a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:22:31, skipping insertion in model container [2023-12-19 01:22:31,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:22:26" (2/3) ... [2023-12-19 01:22:31,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726d1a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:22:31, skipping insertion in model container [2023-12-19 01:22:31,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:22:31" (3/3) ... [2023-12-19 01:22:31,162 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-19 01:22:31,220 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:22:31,220 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:22:31,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:22:31,273 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;@1a691143, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:22:31,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:22:31,281 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 01:22:31,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-19 01:22:31,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:31,288 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 01:22:31,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:31,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:31,292 INFO L85 PathProgramCache]: Analyzing trace with hash 121576816, now seen corresponding path program 1 times [2023-12-19 01:22:31,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:31,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604150610] [2023-12-19 01:22:31,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:31,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:31,509 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 01:22:31,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:31,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604150610] [2023-12-19 01:22:31,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604150610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:31,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:31,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:22:31,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312948304] [2023-12-19 01:22:31,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:31,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 01:22:31,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:31,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 01:22:31,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 01:22:31,563 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 01:22:31,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:31,653 INFO L93 Difference]: Finished difference Result 1675 states and 3293 transitions. [2023-12-19 01:22:31,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 01:22:31,655 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 01:22:31,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:31,667 INFO L225 Difference]: With dead ends: 1675 [2023-12-19 01:22:31,668 INFO L226 Difference]: Without dead ends: 861 [2023-12-19 01:22:31,673 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 01:22:31,675 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 01:22:31,676 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 01:22:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-19 01:22:31,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-12-19 01:22:31,726 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 01:22:31,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1629 transitions. [2023-12-19 01:22:31,730 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1629 transitions. Word has length 25 [2023-12-19 01:22:31,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:31,730 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1629 transitions. [2023-12-19 01:22:31,730 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 01:22:31,731 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1629 transitions. [2023-12-19 01:22:31,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-19 01:22:31,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:31,732 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 01:22:31,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:22:31,732 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:31,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:31,733 INFO L85 PathProgramCache]: Analyzing trace with hash 544278642, now seen corresponding path program 1 times [2023-12-19 01:22:31,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:31,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471074798] [2023-12-19 01:22:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:31,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:31,958 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 01:22:31,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:31,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471074798] [2023-12-19 01:22:31,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471074798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:31,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:31,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:22:31,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451328006] [2023-12-19 01:22:31,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:31,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:22:31,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:31,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:22:31,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:22:31,964 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 01:22:32,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:32,083 INFO L93 Difference]: Finished difference Result 917 states and 1718 transitions. [2023-12-19 01:22:32,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:22:32,083 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 01:22:32,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:32,086 INFO L225 Difference]: With dead ends: 917 [2023-12-19 01:22:32,086 INFO L226 Difference]: Without dead ends: 861 [2023-12-19 01:22:32,087 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 01:22:32,088 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 0 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 01:22:32,088 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 01:22:32,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-19 01:22:32,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-12-19 01:22:32,110 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 01:22:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1579 transitions. [2023-12-19 01:22:32,111 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1579 transitions. Word has length 25 [2023-12-19 01:22:32,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:32,112 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1579 transitions. [2023-12-19 01:22:32,112 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 01:22:32,112 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1579 transitions. [2023-12-19 01:22:32,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-19 01:22:32,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:32,118 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] [2023-12-19 01:22:32,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:22:32,118 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:32,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:32,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1012000246, now seen corresponding path program 1 times [2023-12-19 01:22:32,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:32,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603856895] [2023-12-19 01:22:32,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:32,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:32,234 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 01:22:32,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:32,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603856895] [2023-12-19 01:22:32,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603856895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:32,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:32,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:22:32,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109106735] [2023-12-19 01:22:32,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:32,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:32,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:32,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:32,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:32,236 INFO L87 Difference]: Start difference. First operand 861 states and 1579 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 01:22:35,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:35,253 INFO L93 Difference]: Finished difference Result 2365 states and 4452 transitions. [2023-12-19 01:22:35,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:35,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-19 01:22:35,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:35,262 INFO L225 Difference]: With dead ends: 2365 [2023-12-19 01:22:35,262 INFO L226 Difference]: Without dead ends: 1612 [2023-12-19 01:22:35,263 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 01:22:35,268 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 908 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:35,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 214 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 01:22:35,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2023-12-19 01:22:35,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2023-12-19 01:22:35,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1610 states have (on average 1.8347826086956522) internal successors, (2954), 1611 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states 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 01:22:35,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2954 transitions. [2023-12-19 01:22:35,306 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2954 transitions. Word has length 47 [2023-12-19 01:22:35,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:35,307 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2954 transitions. [2023-12-19 01:22:35,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 01:22:35,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2954 transitions. [2023-12-19 01:22:35,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 01:22:35,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:35,309 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 01:22:35,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:22:35,309 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:35,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:35,310 INFO L85 PathProgramCache]: Analyzing trace with hash -478493049, now seen corresponding path program 1 times [2023-12-19 01:22:35,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:35,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998683733] [2023-12-19 01:22:35,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:35,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:35,476 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 01:22:35,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:35,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998683733] [2023-12-19 01:22:35,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998683733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:35,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:35,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:22:35,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119999824] [2023-12-19 01:22:35,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:35,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:22:35,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:35,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:22:35,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:22:35,479 INFO L87 Difference]: Start difference. First operand 1612 states and 2954 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 01:22:35,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:35,847 INFO L93 Difference]: Finished difference Result 2354 states and 4158 transitions. [2023-12-19 01:22:35,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:22:35,847 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 01:22:35,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:35,856 INFO L225 Difference]: With dead ends: 2354 [2023-12-19 01:22:35,857 INFO L226 Difference]: Without dead ends: 2301 [2023-12-19 01:22:35,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-12-19 01:22:35,865 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:35,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11475 Valid, 5036 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:22:35,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2023-12-19 01:22:35,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 1663. [2023-12-19 01:22:35,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1661 states have (on average 1.8284166164960867) internal successors, (3037), 1662 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states 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 01:22:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 3037 transitions. [2023-12-19 01:22:35,907 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 3037 transitions. Word has length 74 [2023-12-19 01:22:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:35,909 INFO L495 AbstractCegarLoop]: Abstraction has 1663 states and 3037 transitions. [2023-12-19 01:22:35,909 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 01:22:35,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 3037 transitions. [2023-12-19 01:22:35,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 01:22:35,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:35,912 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 01:22:35,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:22:35,912 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:35,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:35,913 INFO L85 PathProgramCache]: Analyzing trace with hash -394845033, now seen corresponding path program 1 times [2023-12-19 01:22:35,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:35,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429613793] [2023-12-19 01:22:35,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:35,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:36,034 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 01:22:36,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:36,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429613793] [2023-12-19 01:22:36,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429613793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:36,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:36,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:22:36,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310442125] [2023-12-19 01:22:36,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:36,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:36,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:36,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:36,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:36,036 INFO L87 Difference]: Start difference. First operand 1663 states and 3037 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 01:22:36,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:36,071 INFO L93 Difference]: Finished difference Result 1860 states and 3356 transitions. [2023-12-19 01:22:36,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:36,072 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 01:22:36,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:36,078 INFO L225 Difference]: With dead ends: 1860 [2023-12-19 01:22:36,078 INFO L226 Difference]: Without dead ends: 1756 [2023-12-19 01:22:36,079 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 01:22:36,079 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 01:22:36,080 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 01:22:36,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2023-12-19 01:22:36,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1754. [2023-12-19 01:22:36,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1752 states have (on average 1.8167808219178083) internal successors, (3183), 1753 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states 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 01:22:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 3183 transitions. [2023-12-19 01:22:36,119 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 3183 transitions. Word has length 76 [2023-12-19 01:22:36,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:36,120 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 3183 transitions. [2023-12-19 01:22:36,120 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 01:22:36,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 3183 transitions. [2023-12-19 01:22:36,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 01:22:36,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:36,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:22:36,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:22:36,122 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:36,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash -392700081, now seen corresponding path program 1 times [2023-12-19 01:22:36,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:36,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591653019] [2023-12-19 01:22:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:36,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:36,550 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 01:22:36,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:36,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591653019] [2023-12-19 01:22:36,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591653019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:36,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:36,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:22:36,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460531557] [2023-12-19 01:22:36,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:36,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:22:36,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:36,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:22:36,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:22:36,552 INFO L87 Difference]: Start difference. First operand 1754 states and 3183 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 01:22:36,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:36,878 INFO L93 Difference]: Finished difference Result 1951 states and 3499 transitions. [2023-12-19 01:22:36,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:22:36,878 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 01:22:36,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:36,884 INFO L225 Difference]: With dead ends: 1951 [2023-12-19 01:22:36,884 INFO L226 Difference]: Without dead ends: 1756 [2023-12-19 01:22:36,885 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 01:22:36,885 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 01:22:36,886 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 01:22:36,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2023-12-19 01:22:36,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1754. [2023-12-19 01:22:36,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1752 states have (on average 1.8156392694063928) internal successors, (3181), 1753 states have internal predecessors, (3181), 0 states have call successors, (0), 0 states 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 01:22:36,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 3181 transitions. [2023-12-19 01:22:36,922 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 3181 transitions. Word has length 76 [2023-12-19 01:22:36,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:36,922 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 3181 transitions. [2023-12-19 01:22:36,922 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 01:22:36,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 3181 transitions. [2023-12-19 01:22:36,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-19 01:22:36,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:36,923 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 01:22:36,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:22:36,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:36,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:36,924 INFO L85 PathProgramCache]: Analyzing trace with hash 582787194, now seen corresponding path program 1 times [2023-12-19 01:22:36,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:36,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997891606] [2023-12-19 01:22:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:36,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:37,095 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 01:22:37,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:37,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997891606] [2023-12-19 01:22:37,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997891606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:37,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:37,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:22:37,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987460468] [2023-12-19 01:22:37,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:37,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:22:37,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:37,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:22:37,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:22:37,097 INFO L87 Difference]: Start difference. First operand 1754 states and 3181 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 01:22:37,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:37,180 INFO L93 Difference]: Finished difference Result 1762 states and 3190 transitions. [2023-12-19 01:22:37,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:22:37,181 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 01:22:37,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:37,186 INFO L225 Difference]: With dead ends: 1762 [2023-12-19 01:22:37,186 INFO L226 Difference]: Without dead ends: 1760 [2023-12-19 01:22:37,187 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 01:22:37,187 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 01:22:37,188 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 01:22:37,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2023-12-19 01:22:37,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1758. [2023-12-19 01:22:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1756 states have (on average 1.8132118451025057) internal successors, (3184), 1757 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states 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 01:22:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 3184 transitions. [2023-12-19 01:22:37,240 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 3184 transitions. Word has length 77 [2023-12-19 01:22:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:37,241 INFO L495 AbstractCegarLoop]: Abstraction has 1758 states and 3184 transitions. [2023-12-19 01:22:37,241 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 01:22:37,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 3184 transitions. [2023-12-19 01:22:37,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:22:37,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:37,242 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 01:22:37,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:22:37,243 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:37,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:37,243 INFO L85 PathProgramCache]: Analyzing trace with hash -531282225, now seen corresponding path program 1 times [2023-12-19 01:22:37,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:37,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359133036] [2023-12-19 01:22:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:37,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:37,288 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 01:22:37,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:37,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359133036] [2023-12-19 01:22:37,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359133036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:37,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:37,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:22:37,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694149808] [2023-12-19 01:22:37,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:37,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:37,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:37,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:37,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:37,290 INFO L87 Difference]: Start difference. First operand 1758 states and 3184 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 01:22:37,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:37,322 INFO L93 Difference]: Finished difference Result 1968 states and 3517 transitions. [2023-12-19 01:22:37,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:37,323 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 01:22:37,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:37,329 INFO L225 Difference]: With dead ends: 1968 [2023-12-19 01:22:37,329 INFO L226 Difference]: Without dead ends: 1860 [2023-12-19 01:22:37,330 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 01:22:37,330 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 01:22:37,330 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 01:22:37,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2023-12-19 01:22:37,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1858. [2023-12-19 01:22:37,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1856 states have (on average 1.8001077586206897) internal successors, (3341), 1857 states have internal predecessors, (3341), 0 states have call successors, (0), 0 states 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 01:22:37,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 3341 transitions. [2023-12-19 01:22:37,368 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 3341 transitions. Word has length 78 [2023-12-19 01:22:37,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:37,368 INFO L495 AbstractCegarLoop]: Abstraction has 1858 states and 3341 transitions. [2023-12-19 01:22:37,368 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 01:22:37,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 3341 transitions. [2023-12-19 01:22:37,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:22:37,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:37,369 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 01:22:37,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:22:37,369 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:37,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:37,370 INFO L85 PathProgramCache]: Analyzing trace with hash 224101839, now seen corresponding path program 1 times [2023-12-19 01:22:37,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:37,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269720833] [2023-12-19 01:22:37,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:37,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:37,414 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 01:22:37,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:37,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269720833] [2023-12-19 01:22:37,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269720833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:37,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:37,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:22:37,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091139378] [2023-12-19 01:22:37,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:37,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:37,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:37,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:37,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:37,416 INFO L87 Difference]: Start difference. First operand 1858 states and 3341 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 01:22:37,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:37,452 INFO L93 Difference]: Finished difference Result 2428 states and 4241 transitions. [2023-12-19 01:22:37,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:37,453 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 01:22:37,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:37,459 INFO L225 Difference]: With dead ends: 2428 [2023-12-19 01:22:37,460 INFO L226 Difference]: Without dead ends: 2131 [2023-12-19 01:22:37,461 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 01:22:37,463 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 01:22:37,464 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 01:22:37,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2023-12-19 01:22:37,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 2129. [2023-12-19 01:22:37,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2127 states have (on average 1.769158439116126) internal successors, (3763), 2128 states have internal predecessors, (3763), 0 states have call successors, (0), 0 states 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 01:22:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3763 transitions. [2023-12-19 01:22:37,511 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3763 transitions. Word has length 78 [2023-12-19 01:22:37,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:37,511 INFO L495 AbstractCegarLoop]: Abstraction has 2129 states and 3763 transitions. [2023-12-19 01:22:37,511 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 01:22:37,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3763 transitions. [2023-12-19 01:22:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:22:37,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:37,512 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 01:22:37,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:22:37,512 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:37,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash -186284849, now seen corresponding path program 1 times [2023-12-19 01:22:37,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:37,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585735675] [2023-12-19 01:22:37,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:37,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:37,557 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 01:22:37,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:37,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585735675] [2023-12-19 01:22:37,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585735675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:37,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:37,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:22:37,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657640409] [2023-12-19 01:22:37,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:37,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:37,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:37,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:37,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:37,559 INFO L87 Difference]: Start difference. First operand 2129 states and 3763 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 01:22:37,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:37,603 INFO L93 Difference]: Finished difference Result 3217 states and 5465 transitions. [2023-12-19 01:22:37,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:37,604 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 01:22:37,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:37,611 INFO L225 Difference]: With dead ends: 3217 [2023-12-19 01:22:37,611 INFO L226 Difference]: Without dead ends: 2649 [2023-12-19 01:22:37,612 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 01:22:37,613 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 01:22:37,614 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 01:22:37,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2023-12-19 01:22:37,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2647. [2023-12-19 01:22:37,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2647 states, 2645 states have (on average 1.7236294896030246) internal successors, (4559), 2646 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states 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 01:22:37,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 4559 transitions. [2023-12-19 01:22:37,676 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 4559 transitions. Word has length 78 [2023-12-19 01:22:37,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:37,676 INFO L495 AbstractCegarLoop]: Abstraction has 2647 states and 4559 transitions. [2023-12-19 01:22:37,677 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 01:22:37,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 4559 transitions. [2023-12-19 01:22:37,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:22:37,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:37,677 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 01:22:37,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:22:37,678 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:37,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:37,678 INFO L85 PathProgramCache]: Analyzing trace with hash -454868017, now seen corresponding path program 1 times [2023-12-19 01:22:37,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:37,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163878055] [2023-12-19 01:22:37,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:37,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:37,723 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 01:22:37,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:37,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163878055] [2023-12-19 01:22:37,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163878055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:37,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:37,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:22:37,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473711861] [2023-12-19 01:22:37,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:37,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:37,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:37,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:37,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:37,725 INFO L87 Difference]: Start difference. First operand 2647 states and 4559 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 01:22:37,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:37,783 INFO L93 Difference]: Finished difference Result 4723 states and 7769 transitions. [2023-12-19 01:22:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:37,784 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 01:22:37,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:37,795 INFO L225 Difference]: With dead ends: 4723 [2023-12-19 01:22:37,795 INFO L226 Difference]: Without dead ends: 3637 [2023-12-19 01:22:37,797 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 01:22:37,798 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 01:22:37,798 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 01:22:37,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3637 states. [2023-12-19 01:22:37,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3637 to 3635. [2023-12-19 01:22:37,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3633 states have (on average 1.6666666666666667) internal successors, (6055), 3634 states have internal predecessors, (6055), 0 states have call successors, (0), 0 states 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 01:22:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 6055 transitions. [2023-12-19 01:22:37,885 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 6055 transitions. Word has length 78 [2023-12-19 01:22:37,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:37,885 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 6055 transitions. [2023-12-19 01:22:37,885 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 01:22:37,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 6055 transitions. [2023-12-19 01:22:37,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:22:37,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:37,886 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 01:22:37,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 01:22:37,887 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:37,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:37,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1040580145, now seen corresponding path program 1 times [2023-12-19 01:22:37,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:37,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624796068] [2023-12-19 01:22:37,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:37,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:37,934 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 01:22:37,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:37,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624796068] [2023-12-19 01:22:37,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624796068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:37,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:37,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:22:37,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409308696] [2023-12-19 01:22:37,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:37,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:37,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:37,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:37,936 INFO L87 Difference]: Start difference. First operand 3635 states and 6055 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 01:22:38,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:38,027 INFO L93 Difference]: Finished difference Result 7591 states and 12089 transitions. [2023-12-19 01:22:38,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:38,028 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 01:22:38,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:38,054 INFO L225 Difference]: With dead ends: 7591 [2023-12-19 01:22:38,054 INFO L226 Difference]: Without dead ends: 5517 [2023-12-19 01:22:38,060 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 01:22:38,060 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 01:22:38,061 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 01:22:38,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2023-12-19 01:22:38,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 5515. [2023-12-19 01:22:38,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5515 states, 5513 states have (on average 1.6062035189551969) internal successors, (8855), 5514 states have internal predecessors, (8855), 0 states have call successors, (0), 0 states 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 01:22:38,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 8855 transitions. [2023-12-19 01:22:38,223 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 8855 transitions. Word has length 78 [2023-12-19 01:22:38,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:38,223 INFO L495 AbstractCegarLoop]: Abstraction has 5515 states and 8855 transitions. [2023-12-19 01:22:38,224 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 01:22:38,224 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 8855 transitions. [2023-12-19 01:22:38,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:22:38,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:38,225 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 01:22:38,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:22:38,225 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:38,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:38,226 INFO L85 PathProgramCache]: Analyzing trace with hash -151846705, now seen corresponding path program 1 times [2023-12-19 01:22:38,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:38,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703528319] [2023-12-19 01:22:38,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:38,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:38,273 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 01:22:38,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:38,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703528319] [2023-12-19 01:22:38,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703528319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:38,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:38,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:22:38,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348209513] [2023-12-19 01:22:38,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:38,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:38,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:38,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:38,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:38,275 INFO L87 Difference]: Start difference. First operand 5515 states and 8855 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 01:22:38,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:38,431 INFO L93 Difference]: Finished difference Result 13039 states and 20153 transitions. [2023-12-19 01:22:38,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:38,432 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 01:22:38,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:38,448 INFO L225 Difference]: With dead ends: 13039 [2023-12-19 01:22:38,448 INFO L226 Difference]: Without dead ends: 9085 [2023-12-19 01:22:38,456 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 01:22:38,457 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 01:22:38,457 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 01:22:38,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9085 states. [2023-12-19 01:22:38,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9085 to 9083. [2023-12-19 01:22:38,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9083 states, 9081 states have (on average 1.549498953859707) internal successors, (14071), 9082 states have internal predecessors, (14071), 0 states have call successors, (0), 0 states 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 01:22:38,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9083 states to 9083 states and 14071 transitions. [2023-12-19 01:22:38,664 INFO L78 Accepts]: Start accepts. Automaton has 9083 states and 14071 transitions. Word has length 78 [2023-12-19 01:22:38,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:38,664 INFO L495 AbstractCegarLoop]: Abstraction has 9083 states and 14071 transitions. [2023-12-19 01:22:38,664 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 01:22:38,664 INFO L276 IsEmpty]: Start isEmpty. Operand 9083 states and 14071 transitions. [2023-12-19 01:22:38,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:22:38,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:38,667 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 01:22:38,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:22:38,668 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:38,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:38,668 INFO L85 PathProgramCache]: Analyzing trace with hash -414924081, now seen corresponding path program 1 times [2023-12-19 01:22:38,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:38,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891197841] [2023-12-19 01:22:38,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:38,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:38,713 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 01:22:38,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:38,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891197841] [2023-12-19 01:22:38,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891197841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:38,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:38,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:22:38,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465585212] [2023-12-19 01:22:38,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:38,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:22:38,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:38,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:22:38,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:22:38,715 INFO L87 Difference]: Start difference. First operand 9083 states and 14071 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 01:22:39,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:39,058 INFO L93 Difference]: Finished difference Result 23359 states and 35129 transitions. [2023-12-19 01:22:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:22:39,058 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 01:22:39,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:39,088 INFO L225 Difference]: With dead ends: 23359 [2023-12-19 01:22:39,089 INFO L226 Difference]: Without dead ends: 15837 [2023-12-19 01:22:39,100 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 01:22:39,100 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 01:22:39,101 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 01:22:39,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15837 states. [2023-12-19 01:22:39,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15837 to 15835. [2023-12-19 01:22:39,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15835 states, 15833 states have (on average 1.4990841912461315) internal successors, (23735), 15834 states have internal predecessors, (23735), 0 states have call successors, (0), 0 states 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 01:22:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15835 states to 15835 states and 23735 transitions. [2023-12-19 01:22:39,565 INFO L78 Accepts]: Start accepts. Automaton has 15835 states and 23735 transitions. Word has length 78 [2023-12-19 01:22:39,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:39,565 INFO L495 AbstractCegarLoop]: Abstraction has 15835 states and 23735 transitions. [2023-12-19 01:22:39,565 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 01:22:39,565 INFO L276 IsEmpty]: Start isEmpty. Operand 15835 states and 23735 transitions. [2023-12-19 01:22:39,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:22:39,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:39,569 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 01:22:39,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:22:39,569 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:39,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:39,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1560472033, now seen corresponding path program 1 times [2023-12-19 01:22:39,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:39,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124257315] [2023-12-19 01:22:39,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:39,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:39,772 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 01:22:39,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:39,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124257315] [2023-12-19 01:22:39,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124257315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:39,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:39,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:22:39,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587465270] [2023-12-19 01:22:39,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:39,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:22:39,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:39,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:22:39,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:22:39,774 INFO L87 Difference]: Start difference. First operand 15835 states and 23735 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 01:22:41,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:41,550 INFO L93 Difference]: Finished difference Result 114347 states and 167679 transitions. [2023-12-19 01:22:41,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:22:41,551 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 01:22:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:41,774 INFO L225 Difference]: With dead ends: 114347 [2023-12-19 01:22:41,774 INFO L226 Difference]: Without dead ends: 104361 [2023-12-19 01:22:41,820 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 01:22:41,821 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 01:22:41,821 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 01:22:41,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104361 states. [2023-12-19 01:22:43,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104361 to 27995. [2023-12-19 01:22:43,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27995 states, 27993 states have (on average 1.476619154788697) internal successors, (41335), 27994 states have internal predecessors, (41335), 0 states have call successors, (0), 0 states 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 01:22:43,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27995 states to 27995 states and 41335 transitions. [2023-12-19 01:22:43,461 INFO L78 Accepts]: Start accepts. Automaton has 27995 states and 41335 transitions. Word has length 100 [2023-12-19 01:22:43,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:43,461 INFO L495 AbstractCegarLoop]: Abstraction has 27995 states and 41335 transitions. [2023-12-19 01:22:43,461 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 01:22:43,461 INFO L276 IsEmpty]: Start isEmpty. Operand 27995 states and 41335 transitions. [2023-12-19 01:22:43,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:22:43,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:43,466 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 01:22:43,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:22:43,467 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:43,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:43,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1979111199, now seen corresponding path program 1 times [2023-12-19 01:22:43,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:43,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862008006] [2023-12-19 01:22:43,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:43,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:43,629 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 01:22:43,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:43,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862008006] [2023-12-19 01:22:43,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862008006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:43,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:43,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:22:43,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665846085] [2023-12-19 01:22:43,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:43,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:22:43,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:43,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:22:43,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:22:43,632 INFO L87 Difference]: Start difference. First operand 27995 states and 41335 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 01:22:45,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:45,960 INFO L93 Difference]: Finished difference Result 128619 states and 188415 transitions. [2023-12-19 01:22:45,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:22:45,961 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 01:22:45,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:46,172 INFO L225 Difference]: With dead ends: 128619 [2023-12-19 01:22:46,173 INFO L226 Difference]: Without dead ends: 114345 [2023-12-19 01:22:46,202 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 01:22:46,203 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 01:22:46,203 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 01:22:46,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114345 states. [2023-12-19 01:22:47,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114345 to 47259. [2023-12-19 01:22:47,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47259 states, 47257 states have (on average 1.4638043041242568) internal successors, (69175), 47258 states have internal predecessors, (69175), 0 states have call successors, (0), 0 states 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 01:22:47,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47259 states to 47259 states and 69175 transitions. [2023-12-19 01:22:47,952 INFO L78 Accepts]: Start accepts. Automaton has 47259 states and 69175 transitions. Word has length 100 [2023-12-19 01:22:47,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:47,954 INFO L495 AbstractCegarLoop]: Abstraction has 47259 states and 69175 transitions. [2023-12-19 01:22:47,954 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 01:22:47,954 INFO L276 IsEmpty]: Start isEmpty. Operand 47259 states and 69175 transitions. [2023-12-19 01:22:47,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:22:47,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:47,959 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 01:22:47,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:22:47,959 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:47,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:47,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1905469409, now seen corresponding path program 1 times [2023-12-19 01:22:47,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:47,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235196230] [2023-12-19 01:22:47,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:47,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:48,140 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 01:22:48,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:48,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235196230] [2023-12-19 01:22:48,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235196230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:48,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:48,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:22:48,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283972673] [2023-12-19 01:22:48,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:48,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:22:48,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:48,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:22:48,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:22:48,142 INFO L87 Difference]: Start difference. First operand 47259 states and 69175 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 01:22:51,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:51,177 INFO L93 Difference]: Finished difference Result 142891 states and 209087 transitions. [2023-12-19 01:22:51,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:22:51,178 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 01:22:51,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:51,471 INFO L225 Difference]: With dead ends: 142891 [2023-12-19 01:22:51,472 INFO L226 Difference]: Without dead ends: 128617 [2023-12-19 01:22:51,520 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 01:22:51,521 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 01:22:51,521 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 01:22:51,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128617 states. [2023-12-19 01:22:54,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128617 to 61531. [2023-12-19 01:22:54,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61531 states, 61529 states have (on average 1.460238261632726) internal successors, (89847), 61530 states have internal predecessors, (89847), 0 states have call successors, (0), 0 states 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 01:22:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61531 states to 61531 states and 89847 transitions. [2023-12-19 01:22:54,351 INFO L78 Accepts]: Start accepts. Automaton has 61531 states and 89847 transitions. Word has length 100 [2023-12-19 01:22:54,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:54,352 INFO L495 AbstractCegarLoop]: Abstraction has 61531 states and 89847 transitions. [2023-12-19 01:22:54,352 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 01:22:54,352 INFO L276 IsEmpty]: Start isEmpty. Operand 61531 states and 89847 transitions. [2023-12-19 01:22:54,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:22:54,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:54,366 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 01:22:54,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:22:54,366 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:54,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:54,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1636886241, now seen corresponding path program 1 times [2023-12-19 01:22:54,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:54,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314049558] [2023-12-19 01:22:54,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:54,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:54,554 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 01:22:54,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:54,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314049558] [2023-12-19 01:22:54,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314049558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:22:54,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:22:54,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:22:54,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85756053] [2023-12-19 01:22:54,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:22:54,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:22:54,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:54,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:22:54,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:22:54,556 INFO L87 Difference]: Start difference. First operand 61531 states and 89847 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 01:22:58,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:58,232 INFO L93 Difference]: Finished difference Result 157163 states and 229759 transitions. [2023-12-19 01:22:58,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:22:58,233 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 01:22:58,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:58,639 INFO L225 Difference]: With dead ends: 157163 [2023-12-19 01:22:58,639 INFO L226 Difference]: Without dead ends: 142889 [2023-12-19 01:22:58,677 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 01:22:58,678 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 01:22:58,678 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 01:22:58,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142889 states. [2023-12-19 01:23:01,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142889 to 75803. [2023-12-19 01:23:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75803 states, 75801 states have (on average 1.4580150657643038) internal successors, (110519), 75802 states have internal predecessors, (110519), 0 states have call successors, (0), 0 states 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 01:23:01,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75803 states to 75803 states and 110519 transitions. [2023-12-19 01:23:01,903 INFO L78 Accepts]: Start accepts. Automaton has 75803 states and 110519 transitions. Word has length 100 [2023-12-19 01:23:01,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:01,904 INFO L495 AbstractCegarLoop]: Abstraction has 75803 states and 110519 transitions. [2023-12-19 01:23:01,908 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 01:23:01,908 INFO L276 IsEmpty]: Start isEmpty. Operand 75803 states and 110519 transitions. [2023-12-19 01:23:01,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:23:01,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:01,930 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 01:23:01,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:23:01,930 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:01,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:01,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1051174113, now seen corresponding path program 1 times [2023-12-19 01:23:01,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:01,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792746258] [2023-12-19 01:23:01,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:01,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:02,111 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 01:23:02,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:02,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792746258] [2023-12-19 01:23:02,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792746258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:02,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:02,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:23:02,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417052939] [2023-12-19 01:23:02,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:02,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:23:02,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:02,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:23:02,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:23:02,113 INFO L87 Difference]: Start difference. First operand 75803 states and 110519 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 01:23:06,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:06,283 INFO L93 Difference]: Finished difference Result 171435 states and 250431 transitions. [2023-12-19 01:23:06,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:23:06,284 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 01:23:06,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:06,634 INFO L225 Difference]: With dead ends: 171435 [2023-12-19 01:23:06,634 INFO L226 Difference]: Without dead ends: 157161 [2023-12-19 01:23:06,820 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 01:23:06,820 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 01:23:06,823 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 01:23:06,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157161 states. [2023-12-19 01:23:10,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157161 to 90075. [2023-12-19 01:23:10,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90075 states, 90073 states have (on average 1.4564963973665805) internal successors, (131191), 90074 states have internal predecessors, (131191), 0 states have call successors, (0), 0 states 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 01:23:10,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90075 states to 90075 states and 131191 transitions. [2023-12-19 01:23:10,571 INFO L78 Accepts]: Start accepts. Automaton has 90075 states and 131191 transitions. Word has length 100 [2023-12-19 01:23:10,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:10,572 INFO L495 AbstractCegarLoop]: Abstraction has 90075 states and 131191 transitions. [2023-12-19 01:23:10,572 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 01:23:10,573 INFO L276 IsEmpty]: Start isEmpty. Operand 90075 states and 131191 transitions. [2023-12-19 01:23:10,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:23:10,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:10,598 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 01:23:10,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:23:10,598 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:10,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:10,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1939907553, now seen corresponding path program 1 times [2023-12-19 01:23:10,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:10,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265059761] [2023-12-19 01:23:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:10,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:10,768 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 01:23:10,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:10,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265059761] [2023-12-19 01:23:10,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265059761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:10,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:10,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:23:10,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287531205] [2023-12-19 01:23:10,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:10,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:23:10,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:10,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:23:10,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:23:10,770 INFO L87 Difference]: Start difference. First operand 90075 states and 131191 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 01:23:15,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:15,241 INFO L93 Difference]: Finished difference Result 185707 states and 271103 transitions. [2023-12-19 01:23:15,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:23:15,242 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 01:23:15,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:15,671 INFO L225 Difference]: With dead ends: 185707 [2023-12-19 01:23:15,671 INFO L226 Difference]: Without dead ends: 171433 [2023-12-19 01:23:15,732 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 01:23:15,735 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 01:23:15,735 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 01:23:15,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171433 states. [2023-12-19 01:23:19,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171433 to 104347. [2023-12-19 01:23:19,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104347 states, 104345 states have (on average 1.4553931668982703) internal successors, (151863), 104346 states have internal predecessors, (151863), 0 states have call successors, (0), 0 states 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 01:23:20,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104347 states to 104347 states and 151863 transitions. [2023-12-19 01:23:20,042 INFO L78 Accepts]: Start accepts. Automaton has 104347 states and 151863 transitions. Word has length 100 [2023-12-19 01:23:20,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:20,042 INFO L495 AbstractCegarLoop]: Abstraction has 104347 states and 151863 transitions. [2023-12-19 01:23:20,042 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 01:23:20,042 INFO L276 IsEmpty]: Start isEmpty. Operand 104347 states and 151863 transitions. [2023-12-19 01:23:20,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:23:20,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:20,059 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 01:23:20,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:23:20,059 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:20,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:20,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1676830177, now seen corresponding path program 1 times [2023-12-19 01:23:20,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:20,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204403317] [2023-12-19 01:23:20,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:20,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:20,245 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 01:23:20,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:20,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204403317] [2023-12-19 01:23:20,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204403317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:20,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:20,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:23:20,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348286707] [2023-12-19 01:23:20,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:20,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:23:20,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:20,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:23:20,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:23:20,247 INFO L87 Difference]: Start difference. First operand 104347 states and 151863 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 01:23:25,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:25,314 INFO L93 Difference]: Finished difference Result 199979 states and 291775 transitions. [2023-12-19 01:23:25,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:23:25,315 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 01:23:25,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:25,627 INFO L225 Difference]: With dead ends: 199979 [2023-12-19 01:23:25,627 INFO L226 Difference]: Without dead ends: 185705 [2023-12-19 01:23:25,669 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 01:23:25,670 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, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:23:25,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9791 Valid, 4715 Invalid, 293 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:23:25,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185705 states. [2023-12-19 01:23:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185705 to 118619. [2023-12-19 01:23:30,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118619 states, 118617 states have (on average 1.454555417857474) internal successors, (172535), 118618 states have internal predecessors, (172535), 0 states have call successors, (0), 0 states 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 01:23:30,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118619 states to 118619 states and 172535 transitions. [2023-12-19 01:23:30,269 INFO L78 Accepts]: Start accepts. Automaton has 118619 states and 172535 transitions. Word has length 100 [2023-12-19 01:23:30,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:30,269 INFO L495 AbstractCegarLoop]: Abstraction has 118619 states and 172535 transitions. [2023-12-19 01:23:30,269 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 01:23:30,269 INFO L276 IsEmpty]: Start isEmpty. Operand 118619 states and 172535 transitions. [2023-12-19 01:23:30,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 01:23:30,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:30,275 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 01:23:30,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:23:30,276 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:30,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:30,276 INFO L85 PathProgramCache]: Analyzing trace with hash -569646569, now seen corresponding path program 1 times [2023-12-19 01:23:30,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:30,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980526831] [2023-12-19 01:23:30,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:30,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:30,341 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 01:23:30,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:30,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980526831] [2023-12-19 01:23:30,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980526831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:30,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:30,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:23:30,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386543981] [2023-12-19 01:23:30,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:30,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:23:30,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:30,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:23:30,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:23:30,343 INFO L87 Difference]: Start difference. First operand 118619 states and 172535 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 01:23:33,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:33,897 INFO L93 Difference]: Finished difference Result 235679 states and 342201 transitions. [2023-12-19 01:23:33,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:23:33,899 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 01:23:33,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:34,114 INFO L225 Difference]: With dead ends: 235679 [2023-12-19 01:23:34,114 INFO L226 Difference]: Without dead ends: 118621 [2023-12-19 01:23:34,186 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 01:23:34,187 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 01:23:34,188 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 01:23:34,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118621 states. [2023-12-19 01:23:37,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118621 to 118619. [2023-12-19 01:23:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118619 states, 118617 states have (on average 1.4413364020334354) internal successors, (170967), 118618 states have internal predecessors, (170967), 0 states have call successors, (0), 0 states 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 01:23:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118619 states to 118619 states and 170967 transitions. [2023-12-19 01:23:38,225 INFO L78 Accepts]: Start accepts. Automaton has 118619 states and 170967 transitions. Word has length 101 [2023-12-19 01:23:38,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:38,225 INFO L495 AbstractCegarLoop]: Abstraction has 118619 states and 170967 transitions. [2023-12-19 01:23:38,225 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 01:23:38,225 INFO L276 IsEmpty]: Start isEmpty. Operand 118619 states and 170967 transitions. [2023-12-19 01:23:38,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-19 01:23:38,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:38,230 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 01:23:38,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:23:38,231 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:38,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:38,231 INFO L85 PathProgramCache]: Analyzing trace with hash 622269225, now seen corresponding path program 1 times [2023-12-19 01:23:38,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:38,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387443040] [2023-12-19 01:23:38,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:38,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:38,339 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 01:23:38,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:38,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387443040] [2023-12-19 01:23:38,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387443040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:38,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:38,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:23:38,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318575945] [2023-12-19 01:23:38,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:38,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:23:38,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:38,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:23:38,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:23:38,341 INFO L87 Difference]: Start difference. First operand 118619 states and 170967 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 01:23:39,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:39,860 INFO L93 Difference]: Finished difference Result 161077 states and 232464 transitions. [2023-12-19 01:23:39,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:23:39,861 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 01:23:39,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:39,923 INFO L225 Difference]: With dead ends: 161077 [2023-12-19 01:23:39,923 INFO L226 Difference]: Without dead ends: 44019 [2023-12-19 01:23:39,969 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 01:23:39,970 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 01:23:39,970 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 01:23:39,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44019 states. [2023-12-19 01:23:41,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44019 to 44012. [2023-12-19 01:23:41,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44012 states, 44010 states have (on average 1.4500340831629175) internal successors, (63816), 44011 states have internal predecessors, (63816), 0 states have call successors, (0), 0 states 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 01:23:41,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44012 states to 44012 states and 63816 transitions. [2023-12-19 01:23:41,454 INFO L78 Accepts]: Start accepts. Automaton has 44012 states and 63816 transitions. Word has length 102 [2023-12-19 01:23:41,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:41,454 INFO L495 AbstractCegarLoop]: Abstraction has 44012 states and 63816 transitions. [2023-12-19 01:23:41,454 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 01:23:41,454 INFO L276 IsEmpty]: Start isEmpty. Operand 44012 states and 63816 transitions. [2023-12-19 01:23:41,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 01:23:41,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:41,457 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 01:23:41,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:23:41,459 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:41,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:41,459 INFO L85 PathProgramCache]: Analyzing trace with hash -470589403, now seen corresponding path program 1 times [2023-12-19 01:23:41,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:41,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873814373] [2023-12-19 01:23:41,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:41,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:41,599 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 01:23:41,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:41,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873814373] [2023-12-19 01:23:41,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873814373] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:41,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:41,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:23:41,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316668769] [2023-12-19 01:23:41,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:41,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:23:41,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:41,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:23:41,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:23:41,601 INFO L87 Difference]: Start difference. First operand 44012 states and 63816 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 01:23:42,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:42,237 INFO L93 Difference]: Finished difference Result 65232 states and 94282 transitions. [2023-12-19 01:23:42,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:23:42,238 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 01:23:42,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:42,260 INFO L225 Difference]: With dead ends: 65232 [2023-12-19 01:23:42,260 INFO L226 Difference]: Without dead ends: 22798 [2023-12-19 01:23:42,269 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 01:23:42,270 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 01:23:42,271 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 01:23:42,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22798 states. [2023-12-19 01:23:42,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22798 to 22796. [2023-12-19 01:23:42,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22796 states, 22794 states have (on average 1.451259103272791) internal successors, (33080), 22795 states have internal predecessors, (33080), 0 states have call successors, (0), 0 states 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 01:23:42,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22796 states to 22796 states and 33080 transitions. [2023-12-19 01:23:42,938 INFO L78 Accepts]: Start accepts. Automaton has 22796 states and 33080 transitions. Word has length 103 [2023-12-19 01:23:42,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:42,938 INFO L495 AbstractCegarLoop]: Abstraction has 22796 states and 33080 transitions. [2023-12-19 01:23:42,938 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 01:23:42,938 INFO L276 IsEmpty]: Start isEmpty. Operand 22796 states and 33080 transitions. [2023-12-19 01:23:42,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-19 01:23:42,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:42,940 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 01:23:42,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:23:42,940 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:42,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:42,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1037649997, now seen corresponding path program 1 times [2023-12-19 01:23:42,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:42,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884218720] [2023-12-19 01:23:42,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:42,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:43,002 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 01:23:43,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:43,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884218720] [2023-12-19 01:23:43,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884218720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:43,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:43,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:23:43,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706585059] [2023-12-19 01:23:43,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:43,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:23:43,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:43,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:23:43,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:23:43,003 INFO L87 Difference]: Start difference. First operand 22796 states and 33080 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 01:23:43,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:43,296 INFO L93 Difference]: Finished difference Result 33408 states and 48178 transitions. [2023-12-19 01:23:43,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:23:43,296 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 01:23:43,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:43,310 INFO L225 Difference]: With dead ends: 33408 [2023-12-19 01:23:43,310 INFO L226 Difference]: Without dead ends: 12190 [2023-12-19 01:23:43,324 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 01:23:43,324 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 01:23:43,325 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 01:23:43,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12190 states. [2023-12-19 01:23:43,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12190 to 12188. [2023-12-19 01:23:43,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12188 states, 12186 states have (on average 1.4646315443952076) internal successors, (17848), 12187 states have internal predecessors, (17848), 0 states have call successors, (0), 0 states 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 01:23:43,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12188 states to 12188 states and 17848 transitions. [2023-12-19 01:23:43,727 INFO L78 Accepts]: Start accepts. Automaton has 12188 states and 17848 transitions. Word has length 105 [2023-12-19 01:23:43,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:43,727 INFO L495 AbstractCegarLoop]: Abstraction has 12188 states and 17848 transitions. [2023-12-19 01:23:43,727 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 01:23:43,727 INFO L276 IsEmpty]: Start isEmpty. Operand 12188 states and 17848 transitions. [2023-12-19 01:23:43,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-19 01:23:43,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:43,734 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 01:23:43,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:23:43,734 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:43,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:43,736 INFO L85 PathProgramCache]: Analyzing trace with hash -509949759, now seen corresponding path program 1 times [2023-12-19 01:23:43,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:43,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024191032] [2023-12-19 01:23:43,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:43,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:43,839 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 01:23:43,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:43,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024191032] [2023-12-19 01:23:43,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024191032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:43,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:43,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:23:43,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509407274] [2023-12-19 01:23:43,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:43,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:23:43,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:43,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:23:43,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:23:43,841 INFO L87 Difference]: Start difference. First operand 12188 states and 17848 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 01:23:43,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:43,992 INFO L93 Difference]: Finished difference Result 17496 states and 25330 transitions. [2023-12-19 01:23:43,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:23:43,993 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 01:23:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:44,001 INFO L225 Difference]: With dead ends: 17496 [2023-12-19 01:23:44,002 INFO L226 Difference]: Without dead ends: 6886 [2023-12-19 01:23:44,008 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 01:23:44,009 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 01:23:44,010 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 01:23:44,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6886 states. [2023-12-19 01:23:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6886 to 6884. [2023-12-19 01:23:44,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6884 states, 6882 states have (on average 1.4966579482708515) internal successors, (10300), 6883 states have internal predecessors, (10300), 0 states have call successors, (0), 0 states 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 01:23:44,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6884 states to 6884 states and 10300 transitions. [2023-12-19 01:23:44,234 INFO L78 Accepts]: Start accepts. Automaton has 6884 states and 10300 transitions. Word has length 107 [2023-12-19 01:23:44,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:44,234 INFO L495 AbstractCegarLoop]: Abstraction has 6884 states and 10300 transitions. [2023-12-19 01:23:44,234 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 01:23:44,234 INFO L276 IsEmpty]: Start isEmpty. Operand 6884 states and 10300 transitions. [2023-12-19 01:23:44,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-19 01:23:44,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:44,235 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 01:23:44,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 01:23:44,236 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:44,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:44,236 INFO L85 PathProgramCache]: Analyzing trace with hash 568095567, now seen corresponding path program 1 times [2023-12-19 01:23:44,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:44,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934999225] [2023-12-19 01:23:44,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:44,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:44,293 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 01:23:44,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:44,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934999225] [2023-12-19 01:23:44,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934999225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:44,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:44,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:23:44,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768181374] [2023-12-19 01:23:44,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:44,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:23:44,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:44,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:23:44,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:23:44,295 INFO L87 Difference]: Start difference. First operand 6884 states and 10300 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 01:23:44,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:44,379 INFO L93 Difference]: Finished difference Result 9540 states and 14008 transitions. [2023-12-19 01:23:44,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:23:44,379 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 01:23:44,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:44,385 INFO L225 Difference]: With dead ends: 9540 [2023-12-19 01:23:44,385 INFO L226 Difference]: Without dead ends: 4234 [2023-12-19 01:23:44,388 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 01:23:44,388 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 01:23:44,388 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 01:23:44,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2023-12-19 01:23:44,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 4232. [2023-12-19 01:23:44,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4232 states, 4230 states have (on average 1.5508274231678487) internal successors, (6560), 4231 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states 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 01:23:44,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4232 states to 4232 states and 6560 transitions. [2023-12-19 01:23:44,479 INFO L78 Accepts]: Start accepts. Automaton has 4232 states and 6560 transitions. Word has length 109 [2023-12-19 01:23:44,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:44,479 INFO L495 AbstractCegarLoop]: Abstraction has 4232 states and 6560 transitions. [2023-12-19 01:23:44,479 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 01:23:44,479 INFO L276 IsEmpty]: Start isEmpty. Operand 4232 states and 6560 transitions. [2023-12-19 01:23:44,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-19 01:23:44,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:44,480 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 01:23:44,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 01:23:44,480 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:44,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:44,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1729140573, now seen corresponding path program 1 times [2023-12-19 01:23:44,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:44,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831026427] [2023-12-19 01:23:44,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:44,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:44,539 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 01:23:44,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:44,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831026427] [2023-12-19 01:23:44,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831026427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:23:44,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:23:44,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:23:44,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233717559] [2023-12-19 01:23:44,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:23:44,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:23:44,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:44,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:23:44,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:23:44,541 INFO L87 Difference]: Start difference. First operand 4232 states and 6560 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 01:23:44,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:44,594 INFO L93 Difference]: Finished difference Result 5562 states and 8398 transitions. [2023-12-19 01:23:44,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:23:44,594 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 01:23:44,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:44,598 INFO L225 Difference]: With dead ends: 5562 [2023-12-19 01:23:44,598 INFO L226 Difference]: Without dead ends: 2908 [2023-12-19 01:23:44,600 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 01:23:44,600 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 01:23:44,600 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 01:23:44,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2023-12-19 01:23:44,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2906. [2023-12-19 01:23:44,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2906 states, 2904 states have (on average 1.6208677685950412) internal successors, (4707), 2905 states have internal predecessors, (4707), 0 states have call successors, (0), 0 states 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 01:23:44,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 4707 transitions. [2023-12-19 01:23:44,652 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 4707 transitions. Word has length 111 [2023-12-19 01:23:44,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:44,653 INFO L495 AbstractCegarLoop]: Abstraction has 2906 states and 4707 transitions. [2023-12-19 01:23:44,653 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 01:23:44,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 4707 transitions. [2023-12-19 01:23:44,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-19 01:23:44,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:44,654 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 01:23:44,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 01:23:44,654 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:44,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:44,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1477176085, now seen corresponding path program 1 times [2023-12-19 01:23:44,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:44,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200885573] [2023-12-19 01:23:44,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:44,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:45,298 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 01:23:45,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:45,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200885573] [2023-12-19 01:23:45,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200885573] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:23:45,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632554792] [2023-12-19 01:23:45,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:45,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:23:45,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:23:45,313 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 01:23:45,314 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 01:23:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:45,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 01:23:45,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:23:45,627 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 01:23:45,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:23:45,782 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 01:23:45,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632554792] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:23:45,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:23:45,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-19 01:23:45,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954972810] [2023-12-19 01:23:45,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:23:45,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 01:23:45,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:45,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 01:23:45,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-19 01:23:45,785 INFO L87 Difference]: Start difference. First operand 2906 states and 4707 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 01:23:47,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:47,896 INFO L93 Difference]: Finished difference Result 13895 states and 19575 transitions. [2023-12-19 01:23:47,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 01:23:47,896 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 01:23:47,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:47,913 INFO L225 Difference]: With dead ends: 13895 [2023-12-19 01:23:47,913 INFO L226 Difference]: Without dead ends: 12567 [2023-12-19 01:23:47,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=747, Invalid=3285, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 01:23:47,919 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 14336 mSDsluCounter, 6596 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:23:47,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14336 Valid, 8133 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:23:47,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12567 states. [2023-12-19 01:23:48,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12567 to 12047. [2023-12-19 01:23:48,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12047 states, 12045 states have (on average 1.3967621419676215) internal successors, (16824), 12046 states have internal predecessors, (16824), 0 states have call successors, (0), 0 states 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 01:23:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12047 states to 12047 states and 16824 transitions. [2023-12-19 01:23:48,286 INFO L78 Accepts]: Start accepts. Automaton has 12047 states and 16824 transitions. Word has length 113 [2023-12-19 01:23:48,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:48,286 INFO L495 AbstractCegarLoop]: Abstraction has 12047 states and 16824 transitions. [2023-12-19 01:23:48,286 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 01:23:48,286 INFO L276 IsEmpty]: Start isEmpty. Operand 12047 states and 16824 transitions. [2023-12-19 01:23:48,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 01:23:48,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:48,287 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 01:23:48,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 01:23:48,492 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 01:23:48,493 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:48,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:48,493 INFO L85 PathProgramCache]: Analyzing trace with hash 260959011, now seen corresponding path program 1 times [2023-12-19 01:23:48,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:48,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810472567] [2023-12-19 01:23:48,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:48,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:49,103 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 01:23:49,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:49,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810472567] [2023-12-19 01:23:49,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810472567] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:23:49,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641697067] [2023-12-19 01:23:49,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:49,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:23:49,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:23:49,118 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 01:23:49,120 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 01:23:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:49,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 01:23:49,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:23:49,794 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 01:23:49,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:23:50,502 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 01:23:50,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641697067] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:23:50,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:23:50,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-12-19 01:23:50,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593425862] [2023-12-19 01:23:50,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:23:50,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-19 01:23:50,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:50,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-19 01:23:50,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2023-12-19 01:23:50,505 INFO L87 Difference]: Start difference. First operand 12047 states and 16824 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 01:23:53,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:53,724 INFO L93 Difference]: Finished difference Result 60412 states and 80937 transitions. [2023-12-19 01:23:53,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-19 01:23:53,725 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 01:23:53,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:53,777 INFO L225 Difference]: With dead ends: 60412 [2023-12-19 01:23:53,777 INFO L226 Difference]: Without dead ends: 50150 [2023-12-19 01:23:53,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=947, Invalid=4023, Unknown=0, NotChecked=0, Total=4970 [2023-12-19 01:23:53,785 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 01:23:53,785 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 01:23:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50150 states. [2023-12-19 01:23:55,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50150 to 46878. [2023-12-19 01:23:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46878 states, 46876 states have (on average 1.3273956822254458) internal successors, (62223), 46877 states have internal predecessors, (62223), 0 states have call successors, (0), 0 states 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 01:23:55,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46878 states to 46878 states and 62223 transitions. [2023-12-19 01:23:55,149 INFO L78 Accepts]: Start accepts. Automaton has 46878 states and 62223 transitions. Word has length 114 [2023-12-19 01:23:55,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:23:55,149 INFO L495 AbstractCegarLoop]: Abstraction has 46878 states and 62223 transitions. [2023-12-19 01:23:55,149 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 01:23:55,149 INFO L276 IsEmpty]: Start isEmpty. Operand 46878 states and 62223 transitions. [2023-12-19 01:23:55,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 01:23:55,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:23:55,151 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 01:23:55,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 01:23:55,356 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 01:23:55,357 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:23:55,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:23:55,357 INFO L85 PathProgramCache]: Analyzing trace with hash 27820835, now seen corresponding path program 1 times [2023-12-19 01:23:55,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:23:55,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171726767] [2023-12-19 01:23:55,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:55,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:23:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:55,838 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 01:23:55,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:23:55,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171726767] [2023-12-19 01:23:55,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171726767] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:23:55,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102473335] [2023-12-19 01:23:55,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:23:55,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:23:55,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:23:55,841 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 01:23:55,844 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 01:23:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:23:55,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 01:23:55,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:23:56,439 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 01:23:56,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:23:57,320 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 01:23:57,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102473335] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:23:57,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:23:57,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2023-12-19 01:23:57,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927840557] [2023-12-19 01:23:57,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:23:57,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 01:23:57,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:23:57,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 01:23:57,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2023-12-19 01:23:57,322 INFO L87 Difference]: Start difference. First operand 46878 states and 62223 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 01:23:58,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:23:58,917 INFO L93 Difference]: Finished difference Result 92108 states and 121166 transitions. [2023-12-19 01:23:58,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:23:58,917 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 01:23:58,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:23:58,985 INFO L225 Difference]: With dead ends: 92108 [2023-12-19 01:23:58,985 INFO L226 Difference]: Without dead ends: 49450 [2023-12-19 01:23:59,005 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 01:23:59,005 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 15452 mSDsluCounter, 6493 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 01:23:59,005 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 01:23:59,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49450 states. [2023-12-19 01:24:00,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49450 to 42490. [2023-12-19 01:24:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42490 states, 42488 states have (on average 1.3158303520994163) internal successors, (55907), 42489 states have internal predecessors, (55907), 0 states have call successors, (0), 0 states 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 01:24:00,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42490 states to 42490 states and 55907 transitions. [2023-12-19 01:24:00,407 INFO L78 Accepts]: Start accepts. Automaton has 42490 states and 55907 transitions. Word has length 114 [2023-12-19 01:24:00,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:24:00,407 INFO L495 AbstractCegarLoop]: Abstraction has 42490 states and 55907 transitions. [2023-12-19 01:24:00,407 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 01:24:00,407 INFO L276 IsEmpty]: Start isEmpty. Operand 42490 states and 55907 transitions. [2023-12-19 01:24:00,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 01:24:00,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:24:00,409 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 01:24:00,445 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 01:24:00,624 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 01:24:00,625 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:24:00,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:24:00,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1403284215, now seen corresponding path program 1 times [2023-12-19 01:24:00,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:24:00,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680088810] [2023-12-19 01:24:00,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:00,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:24:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:00,951 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 01:24:00,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:24:00,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680088810] [2023-12-19 01:24:00,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680088810] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:24:00,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318884729] [2023-12-19 01:24:00,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:00,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:24:00,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:24:00,953 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 01:24:00,956 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 01:24:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:01,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:24:01,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:24:01,476 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 01:24:01,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:24:02,851 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 01:24:02,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318884729] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:24:02,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:24:02,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-12-19 01:24:02,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455589896] [2023-12-19 01:24:02,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:24:02,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-19 01:24:02,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:24:02,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-19 01:24:02,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-12-19 01:24:02,853 INFO L87 Difference]: Start difference. First operand 42490 states and 55907 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 01:24:06,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:24:06,407 INFO L93 Difference]: Finished difference Result 143938 states and 186215 transitions. [2023-12-19 01:24:06,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 01:24:06,407 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 01:24:06,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:24:06,530 INFO L225 Difference]: With dead ends: 143938 [2023-12-19 01:24:06,530 INFO L226 Difference]: Without dead ends: 103994 [2023-12-19 01:24:06,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=373, Invalid=1433, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 01:24:06,547 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 01:24:06,547 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 01:24:06,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103994 states. [2023-12-19 01:24:09,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103994 to 74180. [2023-12-19 01:24:09,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74180 states, 74178 states have (on average 1.2972309849281458) internal successors, (96226), 74179 states have internal predecessors, (96226), 0 states have call successors, (0), 0 states 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 01:24:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74180 states to 74180 states and 96226 transitions. [2023-12-19 01:24:09,467 INFO L78 Accepts]: Start accepts. Automaton has 74180 states and 96226 transitions. Word has length 115 [2023-12-19 01:24:09,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:24:09,467 INFO L495 AbstractCegarLoop]: Abstraction has 74180 states and 96226 transitions. [2023-12-19 01:24:09,467 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 01:24:09,467 INFO L276 IsEmpty]: Start isEmpty. Operand 74180 states and 96226 transitions. [2023-12-19 01:24:09,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 01:24:09,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:24:09,470 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 01:24:09,476 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 01:24:09,671 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 01:24:09,672 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:24:09,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:24:09,673 INFO L85 PathProgramCache]: Analyzing trace with hash 327993065, now seen corresponding path program 1 times [2023-12-19 01:24:09,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:24:09,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059779036] [2023-12-19 01:24:09,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:09,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:24:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:10,920 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 01:24:10,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:24:10,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059779036] [2023-12-19 01:24:10,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059779036] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:24:10,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931176092] [2023-12-19 01:24:10,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:10,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:24:10,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:24:10,932 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 01:24:10,934 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 01:24:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:11,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 01:24:11,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:24:11,505 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 01:24:11,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:24:12,227 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 01:24:12,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931176092] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:24:12,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:24:12,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-12-19 01:24:12,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131681379] [2023-12-19 01:24:12,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:24:12,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-19 01:24:12,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:24:12,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-19 01:24:12,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2023-12-19 01:24:12,229 INFO L87 Difference]: Start difference. First operand 74180 states and 96226 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 01:24:20,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:24:20,655 INFO L93 Difference]: Finished difference Result 307635 states and 399744 transitions. [2023-12-19 01:24:20,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-19 01:24:20,656 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 01:24:20,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:24:21,107 INFO L225 Difference]: With dead ends: 307635 [2023-12-19 01:24:21,107 INFO L226 Difference]: Without dead ends: 240500 [2023-12-19 01:24:21,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=850, Invalid=3310, Unknown=0, NotChecked=0, Total=4160 [2023-12-19 01:24:21,176 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 25718 mSDsluCounter, 6792 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25718 SdHoareTripleChecker+Valid, 8321 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:24:21,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25718 Valid, 8321 Invalid, 1139 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:24:21,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240500 states. [2023-12-19 01:24:28,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240500 to 203376. [2023-12-19 01:24:28,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203376 states, 203374 states have (on average 1.2900616597991876) internal successors, (262365), 203375 states have internal predecessors, (262365), 0 states have call successors, (0), 0 states 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 01:24:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203376 states to 203376 states and 262365 transitions. [2023-12-19 01:24:29,477 INFO L78 Accepts]: Start accepts. Automaton has 203376 states and 262365 transitions. Word has length 115 [2023-12-19 01:24:29,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:24:29,477 INFO L495 AbstractCegarLoop]: Abstraction has 203376 states and 262365 transitions. [2023-12-19 01:24:29,478 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2023-12-19 01:24:29,478 INFO L276 IsEmpty]: Start isEmpty. Operand 203376 states and 262365 transitions. [2023-12-19 01:24:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-19 01:24:29,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:24:29,481 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:24:29,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 01:24:29,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-19 01:24:29,689 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:24:29,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:24:29,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1119483977, now seen corresponding path program 1 times [2023-12-19 01:24:29,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:24:29,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337229783] [2023-12-19 01:24:29,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:29,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:24:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:29,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:24:29,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337229783] [2023-12-19 01:24:29,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337229783] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:24:29,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103779907] [2023-12-19 01:24:29,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:24:29,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:24:29,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:24:29,986 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:24:29,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 01:24:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:24:30,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 01:24:30,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:24:30,712 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:30,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:24:31,315 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:24:31,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103779907] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:24:31,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:24:31,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-12-19 01:24:31,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958798618] [2023-12-19 01:24:31,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:24:31,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 01:24:31,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:24:31,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 01:24:31,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2023-12-19 01:24:31,318 INFO L87 Difference]: Start difference. First operand 203376 states and 262365 transitions. Second operand has 26 states, 26 states have (on average 11.73076923076923) internal successors, (305), 25 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 01:24:56,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:24:56,251 INFO L93 Difference]: Finished difference Result 1009910 states and 1295130 transitions. [2023-12-19 01:24:56,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 01:24:56,252 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.73076923076923) internal successors, (305), 25 states have internal predecessors, (305), 0 states have call successors, (0), 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 117 [2023-12-19 01:24:56,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:24:58,320 INFO L225 Difference]: With dead ends: 1009910 [2023-12-19 01:24:58,320 INFO L226 Difference]: Without dead ends: 813846 [2023-12-19 01:24:58,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=712, Invalid=2480, Unknown=0, NotChecked=0, Total=3192 [2023-12-19 01:24:58,507 INFO L413 NwaCegarLoop]: 1609 mSDtfsCounter, 20116 mSDsluCounter, 7274 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20116 SdHoareTripleChecker+Valid, 8883 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:24:58,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20116 Valid, 8883 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:24:59,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813846 states.