/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 23:03:25,598 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 23:03:25,668 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 23:03:25,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 23:03:25,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 23:03:25,694 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 23:03:25,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 23:03:25,695 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 23:03:25,695 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 23:03:25,698 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 23:03:25,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 23:03:25,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 23:03:25,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 23:03:25,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 23:03:25,700 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 23:03:25,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 23:03:25,700 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 23:03:25,700 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 23:03:25,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 23:03:25,701 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 23:03:25,701 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 23:03:25,701 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 23:03:25,701 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 23:03:25,701 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 23:03:25,701 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 23:03:25,702 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 23:03:25,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 23:03:25,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 23:03:25,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 23:03:25,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 23:03:25,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 23:03:25,703 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 23:03:25,703 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 23:03:25,703 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 23:03:25,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 23:03:25,704 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 23:03:25,704 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 23:03:25,704 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 23:03:25,704 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 23:03:25,704 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 23:03:25,704 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 23:03:25,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 23:03:25,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 23:03:25,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 23:03:25,926 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 23:03:25,927 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 23:03:25,928 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c [2023-12-25 23:03:26,925 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 23:03:27,146 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 23:03:27,146 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c [2023-12-25 23:03:27,158 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/636dadfb0/188f1dd542a4452c802ed4df4a05fa7e/FLAG2351487c7 [2023-12-25 23:03:27,172 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/636dadfb0/188f1dd542a4452c802ed4df4a05fa7e [2023-12-25 23:03:27,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 23:03:27,175 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 23:03:27,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 23:03:27,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 23:03:27,180 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 23:03:27,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 11:03:27" (1/1) ... [2023-12-25 23:03:27,182 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@676da487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:03:27, skipping insertion in model container [2023-12-25 23:03:27,182 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 11:03:27" (1/1) ... [2023-12-25 23:03:27,221 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 23:03:27,324 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c[1259,1272] [2023-12-25 23:03:27,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 23:03:27,474 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 23:03:27,482 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p1.c[1259,1272] [2023-12-25 23:03:27,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 23:03:27,585 INFO L206 MainTranslator]: Completed translation [2023-12-25 23:03:27,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:03:27 WrapperNode [2023-12-25 23:03:27,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 23:03:27,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 23:03:27,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 23:03:27,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 23:03:27,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:03:27" (1/1) ... [2023-12-25 23:03:27,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:03:27" (1/1) ... [2023-12-25 23:03:27,784 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2436 [2023-12-25 23:03:27,784 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 23:03:27,784 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 23:03:27,785 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 23:03:27,785 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 23:03:27,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:03:27" (1/1) ... [2023-12-25 23:03:27,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:03:27" (1/1) ... [2023-12-25 23:03:27,825 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:03:27" (1/1) ... [2023-12-25 23:03:27,873 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]. [2023-12-25 23:03:27,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:03:27" (1/1) ... [2023-12-25 23:03:27,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:03:27" (1/1) ... [2023-12-25 23:03:27,985 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:03:27" (1/1) ... [2023-12-25 23:03:28,004 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:03:27" (1/1) ... [2023-12-25 23:03:28,019 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:03:27" (1/1) ... [2023-12-25 23:03:28,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:03:27" (1/1) ... [2023-12-25 23:03:28,056 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 23:03:28,057 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 23:03:28,057 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 23:03:28,057 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 23:03:28,058 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:03:27" (1/1) ... [2023-12-25 23:03:28,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 23:03:28,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:03:28,093 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) [2023-12-25 23:03:28,112 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 [2023-12-25 23:03:28,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 23:03:28,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 23:03:28,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 23:03:28,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 23:03:28,331 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 23:03:28,333 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 23:03:29,478 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 23:03:29,511 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 23:03:29,512 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 23:03:29,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 11:03:29 BoogieIcfgContainer [2023-12-25 23:03:29,512 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 23:03:29,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 23:03:29,513 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 23:03:29,515 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 23:03:29,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 11:03:27" (1/3) ... [2023-12-25 23:03:29,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b6b7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 11:03:29, skipping insertion in model container [2023-12-25 23:03:29,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:03:27" (2/3) ... [2023-12-25 23:03:29,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b6b7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 11:03:29, skipping insertion in model container [2023-12-25 23:03:29,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 11:03:29" (3/3) ... [2023-12-25 23:03:29,517 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_s1269b_p1.c [2023-12-25 23:03:29,528 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 23:03:29,528 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 23:03:29,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 23:03:29,564 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;@1e5d0093, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 23:03:29,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 23:03:29,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 487 states, 485 states have (on average 1.6680412371134021) internal successors, (809), 486 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:29,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-25 23:03:29,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:29,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:29,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:29,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:29,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1685076078, now seen corresponding path program 1 times [2023-12-25 23:03:29,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:29,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742130339] [2023-12-25 23:03:29,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:29,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:30,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:30,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:30,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742130339] [2023-12-25 23:03:30,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742130339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:30,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:30,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:03:30,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682248859] [2023-12-25 23:03:30,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:30,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:03:30,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:30,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:03:30,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:03:30,052 INFO L87 Difference]: Start difference. First operand has 487 states, 485 states have (on average 1.6680412371134021) internal successors, (809), 486 states have internal predecessors, (809), 0 states have call successors, (0), 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 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:30,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:30,166 INFO L93 Difference]: Finished difference Result 934 states and 1554 transitions. [2023-12-25 23:03:30,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 23:03:30,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2023-12-25 23:03:30,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:30,178 INFO L225 Difference]: With dead ends: 934 [2023-12-25 23:03:30,178 INFO L226 Difference]: Without dead ends: 487 [2023-12-25 23:03:30,181 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 [2023-12-25 23:03:30,183 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 1 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:30,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2401 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:03:30,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-12-25 23:03:30,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 487. [2023-12-25 23:03:30,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 1.6604938271604939) internal successors, (807), 486 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 807 transitions. [2023-12-25 23:03:30,224 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 807 transitions. Word has length 50 [2023-12-25 23:03:30,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:30,225 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 807 transitions. [2023-12-25 23:03:30,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:30,225 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 807 transitions. [2023-12-25 23:03:30,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-25 23:03:30,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:30,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:30,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 23:03:30,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:30,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:30,227 INFO L85 PathProgramCache]: Analyzing trace with hash -696025642, now seen corresponding path program 1 times [2023-12-25 23:03:30,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:30,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453572034] [2023-12-25 23:03:30,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:30,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:30,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:30,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453572034] [2023-12-25 23:03:30,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453572034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:30,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:30,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:03:30,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028986601] [2023-12-25 23:03:30,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:30,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:03:30,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:30,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:03:30,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:03:30,361 INFO L87 Difference]: Start difference. First operand 487 states and 807 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:30,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:30,398 INFO L93 Difference]: Finished difference Result 937 states and 1552 transitions. [2023-12-25 23:03:30,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 23:03:30,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-25 23:03:30,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:30,401 INFO L225 Difference]: With dead ends: 937 [2023-12-25 23:03:30,402 INFO L226 Difference]: Without dead ends: 490 [2023-12-25 23:03:30,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:03:30,405 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 1 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:30,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2399 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:03:30,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-25 23:03:30,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 489. [2023-12-25 23:03:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.6577868852459017) internal successors, (809), 488 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 809 transitions. [2023-12-25 23:03:30,428 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 809 transitions. Word has length 51 [2023-12-25 23:03:30,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:30,428 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 809 transitions. [2023-12-25 23:03:30,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:30,428 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 809 transitions. [2023-12-25 23:03:30,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-25 23:03:30,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:30,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:30,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 23:03:30,430 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:30,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:30,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1462616750, now seen corresponding path program 1 times [2023-12-25 23:03:30,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:30,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468538322] [2023-12-25 23:03:30,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:30,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:30,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:30,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468538322] [2023-12-25 23:03:30,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468538322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:30,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:30,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 23:03:30,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237631944] [2023-12-25 23:03:30,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:30,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 23:03:30,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:30,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 23:03:30,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-25 23:03:30,922 INFO L87 Difference]: Start difference. First operand 489 states and 809 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:31,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:31,191 INFO L93 Difference]: Finished difference Result 1839 states and 3042 transitions. [2023-12-25 23:03:31,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:03:31,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-25 23:03:31,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:31,195 INFO L225 Difference]: With dead ends: 1839 [2023-12-25 23:03:31,196 INFO L226 Difference]: Without dead ends: 1390 [2023-12-25 23:03:31,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-25 23:03:31,200 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 6539 mSDsluCounter, 4797 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6539 SdHoareTripleChecker+Valid, 5613 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:31,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6539 Valid, 5613 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:03:31,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2023-12-25 23:03:31,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 512. [2023-12-25 23:03:31,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.649706457925636) internal successors, (843), 511 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:31,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 843 transitions. [2023-12-25 23:03:31,214 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 843 transitions. Word has length 52 [2023-12-25 23:03:31,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:31,216 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 843 transitions. [2023-12-25 23:03:31,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:31,217 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 843 transitions. [2023-12-25 23:03:31,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-25 23:03:31,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:31,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:31,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 23:03:31,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:31,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:31,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2014227266, now seen corresponding path program 1 times [2023-12-25 23:03:31,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:31,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069878077] [2023-12-25 23:03:31,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:31,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:31,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:31,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:31,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069878077] [2023-12-25 23:03:31,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069878077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:31,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:31,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 23:03:31,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701182089] [2023-12-25 23:03:31,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:31,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 23:03:31,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:31,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 23:03:31,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-25 23:03:31,550 INFO L87 Difference]: Start difference. First operand 512 states and 843 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:31,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:31,796 INFO L93 Difference]: Finished difference Result 2303 states and 3807 transitions. [2023-12-25 23:03:31,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 23:03:31,796 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-25 23:03:31,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:31,802 INFO L225 Difference]: With dead ends: 2303 [2023-12-25 23:03:31,802 INFO L226 Difference]: Without dead ends: 1854 [2023-12-25 23:03:31,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-12-25 23:03:31,807 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 9521 mSDsluCounter, 4890 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9521 SdHoareTripleChecker+Valid, 5719 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:31,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9521 Valid, 5719 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:03:31,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2023-12-25 23:03:31,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 520. [2023-12-25 23:03:31,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 1.6454720616570329) internal successors, (854), 519 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:31,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 854 transitions. [2023-12-25 23:03:31,821 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 854 transitions. Word has length 53 [2023-12-25 23:03:31,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:31,822 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 854 transitions. [2023-12-25 23:03:31,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:31,822 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 854 transitions. [2023-12-25 23:03:31,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-25 23:03:31,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:31,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:31,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 23:03:31,824 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:31,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:31,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1664833120, now seen corresponding path program 1 times [2023-12-25 23:03:31,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:31,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595459659] [2023-12-25 23:03:31,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:31,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:31,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:31,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:31,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595459659] [2023-12-25 23:03:31,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595459659] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:31,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:31,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:03:31,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956749492] [2023-12-25 23:03:31,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:31,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:03:31,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:31,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:03:31,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:03:31,991 INFO L87 Difference]: Start difference. First operand 520 states and 854 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:32,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:32,165 INFO L93 Difference]: Finished difference Result 1866 states and 3071 transitions. [2023-12-25 23:03:32,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:03:32,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-25 23:03:32,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:32,170 INFO L225 Difference]: With dead ends: 1866 [2023-12-25 23:03:32,170 INFO L226 Difference]: Without dead ends: 1401 [2023-12-25 23:03:32,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:03:32,171 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 5859 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5859 SdHoareTripleChecker+Valid, 4025 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:32,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5859 Valid, 4025 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:03:32,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2023-12-25 23:03:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 522. [2023-12-25 23:03:32,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 521 states have (on average 1.6410748560460653) internal successors, (855), 521 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:32,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 855 transitions. [2023-12-25 23:03:32,196 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 855 transitions. Word has length 54 [2023-12-25 23:03:32,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:32,196 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 855 transitions. [2023-12-25 23:03:32,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:32,196 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 855 transitions. [2023-12-25 23:03:32,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-25 23:03:32,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:32,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:32,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-25 23:03:32,213 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:32,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:32,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2039145694, now seen corresponding path program 1 times [2023-12-25 23:03:32,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:32,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630795287] [2023-12-25 23:03:32,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:32,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:32,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:32,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630795287] [2023-12-25 23:03:32,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630795287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:32,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:32,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:03:32,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608809584] [2023-12-25 23:03:32,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:32,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:03:32,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:32,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:03:32,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:03:32,322 INFO L87 Difference]: Start difference. First operand 522 states and 855 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:32,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:32,395 INFO L93 Difference]: Finished difference Result 1406 states and 2315 transitions. [2023-12-25 23:03:32,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:03:32,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-25 23:03:32,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:32,398 INFO L225 Difference]: With dead ends: 1406 [2023-12-25 23:03:32,398 INFO L226 Difference]: Without dead ends: 940 [2023-12-25 23:03:32,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:03:32,399 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 2950 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2950 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:32,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2950 Valid, 2408 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:03:32,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2023-12-25 23:03:32,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 512. [2023-12-25 23:03:32,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.643835616438356) internal successors, (840), 511 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:32,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 840 transitions. [2023-12-25 23:03:32,410 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 840 transitions. Word has length 55 [2023-12-25 23:03:32,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:32,410 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 840 transitions. [2023-12-25 23:03:32,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:32,410 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 840 transitions. [2023-12-25 23:03:32,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-12-25 23:03:32,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:32,413 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:32,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-25 23:03:32,413 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:32,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:32,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2116102422, now seen corresponding path program 1 times [2023-12-25 23:03:32,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:32,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167200588] [2023-12-25 23:03:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:32,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:34,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:34,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167200588] [2023-12-25 23:03:34,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167200588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:34,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:34,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:03:34,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470564767] [2023-12-25 23:03:34,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:34,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:03:34,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:34,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:03:34,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:03:34,569 INFO L87 Difference]: Start difference. First operand 512 states and 840 transitions. Second operand has 7 states, 7 states have (on average 49.714285714285715) internal successors, (348), 6 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:34,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:34,701 INFO L93 Difference]: Finished difference Result 1865 states and 3075 transitions. [2023-12-25 23:03:34,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:03:34,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.714285714285715) internal successors, (348), 6 states have internal predecessors, (348), 0 states have call successors, (0), 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 348 [2023-12-25 23:03:34,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:34,706 INFO L225 Difference]: With dead ends: 1865 [2023-12-25 23:03:34,706 INFO L226 Difference]: Without dead ends: 1416 [2023-12-25 23:03:34,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:03:34,707 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 5846 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5846 SdHoareTripleChecker+Valid, 3992 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:34,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5846 Valid, 3992 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:03:34,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2023-12-25 23:03:34,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 527. [2023-12-25 23:03:34,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.6349809885931559) internal successors, (860), 526 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:34,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 860 transitions. [2023-12-25 23:03:34,718 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 860 transitions. Word has length 348 [2023-12-25 23:03:34,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:34,718 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 860 transitions. [2023-12-25 23:03:34,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.714285714285715) internal successors, (348), 6 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:34,719 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 860 transitions. [2023-12-25 23:03:34,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-25 23:03:34,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:34,722 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:34,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-25 23:03:34,723 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:34,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:34,723 INFO L85 PathProgramCache]: Analyzing trace with hash -833806632, now seen corresponding path program 1 times [2023-12-25 23:03:34,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:34,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278860180] [2023-12-25 23:03:34,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:34,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:36,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:36,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278860180] [2023-12-25 23:03:36,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278860180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:36,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:36,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:03:36,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151222827] [2023-12-25 23:03:36,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:36,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:03:36,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:36,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:03:36,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:03:36,454 INFO L87 Difference]: Start difference. First operand 527 states and 860 transitions. Second operand has 7 states, 7 states have (on average 49.857142857142854) internal successors, (349), 6 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:36,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:36,581 INFO L93 Difference]: Finished difference Result 1916 states and 3158 transitions. [2023-12-25 23:03:36,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:03:36,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 49.857142857142854) internal successors, (349), 6 states have internal predecessors, (349), 0 states have call successors, (0), 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 349 [2023-12-25 23:03:36,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:36,585 INFO L225 Difference]: With dead ends: 1916 [2023-12-25 23:03:36,585 INFO L226 Difference]: Without dead ends: 1467 [2023-12-25 23:03:36,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:03:36,589 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 5837 mSDsluCounter, 3240 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5837 SdHoareTripleChecker+Valid, 4158 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:36,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5837 Valid, 4158 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:03:36,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2023-12-25 23:03:36,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 572. [2023-12-25 23:03:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 1.6339754816112084) internal successors, (933), 571 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 933 transitions. [2023-12-25 23:03:36,603 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 933 transitions. Word has length 349 [2023-12-25 23:03:36,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:36,604 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 933 transitions. [2023-12-25 23:03:36,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.857142857142854) internal successors, (349), 6 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:36,605 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 933 transitions. [2023-12-25 23:03:36,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-12-25 23:03:36,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:36,608 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:36,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-25 23:03:36,609 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:36,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:36,609 INFO L85 PathProgramCache]: Analyzing trace with hash -175723074, now seen corresponding path program 1 times [2023-12-25 23:03:36,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:36,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638796359] [2023-12-25 23:03:36,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:36,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:38,243 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:38,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:38,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638796359] [2023-12-25 23:03:38,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638796359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:38,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:38,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 23:03:38,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263316562] [2023-12-25 23:03:38,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:38,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 23:03:38,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:38,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 23:03:38,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-25 23:03:38,246 INFO L87 Difference]: Start difference. First operand 572 states and 933 transitions. Second operand has 9 states, 9 states have (on average 38.888888888888886) internal successors, (350), 8 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:38,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:38,550 INFO L93 Difference]: Finished difference Result 2377 states and 3912 transitions. [2023-12-25 23:03:38,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 23:03:38,551 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 38.888888888888886) internal successors, (350), 8 states have internal predecessors, (350), 0 states have call successors, (0), 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 350 [2023-12-25 23:03:38,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:38,556 INFO L225 Difference]: With dead ends: 2377 [2023-12-25 23:03:38,556 INFO L226 Difference]: Without dead ends: 1893 [2023-12-25 23:03:38,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-25 23:03:38,558 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 9444 mSDsluCounter, 4867 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9444 SdHoareTripleChecker+Valid, 5723 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:38,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9444 Valid, 5723 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:03:38,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2023-12-25 23:03:38,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 577. [2023-12-25 23:03:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 1.6284722222222223) internal successors, (938), 576 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:38,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 938 transitions. [2023-12-25 23:03:38,572 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 938 transitions. Word has length 350 [2023-12-25 23:03:38,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:38,572 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 938 transitions. [2023-12-25 23:03:38,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 38.888888888888886) internal successors, (350), 8 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:38,573 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 938 transitions. [2023-12-25 23:03:38,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-25 23:03:38,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:38,575 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:38,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-25 23:03:38,575 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:38,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:38,576 INFO L85 PathProgramCache]: Analyzing trace with hash -874151788, now seen corresponding path program 1 times [2023-12-25 23:03:38,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:38,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096040237] [2023-12-25 23:03:38,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:38,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:40,002 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:40,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:40,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096040237] [2023-12-25 23:03:40,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096040237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:40,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:40,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:03:40,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441263606] [2023-12-25 23:03:40,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:40,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:03:40,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:40,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:03:40,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:03:40,005 INFO L87 Difference]: Start difference. First operand 577 states and 938 transitions. Second operand has 7 states, 7 states have (on average 50.142857142857146) internal successors, (351), 7 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:40,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:40,123 INFO L93 Difference]: Finished difference Result 2118 states and 3477 transitions. [2023-12-25 23:03:40,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 23:03:40,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 50.142857142857146) internal successors, (351), 7 states have internal predecessors, (351), 0 states have call successors, (0), 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 351 [2023-12-25 23:03:40,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:40,128 INFO L225 Difference]: With dead ends: 2118 [2023-12-25 23:03:40,128 INFO L226 Difference]: Without dead ends: 1666 [2023-12-25 23:03:40,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-25 23:03:40,129 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 2299 mSDsluCounter, 4343 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2299 SdHoareTripleChecker+Valid, 5259 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:40,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2299 Valid, 5259 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:03:40,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2023-12-25 23:03:40,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 649. [2023-12-25 23:03:40,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 648 states have (on average 1.6203703703703705) internal successors, (1050), 648 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:40,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1050 transitions. [2023-12-25 23:03:40,142 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1050 transitions. Word has length 351 [2023-12-25 23:03:40,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:40,142 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 1050 transitions. [2023-12-25 23:03:40,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 50.142857142857146) internal successors, (351), 7 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:40,143 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1050 transitions. [2023-12-25 23:03:40,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-25 23:03:40,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:40,145 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:40,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-25 23:03:40,146 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:40,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:40,146 INFO L85 PathProgramCache]: Analyzing trace with hash -241541586, now seen corresponding path program 1 times [2023-12-25 23:03:40,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:40,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130225681] [2023-12-25 23:03:40,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:40,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:41,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:41,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130225681] [2023-12-25 23:03:41,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130225681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:41,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:41,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:03:41,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365727295] [2023-12-25 23:03:41,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:41,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:03:41,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:41,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:03:41,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:03:41,530 INFO L87 Difference]: Start difference. First operand 649 states and 1050 transitions. Second operand has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:41,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:41,611 INFO L93 Difference]: Finished difference Result 2132 states and 3493 transitions. [2023-12-25 23:03:41,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 23:03:41,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 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 351 [2023-12-25 23:03:41,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:41,616 INFO L225 Difference]: With dead ends: 2132 [2023-12-25 23:03:41,616 INFO L226 Difference]: Without dead ends: 1636 [2023-12-25 23:03:41,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:03:41,617 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1439 mSDsluCounter, 4927 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 6543 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:41,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 6543 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:03:41,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2023-12-25 23:03:41,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 680. [2023-12-25 23:03:41,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 1.6126656848306333) internal successors, (1095), 679 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:41,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1095 transitions. [2023-12-25 23:03:41,632 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1095 transitions. Word has length 351 [2023-12-25 23:03:41,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:41,632 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 1095 transitions. [2023-12-25 23:03:41,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1095 transitions. [2023-12-25 23:03:41,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2023-12-25 23:03:41,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:41,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:41,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-25 23:03:41,636 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:41,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:41,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1872110196, now seen corresponding path program 1 times [2023-12-25 23:03:41,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:41,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055362013] [2023-12-25 23:03:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:41,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:42,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:42,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055362013] [2023-12-25 23:03:42,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055362013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:42,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:42,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:03:42,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214063428] [2023-12-25 23:03:42,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:42,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:03:42,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:42,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:03:42,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:03:42,157 INFO L87 Difference]: Start difference. First operand 680 states and 1095 transitions. Second operand has 5 states, 5 states have (on average 70.4) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:42,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:42,208 INFO L93 Difference]: Finished difference Result 1769 states and 2881 transitions. [2023-12-25 23:03:42,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:03:42,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 70.4) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 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 352 [2023-12-25 23:03:42,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:42,213 INFO L225 Difference]: With dead ends: 1769 [2023-12-25 23:03:42,213 INFO L226 Difference]: Without dead ends: 1250 [2023-12-25 23:03:42,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:03:42,214 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 3031 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3031 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:42,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3031 Valid, 2513 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:03:42,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2023-12-25 23:03:42,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 734. [2023-12-25 23:03:42,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 1.6084583901773533) internal successors, (1179), 733 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:42,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1179 transitions. [2023-12-25 23:03:42,225 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1179 transitions. Word has length 352 [2023-12-25 23:03:42,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:42,226 INFO L495 AbstractCegarLoop]: Abstraction has 734 states and 1179 transitions. [2023-12-25 23:03:42,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.4) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:42,226 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1179 transitions. [2023-12-25 23:03:42,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2023-12-25 23:03:42,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:42,229 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:42,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-25 23:03:42,229 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:42,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:42,229 INFO L85 PathProgramCache]: Analyzing trace with hash 535595354, now seen corresponding path program 1 times [2023-12-25 23:03:42,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:42,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726291752] [2023-12-25 23:03:42,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:42,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:43,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:43,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726291752] [2023-12-25 23:03:43,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726291752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:43,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:43,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:03:43,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524702864] [2023-12-25 23:03:43,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:43,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:03:43,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:43,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:03:43,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:03:43,514 INFO L87 Difference]: Start difference. First operand 734 states and 1179 transitions. Second operand has 8 states, 8 states have (on average 44.0) internal successors, (352), 7 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:43,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:43,684 INFO L93 Difference]: Finished difference Result 2374 states and 3873 transitions. [2023-12-25 23:03:43,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 23:03:43,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 44.0) internal successors, (352), 7 states have internal predecessors, (352), 0 states have call successors, (0), 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 352 [2023-12-25 23:03:43,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:43,690 INFO L225 Difference]: With dead ends: 2374 [2023-12-25 23:03:43,690 INFO L226 Difference]: Without dead ends: 1855 [2023-12-25 23:03:43,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-25 23:03:43,692 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 6546 mSDsluCounter, 4710 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6546 SdHoareTripleChecker+Valid, 5766 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:43,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6546 Valid, 5766 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:03:43,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2023-12-25 23:03:43,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 820. [2023-12-25 23:03:43,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 1.6092796092796093) internal successors, (1318), 819 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1318 transitions. [2023-12-25 23:03:43,709 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1318 transitions. Word has length 352 [2023-12-25 23:03:43,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:43,709 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 1318 transitions. [2023-12-25 23:03:43,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 44.0) internal successors, (352), 7 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1318 transitions. [2023-12-25 23:03:43,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-12-25 23:03:43,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:43,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:43,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-25 23:03:43,713 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:43,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:43,713 INFO L85 PathProgramCache]: Analyzing trace with hash 878204144, now seen corresponding path program 1 times [2023-12-25 23:03:43,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:43,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253358022] [2023-12-25 23:03:43,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:43,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:45,345 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:45,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:45,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253358022] [2023-12-25 23:03:45,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253358022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:45,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:45,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 23:03:45,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976967902] [2023-12-25 23:03:45,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:45,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:03:45,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:45,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:03:45,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:03:45,347 INFO L87 Difference]: Start difference. First operand 820 states and 1318 transitions. Second operand has 8 states, 8 states have (on average 44.125) internal successors, (353), 8 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:45,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:45,555 INFO L93 Difference]: Finished difference Result 2523 states and 4117 transitions. [2023-12-25 23:03:45,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 23:03:45,556 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 44.125) internal successors, (353), 8 states have internal predecessors, (353), 0 states have call successors, (0), 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 353 [2023-12-25 23:03:45,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:45,562 INFO L225 Difference]: With dead ends: 2523 [2023-12-25 23:03:45,562 INFO L226 Difference]: Without dead ends: 2004 [2023-12-25 23:03:45,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-12-25 23:03:45,563 INFO L413 NwaCegarLoop]: 1243 mSDtfsCounter, 3038 mSDsluCounter, 5693 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3038 SdHoareTripleChecker+Valid, 6936 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:45,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3038 Valid, 6936 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:03:45,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2023-12-25 23:03:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 884. [2023-12-25 23:03:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 883 states have (on average 1.6115515288788222) internal successors, (1423), 883 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1423 transitions. [2023-12-25 23:03:45,578 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1423 transitions. Word has length 353 [2023-12-25 23:03:45,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:45,579 INFO L495 AbstractCegarLoop]: Abstraction has 884 states and 1423 transitions. [2023-12-25 23:03:45,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 44.125) internal successors, (353), 8 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:45,579 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1423 transitions. [2023-12-25 23:03:45,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2023-12-25 23:03:45,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:45,581 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:45,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-25 23:03:45,582 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:45,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:45,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1759245309, now seen corresponding path program 1 times [2023-12-25 23:03:45,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:45,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424283557] [2023-12-25 23:03:45,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:45,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:47,211 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:47,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:47,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424283557] [2023-12-25 23:03:47,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424283557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:47,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:47,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 23:03:47,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640754338] [2023-12-25 23:03:47,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:47,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 23:03:47,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:47,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 23:03:47,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-25 23:03:47,213 INFO L87 Difference]: Start difference. First operand 884 states and 1423 transitions. Second operand has 9 states, 9 states have (on average 39.333333333333336) internal successors, (354), 9 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:47,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:47,416 INFO L93 Difference]: Finished difference Result 2772 states and 4520 transitions. [2023-12-25 23:03:47,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 23:03:47,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 39.333333333333336) internal successors, (354), 9 states have internal predecessors, (354), 0 states have call successors, (0), 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 354 [2023-12-25 23:03:47,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:47,422 INFO L225 Difference]: With dead ends: 2772 [2023-12-25 23:03:47,422 INFO L226 Difference]: Without dead ends: 2189 [2023-12-25 23:03:47,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-12-25 23:03:47,423 INFO L413 NwaCegarLoop]: 1247 mSDtfsCounter, 5155 mSDsluCounter, 4828 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5155 SdHoareTripleChecker+Valid, 6075 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:47,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5155 Valid, 6075 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:03:47,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2023-12-25 23:03:47,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 952. [2023-12-25 23:03:47,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 951 states have (on average 1.61198738170347) internal successors, (1533), 951 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1533 transitions. [2023-12-25 23:03:47,439 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1533 transitions. Word has length 354 [2023-12-25 23:03:47,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:47,439 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 1533 transitions. [2023-12-25 23:03:47,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 39.333333333333336) internal successors, (354), 9 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:47,439 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1533 transitions. [2023-12-25 23:03:47,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2023-12-25 23:03:47,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:47,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:47,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-25 23:03:47,441 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:47,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:47,442 INFO L85 PathProgramCache]: Analyzing trace with hash 645450908, now seen corresponding path program 1 times [2023-12-25 23:03:47,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:47,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329700333] [2023-12-25 23:03:47,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:47,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:48,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:48,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329700333] [2023-12-25 23:03:48,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329700333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:48,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:48,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:03:48,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744574816] [2023-12-25 23:03:48,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:48,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:03:48,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:48,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:03:48,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:03:48,507 INFO L87 Difference]: Start difference. First operand 952 states and 1533 transitions. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:48,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:48,565 INFO L93 Difference]: Finished difference Result 2394 states and 3901 transitions. [2023-12-25 23:03:48,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 23:03:48,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 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 355 [2023-12-25 23:03:48,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:48,581 INFO L225 Difference]: With dead ends: 2394 [2023-12-25 23:03:48,581 INFO L226 Difference]: Without dead ends: 1743 [2023-12-25 23:03:48,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:03:48,583 INFO L413 NwaCegarLoop]: 1390 mSDtfsCounter, 1544 mSDsluCounter, 3098 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 4488 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:48,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 4488 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:03:48,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2023-12-25 23:03:48,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1023. [2023-12-25 23:03:48,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1022 states have (on average 1.614481409001957) internal successors, (1650), 1022 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:48,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1650 transitions. [2023-12-25 23:03:48,600 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1650 transitions. Word has length 355 [2023-12-25 23:03:48,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:48,601 INFO L495 AbstractCegarLoop]: Abstraction has 1023 states and 1650 transitions. [2023-12-25 23:03:48,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:48,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1650 transitions. [2023-12-25 23:03:48,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-12-25 23:03:48,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:48,603 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:48,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-25 23:03:48,603 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:48,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:48,604 INFO L85 PathProgramCache]: Analyzing trace with hash -377445479, now seen corresponding path program 1 times [2023-12-25 23:03:48,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:48,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646448721] [2023-12-25 23:03:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:48,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:49,703 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:49,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:49,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646448721] [2023-12-25 23:03:49,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646448721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:49,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:49,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:03:49,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888182263] [2023-12-25 23:03:49,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:49,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:03:49,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:49,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:03:49,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:03:49,705 INFO L87 Difference]: Start difference. First operand 1023 states and 1650 transitions. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:49,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:49,761 INFO L93 Difference]: Finished difference Result 2475 states and 4032 transitions. [2023-12-25 23:03:49,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 23:03:49,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 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 356 [2023-12-25 23:03:49,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:49,765 INFO L225 Difference]: With dead ends: 2475 [2023-12-25 23:03:49,765 INFO L226 Difference]: Without dead ends: 1753 [2023-12-25 23:03:49,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:03:49,766 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 1478 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 4582 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:49,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 4582 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:03:49,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2023-12-25 23:03:49,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1028. [2023-12-25 23:03:49,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1027 states have (on average 1.6134371957156768) internal successors, (1657), 1027 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1657 transitions. [2023-12-25 23:03:49,783 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1657 transitions. Word has length 356 [2023-12-25 23:03:49,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:49,783 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1657 transitions. [2023-12-25 23:03:49,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1657 transitions. [2023-12-25 23:03:49,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-12-25 23:03:49,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:49,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:49,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-25 23:03:49,786 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:49,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:49,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1298734087, now seen corresponding path program 1 times [2023-12-25 23:03:49,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:49,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366212777] [2023-12-25 23:03:49,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:49,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:51,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:51,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366212777] [2023-12-25 23:03:51,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366212777] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:03:51,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001534218] [2023-12-25 23:03:51,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:51,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:03:51,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:03:51,335 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) [2023-12-25 23:03:51,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 23:03:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:51,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 2089 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-25 23:03:52,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:03:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:53,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 23:03:53,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001534218] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:53,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 23:03:53,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 22 [2023-12-25 23:03:53,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788252254] [2023-12-25 23:03:53,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:53,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 23:03:53,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:53,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 23:03:53,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2023-12-25 23:03:53,236 INFO L87 Difference]: Start difference. First operand 1028 states and 1657 transitions. Second operand has 17 states, 17 states have (on average 21.0) internal successors, (357), 16 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:53,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:53,699 INFO L93 Difference]: Finished difference Result 4343 states and 7072 transitions. [2023-12-25 23:03:53,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 23:03:53,699 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 21.0) internal successors, (357), 16 states have internal predecessors, (357), 0 states have call successors, (0), 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 357 [2023-12-25 23:03:53,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:53,704 INFO L225 Difference]: With dead ends: 4343 [2023-12-25 23:03:53,704 INFO L226 Difference]: Without dead ends: 3616 [2023-12-25 23:03:53,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2023-12-25 23:03:53,707 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 6814 mSDsluCounter, 8065 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6814 SdHoareTripleChecker+Valid, 8841 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:53,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6814 Valid, 8841 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:03:53,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2023-12-25 23:03:53,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 1733. [2023-12-25 23:03:53,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 1.6021939953810624) internal successors, (2775), 1732 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:53,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2775 transitions. [2023-12-25 23:03:53,737 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2775 transitions. Word has length 357 [2023-12-25 23:03:53,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:53,738 INFO L495 AbstractCegarLoop]: Abstraction has 1733 states and 2775 transitions. [2023-12-25 23:03:53,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.0) internal successors, (357), 16 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2775 transitions. [2023-12-25 23:03:53,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-25 23:03:53,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:53,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:53,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-25 23:03:53,950 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,SelfDestructingSolverStorable17 [2023-12-25 23:03:53,950 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:53,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:53,951 INFO L85 PathProgramCache]: Analyzing trace with hash 2093862362, now seen corresponding path program 1 times [2023-12-25 23:03:53,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:53,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421624545] [2023-12-25 23:03:53,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:53,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:55,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:55,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421624545] [2023-12-25 23:03:55,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421624545] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:03:55,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786183531] [2023-12-25 23:03:55,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:55,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:03:55,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:03:55,009 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) [2023-12-25 23:03:55,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 23:03:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:55,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 2092 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-25 23:03:55,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:03:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:56,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 23:03:56,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786183531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:56,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 23:03:56,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 22 [2023-12-25 23:03:56,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665408355] [2023-12-25 23:03:56,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:56,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 23:03:56,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:56,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 23:03:56,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2023-12-25 23:03:56,062 INFO L87 Difference]: Start difference. First operand 1733 states and 2775 transitions. Second operand has 17 states, 17 states have (on average 21.058823529411764) internal successors, (358), 16 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:56,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:56,801 INFO L93 Difference]: Finished difference Result 7742 states and 12551 transitions. [2023-12-25 23:03:56,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 23:03:56,801 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 21.058823529411764) internal successors, (358), 16 states have internal predecessors, (358), 0 states have call successors, (0), 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 358 [2023-12-25 23:03:56,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:56,810 INFO L225 Difference]: With dead ends: 7742 [2023-12-25 23:03:56,810 INFO L226 Difference]: Without dead ends: 6412 [2023-12-25 23:03:56,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=244, Invalid=1238, Unknown=0, NotChecked=0, Total=1482 [2023-12-25 23:03:56,813 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 16231 mSDsluCounter, 10261 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16231 SdHoareTripleChecker+Valid, 11295 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:56,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16231 Valid, 11295 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 23:03:56,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6412 states. [2023-12-25 23:03:56,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6412 to 1828. [2023-12-25 23:03:56,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1827 states have (on average 1.5900383141762453) internal successors, (2905), 1827 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:56,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2905 transitions. [2023-12-25 23:03:56,862 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2905 transitions. Word has length 358 [2023-12-25 23:03:56,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:56,862 INFO L495 AbstractCegarLoop]: Abstraction has 1828 states and 2905 transitions. [2023-12-25 23:03:56,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.058823529411764) internal successors, (358), 16 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:56,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2905 transitions. [2023-12-25 23:03:56,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-25 23:03:56,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:56,866 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:56,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 23:03:57,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:03:57,076 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:57,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:57,076 INFO L85 PathProgramCache]: Analyzing trace with hash -799358559, now seen corresponding path program 1 times [2023-12-25 23:03:57,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:57,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018103785] [2023-12-25 23:03:57,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:57,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:58,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:58,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018103785] [2023-12-25 23:03:58,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018103785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:58,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:58,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:03:58,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134706494] [2023-12-25 23:03:58,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:58,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:03:58,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:58,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:03:58,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:03:58,119 INFO L87 Difference]: Start difference. First operand 1828 states and 2905 transitions. Second operand has 8 states, 8 states have (on average 44.75) internal successors, (358), 7 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:58,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:03:58,699 INFO L93 Difference]: Finished difference Result 5839 states and 9417 transitions. [2023-12-25 23:03:58,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 23:03:58,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 44.75) internal successors, (358), 7 states have internal predecessors, (358), 0 states have call successors, (0), 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 358 [2023-12-25 23:03:58,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:03:58,705 INFO L225 Difference]: With dead ends: 5839 [2023-12-25 23:03:58,705 INFO L226 Difference]: Without dead ends: 4643 [2023-12-25 23:03:58,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:03:58,707 INFO L413 NwaCegarLoop]: 2092 mSDtfsCounter, 3495 mSDsluCounter, 7362 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3495 SdHoareTripleChecker+Valid, 9454 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 23:03:58,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3495 Valid, 9454 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 23:03:58,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4643 states. [2023-12-25 23:03:58,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4643 to 2123. [2023-12-25 23:03:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2122 states have (on average 1.5763430725730443) internal successors, (3345), 2122 states have internal predecessors, (3345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3345 transitions. [2023-12-25 23:03:58,737 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3345 transitions. Word has length 358 [2023-12-25 23:03:58,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:03:58,737 INFO L495 AbstractCegarLoop]: Abstraction has 2123 states and 3345 transitions. [2023-12-25 23:03:58,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 44.75) internal successors, (358), 7 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:03:58,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3345 transitions. [2023-12-25 23:03:58,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-25 23:03:58,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:03:58,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:03:58,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-25 23:03:58,740 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:03:58,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:03:58,741 INFO L85 PathProgramCache]: Analyzing trace with hash 130363208, now seen corresponding path program 1 times [2023-12-25 23:03:58,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:03:58,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033040331] [2023-12-25 23:03:58,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:03:58,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:03:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:03:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:03:59,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:03:59,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033040331] [2023-12-25 23:03:59,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033040331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:03:59,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:03:59,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 23:03:59,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767104401] [2023-12-25 23:03:59,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:03:59,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 23:03:59,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:03:59,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 23:03:59,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-25 23:03:59,922 INFO L87 Difference]: Start difference. First operand 2123 states and 3345 transitions. Second operand has 9 states, 9 states have (on average 39.888888888888886) internal successors, (359), 8 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:00,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:00,160 INFO L93 Difference]: Finished difference Result 7318 states and 11712 transitions. [2023-12-25 23:04:00,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 23:04:00,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 39.888888888888886) internal successors, (359), 8 states have internal predecessors, (359), 0 states have call successors, (0), 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 359 [2023-12-25 23:04:00,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:00,167 INFO L225 Difference]: With dead ends: 7318 [2023-12-25 23:04:00,167 INFO L226 Difference]: Without dead ends: 5686 [2023-12-25 23:04:00,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-25 23:04:00,170 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 5850 mSDsluCounter, 5554 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5850 SdHoareTripleChecker+Valid, 7128 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:00,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5850 Valid, 7128 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:04:00,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2023-12-25 23:04:00,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 2135. [2023-12-25 23:04:00,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2135 states, 2134 states have (on average 1.5731021555763824) internal successors, (3357), 2134 states have internal predecessors, (3357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:00,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3357 transitions. [2023-12-25 23:04:00,209 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3357 transitions. Word has length 359 [2023-12-25 23:04:00,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:00,209 INFO L495 AbstractCegarLoop]: Abstraction has 2135 states and 3357 transitions. [2023-12-25 23:04:00,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 39.888888888888886) internal successors, (359), 8 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3357 transitions. [2023-12-25 23:04:00,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-25 23:04:00,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:00,213 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:00,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-25 23:04:00,213 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:00,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:00,213 INFO L85 PathProgramCache]: Analyzing trace with hash -345162782, now seen corresponding path program 1 times [2023-12-25 23:04:00,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:00,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272772119] [2023-12-25 23:04:00,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:00,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:00,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:00,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272772119] [2023-12-25 23:04:00,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272772119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:00,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:00,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:04:00,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735681756] [2023-12-25 23:04:00,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:00,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:04:00,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:00,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:04:00,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:04:00,666 INFO L87 Difference]: Start difference. First operand 2135 states and 3357 transitions. Second operand has 5 states, 5 states have (on average 71.8) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:00,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:00,720 INFO L93 Difference]: Finished difference Result 4716 states and 7526 transitions. [2023-12-25 23:04:00,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:04:00,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 71.8) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 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 359 [2023-12-25 23:04:00,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:00,724 INFO L225 Difference]: With dead ends: 4716 [2023-12-25 23:04:00,724 INFO L226 Difference]: Without dead ends: 3026 [2023-12-25 23:04:00,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:04:00,729 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 2993 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2993 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:00,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2993 Valid, 2470 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:04:00,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2023-12-25 23:04:00,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2125. [2023-12-25 23:04:00,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2125 states, 2124 states have (on average 1.5682674199623352) internal successors, (3331), 2124 states have internal predecessors, (3331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:00,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2125 states to 2125 states and 3331 transitions. [2023-12-25 23:04:00,751 INFO L78 Accepts]: Start accepts. Automaton has 2125 states and 3331 transitions. Word has length 359 [2023-12-25 23:04:00,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:00,751 INFO L495 AbstractCegarLoop]: Abstraction has 2125 states and 3331 transitions. [2023-12-25 23:04:00,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.8) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:00,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2125 states and 3331 transitions. [2023-12-25 23:04:00,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-25 23:04:00,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:00,755 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:00,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-25 23:04:00,755 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:00,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:00,755 INFO L85 PathProgramCache]: Analyzing trace with hash -2059105796, now seen corresponding path program 1 times [2023-12-25 23:04:00,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:00,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498187603] [2023-12-25 23:04:00,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:00,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:01,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:01,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498187603] [2023-12-25 23:04:01,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498187603] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:04:01,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442239579] [2023-12-25 23:04:01,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:01,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:04:01,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:04:01,799 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) [2023-12-25 23:04:01,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 23:04:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:02,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 2095 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-25 23:04:02,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:04:03,108 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:03,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 23:04:03,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442239579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:03,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 23:04:03,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 22 [2023-12-25 23:04:03,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507590964] [2023-12-25 23:04:03,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:03,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 23:04:03,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:03,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 23:04:03,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2023-12-25 23:04:03,110 INFO L87 Difference]: Start difference. First operand 2125 states and 3331 transitions. Second operand has 17 states, 17 states have (on average 21.11764705882353) internal successors, (359), 16 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:03,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:03,794 INFO L93 Difference]: Finished difference Result 6425 states and 10331 transitions. [2023-12-25 23:04:03,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 23:04:03,794 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 21.11764705882353) internal successors, (359), 16 states have internal predecessors, (359), 0 states have call successors, (0), 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 359 [2023-12-25 23:04:03,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:03,817 INFO L225 Difference]: With dead ends: 6425 [2023-12-25 23:04:03,817 INFO L226 Difference]: Without dead ends: 5132 [2023-12-25 23:04:03,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=258, Invalid=1224, Unknown=0, NotChecked=0, Total=1482 [2023-12-25 23:04:03,821 INFO L413 NwaCegarLoop]: 1305 mSDtfsCounter, 9466 mSDsluCounter, 12947 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9466 SdHoareTripleChecker+Valid, 14252 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:03,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9466 Valid, 14252 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 23:04:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5132 states. [2023-12-25 23:04:03,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5132 to 2345. [2023-12-25 23:04:03,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 2344 states have (on average 1.5601535836177474) internal successors, (3657), 2344 states have internal predecessors, (3657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 3657 transitions. [2023-12-25 23:04:03,879 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 3657 transitions. Word has length 359 [2023-12-25 23:04:03,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:03,879 INFO L495 AbstractCegarLoop]: Abstraction has 2345 states and 3657 transitions. [2023-12-25 23:04:03,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.11764705882353) internal successors, (359), 16 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:03,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 3657 transitions. [2023-12-25 23:04:03,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-25 23:04:03,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:03,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:03,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-25 23:04:04,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:04:04,093 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:04,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:04,093 INFO L85 PathProgramCache]: Analyzing trace with hash 109099414, now seen corresponding path program 1 times [2023-12-25 23:04:04,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:04,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385339050] [2023-12-25 23:04:04,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:04,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:05,101 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:05,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:05,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385339050] [2023-12-25 23:04:05,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385339050] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:04:05,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493438849] [2023-12-25 23:04:05,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:05,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:04:05,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:04:05,104 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) [2023-12-25 23:04:05,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 23:04:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:05,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 2095 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-25 23:04:05,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:04:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:06,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 23:04:06,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493438849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:06,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 23:04:06,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2023-12-25 23:04:06,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050795954] [2023-12-25 23:04:06,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:06,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 23:04:06,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:06,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 23:04:06,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-25 23:04:06,261 INFO L87 Difference]: Start difference. First operand 2345 states and 3657 transitions. Second operand has 9 states, 9 states have (on average 39.888888888888886) internal successors, (359), 8 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:06,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:06,437 INFO L93 Difference]: Finished difference Result 4769 states and 7614 transitions. [2023-12-25 23:04:06,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 23:04:06,448 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 39.888888888888886) internal successors, (359), 8 states have internal predecessors, (359), 0 states have call successors, (0), 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 359 [2023-12-25 23:04:06,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:06,452 INFO L225 Difference]: With dead ends: 4769 [2023-12-25 23:04:06,452 INFO L226 Difference]: Without dead ends: 3595 [2023-12-25 23:04:06,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2023-12-25 23:04:06,454 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 3757 mSDsluCounter, 4262 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 5345 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:06,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 5345 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:04:06,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2023-12-25 23:04:06,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 2425. [2023-12-25 23:04:06,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 2424 states have (on average 1.561881188118812) internal successors, (3786), 2424 states have internal predecessors, (3786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 3786 transitions. [2023-12-25 23:04:06,480 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 3786 transitions. Word has length 359 [2023-12-25 23:04:06,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:06,480 INFO L495 AbstractCegarLoop]: Abstraction has 2425 states and 3786 transitions. [2023-12-25 23:04:06,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 39.888888888888886) internal successors, (359), 8 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 3786 transitions. [2023-12-25 23:04:06,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-12-25 23:04:06,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:06,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:06,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-25 23:04:06,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:04:06,693 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:06,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:06,693 INFO L85 PathProgramCache]: Analyzing trace with hash 878458154, now seen corresponding path program 1 times [2023-12-25 23:04:06,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:06,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072071541] [2023-12-25 23:04:06,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:06,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:07,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:07,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072071541] [2023-12-25 23:04:07,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072071541] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:04:07,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953014970] [2023-12-25 23:04:07,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:07,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:04:07,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:04:07,866 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) [2023-12-25 23:04:07,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-25 23:04:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:08,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 2098 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-25 23:04:08,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:04:09,790 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:09,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 23:04:09,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953014970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:09,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 23:04:09,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [7] total 21 [2023-12-25 23:04:09,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740526715] [2023-12-25 23:04:09,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:09,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 23:04:09,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:09,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 23:04:09,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2023-12-25 23:04:09,792 INFO L87 Difference]: Start difference. First operand 2425 states and 3786 transitions. Second operand has 16 states, 16 states have (on average 22.5) internal successors, (360), 15 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:10,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:10,209 INFO L93 Difference]: Finished difference Result 5292 states and 8476 transitions. [2023-12-25 23:04:10,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 23:04:10,209 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 22.5) internal successors, (360), 15 states have internal predecessors, (360), 0 states have call successors, (0), 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 360 [2023-12-25 23:04:10,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:10,213 INFO L225 Difference]: With dead ends: 5292 [2023-12-25 23:04:10,213 INFO L226 Difference]: Without dead ends: 4118 [2023-12-25 23:04:10,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2023-12-25 23:04:10,215 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 5359 mSDsluCounter, 8919 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5359 SdHoareTripleChecker+Valid, 9871 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:10,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5359 Valid, 9871 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:04:10,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2023-12-25 23:04:10,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 2749. [2023-12-25 23:04:10,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 2748 states have (on average 1.566957787481805) internal successors, (4306), 2748 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 4306 transitions. [2023-12-25 23:04:10,250 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 4306 transitions. Word has length 360 [2023-12-25 23:04:10,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:10,250 INFO L495 AbstractCegarLoop]: Abstraction has 2749 states and 4306 transitions. [2023-12-25 23:04:10,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 22.5) internal successors, (360), 15 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:10,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 4306 transitions. [2023-12-25 23:04:10,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-12-25 23:04:10,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:10,254 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:10,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-25 23:04:10,465 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,SelfDestructingSolverStorable24 [2023-12-25 23:04:10,465 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:10,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:10,465 INFO L85 PathProgramCache]: Analyzing trace with hash -508133326, now seen corresponding path program 1 times [2023-12-25 23:04:10,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:10,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524232106] [2023-12-25 23:04:10,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:10,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:11,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:11,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524232106] [2023-12-25 23:04:11,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524232106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:11,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:11,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:04:11,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692955891] [2023-12-25 23:04:11,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:11,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:04:11,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:11,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:04:11,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:04:11,525 INFO L87 Difference]: Start difference. First operand 2749 states and 4306 transitions. Second operand has 8 states, 8 states have (on average 45.0) internal successors, (360), 7 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:11,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:11,667 INFO L93 Difference]: Finished difference Result 5774 states and 9222 transitions. [2023-12-25 23:04:11,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:04:11,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 45.0) internal successors, (360), 7 states have internal predecessors, (360), 0 states have call successors, (0), 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 360 [2023-12-25 23:04:11,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:11,673 INFO L225 Difference]: With dead ends: 5774 [2023-12-25 23:04:11,673 INFO L226 Difference]: Without dead ends: 4276 [2023-12-25 23:04:11,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-12-25 23:04:11,675 INFO L413 NwaCegarLoop]: 1128 mSDtfsCounter, 2835 mSDsluCounter, 4323 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2835 SdHoareTripleChecker+Valid, 5451 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:11,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2835 Valid, 5451 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:04:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2023-12-25 23:04:11,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 2767. [2023-12-25 23:04:11,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2767 states, 2766 states have (on average 1.5654374548083876) internal successors, (4330), 2766 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:11,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 4330 transitions. [2023-12-25 23:04:11,702 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 4330 transitions. Word has length 360 [2023-12-25 23:04:11,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:11,703 INFO L495 AbstractCegarLoop]: Abstraction has 2767 states and 4330 transitions. [2023-12-25 23:04:11,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 45.0) internal successors, (360), 7 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:11,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 4330 transitions. [2023-12-25 23:04:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-12-25 23:04:11,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:11,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:11,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-25 23:04:11,707 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:11,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:11,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1138274039, now seen corresponding path program 1 times [2023-12-25 23:04:11,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:11,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850525883] [2023-12-25 23:04:11,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:11,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:12,642 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:12,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:12,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850525883] [2023-12-25 23:04:12,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850525883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:12,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:12,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:04:12,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631882227] [2023-12-25 23:04:12,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:12,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:04:12,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:12,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:04:12,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:04:12,644 INFO L87 Difference]: Start difference. First operand 2767 states and 4330 transitions. Second operand has 8 states, 8 states have (on average 45.0) internal successors, (360), 7 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:12,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:12,993 INFO L93 Difference]: Finished difference Result 7942 states and 12699 transitions. [2023-12-25 23:04:12,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 23:04:12,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 45.0) internal successors, (360), 7 states have internal predecessors, (360), 0 states have call successors, (0), 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 360 [2023-12-25 23:04:12,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:12,998 INFO L225 Difference]: With dead ends: 7942 [2023-12-25 23:04:12,998 INFO L226 Difference]: Without dead ends: 4226 [2023-12-25 23:04:13,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-12-25 23:04:13,001 INFO L413 NwaCegarLoop]: 1444 mSDtfsCounter, 5218 mSDsluCounter, 6723 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5218 SdHoareTripleChecker+Valid, 8167 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:13,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5218 Valid, 8167 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:04:13,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2023-12-25 23:04:13,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 2385. [2023-12-25 23:04:13,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2385 states, 2384 states have (on average 1.5780201342281879) internal successors, (3762), 2384 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:13,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2385 states to 2385 states and 3762 transitions. [2023-12-25 23:04:13,036 INFO L78 Accepts]: Start accepts. Automaton has 2385 states and 3762 transitions. Word has length 360 [2023-12-25 23:04:13,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:13,036 INFO L495 AbstractCegarLoop]: Abstraction has 2385 states and 3762 transitions. [2023-12-25 23:04:13,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 45.0) internal successors, (360), 7 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:13,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states and 3762 transitions. [2023-12-25 23:04:13,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-12-25 23:04:13,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:13,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:13,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-25 23:04:13,040 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:13,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:13,040 INFO L85 PathProgramCache]: Analyzing trace with hash -640465643, now seen corresponding path program 1 times [2023-12-25 23:04:13,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:13,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710177785] [2023-12-25 23:04:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:13,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:14,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:14,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710177785] [2023-12-25 23:04:14,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710177785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:14,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:14,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:04:14,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539254343] [2023-12-25 23:04:14,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:14,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:04:14,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:14,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:04:14,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:04:14,227 INFO L87 Difference]: Start difference. First operand 2385 states and 3762 transitions. Second operand has 8 states, 8 states have (on average 45.0) internal successors, (360), 7 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:14,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:14,365 INFO L93 Difference]: Finished difference Result 5419 states and 8685 transitions. [2023-12-25 23:04:14,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:04:14,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 45.0) internal successors, (360), 7 states have internal predecessors, (360), 0 states have call successors, (0), 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 360 [2023-12-25 23:04:14,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:14,369 INFO L225 Difference]: With dead ends: 5419 [2023-12-25 23:04:14,369 INFO L226 Difference]: Without dead ends: 3903 [2023-12-25 23:04:14,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-25 23:04:14,384 INFO L413 NwaCegarLoop]: 1372 mSDtfsCounter, 2342 mSDsluCounter, 5797 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 7169 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:14,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2342 Valid, 7169 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:04:14,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3903 states. [2023-12-25 23:04:14,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3903 to 2388. [2023-12-25 23:04:14,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2388 states, 2387 states have (on average 1.5777126099706744) internal successors, (3766), 2387 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:14,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3766 transitions. [2023-12-25 23:04:14,411 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3766 transitions. Word has length 360 [2023-12-25 23:04:14,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:14,411 INFO L495 AbstractCegarLoop]: Abstraction has 2388 states and 3766 transitions. [2023-12-25 23:04:14,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 45.0) internal successors, (360), 7 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:14,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3766 transitions. [2023-12-25 23:04:14,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-12-25 23:04:14,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:14,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:14,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-25 23:04:14,416 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:14,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:14,416 INFO L85 PathProgramCache]: Analyzing trace with hash 246757203, now seen corresponding path program 1 times [2023-12-25 23:04:14,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:14,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426884689] [2023-12-25 23:04:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:14,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:15,304 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:15,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:15,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426884689] [2023-12-25 23:04:15,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426884689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:15,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:15,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:04:15,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605189574] [2023-12-25 23:04:15,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:15,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:04:15,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:15,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:04:15,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:04:15,305 INFO L87 Difference]: Start difference. First operand 2388 states and 3766 transitions. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:15,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:15,345 INFO L93 Difference]: Finished difference Result 5430 states and 8698 transitions. [2023-12-25 23:04:15,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:04:15,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 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 360 [2023-12-25 23:04:15,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:15,348 INFO L225 Difference]: With dead ends: 5430 [2023-12-25 23:04:15,349 INFO L226 Difference]: Without dead ends: 3911 [2023-12-25 23:04:15,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:04:15,350 INFO L413 NwaCegarLoop]: 1386 mSDtfsCounter, 736 mSDsluCounter, 2179 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:15,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 3565 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:04:15,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3911 states. [2023-12-25 23:04:15,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3911 to 2394. [2023-12-25 23:04:15,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2394 states, 2393 states have (on average 1.576681989134977) internal successors, (3773), 2393 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2394 states to 2394 states and 3773 transitions. [2023-12-25 23:04:15,375 INFO L78 Accepts]: Start accepts. Automaton has 2394 states and 3773 transitions. Word has length 360 [2023-12-25 23:04:15,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:15,375 INFO L495 AbstractCegarLoop]: Abstraction has 2394 states and 3773 transitions. [2023-12-25 23:04:15,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:15,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2394 states and 3773 transitions. [2023-12-25 23:04:15,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-12-25 23:04:15,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:15,378 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:15,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-25 23:04:15,378 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:15,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:15,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1293038939, now seen corresponding path program 1 times [2023-12-25 23:04:15,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:15,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86591574] [2023-12-25 23:04:15,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:15,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:15,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:15,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86591574] [2023-12-25 23:04:15,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86591574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:15,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:15,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:04:15,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59836529] [2023-12-25 23:04:15,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:15,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:04:15,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:15,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:04:15,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:04:15,794 INFO L87 Difference]: Start difference. First operand 2394 states and 3773 transitions. Second operand has 5 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:15,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:15,840 INFO L93 Difference]: Finished difference Result 5355 states and 8561 transitions. [2023-12-25 23:04:15,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 23:04:15,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 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 360 [2023-12-25 23:04:15,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:15,843 INFO L225 Difference]: With dead ends: 5355 [2023-12-25 23:04:15,843 INFO L226 Difference]: Without dead ends: 3830 [2023-12-25 23:04:15,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:04:15,845 INFO L413 NwaCegarLoop]: 1266 mSDtfsCounter, 1471 mSDsluCounter, 2864 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 4130 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:15,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1471 Valid, 4130 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:04:15,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3830 states. [2023-12-25 23:04:15,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3830 to 2408. [2023-12-25 23:04:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 2407 states have (on average 1.5749896136269215) internal successors, (3791), 2407 states have internal predecessors, (3791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 3791 transitions. [2023-12-25 23:04:15,868 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 3791 transitions. Word has length 360 [2023-12-25 23:04:15,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:15,868 INFO L495 AbstractCegarLoop]: Abstraction has 2408 states and 3791 transitions. [2023-12-25 23:04:15,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 3791 transitions. [2023-12-25 23:04:15,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-25 23:04:15,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:15,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:15,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-25 23:04:15,872 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:15,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:15,872 INFO L85 PathProgramCache]: Analyzing trace with hash 74271860, now seen corresponding path program 1 times [2023-12-25 23:04:15,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:15,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968167934] [2023-12-25 23:04:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:15,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:16,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:16,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968167934] [2023-12-25 23:04:16,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968167934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:16,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:16,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:04:16,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635861747] [2023-12-25 23:04:16,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:16,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:04:16,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:16,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:04:16,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:04:16,904 INFO L87 Difference]: Start difference. First operand 2408 states and 3791 transitions. Second operand has 8 states, 8 states have (on average 45.125) internal successors, (361), 7 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:17,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:17,066 INFO L93 Difference]: Finished difference Result 5478 states and 8758 transitions. [2023-12-25 23:04:17,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:04:17,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 45.125) internal successors, (361), 7 states have internal predecessors, (361), 0 states have call successors, (0), 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 361 [2023-12-25 23:04:17,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:17,070 INFO L225 Difference]: With dead ends: 5478 [2023-12-25 23:04:17,070 INFO L226 Difference]: Without dead ends: 3939 [2023-12-25 23:04:17,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:04:17,072 INFO L413 NwaCegarLoop]: 1371 mSDtfsCounter, 2390 mSDsluCounter, 5795 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 7166 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:17,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2390 Valid, 7166 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:04:17,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2023-12-25 23:04:17,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 2409. [2023-12-25 23:04:17,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2408 states have (on average 1.5747508305647842) internal successors, (3792), 2408 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:17,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 3792 transitions. [2023-12-25 23:04:17,095 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 3792 transitions. Word has length 361 [2023-12-25 23:04:17,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:17,096 INFO L495 AbstractCegarLoop]: Abstraction has 2409 states and 3792 transitions. [2023-12-25 23:04:17,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 45.125) internal successors, (361), 7 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:17,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 3792 transitions. [2023-12-25 23:04:17,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-25 23:04:17,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:17,099 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:17,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-25 23:04:17,099 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:17,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:17,099 INFO L85 PathProgramCache]: Analyzing trace with hash 151172658, now seen corresponding path program 1 times [2023-12-25 23:04:17,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:17,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982285134] [2023-12-25 23:04:17,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:17,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:18,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:18,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982285134] [2023-12-25 23:04:18,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982285134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:18,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:18,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 23:04:18,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55482314] [2023-12-25 23:04:18,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:18,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 23:04:18,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:18,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 23:04:18,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-25 23:04:18,393 INFO L87 Difference]: Start difference. First operand 2409 states and 3792 transitions. Second operand has 9 states, 9 states have (on average 40.111111111111114) internal successors, (361), 8 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:18,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:18,638 INFO L93 Difference]: Finished difference Result 8292 states and 13252 transitions. [2023-12-25 23:04:18,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 23:04:18,639 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 40.111111111111114) internal successors, (361), 8 states have internal predecessors, (361), 0 states have call successors, (0), 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 361 [2023-12-25 23:04:18,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:18,645 INFO L225 Difference]: With dead ends: 8292 [2023-12-25 23:04:18,645 INFO L226 Difference]: Without dead ends: 6472 [2023-12-25 23:04:18,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-12-25 23:04:18,648 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 5606 mSDsluCounter, 5747 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5606 SdHoareTripleChecker+Valid, 7299 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:18,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5606 Valid, 7299 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:04:18,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6472 states. [2023-12-25 23:04:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6472 to 2415. [2023-12-25 23:04:18,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2414 states have (on average 1.5733222866611434) internal successors, (3798), 2414 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 3798 transitions. [2023-12-25 23:04:18,681 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 3798 transitions. Word has length 361 [2023-12-25 23:04:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:18,681 INFO L495 AbstractCegarLoop]: Abstraction has 2415 states and 3798 transitions. [2023-12-25 23:04:18,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 40.111111111111114) internal successors, (361), 8 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:18,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 3798 transitions. [2023-12-25 23:04:18,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-25 23:04:18,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:18,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:18,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-25 23:04:18,684 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:18,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:18,685 INFO L85 PathProgramCache]: Analyzing trace with hash 539919974, now seen corresponding path program 1 times [2023-12-25 23:04:18,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:18,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714226176] [2023-12-25 23:04:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:18,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:19,541 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:19,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:19,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714226176] [2023-12-25 23:04:19,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714226176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:19,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:19,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:04:19,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864581425] [2023-12-25 23:04:19,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:19,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:04:19,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:19,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:04:19,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:04:19,543 INFO L87 Difference]: Start difference. First operand 2415 states and 3798 transitions. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:19,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:19,598 INFO L93 Difference]: Finished difference Result 5479 states and 8738 transitions. [2023-12-25 23:04:19,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:04:19,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 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 361 [2023-12-25 23:04:19,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:19,601 INFO L225 Difference]: With dead ends: 5479 [2023-12-25 23:04:19,601 INFO L226 Difference]: Without dead ends: 3560 [2023-12-25 23:04:19,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:04:19,603 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 2980 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2980 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:19,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2980 Valid, 2491 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:04:19,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2023-12-25 23:04:19,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 2325. [2023-12-25 23:04:19,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2325 states, 2324 states have (on average 1.5735800344234079) internal successors, (3657), 2324 states have internal predecessors, (3657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:19,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2325 states to 2325 states and 3657 transitions. [2023-12-25 23:04:19,625 INFO L78 Accepts]: Start accepts. Automaton has 2325 states and 3657 transitions. Word has length 361 [2023-12-25 23:04:19,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:19,626 INFO L495 AbstractCegarLoop]: Abstraction has 2325 states and 3657 transitions. [2023-12-25 23:04:19,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2325 states and 3657 transitions. [2023-12-25 23:04:19,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-12-25 23:04:19,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:19,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:19,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-25 23:04:19,629 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:19,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:19,629 INFO L85 PathProgramCache]: Analyzing trace with hash -276240580, now seen corresponding path program 1 times [2023-12-25 23:04:19,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:19,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923494094] [2023-12-25 23:04:19,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:19,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:21,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:21,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923494094] [2023-12-25 23:04:21,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923494094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:21,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:21,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:04:21,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139537906] [2023-12-25 23:04:21,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:21,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:04:21,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:21,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:04:21,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:04:21,198 INFO L87 Difference]: Start difference. First operand 2325 states and 3657 transitions. Second operand has 6 states, 6 states have (on average 60.333333333333336) internal successors, (362), 6 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:21,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:21,282 INFO L93 Difference]: Finished difference Result 5473 states and 8741 transitions. [2023-12-25 23:04:21,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 23:04:21,282 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 60.333333333333336) internal successors, (362), 6 states have internal predecessors, (362), 0 states have call successors, (0), 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 362 [2023-12-25 23:04:21,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:21,285 INFO L225 Difference]: With dead ends: 5473 [2023-12-25 23:04:21,285 INFO L226 Difference]: Without dead ends: 3933 [2023-12-25 23:04:21,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-25 23:04:21,287 INFO L413 NwaCegarLoop]: 1229 mSDtfsCounter, 2073 mSDsluCounter, 3572 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2073 SdHoareTripleChecker+Valid, 4801 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:21,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2073 Valid, 4801 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:04:21,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3933 states. [2023-12-25 23:04:21,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3933 to 2145. [2023-12-25 23:04:21,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 2144 states have (on average 1.568563432835821) internal successors, (3363), 2144 states have internal predecessors, (3363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:21,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3363 transitions. [2023-12-25 23:04:21,308 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3363 transitions. Word has length 362 [2023-12-25 23:04:21,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:21,308 INFO L495 AbstractCegarLoop]: Abstraction has 2145 states and 3363 transitions. [2023-12-25 23:04:21,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.333333333333336) internal successors, (362), 6 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:21,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3363 transitions. [2023-12-25 23:04:21,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-12-25 23:04:21,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:21,311 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:21,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-25 23:04:21,311 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:21,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:21,312 INFO L85 PathProgramCache]: Analyzing trace with hash -113131425, now seen corresponding path program 1 times [2023-12-25 23:04:21,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:21,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144102091] [2023-12-25 23:04:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:21,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:22,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:22,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144102091] [2023-12-25 23:04:22,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144102091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:22,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:22,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:04:22,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155699532] [2023-12-25 23:04:22,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:22,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:04:22,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:22,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:04:22,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:04:22,863 INFO L87 Difference]: Start difference. First operand 2145 states and 3363 transitions. Second operand has 7 states, 7 states have (on average 51.857142857142854) internal successors, (363), 7 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:23,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:23,018 INFO L93 Difference]: Finished difference Result 9368 states and 15007 transitions. [2023-12-25 23:04:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 23:04:23,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 51.857142857142854) internal successors, (363), 7 states have internal predecessors, (363), 0 states have call successors, (0), 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 363 [2023-12-25 23:04:23,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:23,025 INFO L225 Difference]: With dead ends: 9368 [2023-12-25 23:04:23,025 INFO L226 Difference]: Without dead ends: 8008 [2023-12-25 23:04:23,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-25 23:04:23,028 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 2929 mSDsluCounter, 7372 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2929 SdHoareTripleChecker+Valid, 9071 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:23,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2929 Valid, 9071 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:04:23,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8008 states. [2023-12-25 23:04:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8008 to 3271. [2023-12-25 23:04:23,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3271 states, 3270 states have (on average 1.5813455657492355) internal successors, (5171), 3270 states have internal predecessors, (5171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:23,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3271 states to 3271 states and 5171 transitions. [2023-12-25 23:04:23,066 INFO L78 Accepts]: Start accepts. Automaton has 3271 states and 5171 transitions. Word has length 363 [2023-12-25 23:04:23,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:23,066 INFO L495 AbstractCegarLoop]: Abstraction has 3271 states and 5171 transitions. [2023-12-25 23:04:23,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 51.857142857142854) internal successors, (363), 7 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:23,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3271 states and 5171 transitions. [2023-12-25 23:04:23,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-12-25 23:04:23,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:23,070 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:23,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-25 23:04:23,070 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:23,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:23,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1816527891, now seen corresponding path program 1 times [2023-12-25 23:04:23,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:23,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695640589] [2023-12-25 23:04:23,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:23,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:24,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:24,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695640589] [2023-12-25 23:04:24,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695640589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:24,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:24,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 23:04:24,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43977811] [2023-12-25 23:04:24,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:24,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 23:04:24,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:24,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 23:04:24,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 23:04:24,470 INFO L87 Difference]: Start difference. First operand 3271 states and 5171 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:24,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:24,489 INFO L93 Difference]: Finished difference Result 6226 states and 9887 transitions. [2023-12-25 23:04:24,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 23:04:24,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2023-12-25 23:04:24,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:24,492 INFO L225 Difference]: With dead ends: 6226 [2023-12-25 23:04:24,492 INFO L226 Difference]: Without dead ends: 3257 [2023-12-25 23:04:24,494 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 [2023-12-25 23:04:24,494 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 737 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:24,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1014 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:04:24,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3257 states. [2023-12-25 23:04:24,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3257 to 3178. [2023-12-25 23:04:24,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3178 states, 3177 states have (on average 1.5854579792256847) internal successors, (5037), 3177 states have internal predecessors, (5037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:24,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 5037 transitions. [2023-12-25 23:04:24,519 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 5037 transitions. Word has length 364 [2023-12-25 23:04:24,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:24,519 INFO L495 AbstractCegarLoop]: Abstraction has 3178 states and 5037 transitions. [2023-12-25 23:04:24,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:24,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 5037 transitions. [2023-12-25 23:04:24,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-25 23:04:24,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:24,523 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:24,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-25 23:04:24,523 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:24,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:24,524 INFO L85 PathProgramCache]: Analyzing trace with hash -778096226, now seen corresponding path program 1 times [2023-12-25 23:04:24,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:24,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700252802] [2023-12-25 23:04:24,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:24,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:26,261 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:26,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:26,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700252802] [2023-12-25 23:04:26,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700252802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:26,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:26,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-25 23:04:26,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614070795] [2023-12-25 23:04:26,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:26,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 23:04:26,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:26,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 23:04:26,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 23:04:26,263 INFO L87 Difference]: Start difference. First operand 3178 states and 5037 transitions. Second operand has 11 states, 11 states have (on average 33.18181818181818) internal successors, (365), 11 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:26,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:26,804 INFO L93 Difference]: Finished difference Result 9628 states and 15429 transitions. [2023-12-25 23:04:26,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 23:04:26,804 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 33.18181818181818) internal successors, (365), 11 states have internal predecessors, (365), 0 states have call successors, (0), 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 365 [2023-12-25 23:04:26,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:26,810 INFO L225 Difference]: With dead ends: 9628 [2023-12-25 23:04:26,810 INFO L226 Difference]: Without dead ends: 7349 [2023-12-25 23:04:26,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=193, Invalid=407, Unknown=0, NotChecked=0, Total=600 [2023-12-25 23:04:26,813 INFO L413 NwaCegarLoop]: 1812 mSDtfsCounter, 6520 mSDsluCounter, 8972 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6520 SdHoareTripleChecker+Valid, 10784 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:26,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6520 Valid, 10784 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:04:26,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7349 states. [2023-12-25 23:04:26,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7349 to 3520. [2023-12-25 23:04:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3520 states, 3519 states have (on average 1.5876669508383063) internal successors, (5587), 3519 states have internal predecessors, (5587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:26,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 5587 transitions. [2023-12-25 23:04:26,850 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 5587 transitions. Word has length 365 [2023-12-25 23:04:26,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:26,851 INFO L495 AbstractCegarLoop]: Abstraction has 3520 states and 5587 transitions. [2023-12-25 23:04:26,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.18181818181818) internal successors, (365), 11 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:26,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 5587 transitions. [2023-12-25 23:04:26,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-25 23:04:26,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:26,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:26,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-25 23:04:26,855 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:26,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:26,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1758392816, now seen corresponding path program 1 times [2023-12-25 23:04:26,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:26,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182409997] [2023-12-25 23:04:26,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:26,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:28,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:28,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182409997] [2023-12-25 23:04:28,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182409997] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:28,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:28,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-25 23:04:28,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469145968] [2023-12-25 23:04:28,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:28,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-25 23:04:28,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:28,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-25 23:04:28,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-25 23:04:28,762 INFO L87 Difference]: Start difference. First operand 3520 states and 5587 transitions. Second operand has 15 states, 15 states have (on average 24.333333333333332) internal successors, (365), 14 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:29,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:29,283 INFO L93 Difference]: Finished difference Result 12660 states and 20165 transitions. [2023-12-25 23:04:29,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 23:04:29,284 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 24.333333333333332) internal successors, (365), 14 states have internal predecessors, (365), 0 states have call successors, (0), 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 365 [2023-12-25 23:04:29,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:29,291 INFO L225 Difference]: With dead ends: 12660 [2023-12-25 23:04:29,291 INFO L226 Difference]: Without dead ends: 9417 [2023-12-25 23:04:29,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2023-12-25 23:04:29,296 INFO L413 NwaCegarLoop]: 1837 mSDtfsCounter, 8458 mSDsluCounter, 13730 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8458 SdHoareTripleChecker+Valid, 15567 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:29,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8458 Valid, 15567 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:04:29,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9417 states. [2023-12-25 23:04:29,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9417 to 3798. [2023-12-25 23:04:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3798 states, 3797 states have (on average 1.5767711351066631) internal successors, (5987), 3797 states have internal predecessors, (5987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:29,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3798 states to 3798 states and 5987 transitions. [2023-12-25 23:04:29,347 INFO L78 Accepts]: Start accepts. Automaton has 3798 states and 5987 transitions. Word has length 365 [2023-12-25 23:04:29,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:29,347 INFO L495 AbstractCegarLoop]: Abstraction has 3798 states and 5987 transitions. [2023-12-25 23:04:29,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 24.333333333333332) internal successors, (365), 14 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:29,347 INFO L276 IsEmpty]: Start isEmpty. Operand 3798 states and 5987 transitions. [2023-12-25 23:04:29,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-25 23:04:29,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:29,368 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:29,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-25 23:04:29,368 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:29,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:29,369 INFO L85 PathProgramCache]: Analyzing trace with hash -251879310, now seen corresponding path program 1 times [2023-12-25 23:04:29,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:29,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420248168] [2023-12-25 23:04:29,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:29,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:31,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:31,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420248168] [2023-12-25 23:04:31,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420248168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:31,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:31,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:04:31,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315791111] [2023-12-25 23:04:31,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:31,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:04:31,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:31,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:04:31,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:04:31,160 INFO L87 Difference]: Start difference. First operand 3798 states and 5987 transitions. Second operand has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:31,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:31,235 INFO L93 Difference]: Finished difference Result 8812 states and 14063 transitions. [2023-12-25 23:04:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:04:31,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 365 [2023-12-25 23:04:31,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:31,241 INFO L225 Difference]: With dead ends: 8812 [2023-12-25 23:04:31,241 INFO L226 Difference]: Without dead ends: 6390 [2023-12-25 23:04:31,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:04:31,244 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 2190 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2190 SdHoareTripleChecker+Valid, 3433 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:31,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2190 Valid, 3433 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:04:31,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6390 states. [2023-12-25 23:04:31,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6390 to 3814. [2023-12-25 23:04:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3814 states, 3813 states have (on average 1.5743509047993707) internal successors, (6003), 3813 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3814 states to 3814 states and 6003 transitions. [2023-12-25 23:04:31,283 INFO L78 Accepts]: Start accepts. Automaton has 3814 states and 6003 transitions. Word has length 365 [2023-12-25 23:04:31,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:31,283 INFO L495 AbstractCegarLoop]: Abstraction has 3814 states and 6003 transitions. [2023-12-25 23:04:31,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:31,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3814 states and 6003 transitions. [2023-12-25 23:04:31,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-25 23:04:31,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:31,287 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:31,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-25 23:04:31,287 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:31,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:31,288 INFO L85 PathProgramCache]: Analyzing trace with hash 646371945, now seen corresponding path program 1 times [2023-12-25 23:04:31,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:31,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362264789] [2023-12-25 23:04:31,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:31,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:32,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:32,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362264789] [2023-12-25 23:04:32,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362264789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:32,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:32,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:04:32,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932821955] [2023-12-25 23:04:32,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:32,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:04:32,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:32,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:04:32,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:04:32,458 INFO L87 Difference]: Start difference. First operand 3814 states and 6003 transitions. Second operand has 7 states, 7 states have (on average 52.285714285714285) internal successors, (366), 7 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:32,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:32,657 INFO L93 Difference]: Finished difference Result 13470 states and 21539 transitions. [2023-12-25 23:04:32,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 23:04:32,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 52.285714285714285) internal successors, (366), 7 states have internal predecessors, (366), 0 states have call successors, (0), 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 366 [2023-12-25 23:04:32,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:32,666 INFO L225 Difference]: With dead ends: 13470 [2023-12-25 23:04:32,666 INFO L226 Difference]: Without dead ends: 11032 [2023-12-25 23:04:32,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-12-25 23:04:32,671 INFO L413 NwaCegarLoop]: 1883 mSDtfsCounter, 2977 mSDsluCounter, 6477 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2977 SdHoareTripleChecker+Valid, 8360 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:32,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2977 Valid, 8360 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:04:32,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11032 states. [2023-12-25 23:04:32,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11032 to 3918. [2023-12-25 23:04:32,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3918 states, 3917 states have (on average 1.5733980086801123) internal successors, (6163), 3917 states have internal predecessors, (6163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:32,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3918 states to 3918 states and 6163 transitions. [2023-12-25 23:04:32,742 INFO L78 Accepts]: Start accepts. Automaton has 3918 states and 6163 transitions. Word has length 366 [2023-12-25 23:04:32,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:32,742 INFO L495 AbstractCegarLoop]: Abstraction has 3918 states and 6163 transitions. [2023-12-25 23:04:32,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.285714285714285) internal successors, (366), 7 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:32,743 INFO L276 IsEmpty]: Start isEmpty. Operand 3918 states and 6163 transitions. [2023-12-25 23:04:32,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-25 23:04:32,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:32,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:32,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-25 23:04:32,747 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:32,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:32,747 INFO L85 PathProgramCache]: Analyzing trace with hash -836272679, now seen corresponding path program 1 times [2023-12-25 23:04:32,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:32,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275531315] [2023-12-25 23:04:32,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:32,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:33,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:33,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275531315] [2023-12-25 23:04:33,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275531315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:33,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:33,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:04:33,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144135249] [2023-12-25 23:04:33,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:33,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:04:33,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:33,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:04:33,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:04:33,214 INFO L87 Difference]: Start difference. First operand 3918 states and 6163 transitions. Second operand has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:33,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:33,281 INFO L93 Difference]: Finished difference Result 9030 states and 14359 transitions. [2023-12-25 23:04:33,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:04:33,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 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 366 [2023-12-25 23:04:33,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:33,286 INFO L225 Difference]: With dead ends: 9030 [2023-12-25 23:04:33,286 INFO L226 Difference]: Without dead ends: 6488 [2023-12-25 23:04:33,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:04:33,293 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 734 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 3875 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:33,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 3875 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:04:33,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2023-12-25 23:04:33,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 3950. [2023-12-25 23:04:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3950 states, 3949 states have (on average 1.5687515826791594) internal successors, (6195), 3949 states have internal predecessors, (6195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:33,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3950 states to 3950 states and 6195 transitions. [2023-12-25 23:04:33,333 INFO L78 Accepts]: Start accepts. Automaton has 3950 states and 6195 transitions. Word has length 366 [2023-12-25 23:04:33,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:33,333 INFO L495 AbstractCegarLoop]: Abstraction has 3950 states and 6195 transitions. [2023-12-25 23:04:33,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:33,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3950 states and 6195 transitions. [2023-12-25 23:04:33,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-25 23:04:33,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:33,353 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:33,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-25 23:04:33,353 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:33,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:33,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1294964715, now seen corresponding path program 1 times [2023-12-25 23:04:33,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:33,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414713028] [2023-12-25 23:04:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:33,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:35,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:35,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414713028] [2023-12-25 23:04:35,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414713028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:35,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:35,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-25 23:04:35,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845904469] [2023-12-25 23:04:35,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:35,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 23:04:35,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:35,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 23:04:35,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-25 23:04:35,715 INFO L87 Difference]: Start difference. First operand 3950 states and 6195 transitions. Second operand has 16 states, 16 states have (on average 22.875) internal successors, (366), 15 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:36,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:36,313 INFO L93 Difference]: Finished difference Result 15493 states and 24479 transitions. [2023-12-25 23:04:36,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 23:04:36,313 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 22.875) internal successors, (366), 15 states have internal predecessors, (366), 0 states have call successors, (0), 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 366 [2023-12-25 23:04:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:36,323 INFO L225 Difference]: With dead ends: 15493 [2023-12-25 23:04:36,324 INFO L226 Difference]: Without dead ends: 12166 [2023-12-25 23:04:36,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2023-12-25 23:04:36,329 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 10616 mSDsluCounter, 10737 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10616 SdHoareTripleChecker+Valid, 12239 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:36,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10616 Valid, 12239 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:04:36,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12166 states. [2023-12-25 23:04:36,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12166 to 4090. [2023-12-25 23:04:36,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4090 states, 4089 states have (on average 1.5646857422352654) internal successors, (6398), 4089 states have internal predecessors, (6398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 6398 transitions. [2023-12-25 23:04:36,386 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 6398 transitions. Word has length 366 [2023-12-25 23:04:36,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:36,387 INFO L495 AbstractCegarLoop]: Abstraction has 4090 states and 6398 transitions. [2023-12-25 23:04:36,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 22.875) internal successors, (366), 15 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:36,387 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 6398 transitions. [2023-12-25 23:04:36,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-25 23:04:36,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:36,391 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:36,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-25 23:04:36,391 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:36,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:36,392 INFO L85 PathProgramCache]: Analyzing trace with hash -431771153, now seen corresponding path program 1 times [2023-12-25 23:04:36,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:36,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917503720] [2023-12-25 23:04:36,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:36,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:37,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:37,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917503720] [2023-12-25 23:04:37,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917503720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:37,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:37,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:04:37,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608266699] [2023-12-25 23:04:37,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:37,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:04:37,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:37,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:04:37,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:04:37,886 INFO L87 Difference]: Start difference. First operand 4090 states and 6398 transitions. Second operand has 8 states, 8 states have (on average 45.875) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:38,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:38,046 INFO L93 Difference]: Finished difference Result 12722 states and 20150 transitions. [2023-12-25 23:04:38,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 23:04:38,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 45.875) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 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 367 [2023-12-25 23:04:38,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:38,054 INFO L225 Difference]: With dead ends: 12722 [2023-12-25 23:04:38,055 INFO L226 Difference]: Without dead ends: 10148 [2023-12-25 23:04:38,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:04:38,078 INFO L413 NwaCegarLoop]: 1853 mSDtfsCounter, 3806 mSDsluCounter, 5037 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3806 SdHoareTripleChecker+Valid, 6890 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:38,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3806 Valid, 6890 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:04:38,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10148 states. [2023-12-25 23:04:38,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10148 to 4118. [2023-12-25 23:04:38,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4118 states, 4117 states have (on average 1.5627884381831432) internal successors, (6434), 4117 states have internal predecessors, (6434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:38,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4118 states to 4118 states and 6434 transitions. [2023-12-25 23:04:38,124 INFO L78 Accepts]: Start accepts. Automaton has 4118 states and 6434 transitions. Word has length 367 [2023-12-25 23:04:38,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:38,124 INFO L495 AbstractCegarLoop]: Abstraction has 4118 states and 6434 transitions. [2023-12-25 23:04:38,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 45.875) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:38,124 INFO L276 IsEmpty]: Start isEmpty. Operand 4118 states and 6434 transitions. [2023-12-25 23:04:38,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-25 23:04:38,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:38,128 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:38,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-25 23:04:38,129 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:38,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:38,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1582074225, now seen corresponding path program 1 times [2023-12-25 23:04:38,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:38,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883039079] [2023-12-25 23:04:38,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:38,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:40,922 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:40,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:40,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883039079] [2023-12-25 23:04:40,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883039079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:40,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:40,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-25 23:04:40,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937002303] [2023-12-25 23:04:40,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:40,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-25 23:04:40,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:40,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-25 23:04:40,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-25 23:04:40,925 INFO L87 Difference]: Start difference. First operand 4118 states and 6434 transitions. Second operand has 19 states, 19 states have (on average 19.31578947368421) internal successors, (367), 18 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:43,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:43,172 INFO L93 Difference]: Finished difference Result 28640 states and 45216 transitions. [2023-12-25 23:04:43,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-25 23:04:43,172 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 19.31578947368421) internal successors, (367), 18 states have internal predecessors, (367), 0 states have call successors, (0), 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 367 [2023-12-25 23:04:43,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:43,199 INFO L225 Difference]: With dead ends: 28640 [2023-12-25 23:04:43,199 INFO L226 Difference]: Without dead ends: 26066 [2023-12-25 23:04:43,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=833, Invalid=2473, Unknown=0, NotChecked=0, Total=3306 [2023-12-25 23:04:43,213 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 27685 mSDsluCounter, 22433 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27685 SdHoareTripleChecker+Valid, 24181 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:43,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27685 Valid, 24181 Invalid, 623 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 23:04:43,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26066 states. [2023-12-25 23:04:43,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26066 to 4829. [2023-12-25 23:04:43,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4829 states, 4828 states have (on average 1.5524026512013256) internal successors, (7495), 4828 states have internal predecessors, (7495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4829 states to 4829 states and 7495 transitions. [2023-12-25 23:04:43,412 INFO L78 Accepts]: Start accepts. Automaton has 4829 states and 7495 transitions. Word has length 367 [2023-12-25 23:04:43,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:43,412 INFO L495 AbstractCegarLoop]: Abstraction has 4829 states and 7495 transitions. [2023-12-25 23:04:43,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 19.31578947368421) internal successors, (367), 18 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:43,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4829 states and 7495 transitions. [2023-12-25 23:04:43,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-25 23:04:43,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:43,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:43,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-25 23:04:43,417 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:43,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:43,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1168365125, now seen corresponding path program 1 times [2023-12-25 23:04:43,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:43,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344058134] [2023-12-25 23:04:43,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:43,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:45,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:45,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344058134] [2023-12-25 23:04:45,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344058134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:45,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:45,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 23:04:45,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944303615] [2023-12-25 23:04:45,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:45,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 23:04:45,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:45,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 23:04:45,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-25 23:04:45,140 INFO L87 Difference]: Start difference. First operand 4829 states and 7495 transitions. Second operand has 11 states, 11 states have (on average 33.36363636363637) internal successors, (367), 10 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:45,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:45,438 INFO L93 Difference]: Finished difference Result 11769 states and 18569 transitions. [2023-12-25 23:04:45,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 23:04:45,439 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 33.36363636363637) internal successors, (367), 10 states have internal predecessors, (367), 0 states have call successors, (0), 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 367 [2023-12-25 23:04:45,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:45,446 INFO L225 Difference]: With dead ends: 11769 [2023-12-25 23:04:45,446 INFO L226 Difference]: Without dead ends: 9189 [2023-12-25 23:04:45,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2023-12-25 23:04:45,449 INFO L413 NwaCegarLoop]: 2041 mSDtfsCounter, 4304 mSDsluCounter, 9010 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4304 SdHoareTripleChecker+Valid, 11051 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:45,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4304 Valid, 11051 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:04:45,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9189 states. [2023-12-25 23:04:45,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9189 to 4831. [2023-12-25 23:04:45,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4831 states, 4830 states have (on average 1.5521739130434782) internal successors, (7497), 4830 states have internal predecessors, (7497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:45,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4831 states to 4831 states and 7497 transitions. [2023-12-25 23:04:45,498 INFO L78 Accepts]: Start accepts. Automaton has 4831 states and 7497 transitions. Word has length 367 [2023-12-25 23:04:45,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:45,499 INFO L495 AbstractCegarLoop]: Abstraction has 4831 states and 7497 transitions. [2023-12-25 23:04:45,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.36363636363637) internal successors, (367), 10 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:45,499 INFO L276 IsEmpty]: Start isEmpty. Operand 4831 states and 7497 transitions. [2023-12-25 23:04:45,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-25 23:04:45,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:45,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:45,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-25 23:04:45,503 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:45,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:45,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1590034827, now seen corresponding path program 1 times [2023-12-25 23:04:45,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:45,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872711439] [2023-12-25 23:04:45,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:45,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:45,927 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:45,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:45,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872711439] [2023-12-25 23:04:45,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872711439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:45,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:45,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:04:45,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293704837] [2023-12-25 23:04:45,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:45,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:04:45,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:45,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:04:45,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:04:45,929 INFO L87 Difference]: Start difference. First operand 4831 states and 7497 transitions. Second operand has 5 states, 5 states have (on average 73.4) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:45,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:45,993 INFO L93 Difference]: Finished difference Result 10365 states and 16290 transitions. [2023-12-25 23:04:45,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:04:45,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.4) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 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 367 [2023-12-25 23:04:45,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:45,999 INFO L225 Difference]: With dead ends: 10365 [2023-12-25 23:04:45,999 INFO L226 Difference]: Without dead ends: 6915 [2023-12-25 23:04:46,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:04:46,002 INFO L413 NwaCegarLoop]: 955 mSDtfsCounter, 3014 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3014 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:46,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3014 Valid, 2539 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:04:46,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6915 states. [2023-12-25 23:04:46,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6915 to 4660. [2023-12-25 23:04:46,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4660 states, 4659 states have (on average 1.552693711096802) internal successors, (7234), 4659 states have internal predecessors, (7234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4660 states to 4660 states and 7234 transitions. [2023-12-25 23:04:46,042 INFO L78 Accepts]: Start accepts. Automaton has 4660 states and 7234 transitions. Word has length 367 [2023-12-25 23:04:46,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:46,042 INFO L495 AbstractCegarLoop]: Abstraction has 4660 states and 7234 transitions. [2023-12-25 23:04:46,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.4) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:46,042 INFO L276 IsEmpty]: Start isEmpty. Operand 4660 states and 7234 transitions. [2023-12-25 23:04:46,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-25 23:04:46,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:46,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:46,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-25 23:04:46,046 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:46,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:46,046 INFO L85 PathProgramCache]: Analyzing trace with hash 2097827675, now seen corresponding path program 1 times [2023-12-25 23:04:46,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:46,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154753917] [2023-12-25 23:04:46,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:46,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:47,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:47,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154753917] [2023-12-25 23:04:47,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154753917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:47,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:47,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-25 23:04:47,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89814569] [2023-12-25 23:04:47,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:47,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 23:04:47,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:47,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 23:04:47,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-25 23:04:47,921 INFO L87 Difference]: Start difference. First operand 4660 states and 7234 transitions. Second operand has 13 states, 13 states have (on average 28.23076923076923) internal successors, (367), 12 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:48,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:48,487 INFO L93 Difference]: Finished difference Result 14454 states and 22709 transitions. [2023-12-25 23:04:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 23:04:48,487 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 28.23076923076923) internal successors, (367), 12 states have internal predecessors, (367), 0 states have call successors, (0), 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 367 [2023-12-25 23:04:48,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:48,496 INFO L225 Difference]: With dead ends: 14454 [2023-12-25 23:04:48,496 INFO L226 Difference]: Without dead ends: 11178 [2023-12-25 23:04:48,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=562, Unknown=0, NotChecked=0, Total=756 [2023-12-25 23:04:48,500 INFO L413 NwaCegarLoop]: 1187 mSDtfsCounter, 11512 mSDsluCounter, 8895 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11512 SdHoareTripleChecker+Valid, 10082 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:48,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11512 Valid, 10082 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:04:48,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11178 states. [2023-12-25 23:04:48,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11178 to 4847. [2023-12-25 23:04:48,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4847 states, 4846 states have (on average 1.5491126702434999) internal successors, (7507), 4846 states have internal predecessors, (7507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4847 states to 4847 states and 7507 transitions. [2023-12-25 23:04:48,591 INFO L78 Accepts]: Start accepts. Automaton has 4847 states and 7507 transitions. Word has length 367 [2023-12-25 23:04:48,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:48,592 INFO L495 AbstractCegarLoop]: Abstraction has 4847 states and 7507 transitions. [2023-12-25 23:04:48,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 28.23076923076923) internal successors, (367), 12 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:48,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4847 states and 7507 transitions. [2023-12-25 23:04:48,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-25 23:04:48,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:48,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:48,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-12-25 23:04:48,616 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:48,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:48,617 INFO L85 PathProgramCache]: Analyzing trace with hash 758269204, now seen corresponding path program 1 times [2023-12-25 23:04:48,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:48,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881890939] [2023-12-25 23:04:48,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:48,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:51,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:51,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881890939] [2023-12-25 23:04:51,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881890939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:51,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:51,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-25 23:04:51,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637400465] [2023-12-25 23:04:51,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:51,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 23:04:51,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:51,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 23:04:51,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-12-25 23:04:51,216 INFO L87 Difference]: Start difference. First operand 4847 states and 7507 transitions. Second operand has 17 states, 17 states have (on average 21.58823529411765) internal successors, (367), 16 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:52,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:52,053 INFO L93 Difference]: Finished difference Result 17430 states and 27411 transitions. [2023-12-25 23:04:52,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 23:04:52,053 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 21.58823529411765) internal successors, (367), 16 states have internal predecessors, (367), 0 states have call successors, (0), 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 367 [2023-12-25 23:04:52,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:52,067 INFO L225 Difference]: With dead ends: 17430 [2023-12-25 23:04:52,067 INFO L226 Difference]: Without dead ends: 14743 [2023-12-25 23:04:52,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2023-12-25 23:04:52,073 INFO L413 NwaCegarLoop]: 2217 mSDtfsCounter, 8545 mSDsluCounter, 12261 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8545 SdHoareTripleChecker+Valid, 14478 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:52,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8545 Valid, 14478 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 23:04:52,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14743 states. [2023-12-25 23:04:52,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14743 to 5021. [2023-12-25 23:04:52,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 5020 states have (on average 1.547211155378486) internal successors, (7767), 5020 states have internal predecessors, (7767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 7767 transitions. [2023-12-25 23:04:52,143 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 7767 transitions. Word has length 367 [2023-12-25 23:04:52,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:52,143 INFO L495 AbstractCegarLoop]: Abstraction has 5021 states and 7767 transitions. [2023-12-25 23:04:52,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.58823529411765) internal successors, (367), 16 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:52,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 7767 transitions. [2023-12-25 23:04:52,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-25 23:04:52,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:52,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:52,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-25 23:04:52,147 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:52,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:52,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1654500374, now seen corresponding path program 1 times [2023-12-25 23:04:52,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:52,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162450355] [2023-12-25 23:04:52,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:52,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:54,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:54,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162450355] [2023-12-25 23:04:54,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162450355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:54,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:54,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-25 23:04:54,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453421873] [2023-12-25 23:04:54,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:54,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 23:04:54,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:54,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 23:04:54,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-12-25 23:04:54,393 INFO L87 Difference]: Start difference. First operand 5021 states and 7767 transitions. Second operand has 17 states, 17 states have (on average 21.58823529411765) internal successors, (367), 16 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:55,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:55,331 INFO L93 Difference]: Finished difference Result 16210 states and 25402 transitions. [2023-12-25 23:04:55,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-25 23:04:55,332 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 21.58823529411765) internal successors, (367), 16 states have internal predecessors, (367), 0 states have call successors, (0), 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 367 [2023-12-25 23:04:55,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:55,346 INFO L225 Difference]: With dead ends: 16210 [2023-12-25 23:04:55,346 INFO L226 Difference]: Without dead ends: 13298 [2023-12-25 23:04:55,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=345, Invalid=987, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 23:04:55,354 INFO L413 NwaCegarLoop]: 2316 mSDtfsCounter, 9644 mSDsluCounter, 18913 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9644 SdHoareTripleChecker+Valid, 21229 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:55,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9644 Valid, 21229 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 23:04:55,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13298 states. [2023-12-25 23:04:55,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13298 to 4963. [2023-12-25 23:04:55,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4963 states, 4962 states have (on average 1.5481660620717452) internal successors, (7682), 4962 states have internal predecessors, (7682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:55,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4963 states to 4963 states and 7682 transitions. [2023-12-25 23:04:55,439 INFO L78 Accepts]: Start accepts. Automaton has 4963 states and 7682 transitions. Word has length 367 [2023-12-25 23:04:55,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:55,439 INFO L495 AbstractCegarLoop]: Abstraction has 4963 states and 7682 transitions. [2023-12-25 23:04:55,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.58823529411765) internal successors, (367), 16 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:55,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4963 states and 7682 transitions. [2023-12-25 23:04:55,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-12-25 23:04:55,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:55,444 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:55,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-25 23:04:55,444 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:55,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:55,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2023663923, now seen corresponding path program 1 times [2023-12-25 23:04:55,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:55,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486586485] [2023-12-25 23:04:55,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:55,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:57,289 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:57,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:57,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486586485] [2023-12-25 23:04:57,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486586485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:57,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:57,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 23:04:57,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600997741] [2023-12-25 23:04:57,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:57,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 23:04:57,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:57,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 23:04:57,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-25 23:04:57,291 INFO L87 Difference]: Start difference. First operand 4963 states and 7682 transitions. Second operand has 11 states, 11 states have (on average 33.45454545454545) internal successors, (368), 10 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:57,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:57,623 INFO L93 Difference]: Finished difference Result 18301 states and 28515 transitions. [2023-12-25 23:04:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 23:04:57,623 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 33.45454545454545) internal successors, (368), 10 states have internal predecessors, (368), 0 states have call successors, (0), 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 368 [2023-12-25 23:04:57,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:57,636 INFO L225 Difference]: With dead ends: 18301 [2023-12-25 23:04:57,636 INFO L226 Difference]: Without dead ends: 14009 [2023-12-25 23:04:57,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2023-12-25 23:04:57,642 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 6343 mSDsluCounter, 8117 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6343 SdHoareTripleChecker+Valid, 9619 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:57,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6343 Valid, 9619 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:04:57,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14009 states. [2023-12-25 23:04:57,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14009 to 5159. [2023-12-25 23:04:57,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5159 states, 5158 states have (on average 1.5327646374563784) internal successors, (7906), 5158 states have internal predecessors, (7906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:57,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5159 states to 5159 states and 7906 transitions. [2023-12-25 23:04:57,716 INFO L78 Accepts]: Start accepts. Automaton has 5159 states and 7906 transitions. Word has length 368 [2023-12-25 23:04:57,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:57,716 INFO L495 AbstractCegarLoop]: Abstraction has 5159 states and 7906 transitions. [2023-12-25 23:04:57,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.45454545454545) internal successors, (368), 10 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:57,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5159 states and 7906 transitions. [2023-12-25 23:04:57,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-25 23:04:57,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:57,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:57,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-25 23:04:57,722 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:57,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:57,722 INFO L85 PathProgramCache]: Analyzing trace with hash -393475677, now seen corresponding path program 1 times [2023-12-25 23:04:57,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:57,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367346034] [2023-12-25 23:04:57,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:57,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:58,817 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:58,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:58,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367346034] [2023-12-25 23:04:58,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367346034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:58,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:58,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:04:58,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028517293] [2023-12-25 23:04:58,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:58,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:04:58,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:58,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:04:58,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:04:58,818 INFO L87 Difference]: Start difference. First operand 5159 states and 7906 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:58,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:04:58,887 INFO L93 Difference]: Finished difference Result 13943 states and 21564 transitions. [2023-12-25 23:04:58,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 23:04:58,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 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 369 [2023-12-25 23:04:58,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:04:58,895 INFO L225 Difference]: With dead ends: 13943 [2023-12-25 23:04:58,896 INFO L226 Difference]: Without dead ends: 9623 [2023-12-25 23:04:58,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:04:58,900 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 1475 mSDsluCounter, 2494 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 3395 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:04:58,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 3395 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:04:58,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9623 states. [2023-12-25 23:04:58,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9623 to 5299. [2023-12-25 23:04:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5299 states, 5298 states have (on average 1.5201963004907513) internal successors, (8054), 5298 states have internal predecessors, (8054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:58,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5299 states to 5299 states and 8054 transitions. [2023-12-25 23:04:58,959 INFO L78 Accepts]: Start accepts. Automaton has 5299 states and 8054 transitions. Word has length 369 [2023-12-25 23:04:58,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:04:58,959 INFO L495 AbstractCegarLoop]: Abstraction has 5299 states and 8054 transitions. [2023-12-25 23:04:58,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:04:58,960 INFO L276 IsEmpty]: Start isEmpty. Operand 5299 states and 8054 transitions. [2023-12-25 23:04:58,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-25 23:04:58,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:04:58,964 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:04:58,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-25 23:04:58,964 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:04:58,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:04:58,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1477464331, now seen corresponding path program 1 times [2023-12-25 23:04:58,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:04:58,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409044279] [2023-12-25 23:04:58,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:04:58,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:04:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:04:59,723 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:04:59,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:04:59,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409044279] [2023-12-25 23:04:59,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409044279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:04:59,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:04:59,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 23:04:59,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595649791] [2023-12-25 23:04:59,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:04:59,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:04:59,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:04:59,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:04:59,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:04:59,725 INFO L87 Difference]: Start difference. First operand 5299 states and 8054 transitions. Second operand has 8 states, 8 states have (on average 46.125) internal successors, (369), 8 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:00,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:00,032 INFO L93 Difference]: Finished difference Result 24149 states and 37788 transitions. [2023-12-25 23:05:00,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 23:05:00,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 46.125) internal successors, (369), 8 states have internal predecessors, (369), 0 states have call successors, (0), 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 369 [2023-12-25 23:05:00,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:00,054 INFO L225 Difference]: With dead ends: 24149 [2023-12-25 23:05:00,054 INFO L226 Difference]: Without dead ends: 20193 [2023-12-25 23:05:00,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-12-25 23:05:00,063 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 4401 mSDsluCounter, 6584 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4401 SdHoareTripleChecker+Valid, 8267 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:00,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4401 Valid, 8267 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:05:00,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20193 states. [2023-12-25 23:05:00,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20193 to 5471. [2023-12-25 23:05:00,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5471 states, 5470 states have (on average 1.5089579524680072) internal successors, (8254), 5470 states have internal predecessors, (8254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:00,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5471 states to 5471 states and 8254 transitions. [2023-12-25 23:05:00,165 INFO L78 Accepts]: Start accepts. Automaton has 5471 states and 8254 transitions. Word has length 369 [2023-12-25 23:05:00,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:00,165 INFO L495 AbstractCegarLoop]: Abstraction has 5471 states and 8254 transitions. [2023-12-25 23:05:00,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 46.125) internal successors, (369), 8 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:00,165 INFO L276 IsEmpty]: Start isEmpty. Operand 5471 states and 8254 transitions. [2023-12-25 23:05:00,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-25 23:05:00,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:00,170 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:00,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-12-25 23:05:00,170 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:00,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:00,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1435361779, now seen corresponding path program 1 times [2023-12-25 23:05:00,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:00,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838507443] [2023-12-25 23:05:00,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:00,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:02,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:02,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838507443] [2023-12-25 23:05:02,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838507443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:02,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:02,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-25 23:05:02,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997481446] [2023-12-25 23:05:02,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:02,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 23:05:02,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:02,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 23:05:02,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:05:02,250 INFO L87 Difference]: Start difference. First operand 5471 states and 8254 transitions. Second operand has 14 states, 14 states have (on average 26.357142857142858) internal successors, (369), 14 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:04,505 INFO L93 Difference]: Finished difference Result 49550 states and 78002 transitions. [2023-12-25 23:05:04,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-25 23:05:04,506 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 26.357142857142858) internal successors, (369), 14 states have internal predecessors, (369), 0 states have call successors, (0), 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 369 [2023-12-25 23:05:04,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:04,549 INFO L225 Difference]: With dead ends: 49550 [2023-12-25 23:05:04,549 INFO L226 Difference]: Without dead ends: 46916 [2023-12-25 23:05:04,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1306 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1030, Invalid=3940, Unknown=0, NotChecked=0, Total=4970 [2023-12-25 23:05:04,563 INFO L413 NwaCegarLoop]: 1916 mSDtfsCounter, 10229 mSDsluCounter, 21558 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10229 SdHoareTripleChecker+Valid, 23474 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:04,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10229 Valid, 23474 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 23:05:04,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46916 states. [2023-12-25 23:05:04,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46916 to 7514. [2023-12-25 23:05:04,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7514 states, 7513 states have (on average 1.5091175296153334) internal successors, (11338), 7513 states have internal predecessors, (11338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:04,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7514 states to 7514 states and 11338 transitions. [2023-12-25 23:05:04,790 INFO L78 Accepts]: Start accepts. Automaton has 7514 states and 11338 transitions. Word has length 369 [2023-12-25 23:05:04,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:04,790 INFO L495 AbstractCegarLoop]: Abstraction has 7514 states and 11338 transitions. [2023-12-25 23:05:04,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 26.357142857142858) internal successors, (369), 14 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:04,790 INFO L276 IsEmpty]: Start isEmpty. Operand 7514 states and 11338 transitions. [2023-12-25 23:05:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-25 23:05:04,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:04,796 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:04,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-25 23:05:04,797 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:04,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:04,797 INFO L85 PathProgramCache]: Analyzing trace with hash 728817757, now seen corresponding path program 1 times [2023-12-25 23:05:04,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:04,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526681378] [2023-12-25 23:05:04,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:04,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:06,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:06,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526681378] [2023-12-25 23:05:06,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526681378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:06,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:06,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:05:06,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214211943] [2023-12-25 23:05:06,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:06,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:05:06,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:06,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:05:06,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:05:06,555 INFO L87 Difference]: Start difference. First operand 7514 states and 11338 transitions. Second operand has 7 states, 7 states have (on average 52.714285714285715) internal successors, (369), 7 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:06,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:06,792 INFO L93 Difference]: Finished difference Result 17853 states and 27820 transitions. [2023-12-25 23:05:06,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 23:05:06,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 52.714285714285715) internal successors, (369), 7 states have internal predecessors, (369), 0 states have call successors, (0), 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 369 [2023-12-25 23:05:06,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:06,805 INFO L225 Difference]: With dead ends: 17853 [2023-12-25 23:05:06,806 INFO L226 Difference]: Without dead ends: 14436 [2023-12-25 23:05:06,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:05:06,810 INFO L413 NwaCegarLoop]: 1192 mSDtfsCounter, 3787 mSDsluCounter, 4985 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3787 SdHoareTripleChecker+Valid, 6177 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:06,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3787 Valid, 6177 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:05:06,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14436 states. [2023-12-25 23:05:06,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14436 to 7814. [2023-12-25 23:05:06,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7814 states, 7813 states have (on average 1.5097913733521056) internal successors, (11796), 7813 states have internal predecessors, (11796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:06,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 11796 transitions. [2023-12-25 23:05:06,898 INFO L78 Accepts]: Start accepts. Automaton has 7814 states and 11796 transitions. Word has length 369 [2023-12-25 23:05:06,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:06,899 INFO L495 AbstractCegarLoop]: Abstraction has 7814 states and 11796 transitions. [2023-12-25 23:05:06,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.714285714285715) internal successors, (369), 7 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:06,899 INFO L276 IsEmpty]: Start isEmpty. Operand 7814 states and 11796 transitions. [2023-12-25 23:05:06,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-25 23:05:06,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:06,905 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:06,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-25 23:05:06,906 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:06,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:06,906 INFO L85 PathProgramCache]: Analyzing trace with hash -57887399, now seen corresponding path program 1 times [2023-12-25 23:05:06,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:06,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755337358] [2023-12-25 23:05:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:06,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:10,044 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:10,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:10,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755337358] [2023-12-25 23:05:10,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755337358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:10,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:10,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-25 23:05:10,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432418602] [2023-12-25 23:05:10,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:10,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 23:05:10,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:10,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 23:05:10,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-12-25 23:05:10,046 INFO L87 Difference]: Start difference. First operand 7814 states and 11796 transitions. Second operand has 16 states, 16 states have (on average 23.0625) internal successors, (369), 15 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:11,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:11,011 INFO L93 Difference]: Finished difference Result 18510 states and 28648 transitions. [2023-12-25 23:05:11,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 23:05:11,012 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 23.0625) internal successors, (369), 15 states have internal predecessors, (369), 0 states have call successors, (0), 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 369 [2023-12-25 23:05:11,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:11,025 INFO L225 Difference]: With dead ends: 18510 [2023-12-25 23:05:11,026 INFO L226 Difference]: Without dead ends: 14572 [2023-12-25 23:05:11,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=301, Invalid=889, Unknown=0, NotChecked=0, Total=1190 [2023-12-25 23:05:11,032 INFO L413 NwaCegarLoop]: 1769 mSDtfsCounter, 12536 mSDsluCounter, 14028 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12536 SdHoareTripleChecker+Valid, 15797 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:11,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12536 Valid, 15797 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 23:05:11,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14572 states. [2023-12-25 23:05:11,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14572 to 7814. [2023-12-25 23:05:11,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7814 states, 7813 states have (on average 1.509535389735057) internal successors, (11794), 7813 states have internal predecessors, (11794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:11,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 11794 transitions. [2023-12-25 23:05:11,121 INFO L78 Accepts]: Start accepts. Automaton has 7814 states and 11794 transitions. Word has length 369 [2023-12-25 23:05:11,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:11,122 INFO L495 AbstractCegarLoop]: Abstraction has 7814 states and 11794 transitions. [2023-12-25 23:05:11,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 23.0625) internal successors, (369), 15 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 7814 states and 11794 transitions. [2023-12-25 23:05:11,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-25 23:05:11,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:11,128 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:11,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-12-25 23:05:11,128 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:11,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:11,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1889187703, now seen corresponding path program 1 times [2023-12-25 23:05:11,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:11,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037334441] [2023-12-25 23:05:11,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:11,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:12,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:12,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037334441] [2023-12-25 23:05:12,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037334441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:12,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:12,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 23:05:12,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621076975] [2023-12-25 23:05:12,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:12,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:05:12,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:12,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:05:12,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:05:12,716 INFO L87 Difference]: Start difference. First operand 7814 states and 11794 transitions. Second operand has 8 states, 8 states have (on average 46.125) internal successors, (369), 8 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:13,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:13,009 INFO L93 Difference]: Finished difference Result 16894 states and 26212 transitions. [2023-12-25 23:05:13,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 23:05:13,010 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 46.125) internal successors, (369), 8 states have internal predecessors, (369), 0 states have call successors, (0), 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 369 [2023-12-25 23:05:13,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:13,022 INFO L225 Difference]: With dead ends: 16894 [2023-12-25 23:05:13,022 INFO L226 Difference]: Without dead ends: 13177 [2023-12-25 23:05:13,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-12-25 23:05:13,028 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 5032 mSDsluCounter, 6475 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5032 SdHoareTripleChecker+Valid, 7990 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:13,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5032 Valid, 7990 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:05:13,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13177 states. [2023-12-25 23:05:13,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13177 to 7335. [2023-12-25 23:05:13,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7335 states, 7334 states have (on average 1.5091355331333516) internal successors, (11068), 7334 states have internal predecessors, (11068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:13,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7335 states to 7335 states and 11068 transitions. [2023-12-25 23:05:13,107 INFO L78 Accepts]: Start accepts. Automaton has 7335 states and 11068 transitions. Word has length 369 [2023-12-25 23:05:13,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:13,107 INFO L495 AbstractCegarLoop]: Abstraction has 7335 states and 11068 transitions. [2023-12-25 23:05:13,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 46.125) internal successors, (369), 8 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:13,107 INFO L276 IsEmpty]: Start isEmpty. Operand 7335 states and 11068 transitions. [2023-12-25 23:05:13,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-25 23:05:13,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:13,112 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:13,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-12-25 23:05:13,112 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:13,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:13,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1067675509, now seen corresponding path program 1 times [2023-12-25 23:05:13,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:13,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965425095] [2023-12-25 23:05:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:13,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:15,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:15,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965425095] [2023-12-25 23:05:15,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965425095] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:05:15,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416643402] [2023-12-25 23:05:15,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:15,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:05:15,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:05:15,571 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) [2023-12-25 23:05:15,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-25 23:05:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:16,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 2130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 23:05:16,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:05:16,381 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:16,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 23:05:16,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416643402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:16,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 23:05:16,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 21 [2023-12-25 23:05:16,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670418106] [2023-12-25 23:05:16,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:16,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:05:16,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:16,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:05:16,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2023-12-25 23:05:16,383 INFO L87 Difference]: Start difference. First operand 7335 states and 11068 transitions. Second operand has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:16,509 INFO L93 Difference]: Finished difference Result 16114 states and 25033 transitions. [2023-12-25 23:05:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 23:05:16,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 0 states have call successors, (0), 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 369 [2023-12-25 23:05:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:16,519 INFO L225 Difference]: With dead ends: 16114 [2023-12-25 23:05:16,519 INFO L226 Difference]: Without dead ends: 12157 [2023-12-25 23:05:16,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2023-12-25 23:05:16,525 INFO L413 NwaCegarLoop]: 1325 mSDtfsCounter, 3233 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3233 SdHoareTripleChecker+Valid, 3633 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:16,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3233 Valid, 3633 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:05:16,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12157 states. [2023-12-25 23:05:16,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12157 to 7815. [2023-12-25 23:05:16,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7815 states, 7814 states have (on average 1.515868953160993) internal successors, (11845), 7814 states have internal predecessors, (11845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:16,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7815 states to 7815 states and 11845 transitions. [2023-12-25 23:05:16,606 INFO L78 Accepts]: Start accepts. Automaton has 7815 states and 11845 transitions. Word has length 369 [2023-12-25 23:05:16,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:16,606 INFO L495 AbstractCegarLoop]: Abstraction has 7815 states and 11845 transitions. [2023-12-25 23:05:16,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:16,606 INFO L276 IsEmpty]: Start isEmpty. Operand 7815 states and 11845 transitions. [2023-12-25 23:05:16,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-25 23:05:16,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:16,611 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:16,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-25 23:05:16,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:05:16,820 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:16,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:16,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1534782993, now seen corresponding path program 1 times [2023-12-25 23:05:16,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:16,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035738437] [2023-12-25 23:05:16,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:16,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:18,016 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:18,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:18,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035738437] [2023-12-25 23:05:18,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035738437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:18,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:18,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:05:18,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680573229] [2023-12-25 23:05:18,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:18,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:05:18,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:18,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:05:18,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:05:18,018 INFO L87 Difference]: Start difference. First operand 7815 states and 11845 transitions. Second operand has 7 states, 7 states have (on average 52.714285714285715) internal successors, (369), 6 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:18,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:18,413 INFO L93 Difference]: Finished difference Result 15700 states and 24340 transitions. [2023-12-25 23:05:18,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 23:05:18,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 52.714285714285715) internal successors, (369), 6 states have internal predecessors, (369), 0 states have call successors, (0), 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 369 [2023-12-25 23:05:18,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:18,422 INFO L225 Difference]: With dead ends: 15700 [2023-12-25 23:05:18,422 INFO L226 Difference]: Without dead ends: 11082 [2023-12-25 23:05:18,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-25 23:05:18,426 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 3072 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3072 SdHoareTripleChecker+Valid, 4118 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:18,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3072 Valid, 4118 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 23:05:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11082 states. [2023-12-25 23:05:18,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11082 to 7825. [2023-12-25 23:05:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7825 states, 7824 states have (on average 1.5136758691206544) internal successors, (11843), 7824 states have internal predecessors, (11843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:18,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7825 states to 7825 states and 11843 transitions. [2023-12-25 23:05:18,494 INFO L78 Accepts]: Start accepts. Automaton has 7825 states and 11843 transitions. Word has length 369 [2023-12-25 23:05:18,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:18,494 INFO L495 AbstractCegarLoop]: Abstraction has 7825 states and 11843 transitions. [2023-12-25 23:05:18,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.714285714285715) internal successors, (369), 6 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:18,495 INFO L276 IsEmpty]: Start isEmpty. Operand 7825 states and 11843 transitions. [2023-12-25 23:05:18,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-25 23:05:18,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:18,499 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:18,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-25 23:05:18,499 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:18,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:18,500 INFO L85 PathProgramCache]: Analyzing trace with hash -758535439, now seen corresponding path program 1 times [2023-12-25 23:05:18,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:18,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52767967] [2023-12-25 23:05:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:18,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:21,410 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:21,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:21,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52767967] [2023-12-25 23:05:21,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52767967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:21,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:21,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-25 23:05:21,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042445579] [2023-12-25 23:05:21,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:21,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-25 23:05:21,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:21,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-25 23:05:21,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2023-12-25 23:05:21,412 INFO L87 Difference]: Start difference. First operand 7825 states and 11843 transitions. Second operand has 22 states, 22 states have (on average 16.772727272727273) internal successors, (369), 21 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:23,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:23,296 INFO L93 Difference]: Finished difference Result 25715 states and 39943 transitions. [2023-12-25 23:05:23,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-25 23:05:23,297 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 16.772727272727273) internal successors, (369), 21 states have internal predecessors, (369), 0 states have call successors, (0), 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 369 [2023-12-25 23:05:23,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:23,317 INFO L225 Difference]: With dead ends: 25715 [2023-12-25 23:05:23,317 INFO L226 Difference]: Without dead ends: 21498 [2023-12-25 23:05:23,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=680, Invalid=2290, Unknown=0, NotChecked=0, Total=2970 [2023-12-25 23:05:23,326 INFO L413 NwaCegarLoop]: 1985 mSDtfsCounter, 20989 mSDsluCounter, 20484 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20989 SdHoareTripleChecker+Valid, 22469 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:23,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20989 Valid, 22469 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 23:05:23,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21498 states. [2023-12-25 23:05:23,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21498 to 8262. [2023-12-25 23:05:23,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8262 states, 8261 states have (on average 1.511802445224549) internal successors, (12489), 8261 states have internal predecessors, (12489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:23,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8262 states to 8262 states and 12489 transitions. [2023-12-25 23:05:23,441 INFO L78 Accepts]: Start accepts. Automaton has 8262 states and 12489 transitions. Word has length 369 [2023-12-25 23:05:23,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:23,441 INFO L495 AbstractCegarLoop]: Abstraction has 8262 states and 12489 transitions. [2023-12-25 23:05:23,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 16.772727272727273) internal successors, (369), 21 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:23,442 INFO L276 IsEmpty]: Start isEmpty. Operand 8262 states and 12489 transitions. [2023-12-25 23:05:23,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-25 23:05:23,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:23,448 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:23,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-12-25 23:05:23,448 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:23,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:23,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1458601809, now seen corresponding path program 1 times [2023-12-25 23:05:23,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:23,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405622725] [2023-12-25 23:05:23,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:23,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:25,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:25,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405622725] [2023-12-25 23:05:25,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405622725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:25,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:25,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-25 23:05:25,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849081047] [2023-12-25 23:05:25,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:25,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 23:05:25,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:25,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 23:05:25,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-12-25 23:05:25,758 INFO L87 Difference]: Start difference. First operand 8262 states and 12489 transitions. Second operand has 17 states, 17 states have (on average 21.705882352941178) internal successors, (369), 17 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:30,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:30,467 INFO L93 Difference]: Finished difference Result 90228 states and 141037 transitions. [2023-12-25 23:05:30,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-25 23:05:30,468 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 21.705882352941178) internal successors, (369), 17 states have internal predecessors, (369), 0 states have call successors, (0), 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 369 [2023-12-25 23:05:30,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:30,540 INFO L225 Difference]: With dead ends: 90228 [2023-12-25 23:05:30,540 INFO L226 Difference]: Without dead ends: 86069 [2023-12-25 23:05:30,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3837 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1657, Invalid=9685, Unknown=0, NotChecked=0, Total=11342 [2023-12-25 23:05:30,561 INFO L413 NwaCegarLoop]: 1797 mSDtfsCounter, 8297 mSDsluCounter, 32182 mSDsCounter, 0 mSdLazyCounter, 3697 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8297 SdHoareTripleChecker+Valid, 33979 SdHoareTripleChecker+Invalid, 3728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:30,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8297 Valid, 33979 Invalid, 3728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 3697 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-25 23:05:30,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86069 states. [2023-12-25 23:05:31,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86069 to 16634. [2023-12-25 23:05:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16634 states, 16633 states have (on average 1.5146395719353094) internal successors, (25193), 16633 states have internal predecessors, (25193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:31,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16634 states to 16634 states and 25193 transitions. [2023-12-25 23:05:31,036 INFO L78 Accepts]: Start accepts. Automaton has 16634 states and 25193 transitions. Word has length 369 [2023-12-25 23:05:31,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:31,037 INFO L495 AbstractCegarLoop]: Abstraction has 16634 states and 25193 transitions. [2023-12-25 23:05:31,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.705882352941178) internal successors, (369), 17 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:31,037 INFO L276 IsEmpty]: Start isEmpty. Operand 16634 states and 25193 transitions. [2023-12-25 23:05:31,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-25 23:05:31,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:31,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:31,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-12-25 23:05:31,046 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:31,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:31,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1096504027, now seen corresponding path program 1 times [2023-12-25 23:05:31,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:31,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049899735] [2023-12-25 23:05:31,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:31,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:32,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:32,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049899735] [2023-12-25 23:05:32,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049899735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:32,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:32,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 23:05:32,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118936724] [2023-12-25 23:05:32,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:32,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:05:32,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:32,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:05:32,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:05:32,946 INFO L87 Difference]: Start difference. First operand 16634 states and 25193 transitions. Second operand has 8 states, 8 states have (on average 46.125) internal successors, (369), 8 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:33,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:33,192 INFO L93 Difference]: Finished difference Result 35018 states and 54475 transitions. [2023-12-25 23:05:33,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 23:05:33,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 46.125) internal successors, (369), 8 states have internal predecessors, (369), 0 states have call successors, (0), 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 369 [2023-12-25 23:05:33,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:33,219 INFO L225 Difference]: With dead ends: 35018 [2023-12-25 23:05:33,219 INFO L226 Difference]: Without dead ends: 26991 [2023-12-25 23:05:33,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-25 23:05:33,230 INFO L413 NwaCegarLoop]: 1860 mSDtfsCounter, 3092 mSDsluCounter, 5825 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3092 SdHoareTripleChecker+Valid, 7685 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:33,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3092 Valid, 7685 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:05:33,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26991 states. [2023-12-25 23:05:33,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26991 to 17680. [2023-12-25 23:05:33,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17680 states, 17679 states have (on average 1.516431924882629) internal successors, (26809), 17679 states have internal predecessors, (26809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:33,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17680 states to 17680 states and 26809 transitions. [2023-12-25 23:05:33,415 INFO L78 Accepts]: Start accepts. Automaton has 17680 states and 26809 transitions. Word has length 369 [2023-12-25 23:05:33,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:33,415 INFO L495 AbstractCegarLoop]: Abstraction has 17680 states and 26809 transitions. [2023-12-25 23:05:33,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 46.125) internal successors, (369), 8 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 17680 states and 26809 transitions. [2023-12-25 23:05:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-25 23:05:33,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:33,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:33,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-12-25 23:05:33,426 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:33,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:33,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1557730499, now seen corresponding path program 1 times [2023-12-25 23:05:33,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:33,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566458668] [2023-12-25 23:05:33,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:33,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:33,993 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:33,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:33,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566458668] [2023-12-25 23:05:33,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566458668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:33,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:33,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:05:33,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411380841] [2023-12-25 23:05:33,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:33,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:05:33,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:33,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:05:33,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:05:33,994 INFO L87 Difference]: Start difference. First operand 17680 states and 26809 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:34,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:34,104 INFO L93 Difference]: Finished difference Result 34768 states and 54053 transitions. [2023-12-25 23:05:34,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:05:34,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 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 369 [2023-12-25 23:05:34,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:34,131 INFO L225 Difference]: With dead ends: 34768 [2023-12-25 23:05:34,131 INFO L226 Difference]: Without dead ends: 25695 [2023-12-25 23:05:34,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:05:34,144 INFO L413 NwaCegarLoop]: 1146 mSDtfsCounter, 732 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 3815 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:34,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 3815 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:05:34,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25695 states. [2023-12-25 23:05:34,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25695 to 17704. [2023-12-25 23:05:34,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17704 states, 17703 states have (on average 1.515731796870587) internal successors, (26833), 17703 states have internal predecessors, (26833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:34,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17704 states to 17704 states and 26833 transitions. [2023-12-25 23:05:34,363 INFO L78 Accepts]: Start accepts. Automaton has 17704 states and 26833 transitions. Word has length 369 [2023-12-25 23:05:34,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:34,363 INFO L495 AbstractCegarLoop]: Abstraction has 17704 states and 26833 transitions. [2023-12-25 23:05:34,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:34,363 INFO L276 IsEmpty]: Start isEmpty. Operand 17704 states and 26833 transitions. [2023-12-25 23:05:34,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-12-25 23:05:34,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:34,374 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:34,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-25 23:05:34,374 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:34,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:34,375 INFO L85 PathProgramCache]: Analyzing trace with hash 594619348, now seen corresponding path program 1 times [2023-12-25 23:05:34,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:34,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778112451] [2023-12-25 23:05:34,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:34,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:35,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:35,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778112451] [2023-12-25 23:05:35,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778112451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:35,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:35,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 23:05:35,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036320863] [2023-12-25 23:05:35,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:35,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:05:35,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:35,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:05:35,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:05:35,207 INFO L87 Difference]: Start difference. First operand 17704 states and 26833 transitions. Second operand has 8 states, 8 states have (on average 46.25) internal successors, (370), 8 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:35,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:35,572 INFO L93 Difference]: Finished difference Result 63289 states and 99309 transitions. [2023-12-25 23:05:35,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 23:05:35,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 46.25) internal successors, (370), 8 states have internal predecessors, (370), 0 states have call successors, (0), 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 370 [2023-12-25 23:05:35,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:35,623 INFO L225 Difference]: With dead ends: 63289 [2023-12-25 23:05:35,623 INFO L226 Difference]: Without dead ends: 54192 [2023-12-25 23:05:35,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-12-25 23:05:35,642 INFO L413 NwaCegarLoop]: 1363 mSDtfsCounter, 6221 mSDsluCounter, 6223 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6221 SdHoareTripleChecker+Valid, 7586 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:35,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6221 Valid, 7586 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:05:35,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54192 states. [2023-12-25 23:05:35,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54192 to 17760. [2023-12-25 23:05:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17760 states, 17759 states have (on average 1.5150064755898418) internal successors, (26905), 17759 states have internal predecessors, (26905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:36,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17760 states to 17760 states and 26905 transitions. [2023-12-25 23:05:36,019 INFO L78 Accepts]: Start accepts. Automaton has 17760 states and 26905 transitions. Word has length 370 [2023-12-25 23:05:36,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:36,020 INFO L495 AbstractCegarLoop]: Abstraction has 17760 states and 26905 transitions. [2023-12-25 23:05:36,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 46.25) internal successors, (370), 8 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:36,020 INFO L276 IsEmpty]: Start isEmpty. Operand 17760 states and 26905 transitions. [2023-12-25 23:05:36,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-12-25 23:05:36,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:36,030 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:36,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-12-25 23:05:36,031 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:36,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:36,031 INFO L85 PathProgramCache]: Analyzing trace with hash 203512700, now seen corresponding path program 1 times [2023-12-25 23:05:36,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:36,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465300036] [2023-12-25 23:05:36,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:36,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:40,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:40,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465300036] [2023-12-25 23:05:40,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465300036] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:05:40,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640194251] [2023-12-25 23:05:40,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:40,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:05:40,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:05:40,358 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:05:40,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-25 23:05:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:40,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 2133 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-25 23:05:40,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:05:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:41,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 23:05:41,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640194251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:41,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 23:05:41,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [28] total 33 [2023-12-25 23:05:41,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861937164] [2023-12-25 23:05:41,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:41,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:05:41,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:41,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:05:41,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=982, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 23:05:41,316 INFO L87 Difference]: Start difference. First operand 17760 states and 26905 transitions. Second operand has 6 states, 6 states have (on average 61.666666666666664) internal successors, (370), 6 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:41,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:41,656 INFO L93 Difference]: Finished difference Result 38960 states and 60555 transitions. [2023-12-25 23:05:41,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 23:05:41,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 61.666666666666664) internal successors, (370), 6 states have internal predecessors, (370), 0 states have call successors, (0), 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 370 [2023-12-25 23:05:41,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:41,684 INFO L225 Difference]: With dead ends: 38960 [2023-12-25 23:05:41,684 INFO L226 Difference]: Without dead ends: 29807 [2023-12-25 23:05:41,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=105, Invalid=1301, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 23:05:41,698 INFO L413 NwaCegarLoop]: 1272 mSDtfsCounter, 4313 mSDsluCounter, 3206 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4313 SdHoareTripleChecker+Valid, 4478 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:41,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4313 Valid, 4478 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:05:41,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29807 states. [2023-12-25 23:05:41,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29807 to 19148. [2023-12-25 23:05:41,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19148 states, 19147 states have (on average 1.5186191048205986) internal successors, (29077), 19147 states have internal predecessors, (29077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19148 states to 19148 states and 29077 transitions. [2023-12-25 23:05:41,907 INFO L78 Accepts]: Start accepts. Automaton has 19148 states and 29077 transitions. Word has length 370 [2023-12-25 23:05:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:41,907 INFO L495 AbstractCegarLoop]: Abstraction has 19148 states and 29077 transitions. [2023-12-25 23:05:41,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.666666666666664) internal successors, (370), 6 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:41,907 INFO L276 IsEmpty]: Start isEmpty. Operand 19148 states and 29077 transitions. [2023-12-25 23:05:41,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-12-25 23:05:41,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:41,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:41,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-25 23:05:42,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:05:42,130 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:42,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:42,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1022821102, now seen corresponding path program 1 times [2023-12-25 23:05:42,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:42,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264640755] [2023-12-25 23:05:42,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:42,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:43,988 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:43,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:43,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264640755] [2023-12-25 23:05:43,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264640755] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:05:43,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283904147] [2023-12-25 23:05:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:43,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:05:43,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:05:43,990 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:05:43,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-25 23:05:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:44,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 2135 conjuncts, 116 conjunts are in the unsatisfiable core [2023-12-25 23:05:44,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:05:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:46,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:05:49,009 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:49,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283904147] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:05:49,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:05:49,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 33, 33] total 70 [2023-12-25 23:05:49,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370883991] [2023-12-25 23:05:49,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:05:49,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-25 23:05:49,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:49,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-25 23:05:49,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=936, Invalid=3894, Unknown=0, NotChecked=0, Total=4830 [2023-12-25 23:05:49,013 INFO L87 Difference]: Start difference. First operand 19148 states and 29077 transitions. Second operand has 70 states, 70 states have (on average 14.014285714285714) internal successors, (981), 70 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:41,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:12:41,192 INFO L93 Difference]: Finished difference Result 1465656 states and 2292641 transitions. [2023-12-25 23:12:41,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1464 states. [2023-12-25 23:12:41,193 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 14.014285714285714) internal successors, (981), 70 states have internal predecessors, (981), 0 states have call successors, (0), 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 370 [2023-12-25 23:12:41,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:12:42,762 INFO L225 Difference]: With dead ends: 1465656 [2023-12-25 23:12:42,762 INFO L226 Difference]: Without dead ends: 1307915 [2023-12-25 23:12:43,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2473 GetRequests, 948 SyntacticMatches, 2 SemanticMatches, 1523 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111398 ImplicationChecksByTransitivity, 196.8s TimeCoverageRelationStatistics Valid=329771, Invalid=1994329, Unknown=0, NotChecked=0, Total=2324100 [2023-12-25 23:12:43,469 INFO L413 NwaCegarLoop]: 3551 mSDtfsCounter, 152559 mSDsluCounter, 393501 mSDsCounter, 0 mSdLazyCounter, 60232 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152559 SdHoareTripleChecker+Valid, 397052 SdHoareTripleChecker+Invalid, 60498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.2s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 60232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.4s IncrementalHoareTripleChecker+Time [2023-12-25 23:12:43,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152559 Valid, 397052 Invalid, 60498 Unknown, 0 Unchecked, 1.2s Time], IncrementalHoareTripleChecker [266 Valid, 60232 Invalid, 0 Unknown, 0 Unchecked, 41.4s Time] [2023-12-25 23:12:44,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307915 states. [2023-12-25 23:12:49,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307915 to 31737. [2023-12-25 23:12:49,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31737 states, 31736 states have (on average 1.5240420973027478) internal successors, (48367), 31736 states have internal predecessors, (48367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31737 states to 31737 states and 48367 transitions. [2023-12-25 23:12:50,009 INFO L78 Accepts]: Start accepts. Automaton has 31737 states and 48367 transitions. Word has length 370 [2023-12-25 23:12:50,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:12:50,009 INFO L495 AbstractCegarLoop]: Abstraction has 31737 states and 48367 transitions. [2023-12-25 23:12:50,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 14.014285714285714) internal successors, (981), 70 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:50,009 INFO L276 IsEmpty]: Start isEmpty. Operand 31737 states and 48367 transitions. [2023-12-25 23:12:50,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-12-25 23:12:50,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:12:50,028 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:12:50,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-25 23:12:50,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-12-25 23:12:50,233 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:12:50,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:12:50,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1903112306, now seen corresponding path program 1 times [2023-12-25 23:12:50,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:12:50,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518419704] [2023-12-25 23:12:50,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:12:50,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:12:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:12:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:12:52,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:12:52,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518419704] [2023-12-25 23:12:52,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518419704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:12:52,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:12:52,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:12:52,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576588218] [2023-12-25 23:12:52,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:12:52,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:12:52,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:12:52,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:12:52,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:12:52,151 INFO L87 Difference]: Start difference. First operand 31737 states and 48367 transitions. Second operand has 8 states, 8 states have (on average 46.25) internal successors, (370), 7 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:52,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:12:52,515 INFO L93 Difference]: Finished difference Result 92837 states and 143623 transitions. [2023-12-25 23:12:52,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 23:12:52,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 46.25) internal successors, (370), 7 states have internal predecessors, (370), 0 states have call successors, (0), 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 370 [2023-12-25 23:12:52,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:12:52,581 INFO L225 Difference]: With dead ends: 92837 [2023-12-25 23:12:52,581 INFO L226 Difference]: Without dead ends: 69639 [2023-12-25 23:12:52,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:12:52,605 INFO L413 NwaCegarLoop]: 1615 mSDtfsCounter, 3721 mSDsluCounter, 5869 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3721 SdHoareTripleChecker+Valid, 7484 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:12:52,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3721 Valid, 7484 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:12:52,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69639 states. [2023-12-25 23:12:53,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69639 to 31827. [2023-12-25 23:12:53,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31827 states, 31826 states have (on average 1.5224344875259221) internal successors, (48453), 31826 states have internal predecessors, (48453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:53,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31827 states to 31827 states and 48453 transitions. [2023-12-25 23:12:53,064 INFO L78 Accepts]: Start accepts. Automaton has 31827 states and 48453 transitions. Word has length 370 [2023-12-25 23:12:53,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:12:53,065 INFO L495 AbstractCegarLoop]: Abstraction has 31827 states and 48453 transitions. [2023-12-25 23:12:53,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 46.25) internal successors, (370), 7 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:53,065 INFO L276 IsEmpty]: Start isEmpty. Operand 31827 states and 48453 transitions. [2023-12-25 23:12:53,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2023-12-25 23:12:53,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:12:53,086 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:12:53,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-12-25 23:12:53,087 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:12:53,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:12:53,087 INFO L85 PathProgramCache]: Analyzing trace with hash 355486450, now seen corresponding path program 1 times [2023-12-25 23:12:53,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:12:53,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715148491] [2023-12-25 23:12:53,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:12:53,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:12:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:12:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:12:55,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:12:55,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715148491] [2023-12-25 23:12:55,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715148491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:12:55,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:12:55,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 23:12:55,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372505700] [2023-12-25 23:12:55,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:12:55,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 23:12:55,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:12:55,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 23:12:55,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 23:12:55,379 INFO L87 Difference]: Start difference. First operand 31827 states and 48453 transitions. Second operand has 10 states, 10 states have (on average 37.1) internal successors, (371), 10 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:56,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:12:56,112 INFO L93 Difference]: Finished difference Result 72384 states and 111943 transitions. [2023-12-25 23:12:56,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 23:12:56,113 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 37.1) internal successors, (371), 10 states have internal predecessors, (371), 0 states have call successors, (0), 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 371 [2023-12-25 23:12:56,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:12:56,149 INFO L225 Difference]: With dead ends: 72384 [2023-12-25 23:12:56,149 INFO L226 Difference]: Without dead ends: 41133 [2023-12-25 23:12:56,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2023-12-25 23:12:56,174 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 4340 mSDsluCounter, 10130 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4340 SdHoareTripleChecker+Valid, 11633 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 23:12:56,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4340 Valid, 11633 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 23:12:56,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41133 states. [2023-12-25 23:12:56,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41133 to 31922. [2023-12-25 23:12:56,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31922 states, 31921 states have (on average 1.5222894019610915) internal successors, (48593), 31921 states have internal predecessors, (48593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31922 states to 31922 states and 48593 transitions. [2023-12-25 23:12:56,533 INFO L78 Accepts]: Start accepts. Automaton has 31922 states and 48593 transitions. Word has length 371 [2023-12-25 23:12:56,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:12:56,534 INFO L495 AbstractCegarLoop]: Abstraction has 31922 states and 48593 transitions. [2023-12-25 23:12:56,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.1) internal successors, (371), 10 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:56,535 INFO L276 IsEmpty]: Start isEmpty. Operand 31922 states and 48593 transitions. [2023-12-25 23:12:56,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2023-12-25 23:12:56,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:12:56,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:12:56,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-12-25 23:12:56,554 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:12:56,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:12:56,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1817440922, now seen corresponding path program 1 times [2023-12-25 23:12:56,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:12:56,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771203978] [2023-12-25 23:12:56,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:12:56,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:12:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:12:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:12:59,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:12:59,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771203978] [2023-12-25 23:12:59,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771203978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:12:59,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:12:59,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-25 23:12:59,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705665586] [2023-12-25 23:12:59,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:12:59,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 23:12:59,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:12:59,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 23:12:59,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:12:59,428 INFO L87 Difference]: Start difference. First operand 31922 states and 48593 transitions. Second operand has 14 states, 14 states have (on average 26.5) internal successors, (371), 13 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:00,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:00,060 INFO L93 Difference]: Finished difference Result 78785 states and 121943 transitions. [2023-12-25 23:13:00,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 23:13:00,060 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 26.5) internal successors, (371), 13 states have internal predecessors, (371), 0 states have call successors, (0), 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 371 [2023-12-25 23:13:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:00,115 INFO L225 Difference]: With dead ends: 78785 [2023-12-25 23:13:00,116 INFO L226 Difference]: Without dead ends: 58570 [2023-12-25 23:13:00,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2023-12-25 23:13:00,140 INFO L413 NwaCegarLoop]: 2516 mSDtfsCounter, 7771 mSDsluCounter, 10051 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7771 SdHoareTripleChecker+Valid, 12567 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:00,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7771 Valid, 12567 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:13:00,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58570 states. [2023-12-25 23:13:00,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58570 to 30950. [2023-12-25 23:13:00,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30950 states, 30949 states have (on average 1.5250250411968076) internal successors, (47198), 30949 states have internal predecessors, (47198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:00,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30950 states to 30950 states and 47198 transitions. [2023-12-25 23:13:00,563 INFO L78 Accepts]: Start accepts. Automaton has 30950 states and 47198 transitions. Word has length 371 [2023-12-25 23:13:00,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:00,563 INFO L495 AbstractCegarLoop]: Abstraction has 30950 states and 47198 transitions. [2023-12-25 23:13:00,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 26.5) internal successors, (371), 13 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:00,563 INFO L276 IsEmpty]: Start isEmpty. Operand 30950 states and 47198 transitions. [2023-12-25 23:13:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2023-12-25 23:13:00,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:00,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:13:00,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-12-25 23:13:00,581 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:00,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:00,582 INFO L85 PathProgramCache]: Analyzing trace with hash 81428666, now seen corresponding path program 1 times [2023-12-25 23:13:00,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:00,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180757058] [2023-12-25 23:13:00,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:00,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:02,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:02,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180757058] [2023-12-25 23:13:02,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180757058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:13:02,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:13:02,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 23:13:02,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269483342] [2023-12-25 23:13:02,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:13:02,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 23:13:02,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:02,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 23:13:02,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 23:13:02,861 INFO L87 Difference]: Start difference. First operand 30950 states and 47198 transitions. Second operand has 10 states, 10 states have (on average 37.1) internal successors, (371), 9 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:03,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:03,189 INFO L93 Difference]: Finished difference Result 85717 states and 133131 transitions. [2023-12-25 23:13:03,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 23:13:03,190 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 37.1) internal successors, (371), 9 states have internal predecessors, (371), 0 states have call successors, (0), 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 371 [2023-12-25 23:13:03,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:03,244 INFO L225 Difference]: With dead ends: 85717 [2023-12-25 23:13:03,244 INFO L226 Difference]: Without dead ends: 59514 [2023-12-25 23:13:03,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-12-25 23:13:03,270 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 4333 mSDsluCounter, 7981 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4333 SdHoareTripleChecker+Valid, 8901 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:03,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4333 Valid, 8901 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:13:03,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59514 states. [2023-12-25 23:13:03,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59514 to 30950. [2023-12-25 23:13:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30950 states, 30949 states have (on average 1.5216646741413293) internal successors, (47094), 30949 states have internal predecessors, (47094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:03,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30950 states to 30950 states and 47094 transitions. [2023-12-25 23:13:03,644 INFO L78 Accepts]: Start accepts. Automaton has 30950 states and 47094 transitions. Word has length 371 [2023-12-25 23:13:03,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:03,645 INFO L495 AbstractCegarLoop]: Abstraction has 30950 states and 47094 transitions. [2023-12-25 23:13:03,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.1) internal successors, (371), 9 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:03,645 INFO L276 IsEmpty]: Start isEmpty. Operand 30950 states and 47094 transitions. [2023-12-25 23:13:03,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2023-12-25 23:13:03,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:03,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:13:03,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-12-25 23:13:03,662 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:03,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:03,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1914019142, now seen corresponding path program 1 times [2023-12-25 23:13:03,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:03,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130446833] [2023-12-25 23:13:03,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:03,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:05,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:05,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130446833] [2023-12-25 23:13:05,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130446833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:13:05,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:13:05,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-25 23:13:05,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083013059] [2023-12-25 23:13:05,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:13:05,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 23:13:05,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:05,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 23:13:05,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-25 23:13:05,301 INFO L87 Difference]: Start difference. First operand 30950 states and 47094 transitions. Second operand has 12 states, 12 states have (on average 30.916666666666668) internal successors, (371), 12 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:06,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:06,507 INFO L93 Difference]: Finished difference Result 223756 states and 350503 transitions. [2023-12-25 23:13:06,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-25 23:13:06,507 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 30.916666666666668) internal successors, (371), 12 states have internal predecessors, (371), 0 states have call successors, (0), 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 371 [2023-12-25 23:13:06,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:06,711 INFO L225 Difference]: With dead ends: 223756 [2023-12-25 23:13:06,711 INFO L226 Difference]: Without dead ends: 204490 [2023-12-25 23:13:06,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=466, Unknown=0, NotChecked=0, Total=650 [2023-12-25 23:13:06,775 INFO L413 NwaCegarLoop]: 3255 mSDtfsCounter, 7552 mSDsluCounter, 20161 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7552 SdHoareTripleChecker+Valid, 23416 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:06,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7552 Valid, 23416 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:13:06,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204490 states. [2023-12-25 23:13:08,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204490 to 56306. [2023-12-25 23:13:08,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56306 states, 56305 states have (on average 1.5328834028949472) internal successors, (86309), 56305 states have internal predecessors, (86309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:08,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56306 states to 56306 states and 86309 transitions. [2023-12-25 23:13:08,122 INFO L78 Accepts]: Start accepts. Automaton has 56306 states and 86309 transitions. Word has length 371 [2023-12-25 23:13:08,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:08,123 INFO L495 AbstractCegarLoop]: Abstraction has 56306 states and 86309 transitions. [2023-12-25 23:13:08,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.916666666666668) internal successors, (371), 12 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:08,123 INFO L276 IsEmpty]: Start isEmpty. Operand 56306 states and 86309 transitions. [2023-12-25 23:13:08,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2023-12-25 23:13:08,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:08,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:13:08,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-12-25 23:13:08,158 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:08,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:08,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1290208864, now seen corresponding path program 1 times [2023-12-25 23:13:08,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:08,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552316226] [2023-12-25 23:13:08,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:08,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:10,099 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:10,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:10,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552316226] [2023-12-25 23:13:10,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552316226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:13:10,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:13:10,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-25 23:13:10,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378152515] [2023-12-25 23:13:10,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:13:10,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 23:13:10,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:10,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 23:13:10,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 23:13:10,101 INFO L87 Difference]: Start difference. First operand 56306 states and 86309 transitions. Second operand has 11 states, 11 states have (on average 33.72727272727273) internal successors, (371), 11 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:11,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:11,279 INFO L93 Difference]: Finished difference Result 307469 states and 483208 transitions. [2023-12-25 23:13:11,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-25 23:13:11,279 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 33.72727272727273) internal successors, (371), 11 states have internal predecessors, (371), 0 states have call successors, (0), 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 371 [2023-12-25 23:13:11,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:11,675 INFO L225 Difference]: With dead ends: 307469 [2023-12-25 23:13:11,675 INFO L226 Difference]: Without dead ends: 270876 [2023-12-25 23:13:11,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2023-12-25 23:13:11,706 INFO L413 NwaCegarLoop]: 1961 mSDtfsCounter, 6822 mSDsluCounter, 15356 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6822 SdHoareTripleChecker+Valid, 17317 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:11,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6822 Valid, 17317 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:13:11,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270876 states. [2023-12-25 23:13:12,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270876 to 56306. [2023-12-25 23:13:12,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56306 states, 56305 states have (on average 1.5320309031169523) internal successors, (86261), 56305 states have internal predecessors, (86261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:12,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56306 states to 56306 states and 86261 transitions. [2023-12-25 23:13:12,977 INFO L78 Accepts]: Start accepts. Automaton has 56306 states and 86261 transitions. Word has length 371 [2023-12-25 23:13:12,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:12,977 INFO L495 AbstractCegarLoop]: Abstraction has 56306 states and 86261 transitions. [2023-12-25 23:13:12,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.72727272727273) internal successors, (371), 11 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:12,977 INFO L276 IsEmpty]: Start isEmpty. Operand 56306 states and 86261 transitions. [2023-12-25 23:13:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-12-25 23:13:13,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:13,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:13:13,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-12-25 23:13:13,124 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:13,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:13,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1181722768, now seen corresponding path program 1 times [2023-12-25 23:13:13,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:13,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683733897] [2023-12-25 23:13:13,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:13,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:14,482 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:14,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:14,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683733897] [2023-12-25 23:13:14,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683733897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:13:14,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:13:14,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 23:13:14,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415884137] [2023-12-25 23:13:14,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:13:14,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 23:13:14,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:14,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 23:13:14,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-25 23:13:14,483 INFO L87 Difference]: Start difference. First operand 56306 states and 86261 transitions. Second operand has 11 states, 11 states have (on average 33.81818181818182) internal successors, (372), 10 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:15,197 INFO L93 Difference]: Finished difference Result 190675 states and 295139 transitions. [2023-12-25 23:13:15,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-25 23:13:15,205 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 33.81818181818182) internal successors, (372), 10 states have internal predecessors, (372), 0 states have call successors, (0), 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 372 [2023-12-25 23:13:15,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:15,351 INFO L225 Difference]: With dead ends: 190675 [2023-12-25 23:13:15,351 INFO L226 Difference]: Without dead ends: 154082 [2023-12-25 23:13:15,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2023-12-25 23:13:15,409 INFO L413 NwaCegarLoop]: 1639 mSDtfsCounter, 7849 mSDsluCounter, 11479 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7849 SdHoareTripleChecker+Valid, 13118 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:15,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7849 Valid, 13118 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:13:15,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154082 states. [2023-12-25 23:13:16,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154082 to 90793. [2023-12-25 23:13:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90793 states, 90792 states have (on average 1.5264340470526037) internal successors, (138588), 90792 states have internal predecessors, (138588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:16,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90793 states to 90793 states and 138588 transitions. [2023-12-25 23:13:16,604 INFO L78 Accepts]: Start accepts. Automaton has 90793 states and 138588 transitions. Word has length 372 [2023-12-25 23:13:16,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:16,604 INFO L495 AbstractCegarLoop]: Abstraction has 90793 states and 138588 transitions. [2023-12-25 23:13:16,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.81818181818182) internal successors, (372), 10 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:16,604 INFO L276 IsEmpty]: Start isEmpty. Operand 90793 states and 138588 transitions. [2023-12-25 23:13:16,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-12-25 23:13:16,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:16,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:13:16,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-12-25 23:13:16,879 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:16,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:16,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1429869262, now seen corresponding path program 1 times [2023-12-25 23:13:16,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:16,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702186619] [2023-12-25 23:13:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:16,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:20,345 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:20,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:20,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702186619] [2023-12-25 23:13:20,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702186619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:13:20,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:13:20,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-25 23:13:20,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866684757] [2023-12-25 23:13:20,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:13:20,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-25 23:13:20,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:20,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-25 23:13:20,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2023-12-25 23:13:20,346 INFO L87 Difference]: Start difference. First operand 90793 states and 138588 transitions. Second operand has 18 states, 18 states have (on average 20.666666666666668) internal successors, (372), 17 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:21,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:21,958 INFO L93 Difference]: Finished difference Result 335896 states and 518438 transitions. [2023-12-25 23:13:21,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 23:13:21,958 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 20.666666666666668) internal successors, (372), 17 states have internal predecessors, (372), 0 states have call successors, (0), 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 372 [2023-12-25 23:13:21,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:22,234 INFO L225 Difference]: With dead ends: 335896 [2023-12-25 23:13:22,235 INFO L226 Difference]: Without dead ends: 279820 [2023-12-25 23:13:22,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=248, Invalid=744, Unknown=0, NotChecked=0, Total=992 [2023-12-25 23:13:22,333 INFO L413 NwaCegarLoop]: 1403 mSDtfsCounter, 19428 mSDsluCounter, 12017 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19428 SdHoareTripleChecker+Valid, 13420 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:22,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19428 Valid, 13420 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 23:13:22,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279820 states. [2023-12-25 23:13:24,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279820 to 94535. [2023-12-25 23:13:24,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94535 states, 94534 states have (on average 1.5216006939302262) internal successors, (143843), 94534 states have internal predecessors, (143843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:24,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94535 states to 94535 states and 143843 transitions. [2023-12-25 23:13:24,552 INFO L78 Accepts]: Start accepts. Automaton has 94535 states and 143843 transitions. Word has length 372 [2023-12-25 23:13:24,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:24,552 INFO L495 AbstractCegarLoop]: Abstraction has 94535 states and 143843 transitions. [2023-12-25 23:13:24,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.666666666666668) internal successors, (372), 17 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:24,552 INFO L276 IsEmpty]: Start isEmpty. Operand 94535 states and 143843 transitions. [2023-12-25 23:13:24,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-12-25 23:13:24,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:24,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:13:24,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-12-25 23:13:24,626 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:24,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:24,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1708908426, now seen corresponding path program 1 times [2023-12-25 23:13:24,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:24,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83764455] [2023-12-25 23:13:24,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:24,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:28,294 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:28,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:28,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83764455] [2023-12-25 23:13:28,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83764455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:13:28,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:13:28,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-25 23:13:28,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353772625] [2023-12-25 23:13:28,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:13:28,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 23:13:28,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:28,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 23:13:28,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2023-12-25 23:13:28,296 INFO L87 Difference]: Start difference. First operand 94535 states and 143843 transitions. Second operand has 23 states, 23 states have (on average 16.17391304347826) internal successors, (372), 22 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:31,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:31,290 INFO L93 Difference]: Finished difference Result 318042 states and 491933 transitions. [2023-12-25 23:13:31,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-25 23:13:31,291 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 16.17391304347826) internal successors, (372), 22 states have internal predecessors, (372), 0 states have call successors, (0), 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 372 [2023-12-25 23:13:31,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:31,607 INFO L225 Difference]: With dead ends: 318042 [2023-12-25 23:13:31,607 INFO L226 Difference]: Without dead ends: 267082 [2023-12-25 23:13:31,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=502, Invalid=1850, Unknown=0, NotChecked=0, Total=2352 [2023-12-25 23:13:31,694 INFO L413 NwaCegarLoop]: 2014 mSDtfsCounter, 16077 mSDsluCounter, 23732 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16077 SdHoareTripleChecker+Valid, 25746 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:31,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16077 Valid, 25746 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 23:13:31,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267082 states. [2023-12-25 23:13:33,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267082 to 97319. [2023-12-25 23:13:33,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97319 states, 97318 states have (on average 1.5216403954047555) internal successors, (148083), 97318 states have internal predecessors, (148083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97319 states to 97319 states and 148083 transitions. [2023-12-25 23:13:33,459 INFO L78 Accepts]: Start accepts. Automaton has 97319 states and 148083 transitions. Word has length 372 [2023-12-25 23:13:33,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:33,459 INFO L495 AbstractCegarLoop]: Abstraction has 97319 states and 148083 transitions. [2023-12-25 23:13:33,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 16.17391304347826) internal successors, (372), 22 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:33,459 INFO L276 IsEmpty]: Start isEmpty. Operand 97319 states and 148083 transitions. [2023-12-25 23:13:33,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-12-25 23:13:33,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:33,547 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:13:33,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-12-25 23:13:33,547 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:33,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:33,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1936129416, now seen corresponding path program 1 times [2023-12-25 23:13:33,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:33,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333419894] [2023-12-25 23:13:33,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:33,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:38,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:38,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333419894] [2023-12-25 23:13:38,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333419894] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:13:38,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643699752] [2023-12-25 23:13:38,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:38,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:13:38,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:13:38,322 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:13:38,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-25 23:13:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:38,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 2144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 23:13:38,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:13:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:39,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 23:13:39,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643699752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:13:39,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 23:13:39,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [25] total 32 [2023-12-25 23:13:39,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483837669] [2023-12-25 23:13:39,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:13:39,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:13:39,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:39,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:13:39,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=925, Unknown=0, NotChecked=0, Total=992 [2023-12-25 23:13:39,145 INFO L87 Difference]: Start difference. First operand 97319 states and 148083 transitions. Second operand has 8 states, 8 states have (on average 46.5) internal successors, (372), 8 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:40,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:40,159 INFO L93 Difference]: Finished difference Result 300175 states and 463978 transitions. [2023-12-25 23:13:40,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 23:13:40,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 46.5) internal successors, (372), 8 states have internal predecessors, (372), 0 states have call successors, (0), 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 372 [2023-12-25 23:13:40,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:40,401 INFO L225 Difference]: With dead ends: 300175 [2023-12-25 23:13:40,401 INFO L226 Difference]: Without dead ends: 241203 [2023-12-25 23:13:40,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=152, Invalid=1570, Unknown=0, NotChecked=0, Total=1722 [2023-12-25 23:13:40,491 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 5493 mSDsluCounter, 5958 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5493 SdHoareTripleChecker+Valid, 7600 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:40,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5493 Valid, 7600 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:13:40,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241203 states. [2023-12-25 23:13:42,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241203 to 102939. [2023-12-25 23:13:42,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102939 states, 102938 states have (on average 1.5196720355942412) internal successors, (156432), 102938 states have internal predecessors, (156432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102939 states to 102939 states and 156432 transitions. [2023-12-25 23:13:42,497 INFO L78 Accepts]: Start accepts. Automaton has 102939 states and 156432 transitions. Word has length 372 [2023-12-25 23:13:42,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:42,497 INFO L495 AbstractCegarLoop]: Abstraction has 102939 states and 156432 transitions. [2023-12-25 23:13:42,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 46.5) internal successors, (372), 8 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:42,497 INFO L276 IsEmpty]: Start isEmpty. Operand 102939 states and 156432 transitions. [2023-12-25 23:13:42,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-12-25 23:13:42,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:42,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:13:42,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-25 23:13:42,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:13:42,790 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:42,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:42,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1387589194, now seen corresponding path program 1 times [2023-12-25 23:13:42,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:42,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675145307] [2023-12-25 23:13:42,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:42,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat